# Patent

## Title
Chemokine receptor binding heterocyclic compounds

## Abstract

Novel compounds that are useful for targeting chemokine receptors are disclosed. These compounds are complex tertiary amines.

## Background
CROSS-REFERENCE TO RELATED APPLICATIONS
This application is a divisional of U.S. application Ser. No. 09/957,682, filed Sep. 17, 2001, now U.S. Pat. No. 6,864,265, which claims priority under 35 U.S.C. 119(e) from U.S. Provisional Application 60/232,891 filed 15 Sep. 2000 and from Application 60/234,510 filed 22 Sep. 2000. The contents of these applications are incorporated herein by reference.


TECHNICAL FIELD
This invention generally relates to novel compounds, pharmaceutical compositions and their use. This invention more specifically relates to novel heterocyclic compounds that bind to chemokine receptors, including CXCR4 and CCR5, and demonstrate protective effects against infection of target cells by a human immunodeficiency virus (HIV).
BACKGROUND OF THE INVENTION
Approximately 40 human chemokines have been described, that function, at least in part, by modulating a complex and overlapping set of biological activities important for the movement of lymphoid cells and extravasation and tissue infiltration of leukocytes in response to inciting agents (See, for example: P. Ponath, Exp. Opin. Invest. Drugs, 7:1–18, 1998; Baggiolini, M., Nature 392, 565–568 (1998); Locati et al. Annu. Rev. Med. 50, 425–40 (1999)). These chemotactic cytokines, or chemokines, constitute a family of proteins, approximately 8–10 kDa in size. Chemokines appear to share a common structural motif, that consists of 4 conserved cysteines involved in maintaining tertiary structure. There are two major subfamilies of chemokines: the “CC” or β-chemokines and the “CXC” or α-chemokines. The receptors of these chemokines are classified based upon the chemokine that constitutes the receptor's natural ligand. Receptors of the β-chemokines are designated “CCR” while those of the α-chemokines are designated “CXCR”.
Chemokines are considered to be principal mediators in the initiation and maintenance of inflammation (see Chemokines in Disease published by Humana Press (1999), Edited by C. Herbert; Murdoch et al. Blood 95, 3032–3043 (2000)). More specifically, chemokines have been found to play an important role in the regulation of endothelial cell function, including proliferation, migration and differentiation during angiogenesis and re-endothelialization after injury (Gupta et al., J. Biol. Chem., 7:4282–4287 (1998); Volin et al Biochem. Biophys Res. Commun. 242, 46–53 (1998)). Two specific chemokines have been implicated in the etiology of infection by human immunodeficiency virus (HIV).
In most instances, HIV initially binds via its gp120 envelope protein to the CD4 receptor of the target cell. A conformational change appears to take place in gp120 which results in its subsequent binding to a chemokine receptor, such as CCR5 (Wyatt et al., Science, 280:1884–1888 (1998); Rizzuto et al. Science, 280:1949–1953 (1998); Berger et al. Annu. Rev. Immunol. 17: 657–700 (1999)). HIV-1 isolates arising subsequently in the infection bind to the CXCR4 chemokine receptor.
Following the initial binding by HIV to CD4, virus-cell fusion results, which is mediated by members of the chemokine receptor family, with different members serving as fusion cofactors for macrophage-tropic (M-tropic) and T cell line-tropic (T-tropic) isolates of HIV-1 (Carroll et al., Science, 276: 273–276 1997; Feng et al. Science 272, 872–877 (1996); Bleul et al. Nature 382, 829–833 (1996); Oberlin et al. Nature 382, 833–835 (1996); Cocchi et al. Science 270, 1811–1815 (1995); Dragic et al. Nature 381, 667–673 (1996); Deng et al. Nature 381, 661–666 (1996); Alkhatib et al. Science 272, 1955–1958, 1996). During the course of infection within a patient, it appears that a majority of HIV particles shift from the M-tropic to the more pathogenic T-tropic viral phenotype (Blaak et al. Proc. Natl. Acad. Sci. 97, 1269–1274 (2000); Miedema et al., Immune. Rev., 140:35 (1994); Simmonds et al. J. Virol. 70, 8355–8360 (1996); Tersmette et al. J. Virol. 62, 2026–2032, 1988); Connor, R. I., Ho, D. D. J. Virol. 68, 4400–4408 (1994); Schuitemaker et al. J. Virol. 66, 1354–1360 (1992)). The M-tropic viral phenotype correlates with the virus's ability to enter the cell following binding of the CCR5 receptor, while the T-tropic viral phenotype correlates with viral entry into the cell following binding and membrane fusion with the CXCR4 receptor. Clinical observations suggest that patients who possess genetic mutations in CCR5 appear resistant, or less susceptible to HIV infection (Liu et al. Cell 86, 367–377 (1996); Samson et al. Nature 382, 722–725 (1996); Michael et al. Nature Med. 3, 338–340 (1997); Michael et al. J. Virol. 72, 6040–6047 (1998); Obrien et al. Lancet 349, 1219 (1997); Zhang et al. AIDS Res. Hum. Retroviruses 13, 1357–1366 (1997); Rana et al. J. Virol. 71, 3219–3227 (1997); Theodorou et al. Lancet 349, 1219–1220 (1997). Despite the number of chemokine receptors which have been reported to HIV mediate entry into cells, CCR5 and CXCR4 appear to be the only physiologically relevant coreceptors used by a wide variety of primary clinical HIV-1 strains (Zhang et al. J. Virol. 72, 9307–9312 (1998); Zhang et al. J. Virol. 73, 3443–3448 (1999); Simmonds et al. J. Virol. 72, 8453–8457 (1988)). Fusion and entry of T-tropic viruses that use CXCR4 are inhibited by the natural CXC-chemokine stromal cell-derived factor-1, whereas fusion and entry of M-tropic viruses that use CCR5 are inhibited by the natural CC-chemokines namely, Regulated on Activation Normal T-cell Expressed and Secreted (RANTES) and Macrophage Inflammatory proteins (MIP-1 alpha and beta).
In addition to serving as a co-factor for HIV entry, the direct interaction of virus-associated gp120 with CXCR4 has been recently suggested as a possible cause of CD8+ T-cell apoptosis and AIDS-related dementia via induction of neuronal cell apoptosis (Hesselgesser et al. Curr. Biol. 8, 595–598 (1998); Hesselgesser et al. Curr. Biol. 7, 112–121 (1997); Hesselgesser et al. “Chemokines and Chemokine receptors in the Brain” in Chemokines in Disease published by Humana Press (1999), Edited by C. Herbert; Herbein et al. Nature 395, 189–194 (1998); Buttini et al. Nature Med. 4, 441–446 (1998); Ohagen et al. J. Virol. 73, 897–906 (1999); Biard-Piechaczyk et al. Virology 268, 329–344 (2000); Sanders et al. J. Neuroscience Res. 59, 671–679 (2000); Bajetto et al. J. Neurochem. 73, 2348–2357 (1999); Zheng et al. J. Virol. 73, 8256–8267 (1999)).
However, the binding of chemokine receptors to their natural ligands appears to serve a more evolutionary and central role than only as mediators of HIV infection. The binding of the natural ligand, pre-B-cell growth-stimulating factor/stromal cell derived factor (PBSF/SDF-1) to the CXCR4 chemokine receptor provides an important signaling mechanism: CXCR4 or SDF-1 knock-out mice exhibit cerebellar, cardiac and gastrointestinal tract abnormalities and die in utero (Zou et al., Nature, 393:591–594 (1998); Tachibana et al., Nature, 393:591–594 (1998); Nagasawa et al. Nature 382, 635–638 (1996)). CXCR4-deficient mice also display hematopoietic defects (Nagasawa et al. Nature 382, 635–638 (1996)); the migration of CXCR4 expressing leukocytes and hematopoietic progenitors to SDF-1 appears to be important for maintaining B-cell lineage and localization of CD34+ progenitor cells in bone marrow (Bleul et al. J. Exp. Med. 187, 753–762 (1998); Viardot et al. Ann. Hematol. 77, 195–197 (1998); Auiti et al. J. Exp. Med. 185, 111–120 (1997); Peled et al. Science 283, 845–848 (1999); Qing et al. Immunity 10, 463–471 (1999); Lataillade et al. Blood 95, 756–768 (1999); Ishii et al. J. Immunol. 163, 3612–3620 (1999); Maekawa et al. Internal Medicine 39, 90–100 (2000); Fedyk et al. J. Leukocyte Biol. 66, 667–673 (1999); Peled et al. Blood 95, 3289–3296 (2000)).
The signal provided by SDF-1 on binding to CXCR4 may also play an important role in tumor cell proliferation and regulation of angiogenesis associated with tumor growth (See “Chemokines and Cancer” published by Humana Press (1999); Edited by B. J. Rollins; Arenburg et al. J. Leukocyte Biol. 62, 554–562 (1997); Moore et al. J. Invest. Med. 46, 113–120 (1998); Moore et al. Trends cardiovasc. Med. 8, 51–58 (1998); Seghal et al. J. Surg. Oncol. 69, 99–104 (1998)); the known angiogenic growth factors VEG-F and bFGF, up-regulate levels of CXCR4 in endothelial cells, and SDF-1 can induce neovascularization in vivo (Salcedo et al. Am. J. Pathol. 154, 1125–1135 (1999)); Leukemia cells that express CXCR4 migrate and adhere to lymph nodes and bone marrow stromal cells that express SDF-1 (Burger et al. Blood 94, 3658–3667 (1999); Arai et al. Eur. J. Haematol. 64, 323–332 (2000); Bradstock et al. Leukemia 14, 882–888 (2000)).
The binding of SDF-1 to CXCR4 has also been implicated in the pathogenesis of atherosclerosis (Abi-Younes et al. Circ. Res. 86, 131–138 (2000)), renal allograft rejection (Eitner et al. Transplantation 66, 1551–1557 (1998)), asthma and allergic airway inflammation (Yssel et al. Clinical and Experimental Allergy 28, 104–109 (1998); J. Immunol. 164, 5935–5943 (2000); Gonzalo et al. J. Immunol. 165, 499–508 (2000)), Alzheimers disease (Xia et al. J. Neurovirology 5, 32–41 (1999)) and Arthritis (Nanki et al. J. Immunol. 164, 5010–5014 (2000)).
In attempting to better understand the relationship between chemokines and their receptors, recent experiments to block the fusion, entry and replication of HIV via the CXCR4 chemokine receptor were carried out through the use of monoclonal antibodies or small molecules that appear to suggest a useful therapeutic strategy (Schols et al., J. Exp. Med. 186:1383–1388 (1997); Schols et al., Antiviral Research 35:147–156 (1997); Bridger et al. J. Med. Chem. 42, 3971–3981 (1999); Bridger et al. “Bicyclam Derivatives as HIV Inhibitors” in Advances in Antiviral Drug Design Volume 3, p161–229; Published by JAI press (1999); Edited by E. De Clercq). Small molecules, such as bicyclams, appear to specifically bind to CXCR4 and not CCR5 (Donzella et al., Nature Medicine, 4:72–77 (1998)). These experiments demonstrated interference with HIV entry and membrane fusion into the target cell in vitro. More recently, bicyclams were also shown to inhibit fusion and replication of Feline Immunodeficiency Virus (FIV) that uses CXCR4 for entry (Egberink et al. J. Virol. 73, 6346–6352 (1999)).
Additional experiments have shown that the bicyclam dose-dependently inhibits binding of 125I-labeled SDF-1 to CXCR4 and the signal transduction (indicated by an increase in intracellular calcium) in response to SDF-1. Thus, the bicyclam also functioned as an antagonist to the signal transduction resulting from the binding of stromal derived factor or SDF-1α, the natural chemokine to CXCR4. Bicyclams also inhibited HIV gp120 (envelope)-induced apoptosis in non-HIV infected cells (Blanco et al. Antimicrobial Agents and Chemother. 44, 51–56 (2000)).
U.S. Pat. Nos. 5,583,131; 5,698,546; 5,817,807; 5,021,409; and 6,001,826 which are herein incorporated in their entirety by reference, disclose cyclic compounds that are active against HIV-1 and HIV-2 in in vitro tests. It was subsequently discovered and further disclosed in copending application U.S. Ser. No. 09/111,895 and U.S. Ser. No. 60/172,153 that these compounds exhibit anti-HIV activity by binding to the chemokine receptor CXCR4 expressed on the surface of certain cells of the immune system. This competitive binding thereby protects these target cells from infection by HIV which utilize the CXCR4 receptor for entry. In addition, these compounds antagonize the binding, signaling and chemotactic effects of the natural ligand for CXCR4, the chemokine stromal cell-derived factor 1α (SDF-1). We further disclosed that these novel compounds demonstrate protective effects against HIV infection of target cells by binding in vitro to the CCR5 receptor.
Additionally we have disclosed in U.S. Ser. No. 09/495,298 that these cyclic polyamine antiviral agents described in the above-mentioned patents have the effect of enhancing production of white blood cells as well as exhibiting antiviral properties. Thus, these agents are useful for controlling the side-effects of chemotherapy, enhancing the success of bone marrow transplantation, enhancing wound healing and burn treatment, as well as combating bacterial infections in leukemia.
More recently, we disclosed in U.S. Ser. No. 09/535,314, a series of heterocyclic compounds that exhibit anti-HIV activity by binding to the chemokine receptors CXCR4 and CCR5 expressed on the surface of certain cells of the immune system. This competitive binding thereby protects these target cells from infection by HIV which utilize the CXCR4 or CCR5 receptors for entry. In addition, these compounds antagonize the binding, signaling and chemotactic effects of the natural ligand for CXCR4, the chemokine stromal cell-derived factor 1α (SDF-1) and/or the natural ligand for CCR5, the chemokine RANTES.
Herein, we disclose novel compounds that exhibit protective effects against HIV infection of target cells by binding to chemokine receptor CXCR4 or CCR5 in a similar manner to the previously disclosed macrocyclic compounds. In addition, these compounds antagonize the binding, signaling and chemotactic effects of the natural ligand for CXCR4, the chemokine stromal cell-derived factor 1α (SDF-1) and/or the natural ligand for CCR5, the chemokine RANTES.
Citation of the above documents is not intended as an admission that any of the foregoing is pertinent prior art. All statements as to the date or representation as to the contents of these documents is based on the information available to the applicants and does not constitute any admission as to the correctness of the dates or contents of these documents. Further, all documents referred to throughout this application are hereby incorporated in their entirety by reference herein.
SUMMARY OF THE INVENTION
The present invention provides novel compounds that bind chemokine receptors and interfere with the binding of the natural ligand thereto. The compounds of the present invention are useful as agents demonstrating protective effects on target cells from HIV infection. Other embodiments of the present invention are compounds that act as antagonists or agonists of chemokine receptors, as well as other biological activities related to the ability of these compounds to inhibit the binding of chemokines to their receptors.
The compound of the invention are of Formulas 1–4, including the pharmaceutically acceptable salts and pro-drug forms thereof. The compounds of Formula (1) are of the formula:




wherein:

    
    
        ring A optionally comprises a heteroatom selected from N, O and S;
        the dotted lines represent optional unsaturation;
        R1, R2 and R3 are non-interfering substituents;
        k is 0–4;
        m is 0–2;
        L1 is a linker of 1.5–10 Å;
        X is unsubstituted or substituted C or N; or is O or S;
        Ar is the residue of an aromatic moiety;
        each n is independently 0–2;
        each R is independently H or alkyl (1–6C); and
        Y is an aromatic or heteroaromatic or other heterocyclic group.
    
    


Preferably, the genus of compounds of Formula 1 excludes the compounds

    AMD7186: N-(5-ethylthiophene-2-ylmethyl)-N′-(2-pyridinylmethyl)-N-(5,6,7,8-tetrahydro-8-quinolinyl)-1,4-benzenedimethanamine,
    AMD7208: N-(1-methylpyrrol-2-ylmethyl)-N′-(2-pyridinylmethyl)-N-(5,6,7,8-tetrahydro-8-quinolinyl)-1,4-benzenedimethanamine,
    AMD7222: N-(1-methylbenzimidazol-2-ylmethyl)-N′-(2-pyridinylmethyl)-N-(5,6,7,8-tetrahydro-8-quinolinyl)-1,4-benzenedimethanamine,
    AMD8780: N-(2-pyridinylmethyl)-N′-(trans-2-aminocyclohexyl)-N′-(5,6,7,8-tetrahydro-8-quinolinyl)-1,4-benzenedimethanamine (hydrobromide salt),
    AMD8931: N-(2-pyridinylmethyl)-N-(4-phenyl-1H-imidazol-2-ylmethyl)-N′-(5,6,7,8-tetrahydro-8-quinolinyl)-1,4-benzenedimethanamine,
    AMD8821: N-(2-pyridinylmethyl)-N′-[2-furanylmethyl]-N′-(5,6,7,8-tetrahydro-8-quinolinyl)-1,4-benzenedimethanamine,
    AMD8828: N-(2-pyridinylmethyl)-N′-[2-[(2-furanylmethyl)amino]ethyl]-N′-(5,6,7,8-tetrahydro-8-quinolinyl)-1,4-benzenedimethanamine,
    AMD8835: N-(2-pyridinylmethyl)-N′-[2-[(1H-imidazol-2-ylmethyl)amino]ethyl]-N′-(1,2,3,4-tetrahydro-1-naphthalenyl)-1,4-benzene dimethanamine,
    AMD8836: N-(2-pyridinylmethyl)-N′-[2-thiopheneylmethyl]-N′-(5,6,7,8-tetrahydro-8-quinolinyl)-1,4-benzenedimethanamine,
    AMD8839: N-(2-pyridinylmethyl)-N′-(trans-2-aminocyclopentyl)-N′-(5,6,7,8-tetrahydro-8-quinolinyl)-1,4-benzenedimethanamine,
    AMD8841: N-(2-pyridinylmethyl)-N′-[2-thiazolylmethyl]-N′-(5,6,7,8-tetrahydro-8-quinolinyl)-1,4-benzenedimethanamine,
    AMD8751: N-(2-pyridinylmethyl)-N′-(1H-imidazol-2-ylmethyl)-N′-(5,6,7,8-tetrahydro-8-quinolinyl)-1,4-benzenedimethanamine,
    AMD8887: N-(2-pyridinylmethyl)-N′-[2-[(1H-imidazol-2-ylmethyl)amino]ethyl]-N′-(5,6,7,8-tetrahydro-8-quinolinyl)-1,4-benzenedimethanamine,
    AMD8728: N-(2-pyridinylmethyl)-N′-[2-pyrrolylmethyl]-N′-(5,6,7,8-tetrahydro-8-quinolinyl)-1,4-benzenedimethanamine,
    AMD8907: N-(2-pyridinylmethyl)-N′-(1H-benzimidazol-2-ylmethyl)-N′-(5,6,7,8-tetrahydro-8-quinolinyl)-1,4-benzenedimethanamine,
    AMD8926: N-(2-pyridinylmethyl)-N′-(5-nitro-1H-benzimidazol-2-ylmethyl)-N′-(5,6,7,8-tetrahydro-8-quinolinyl)-1,4-benzenedimethanamine,
    AMD8927: N-(2-pyridinylmethyl)-N′-(5,6-dimethyl-1H-benzimidazol-2-ylmethyl)-N′-(5,6,7,8-tetrahydro-8-quinolinyl)-1,4-benzenedimethanamine,
    AMD8929: N-(2-pyridinylmethyl)-N′-[(1H)-5-azabenzimidazol-2-ylmethyl]-N′-(5,6,7,8-tetrahydro-8-quinolinyl)-1,4-benzenedimethanamine, and
    AMD8764: N-(2-pyridinylmethyl)-N′-(2-benzoxazolyl)-N′-(5,6,7,8-tetrahydro-8-quinolinyl)-1,4-benzenedimethanamine,

which compounds were disclosed in parent application PCT/CA00/00321.



The compounds of Formula 2 are of the formula




wherein:

    
    
        R, m, n, Ar, and each Y are defined as in Formula 1;
        each Z is independently CR2, NR, O or S, with the proviso that only two Z can be other than CR2; and
        L2 is a linker of 1.5–8 Å.
    
    


The compounds of Formula 3 are of the formula




wherein:

    
    
        W1 is a monocyclic (5–6 membered) or fused bicyclic (8–12 membered) unsubstituted or substituted ring system containing at least one heteroatom selected from N, O and S;
        W2 is H, or is selected from the group consisting of: an optionally substituted C1-6 alkyl group; a C0-6 alkyl group substituted with an optionally substituted aromatic or heterocyclic group; an optionally substituted C0-6 alkylamino or C3-7 cycloalkylamino group; and an optionally substituted carbonyl group or sulfonyl;
        Ar, R and n are defined as in Formula 1, and
    
    






    
    
        is a saturated or unsaturated 5-membered ring containing 1–2 heteroatoms selected from N, O and S.
    
    


The compounds of Formula 4 are of the formula




wherein:

    
    
        W1 and W2 are defined as in Formula 3 and Ar, R and n are defined as in Formula 1; and
    
    






    
    
        represents a fused ring system of 10 members, optionally containing 1 or 2 heteroatoms selected from N, O and S.
    
    


The optional substituents are defined herein infra.
One aspect of the present invention is a pharmaceutical composition comprising a therapeutically effective amount of the compound according to Formulas 1–4. Another aspect is a method of treating a disease of the human body or the bodies of other mammals comprising the administration of such pharmaceutical composition. Still another aspect is a method for blocking or interfering with the binding of a chemokine receptor with its natural ligand, comprising contacting said chemokine receptor with an effective amount of the compound according to Formulas 1–4.
Another aspect is the use of a compound of Formulas 1–4 in the manufacture of a medicament for the treatment of a disease in which blocking or interfering with binding of a chemokine receptor with its natural ligand is advantageous, comprising, for example, formulating a composition comprising a therapeutically effective amount of the compound of Formulas 1–4. The invention includes a method of protecting target cells possessing chemokine receptors, the binding to which by a pathogenic agent results in disease or pathology, comprising administering to a mammalian subject a pharmaceutical composition comprising a therapeutically effective amount of the compound according to Formulas 1–4.
The invention also includes the “pro-drug” forms, that is, protected forms of the compounds, which release the compound after administration to a patient. For example, the compound may carry a protective groups which is split off by hydrolysis in body fluids e.g. in the bloodstream, thus releasing active compound or is oxidized or reduced in body fluids to release the compound. A discussion of pro-drugs may be found in “Smith and Williams' Introduction to the Principles of Drug Design”, H. J. Smith, Wright, Second Edition, London 1988.
Acid addition salts, which are pharmaceutically acceptable, such as salt with inorganic base, a salt with organic base, a salt with inorganic acid, a salt with organic acid, a salt with basic or acidic amino acid, etc. are also encompassed in the present invention. Examples of a salt with an inorganic base include a salt with alkali metal (e.g. sodium, potassium, etc.), alkaline earth metal (e.g. calcium, magnesium, etc.), aluminum, ammonium, etc. Examples of the salt with an organic base include a salt with trimethylamine, triethylamine, pyridine, picoline, ethanolamine, diethanolamine, triethanolamine, dicyclohexylamine, N,N′-dibenzylethylenediamine etc. Examples of the salt with an inorganic acid include a salt with hydrochloric acid, hydrobromic acid, nitric acid, sulfuric acid, phosphoric acid, etc. Examples of the salt with an organic acid include a salt with formic acid, oxalic acid, acetic acid, tartaric acid, methanesulfonic acid, benzenesulfonic acid, malic acid, methanesulfonic acid, benzenesulfonic acid, p-toluenesulfonic acid, etc. Examples of salts with basic amino acids include a salt with arginine, lysine, omithine, etc. Examples of salts with the acidic amino acid include a salt with aspartic acid, glutamic acid, etc. Non-toxic in the present context has to be considered with reference to the prognosis for the infected patient without treatment.
MODES OF CARRYING OUT THE INVENTION
The present invention is directed to compounds of Formulas 1–4 which can act as agents that modulate chemokine receptor activity. Such chemokine receptors include but are not limited to CCR1, CCR2, CCR3, CCR4, CCR5, CCR6, CCR7, CCR8 and CXCR1, CXCR2, CXCR3, CXCR4 and CXCR5.
The present invention provides novel compounds of Formulas 1–4 that demonstrate protective effects on target cells from HIV infection in a manner as to bind specifically to the chemokine receptor, and which affect the binding of a natural ligand or chemokine to a receptor such as CXCR4 and/or CCR5 of a target cell.
In another embodiment, compounds of Formulas 1–4 may be useful as agents which affect chemokine receptors, such as CCR1, CCR2, CCR3, CCR4, CCR5, CCR6, CCR7, CCR8 and CXCR1, CXCR2, CXCR3, CXCR4 and CXCR5 where such chemokine receptors have been correlated as being important mediators of many human inflammatory as well as immunoregulatory diseases and cancer; and a compound that modulates the activity of such chemokine receptors would be useful for the treatment or prevention of such diseases.
The term “modulators” as used herein is intended to encompass antagonist, agonist, partial antagonist, and or partial agonist, inhibitors, and activators. In the preferred embodiment of the present invention, compounds of Formulas 1–4 demonstrate protective effects against HIV infection by inhibiting the binding of HIV to a chemokine receptor such as CXCR4 and/or CCR5 of a target cell, which comprises contacting the target cell with an amount of the compound which is effective at inhibiting the binding of the virus to the chemokine receptor.
The term “therapeutically effective amount” means the amount of the subject compound that will elicit a biological or medical response in a cell, tissue, organ, system, animal or human that is being sought by the researcher, veterinarian, medical doctor or other clinician. The response may be preventive and/or therapeutic.
The term “administration” and or “administering” of the subject compound should be understood to mean as providing a compound of the invention or a pro-drug of a compound of the invention to the individual in need of treatment.
Compounds that inhibit chemokine receptors may be used for the treatment of diseases associated with hematopoiesis, including but not limited to, controlling the side-effects of chemotherapy, enhancing the success of bone marrow transplantation, enhancing wound healing and burn treatment, as well as combating bacterial infections in leukemia.
Compounds that inhibit chemokine receptor activity and function may be used for the treatment of diseases that are associated with inflammation, including but are not limited to, inflammatory or allergic diseases such as asthma, allergic rhinitis, hypersensitivity lung diseases, hypersensitivity pneumonitis, eosinophilic pneumonias, delayed-type hypersensitivity, interstitial lung disease (ILD) (e.g., idiopathic pulmonary fibrosis, or ILD associated with rheumatoid arthritis, systemic lupus erythematosus, ankylosing spondylitis, systemic sclerosis, Sjogren's syndrome, polymyositis or dermatomyositis); systemic anaphylaxis or hypersensitivity responses, drug allergies, insect sting allergies; autoimmune diseases, such as rheumatoid arthritis, psoriatic arthritis, systemic lupus erythematosus, myastenia gravis, juvenile onset diabetes; glomerulonephritis, autoimmune throiditis, graft rejection, including allograft rejection or graft-versus-host disease; inflammatory bowel diseases, such as Crohn's disease and ulcerative colitis; spondyloarthropathies; scleroderma; psoriasis (including T-cell mediated psoriasis) and inflammatory dermatoses such as dermatitis, eczema, atopic dermatitis, allergic contact dermatitis, urticaria, vasculitis (e.g., necrotizing, cutaneous, and hypersensitivity vasculitis); eosinphilic myotis, eosiniphilic fasciitis; and cancers.
Compounds that activate or promote chemokine receptor function may be used for the treatment of diseases that are associated with immunosuppression such as individuals undergoing chemotherapy, radiation therapy, enhanced wound healing and burn treatment, therapy for autoimmune disease or other drug therapy (e.g., corticosteroid therapy) or combination of conventional drugs used in the treatment of autoimmune diseases and graft/transplantation rejection, which causes immunosuppression; immunosuppression due to congenital deficiency in receptor function or other causes; and infectious diseases, such as parasitic diseases, including but not limited to helminth infections, such as nematodes (round worms); Trichuriasis, Enterobiasis, Ascariasis, Hookworm, Strongyloidiasis, Trichinosis, filariasis; trematodes; visceral worms, visceral larva migtrans (e.g., Toxocara), eosinophilic gastroenteritis (e.g., Anisaki spp., Phocanema ssp.), cutaneous larva migrans (Ancylostona braziliense, Ancylostoma caninum); the malaria-causing protozoan Plasmodium vivax, Human cytomegalovirus, Herpesvirus saimiri, and Kaposi's sarcoma herpesvirus, also known as human herpesvirus 8, and poxvirus Moluscum contagiosum. 
Compounds of Formulas 1–4 may be used in combination with any other pharmaceutical composition where such combined therapy may be useful to modulate chemokine receptor activity and thereby prevent and therapeutically treat diseases associated with hematopoiesis, inflammation, autoimmune, inflammatory dermatoses, cancers, inflammatory bowel diseases, and immunoregulatory disorders.
It is also contemplated that the present invention may be used in combinations with one or more agents useful in the prevention or treatment of HIV. Examples of such agents include:

    
    
        (1) nucleotide reverse transcriptase inhibitor such as zidovudine, didanosine, lamivudine, zalcitabine, abacavir, stavudine, adefovir, adefovir dipivoxil, fozivudine todoxil, etc.;
        (2) non-nucleotide reverse transcriptase inhibitor (including an agent having anti-oxidation activity such as immunocal, oltipraz, etc.) such as nevirapine, delavirdine, efavirenz, loviride, immunocal, oltipraz, etc.; and
        (3) protease inhibitors such as saquinavir, ritonavir, indinavir, nelfinavir, amprenavir, palinavir, lasinavir, etc.
    
    


The scope of combinations of compounds of Formulas 1–4 of this invention with HIV agents is not limited to (1), (2), and or (3), but includes in principle, any combination with any pharmaceutical composition useful for the treatment of HIV. Further, in such combinations the compounds of the present invention and other HIV agents may be administered separately or in conjunction. In addition, the administration of one element may be prior to, concurrent to, or subsequent to the administration of other agent(s).
The compounds of Formulas 1–4 in the present invention may be administered by oral, parenteral (e.g., intramuscular, intraperitoneal, intravenous, intracisternal injection or infusion, subcutaneous injection, or implant), by inhalation spray, nasal, vaginal, rectal, sublingual, or topical routes of administration and may be formulated, alone or together, in suitable dosage unit formulations containing conventional non-toxic pharmaceutically acceptable carriers, adjuvants and vehicles appropriate for each route of administration.
The compounds of Formulas 1–4 are all active and used to treat animals, including but not limited to, mice, rats, horses, cattle, sheep, dogs, cats, and monkey. The compounds of the invention are also effective for use in humans.
The compounds of Formulas 1–4 of the present invention may form hydrates or solvates, which are included in the scope of the claims. When the compounds of Formulas 1–4 of the present invention exist as regioisomers, configurational isomers, conformers, or diasteroisomeric forms all such forms and various mixtures thereof are included in the generic formulas. It is possible to isolate individual isomers using known separation and purification methods, if desired. For example, when a compound of Formulas 1–4 of the present invention is a racemate, the racemate can be separated into the (S)-compound and (R)-compound by optical resolution. Individual optical isomers and mixtures thereof are included in the scope of the generic formula.
This invention also relates to a pharmaceutical composition comprising a pharmaceutically acceptable carrier or diluent and an effective amount of compound of Formulas 1–4. A compound of Formulas 1–4 may be administered alone or as an admixture with a pharmaceutically acceptable carrier (e.g., solid formulations such as tablets, capsules, granules, powders, etc.; liquid formulations such as syrups, injections, etc.) may be orally or non-orally administered. Examples of non-oral formulations include injections, drops, suppositories, pessaryies.
In the treatment or prevention of conditions which require chemokine receptor modulation an appropriate dosage level will generally be about 0.01 to 500 mg per kg patient body weight per day which can be administered in singe or multiple doses. Preferably, the dosage level will be about 0.1 to about 250 mg/kg per day. It will be understood that the specific dose level and frequency of dosage for any particular patient may be varied and will depend upon a variety of factors including the activity of the specific compound used, the metabolic stability and length of action of that compound, the age, body weight, general health, sex, diet, mode and time of administration, rate of excretion, drug combination, the severity of the particular condition, and the patient undergoing therapy.
The present invention provides novel compounds that bind chemokine receptors and interfere with the binding of the natural ligand thereto. The compounds of the present invention are useful as agents demonstrating protective effects on target cells from HIV infection. The compounds of the present invention are also useful as antagonists or agonists of chemokine receptors, as well as other biological activities related to the ability of these compounds to inhibit the binding of chemokines to their receptors.
In the compounds of Formulas 1–4, the alkyl represented by R may be straight or branched chain or may be cyclic, and may optionally be substituted by 1–2 substituents selected from halo, hydroxy and alkoxy. Preferably each R is H or lower straight chain alkyl, preferably methyl.
Ar is an aromatic or heteroaromatic moiety, which is a single ring or fused ring system of 5–12 ring members. Exemplary embodiments of Ar include benzene, naphthalene, dihydronaphthalene, tetrahydronaphthalene, pyridine, quinoline, isoquinoline, imidazole, benzimidazole, azabenzimidazole, benzotriazole, furan, benzofuran, thiazole, benzothiazole, oxazole, benzoxazole, pyrrole and indole. Preferred embodiments include phenylene, pyridylene or pyridinylene, more preferably the p-forms, and preferably phenylene.
When compounds of Formulas 1–4 contain elements that are “optionally substituted” these substituents are as follows:
The optional substituents may be halogen, nitro, cyano, carboxylic acid, optionally substituted alkyl, alkenyl or cycloalkyl groups, an optionally substituted hydroxyl group, an optionally substituted thiol group, an optionally substituted amino or acyl group, an optionally substituted carboxylate, carbamate, carboxamide or sulfonamide group, an optionally substituted aromatic or heterocyclic group.
Examples of halogen include fluorine, chlorine, bromine, iodine, etc., with fluorine and chlorine preferred.
Examples of alkyl which may be optionally substituted include C1-10 alkyl, including methyl, ethyl propyl etc.; examples of alkenyl groups which may be optionally substituted include C2-10 alkenyl such as allyl, crotyl, 2-pentenyl, 3-hexenyl, etc.; and examples of cycloalkyl groups which may be optionally substituted, include C3-10 cycloalkyl such as cyclopropyl, cyclobutyl, cyclopentyl, cyclohexyl, cycloheptyl, etc. In these cases, C1-6 alkyl, alkenyl and cycloalkyl are preferred. The optional substituent may also be an optionally substituted aralkyl (e.g. phenyl C1-4 alkyl) or heteroalkyl for example, phenylmethyl (benzyl), phenylethyl, pyridinylmethy, pyridinylethyl, etc. The heterocyclic group may be a 5 or 6 membered ring containing 1–4 heteroatoms.
Examples of optionally substituted hydroxyl and thiol groups include those wherein the substituent is an optionally substituted alkyl (e.g. C1-10 alkyl) such as methyl, ethyl, propyl, isopropyl, butyl, isobutyl, sec-butyl, tert-butyl, pentyl, etc., preferably (C1-6) alkyl; an optionally substituted cycloalkyl (e.g. C3-7 cycloalkyl, etc., such as cyclopropyl, cyclobutyl, cyclopentyl, cyclohexyl, cycloheptyl, etc.); an optionally substituted aralkyl (e.g. phenyl-C1-4 alkyl, e.g. benzyl, phenethyl, etc.). Where there are two adjacent hydroxyl or thiol substituents, the heteroatoms may be connected via an alkylene group such as O(CH2)nO and S(CH2)nS (where n=1–5). Examples include methylenedioxy, ethylenedioxy, etc. Oxides of thio-ether groups such as sulfoxides and sulfones are also encompassed.
Further examples of the optionally substituted hydroxyl group include an optionally substituted C2-4 alkanoyl (e.g. acetyl, propionyl, butyryl, isobutyryl, etc.), C1-4 alkylsufonyl (e.g. methanesulfonyl, ethanesulfonyl, etc.) and an optionally substituted aromatic and heterocyclic carbonyl group including benzoyl, pyridinecarbonyl, etc.
The substituents on optionally substituted amino group may bind to each other to form a cyclic amino group (e.g. 5- to 6-membered cyclic amino, etc., such as tetrahydropyrrole, piperazine, piperidine, pyrrolidine, morpholine, thiomorpholine, pyrrole, imidazole, etc.). Said cyclic amino group may have a substituent, and examples of the substituents include halogen (e.g. fluorine, chlorine, bromine, iodine, etc.), nitro, cyano, hydroxy group, thiol group, amino group, carboxyl group, an optionally halogenated C1-4 alkyl (e.g. trifluoromethyl, methyl, ethyl, etc.), an optionally halogenated C1-4 alkoxy (e.g. methoxy, ethoxy, trifluoromethoxy, trifluoroethoxy, etc.), C2-4 alkanoyl (e.g. acetyl, propionyl, etc.), C1-4 alkylsulfonyl (e.g. methanesulfonyl, ethanesulfonyl, etc.) the number of preferred substituents are 1 to 3.
The amino group may also be substituted once or twice (to form a secondary or tertiary amine) with a group such as an optionally substituted alkyl group including C1-10 alkyl (e.g. methyl, ethyl propyl etc.); an optionally substituted alkenyl group such as allyl, crotyl, 2-pentenyl, 3-hexenyl, etc., or an optionally substituted cycloalkyl group such as cyclopropyl, cyclobutyl, cyclopentyl, cyclohexyl, cycloheptyl, etc. In these cases, C1-6 alkyl, alkenyl and cycloalkyl are preferred. The amine group may also be optionally substituted with an aromatic or heterocyclic group, aralkyl (e.g. phenyl C1-4 alkyl) or heteroalkyl for example, phenyl, pyridine, phenylmethyl (benzyl), phenethyl, pyridinylmethyl, pyridinylethyl etc. The heterocyclic group may be a 5 or 6 membered ring containing 1–4 heteroatoms. The optional substituents of the “optionally substituted amino groups are the same as defined above for the “optionally substituted cyclic amino group.”
The amino group may be substituted with an optionally substituted C2-4 alkanoyl e.g. acetyl, propionyl, butyryl, isobutyryl etc., or a C1-4 alkylsulfonyl (e.g. methanesulfonyl, ethanesulfonyl, etc.) or a carbonyl or sulfonyl substituted aromatic or heterocyclic ring, e.g. benzenesulfonyl, benzoyl, pyridinesulfonyl, pyridinecarbonyl etc. The heterocycles are as defined above.
Examples of the optionally substituted acyl groups include a carbonyl group or a sulfinyl or sulfonyl group binding to hydrogen; or to an optionally substituted alkyl (e.g. C1-10 alkyl such as methyl, ethyl, propyl, isopropyl, butyl, isobutyl, sec-butyl, tert-butyl, pentyl, isopentyl, neopentyl, hexyl, heptyl, octyl, nonyl, decyl, etc., preferably lower (C1-6) alkyl, etc.; an optionally substituted cycloalkyl (e.g. C3-7 cycloalkyl, etc., such as cyclopropyl, cyclobutyl, cyclopentyl, cyclohexyl, cycloheptyl, etc.); an optionally substituted alkenyl (e.g. C2-10 alkenyl such as allyl, crotyl, 2-pentenyl, etc., preferably lower (C2-6) alkenyl, etc.); an optionally substituted cycloalkenyl (e.g. C3-7 cycloalkenyl, etc., such as 2-cyclopentenyl, 2-cyclohexenyl, 2-cyclopentenylmethyl, 2-cyclohexenylmethyl, etc.) an optionally substituted 5- to 6-membered monocyclic aromatic group (e.g. phenyl, pyridyl, etc.).
Examples of the optionally substituted carboxylate group (ester groups) include an optionally substituted alkyl (e.g. C1-10 alkyl such as methyl, ethyl, propyl, isopropyl, butyl, isobutyl, sec-butyl, tert-butyl, pentyl, isopentyl, neopentyl, hexyl, heptyl, octyl, nonyl, decyl, etc., preferably lower (C1-6) alkyl, etc.); an optionally substituted cycloalkyl (e.g. C3-7 cycloalkyl, etc. such as cyclopropyl, cyclobutyl, cyclopentyl, cyclohexyl, cycloheptyl, etc.); an optionally substituted alkenyl (e.g. C2-10 alkenyl such as allyl, crotyl, 2-pentenyl, 3-hexenyl, etc., preferably lower (C2-6) alkenyl, etc.); an optionally substituted cycloalkenyl (e.g. C3-7 cycloalkenyl, etc., such as 2-cyclohexenylmethyl, etc.); an optionally substituted aryl (e.g. phenyl, naphthyl, etc.) and C1-4 aryl for example, benzyl, phenethyl etc. Groups such as methoxymethyl, methoxyethyl, etc., are also encompassed.
Examples of the optionally substituted carboxamide and sulfonamide groups are identical in terms of the amine definition as the “optionally substituted amino group” defined above.
Examples of the optionally substituted aromatic or heterocyclic groups are phenyl, naphthyl, or a 5- or 6-membered heterocyclic ring containing 1–4 heteroatoms. The optional substituents are essentially identical to those listed above.
In the above Formulas 1 and 2, Y is an optionally substituted cyclic or bicyclic group of 5–11 members, for example a six membered heteroaromatic group, such as a heterocyclic group or aromatic including heteroaromatic groups. Examples of optionally substituted aromatic groups include benzene and naphthalene, or dihydronaphthalene and tetrahydronaphthalene. Examples of optionally substituted heterocyclic groups include 5 to 6-membered saturated, partially saturated, or aromatic heterocyclic rings containing 1 to 4 heteroatoms selected from nitrogen, oxygen and sulfur. The heterocycles may be pyridine, quinoline, isoquinoline, imidazole, benzimidazole, azabenzimidazole, benzotriazole, furan, benzofuran, thiazole, benzothiazole, oxazole, benzoxazole, pyrrole, indole, indoline, indazole, pyrrolidine, pyrrolidone, pyrroline, piperidine, piperazine, tetrahydroquinoline, tetrahydroisoquinoline, pyrazole, thiophene, isoxazole, isothiazole, triazole, tetrazole, oxadiazole, thiadiazole, morpholine, thiamorpholine, pyrazolidine, imidazolidine, imidazoline, tetrahydropyran, dihydropyran, benzopyran, dioxane, dithiane, tetrahydrofuran, tetrahydrothiophene, dihydrofuran, dihydrothiophene, etc. Oxides of the nitrogen and sulfur containing heterocycles are also included in the present invention. The optional substituents for the fused or unfused aromatic or heterocyclic rings are identical to those described above.
In the above Formula 1, examples of the optionally substituted ring system containing ring A are dihydroquinoline, tetrahydroquinoline, pyranopyridine, dihydropyranopyridine, thiapyranopyridine, dihydrothiapyranopyridine, dihydronaphthyridine, tetrahydronaphthyridine. Oxides of sulfur-containing heterocycles are also encompassed in the present invention. In the above ring system containing Ring A, the optional nitrogen atom may be substituted with hydrogen, a substituted alkyl, alkenyl, cycloalkyl or aryl group, or may be the nitrogen atom of a carboxamide, carbamate or sulfonamide. Preferred for m is m=1, it is preferred that ring A be saturated. The most preferred embodiment is tetrahydroquinoline.
In the above Formula 1, X may be CH (pyrrole), O (oxazole), S (thiazole), NH or NR (imidazole) where R is a C1-6 alkyl group or acyl, sulfonyl group. In Formula 1, two adjacent R1 and/or R2 and R3 may be joined to form an optionally substituted, fused 5–7 membered ring. Examples of fused ring systems include but are not limited to indole, tetrahydroindole, benzimidazole, tetrahydrobenzimidazole, azabenzimidazole, benzoxazole, tetrahydrobenzoxazole, benzothiazole, tetrahydrobenzothiazole. The preferred ring systems resulting from R2 and R3 include benzothiazole and benzoimidazole.
The permitted number of substituents on the fused ring system containing Ring A in Formula 1 is 0–4, preferably 0–2. The substituents (R1) are as described above. Preferred substituents are halogen (fluorine, chlorine etc.), nitro, cyano, hydroxy group, thiol group, amino group, carboxyl group, carboxylate group, sulfonate group, sulfonamide group, carboxamide group, an optionally halogenated C1-4alkyl, an optionally halogenated C1-4alkoxy (e.g. trifluoromethoxy, etc.), C2-4alkanoyl (e.g. acetyl, propionyl, etc.) or aroyl, a C1-4 alkylsulfonyl (e.g. methanesulfonyl, ethanesulfonyl, etc.), an optionally substituted aryl or heterocyclic group. The number of substituents (listed above as optional substituents) on the said groups is preferably 0 to 3, more preferably 0–1.
The substituents R2 and R3 are also exemplified by the optional substituents listed above, and preferred embodiments include those which are preferred embodiments for R1 or R2 and R3 can also each independently be hydrogen. A preferred embodiment for R2−R3 is that wherein the substituents are covalently linked so as to form a benzene ring. Thus, preferred embodiments of the ring system coupled to L1 include benzimidazole, indole, benzoxazole and benzothiazole.
In Formula 1, L1 is a linker that spaces the attachment atom of the 5-membered ring containing X 1.5–10 Å from N. The attachment atom is preferably position 2; however, as indicated in the formula, alternative positions of attachment may also be employed, preferably positions 4 or 5, in which case, one of the substitutents R2 or R3, as the case may be, will be present at position 2. Typical L1 linkers include a covalent bond, alkylene or heteroalkylene chains of 1–6 members, preferably 1–4, and more preferably 1–2. The heteroatom in heteroalkylene may be N, O, or S, preferably N. A preferred embodiment of L1 is —CH2—.
In Formula 2, L2 spaces the attachment atom of ring A1 to N at a distance of 1.5–8 Å. Typical linkers are similar to those described as L1.
With regard to ring A1 in Formula 2, in preferred embodiments only one Z is other than CR2 and is preferably NR. Preferred embodiments for R in this context are H and lower alkyl, especially methyl. Especially preferred for m is 1.
Preferred embodiments for the Y coupled to L2 are monocylic aromatic/heteromatic rings, such as phenyl, pyridyl, pyrimidyl, imidazolyl or fused rings to, for example, a benzomoiety, and the like.
In the compounds of Formulas 3 and 4, included as preferred embodiments for W1 are phenyl, pyridyl, pyrimidyl, imidazolyl, thiophenylyl, and fused ring systems preferably including heteroatoms including such systems which are partially saturated; all of the foregoing may be substituted as described above. Preferred numbers of substituents is 0–2 for monocyclic embodiments and 0–4, more preferably 0–3 for fused ring embodiments. Especially preferred are the fused ring system including ring A in Formula 1 and the monocylic ring A1 from Formula 2.
In Formulas 3 and 4, preferred forms of W2 are H, substituents that include aromatic or heteroaromatic substituent. Also preferred are alkyl substituents as in Formula 2. Especially preferred are those which include the (describe ring) substituent of Formula 1.
In Formula 3, ring B is preferably imidazole, thiazole, pyrrole, which may be substituted by 1–2 substituents, typically lower alkyl, trifluoromethyl, lower alkoxy, phenyl, optionally coupled through sulfonyl or carbonyl, and optionally substituted, or halo.
In Formula 4, the ring system CD is preferably a 9-membered system including at least one heteroatom. Typically the heteroatom is S or N. The CD system is preferably substituted with 0–2, preferably 0–1 substituents, preferably those listed above with respect to ring B.
L1 is a linker that spaces the C atom of




    
    
        1.5–10 Å from N. Typical linkers include a covalent bond, alkylene or heteroalkylene chains of 1–6, preferably 1–4, more preferably 1–2 atoms. The heteroatom may be O, S or N, preferably N.
    
    


In the above Formula 2, examples of the optionally substituted cycloalkyl or heterocyclic ring represented by A1 include, but are not limited to, cyclopentyl, cyclohexyl, cycloheptyl, tetrahydrofuran, tetrahydrothiophene (thiolane), tetrahydropyran, tetrahydrothiapyran (pentamethylene sulfide), oxepine, thiepin, pyrollidine, piperidine etc., cyclohexyl is preferred.
The novel compounds of Formulas 1–4 of the present invention may be formulated as pharmaceutical compositions that may be administered topically; percutaneously, including intravenously; orally; and by other standard routes of pharmaceutical administration to mammalian subjects as determined according to routine clinical practice.
Having now generally described the invention, the same will be more readily understood through reference to the following examples which are provided by way of illustration, and are not intended to be limiting of the present invention, unless specified. Parent application PCT/CA00/00321 discloses the following compounds:












AMD7186: N-(5-ethylthiophene-2-ylmethyl)-N′-(2-pyridinylmethyl)-N-(5,6,7,8-


tetrahydro-8-quinolinyl)-1,4-benzenedimethanamine


AMD7208: N-(1-methylpyrrol-2-ylmethyl)-N′-(2-pyridinylmethyl)-N-(5,6,7,8-


tetrahydro-8-quinolinyl)-1,4-benzenedimethanamine


AMD7222: N-(1-methylbenzimidazol-2-ylmethyl)-N′-(2-pyridinylmethyl)-N-(5,6,7,8-


tetrahydro-8-quinolinyl)-1,4-benzenedimethanamine


AMD8780: N-(2-pyridinylmethyl)-N′-(trans-2-aminocyclohexyl)-N′-(5,6,7,8-


tetrahydro-8-quinolinyl)-1,4-benzenedimethanamine (hydrobromide salt)


AMD8931: N-(2-pyridinylmethyl)-N-(4-phenyl-1H-imidazol-2-ylmethyl)-N′-(5,6,7,8-


tetrahydro-8-quinolinyl)-1,4-benzenedimethanamine.


AMD8821: N-(2-pyridinylmethyl)-N′-[2-furanylmethyl]-N′-(5,6,7,8-tetrahydro-8-


quinolinyl)-1,4-benzenedimethanamine


AMD8828: N-(2-pyridinylmethyl)-N′-[2-[(2-furanylmethyl)amino]ethyl]-N′-(5,6,7,8-


tetrahydro-8-quinolinyl)-1,4-benzenedimethanamine


AMD8835: N-(2-pyridinylmethyl)-N′-[2-[(1H-imidazol-2-ylmethyl)amino]ethyl]-N′-


(1,2,3,4-tetrahydro-1-naphthalenyl)-1,4-benzene dimethanamine


AMD8836: N-(2-pyridinylmethyl)-N′-[2-thiopheneylmethyl]-N′-(5,6,7,8-tetrahydro-


8-quinolinyl)-1,4-benzenedimethanamine


AMD8839: N-(2-pyridinylmethyl)-N′-(trans-2-aminocyclopentyl)-N′-(5,6,7,8-


tetrahydro-8-quinolinyl)-1,4-benzenedimethanamine


AMD8841: N-(2-pyridinylmethyl)-N′-[2-thiazolylmethyl]-N′-(5,6,7,8-tetrahydro-8-


quinolinyl)-1,4-benzenedimethanamine


AMD8751: N-(2-pyridinylmethyl)-N′-(1H-imidazol-2-ylmethyl)-N′-(5,6,7,8-


tetrahydro-8-quinolinyl)-1,4-benzenedimethanamine


AMD8887: N-(2-pyridinylmethyl)-N′-[2-[(1H-imidazol-2-ylmethyl)amino]ethyl]-N′-


(5,6,7,8-tetrahydro-8-quinolinyl)-1,4-benzenedimethanamine


AMD8728: N-(2-pyridinylmethyl)-N′-[2-pyrrolylmethyl]-N′-(5,6,7,8-tetrahydro-8-


quinolinyl)-1,4-benzenedimethanamine.


AMD8907: N-(2-pyridinylmethyl)-N′-(1H-benzimidazol-2-ylmethyl)-N′-(5,6,7,8-


tetrahydro-8-quinolinyl)-1,4-benzenedimethanamine


AMD8926: N-(2-pyridinylmethyl)-N′-(5-nitro-1H-benzimidazol-2-ylmethyl)-N′-


(5,6,7,8-tetrahydro-8-quinolinyl)-1,4-benzenedimethanamine


AMD8927: N-(2-pyridinylmethyl)-N′-(5,6-dimethyl-1H-benzimidazol-2-ylmethyl)-


N′-(5,6,7,8-tetrahydro-8-quinolinyl)-1,4-benzenedimethanamine


AMD8929: N-(2-pyridinylmethyl)-N′-[(1H)-5-azabenzimidazol-2-ylmethyl]-N′-


(5,6,7,8-tetrahydro-8-quinolinyl)-1,4-benzenedimethanamine


AMD8764: N-(2-pyridinylmethyl)-N′-(2-benzoxazolyl)-N′-(5,6,7,8-tetrahydro-8-


quinolinyl)-1,4-benzenedimethanamine









In preferred embodiments, the compounds of Formulas 1–4 are described in the above-defined terms, but with the proviso that the group of compounds does not include those listed above. Disclosed herein are additional compounds of Formulas 1–4, such as those set forth in the following examples.
EXPERIMENTAL
The intermediates 8-hydroxy-5,6,7,8-tetrahydroquinoline, 8-amino-5,6,7,8-tetrahydroquinoline, N-(2-nitrobenzenesulfonyl)-N-(2-pyridinylmethyl)-N′-(5,6,7,8-tetrahydro-8-quinolinyl)-1,4-benzenedimethanamine and N-(tert-butoxycarbonyl)-N-(2-pyridinylmethyl)-N′-(5,6,7,8-tetrahydro-8-quinolinyl)-1,4-benzenedimethanamine were prepared according to the procedures described in Bridger et al. PCT International application PCT/CA00/00321.
General Procedures
The chloromethyl benzimidazole derivatives used for the synthesis of the examples described below were prepared by reaction of substituted ortho-phenylenediamines with chloroacetic acid according to literature procedures (Phillips, M. A. J. Chem. Soc. 1928, 2393; Goker, H.; Kus, C. Arch. Pharm. (Weinheim) 1995, 328, 425–430).
General Procedure for Preparation of 2-chloromethylbenzimidazole Derivatives from o-phenylenediamines
An appropriately substituted o-phenylenediamine (1.0 mmol) and chloroacetic acid (3.0–5.0 mmol) were refluxed in 4N HCl (10 mL) for 3–16 hours. Upon cooling, the mixture was neutralized to pH ̃6 with a saturated aqueous solution of sodium carbonate. The precipitated product was then isolated by filtration or by extraction with an appropriate organic solvent, such as ethyl acetate. The isolated substituted 2-chloromethylbenzimidazole could then be used in the next reaction without further purification, or alternatively, could be further purified by flash chromatographic techniques.
In cases where the requisite substituted ortho-phenylenediamine was not commercially available, the intermediate diamine was prepared by a two-step nucleophilic amination of an appropriately substituted nitrobenzene derivative followed by reduction.
General Procedure for Nucleophilic Amination of Nitrobenzenes to Form 2-aminonitrobenzenes
Using literature procedures (Seko, S.; Kawamura, N. J. Org. Chem. 1996, 61, 442–443) a substituted nitrobenzene (10 mmol) and O-Methylhydroxyamine hydrochloride (1.04 g, 12.5 mmol) in DMF (6 mL) were added slowly to a 0° C. solution of potassium t-butoxide (3.36 g, 30 mmol) and copper (I) chloride (200 mg, 2.0 mmol) in DMF (20 mL). The resulting deep-red solution was then stirred, gradually warming to RT for 5–16 hours (monitored by analytical tlc). The reaction was then quenched with saturated NH4Cl and extracted with dichloromethane. The combined organic fractions were then dried over anhydrous MgSO4 and concentrated. The residue was then purified by column chromatography on silica gel (20–50% ethyl acetate in hexanes) to afford a mixture of isomeric amino-nitrobenzenes, including the desired 1-nitro-2-amino isomer.
General Procedure for Reduction of 2-aminonitrobenzenes to o-phenylenediamines
To a solution of a substituted 2-aminonitrobenzene (5 mmol) in methanol (50 mL) was added 10% palladium on carbon (100 mg). The resulting suspension was then placed under 1 atm of hydrogen gas, and was stirred for 3 hours at RT. Celite was then added to the reaction, and the contents were filtered through a celite plug. The filtrates were then concentrated to afford the desired substituted o-phenylenediamine in near-quantitative yields.
In order to prepare the required chloromethylbenzoxazole and chloromethylbenzothiazole derivatives, the following procedure was used:
General Procedure for the Preparation of 2-chloromethylbenzothiazoles or 2-chloromethylbenzoxazoles from 2-aminothiophenols or 2-aminophenols Respectively
Using literature procedures (Addison, A. W.; Nageswara Rao, T.; Wahlgren, C. G. J. Heterocyclic Chem. 1983, 20, 1481–1484) a substituted 2-aminophenol (or a 2-aminothiophenol (5 mmol)) was mixed with chloroacetic acid (940 mg, 10 mmol) in polyphosphoric acid (5 mL), and the viscous mixture was then heated to 120° C. for 3 hours. The reaction was then cooled, and diluted with water ( ̃20 mL) and then neutralized with potassium carbonate to pH ̃7. The mixture was then extracted with ethyl acetate, and the combined organic fractions were then dried over MgSO4 and concentrated. The residue was then purified by column chromatography on silica gel (50% ethyl acetate in hexanes) to afford the desired 2-chloromethylbenzoxazole (or 2-chloromethylbenzothiazole).
General Procedure for Alkylation of N-(tert-butoxycarbonyl)-N-(2-pyridinylmethyl)-N′-(5,6,7,8-tetrahydro-8-quinolinyl)-1,4-benzenedimethanamine with 2-chloromethyl-benzimidazole Derivatives
Preparation of N-(tert-butoxycarbonyl)-N-(2-pyridinylmethyl)-N′-(1-H-benzimidazol-2-ylmethyl)-N′-(5,6,7,8-tetrahydro-8-quinolinyl)-1,4-benzenedimethanamine.
To a solution of a substituted 2-chloromethylbenzimidazole (1.0 mmol) in DMF (8 mL) was added N-(tert-butoxycarbonyl)-N-(2-pyridinylmethyl)-N′-(5,6,7,8-tetrahydro-8-quinolinyl)-1,4-benzenedimethanamine (572 mg, 1.25 mmol), then diisopropylethylamine (1.5 mmol, 0.27 mL). The resulting mixture was then heated to 80° C. for 3–16 hours, monitored by analytical thin layer chromatography. After cooling, the reaction was washed with a saturated ammonium chloride solution, then extracted with ethyl acetate. The combined organic fractions were then dried over MgSO4 and concentrated in vacuo to give an oil, which was purified by column chromatography on silica gel (2–10% MeOH in CH2Cl2) to afford the desired alkylated product.
General Procedure A: Direct Reductive Amination with NaBH3CN
To a stirred solution of the amine (1 equivalent) in anhydrous methanol (concentration  ̃0.1 M), at room temperature, was added the carbonyl compound ( ̃1–2 equivalents) in one portion. Once the carbonyl had dissolved ( ̃5 minutes), NaBH3CN ( ̃2–4 equiv.) was added in one portion and the resultant solution was stirred at room temperature. The solvent was removed under reduced pressure and CH2Cl2 (20 mL/mmol of amine) and brine or 1.0 M aqueous NaOH (10 mL/mmol amine) were added to the residue. The phases were separated and the aqueous phase was extracted with CH2Cl2 (3×10 mL/mmol amine). The combined organic phases were dried (Na2SO4) and concentrated. The crude material was purified chromatography.
General Procedure B: Direct Reductive Amination with NaBH(OAc)3 
To a stirred solution of the amine (1 equivalent) in CH2Cl2 (concentration  ̃0.2 M), at room temperature, was added the carbonyl compound ( ̃1–2 equivalents), glacial acetic acid (0–2 equivalents) and, NaBH(OAc)3 ( ̃1.5–3 equiv.) and the resultant solution was stirred at room temperature. The reaction mixture was poured into either saturated aqueous NaHCO3 or 1.0 M aqueous NaOH (10 mL/mmol amine). The phases were separated and the aqueous phase was extracted with CH2Cl2 (3×10 mL/mmol amine). The combined organic phases were dried (Na2SO4) and concentrated. The crude material was purified chromatography.
General Procedure C: Deprotection of the 2-nitobenzenesulfonyl Group (Nosyl)
To a stirred solution of the nosyl-protected amine (1 equivalent) in anhydrous CH3CN (or DMF) (concentration  ̃0.05 M), at room temperature, was added thiophenol (4–8 equiv.) followed by powdered K2CO3 (8–12 equivalents). The resulting bright yellow solution was stirred at room temperature (or 50° C.) for 1–24 hours. The solvent was removed under reduced pressure and CH2Cl2 (10 mL/mmol amine) and water (2 mL/mmol amine) were added to the residue. The phases were separated and the aqueous phase was extracted with CH2Cl2 (3×5 mL). The combined organic phases were dried (Na2SO4) and concentrated. Purification of the crude material by chromatography provided the free base.
Alternative work-up: the reaction mixture was filtered and concentrated to provide a yellow oil which was purified by chromatography on basic alumina (eluant CH2Cl2 then 20:1 CH2Cl2—CH3OH) and provided the free base as a colorless oil.
General Procedure D: Salt Formation Using Saturated HBr(g) in Acetic Acid
To a solution of the free base in glacial acetic acid (or dioxane) (2 mL) was added, a saturated solution of HBr(g) in acetic acid (or dioxane) (2 mL). A large volume of ether (25 mL) was then added to precipitate a solid, which was allowed to settle to the bottom of the flask and the supernatant solution was decanted. The solid was washed by decantation with ether (3×25 mL) and the remaining traces of solvent were removed under vacuum. For additional purification (where necessary), the solid can be dissolved in methanol and re-precipitated with a large volume of ether. Washing the solid with ether by decantation, followed by drying of the solid in vacuo (0.1 Torr) gave the desired compound.
General Procedure E: Reaction of Alcohols with Methanesulfonyl Chloride
To a stirred solution of the alcohol (1 equivalent) and Et3N (1.5–2 equivalents) in CH2Cl2 (or THF) (concentration  ̃0.1 M) at room temperature (or 0° C.) was added methanesulfonyl chloride ( ̃1.5 equivalents) and the reaction stirred at room temperature for 0.5–1 h. The reaction mixture was poured into either saturated aqueous NaHCO3 or saturated NH4Cl (10 mL/mmol alcohol). The phases were separated and the aqueous phase extracted with CH2Cl2 (3×10 mL/mmol amine). The combined organic phases were dried (Na2SO4) and concentrated under reduced pressure. The crude material was either purified by chromatography or used without further purification in the N-alkylation step.
General Procedure F: SEM-deprotection
To a stirred solution of the SEM-protected compound (1 equiv.) was added 6N HCl (30 mL/mmol), and the resultant solution was stirred at 50° C. for indicated time. The solution was diluted with water (50 mL/mmol), and it was neutralised with NaHCO3 and extracted with EtOAc (3×100 mL/mmol). The combined organic phases were dried (Na2SO4) and concentrated. The crude material was purified by chromatography.


EXAMPLE: 1




AMD8936: Preparation of N-(2-pyridinylmethyl)-N′-(5-trifluoromethyl-1-H-benzimidazol-2-ylmethyl)-N′-(5,6,7,8-tetrahydro-8-quinolinyl)-1,4-benzenedimethanamine (hydrobromide salt)
A mixture of 4-trifluoromethyl-1,2-phenylenediamine (880 mg, 5.0 mmol) and chloroacetic acid (940 mg, 10 mmol) were refluxed in 4N HCl (10 mL) for 16 hours to give, after work-up and chromatography, 5-trifluoromethyl-2-chloromethylbenzimidazole (380 mg, 32%) as a purple powder: 1H NMR (CDCl3) 4.86 (s, 2H), 7.52 (dd, 1H, J=8.5, 1.0 Hz), 7.67 (d, 1H, J=8.5 Hz), 7.90 (br s, 1H), 10.0 (br s, 1H).
A solution of 5-trifluoromethyl-2-chloromethylbenzimidazole (200 mg, 0.865 mmol), N-(tert-butoxycarbonyl)-N-(2-pyridinylmethyl)-N′-(5,6,7,8-tetrahydro-8-quinolinyl)-1,4-benzenedimethanamine (440 mg, 0.96 mmol) and diisopropylethylamine (0.25 mL, 1.44 mmol) were stirred at 80° C. in DMF (8 mL) for 16 hours to yield, after work-up and chromatography, the desired N-(tert-butoxycarbonyl)-N-(2-pyridinylmethyl)-N′-(5-trifluoromethyl-1-H-benzimidazol-2-ylmethyl)-N′-(5,6,7,8-tetrahydro-8-quinolinyl)-1,4-benzenedimethanamine as a pale yellow foam (128 mg, 23%). 1H NMR (CDCl3) 1.40 (s, 9H), 2.04 (m, 2H), 2.27 (m, 1H), 2.71 (m, 1H), 2.82–2.88 (m, 2H), 3.72 (s, 2H), 3.95 (d, 1H, J=16.3 Hz), 4.04 (dd, 1H, J=5.8, 6.3 Hz), 4.07 (d, 1H, J=16.3 Hz), 4.37 (br s, 2H), 4.44 (m, 2H), 7.06 (br s, 2H), 7.14–7.26 (m, 5H), 7.24 (m, 2H), 7.45 (d, 2H, J=6 Hz), 7.62 (dd, 1H, J=5.4, 6.1 Hz), 8.44 (d, 1H, J=5.4 Hz), 8.80 (m, 1H).
Using general procedure D: the foam from above was converted to the hydrobromide salt with simultaneous deprotection of the BOC group to provide AMD8936 (110 mg) as a beige solid. 1H NMR (D2O) 1.71–1.79 (m, 1H), 2.08–2.19 (m, 2H), 2.29–2.35 (m, 1H), 2.41–3.45 (m, 1H), 3.01–3.03 (m, 2H), 3.68 (dd, 2H, J=14.1, 13.2 Hz), 3.82 (dd, 2H, J=17.4, 8.1 Hz), 4.04 (s, 2H), 4.47 (d, 1H, J=16.5 Hz), 4.65 (d, 1H, J=16.5 Hz), 4.73 (m, 1H); 7.00 (d, 2H, J=8.1 Hz), 7.20 (d, 2H, J=8.1 Hz), 7.39 (d, 2H, J=8.1 Hz), 7.48 (dd, 1H, J=6.3, 4.8 Hz), 7.70 (s, 2H), 7.88–7.94 (m, 3H), 8.39 (d, 1H, J=7.8 Hz), 8.54 (d, 1H, J=5.4 Hz), 8.75 (d, 1H, J=5.7 Hz). 13C NMR (D2O) □ 20.99, 27.84, 49.07, 50.11, 50.32, 56.69, 63.35, 66.47, 113.4 (m), 115.09, 123.59, 126.23 (2C), 126.36, 128.53, 130.06 (2C), 130.23, 130.99, 132.38, 138.24, 139.69, 141.08, 142.58, 147.45, 148.01, 148.36, 150.79, 154.64, 161.19. ES-MS m/z 557 (M+H). Anal. Calcd. for C32H31N6F3.4.3HBr.4.3H2O: C, 39.22; H, 4.51; N, 8.58; Br, 34.92. Found: C, 38.93; H, 4.32; N, 8.49; Br, 35.21.
EXAMPLE: 2




AMD8927: Preparation of N-(2-pyridinylmethyl)-N′-(5,6-dimethyl-1-H-benzimidazol-2-ylmethyl)-N′-(5,6,7,8-tetrahydro-8-quinolinyl)-1,4-benzenedimethanamine (Hydrobromide Salt)
A mixture of 4,5-dimethyl-1,2-phenylenediamine (680 mg, 5.0 mmol) and chloroacetic acid (940 mg, 10 mmol) were refluxed in 4N HCl (10 mL) for 16 hours to give, after work-up and chromatography, 5-trifluoromethyl-2-chloromethylbenzimidazole (530 mg, 54%) as a beige powder: 1H NMR (CDCl3) 1.25 (br s, 12.39 (s, 6H), 4.83 (s, 2H), 7.36 (br s, 2H).
A solution of 5-dimethyl-2-chloromethylbenzimidazole (195 mg, 1.0 mmol), N-(2-nitrobenzenesulfonyl)-N-(2-pyridinylmethyl)-N′-(5,6,7,8-tetrahydro-8-quinolinyl)-1,4-benzenedimethanamine (543 mg, 1.0 mmol) and diisopropylethylamine (0.26 mL, 1.50 mmol) were stirred at 80° C. in DMF (8 mL) for 16 hours to yield, after work-up and chromatography, the desired N-(2-nitrobenzenesulfonyl)-N-(2-pyridinylmethyl)-N′-(5-dimethyl-1-H-benzimidazol-2-ylmethyl)-N′-(5,6,7,8-tetrahydro-8-quinolinyl)-1,4-benzenedimethanamine as a pale yellow foam (280 mg, 39%).
Using general procedure C: N-(2-nitrobenzenesulfonyl)-N-(2-pyridinylmethyl)-N′-(5-dimethyl-1-H-benzimidazol-2-ylmethyl)-N′-(5,6,7,8-tetrahydro-8-quinolinyl)-1,4-benzenedimethanamine (280 mg, 0.39 mmol) was treated with thiophenol (0.160 mL, 1.56 mmol) and potassium carbonate (270 mg, 1.95 mmol) in acetonitrile (8 mL) to afford, after work-up and chromatography, the N-(2-pyridinylmethyl)-N′-(5-dimethyl-1-H-benzimidazol-2-ylmethyl)-N′-(5,6,7,8-tetrahydro-8-quinolinyl)-1,4-benzenedimethanamine (181 mg, 90%). 1H NMR (CDCl3) 1.53 (m, 1H), 1.92 (m, 1H), 2.16 (m, 1H), 2.25 (s, 6H), 2.89–3.01 (m, 2H), 3.36 (br s, 4H), 3.53 (dd, 2H, J=16.8, 11.4 Hz), 3.66 (s, 1H), 3.81 (s, 2H), 3.88 (m, 1H), 7.08–7.30 (m, 10H), 7.68 (t, 1H, J=6.4 Hz), 8.48 (d, 1H, J=5.4 Hz), 8.52 (d, 1H, J=5.9 Hz).
Using general procedure D: the material from above was converted to the hydrobromide salt to provide AMD8927 (188 mg) as a beige solid. 1H NMR (D2O) 1.89 (m, 1H), 2.20 (s, 6H), 2.28 (m, 2H), 2.41 (m, 1H), 3.02 (m, 2H), 3.54 (s, 2H), 3.79 (m, 2H), 3.87 (s, 2H), 4.36 (d, 1H, J=16.8 Hz), 4.57 (d, 1H, J=16.8 Hz), 4.71 (m, 1H), 7.04 (d, 2H, J=7.5 Hz), 7.21 (d, 2H, J=7.5 Hz), 7.29 (s, 2H), 7.63 (d, 1H, J=7.8 Hz), 7.72 (t, 1H, J=6.4 Hz), 7.93 (t, 1H, J=6.8 Hz), 8.19 (t, 1H, J=7.8 Hz), 8.39 (d, 1H, J=7.8 Hz), 8.67 (d, 1H, J=4.8 Hz), 8.74 (d, 1H, J=5.1 Hz). 13C NMR (D2O) □ 14.52, 19.81 (2C), 20.44, 27.85, 44.66, 50.14, 56.76, 63.31, 66.46, 113.43 (2C), 116.12, 126.49, 129.00 (2C), 129.71, 130.11 (2C), 130.61, 138.86 (2C), 136.74 (2C), 138.23, 139.68, 141.03, 142.83, 147.42, 147.93, 148.29, 150.33, 150.81. ES-MS m/z 517 (M+H). Anal. Calcd. for C33H36N6.4.1HBr.1.6H2O.1.1HOAc: C, 44.82; H, 5.10; N, 8.91; Br, 34.73. Found: C, 44.67; H, 5.08; N, 8.88; Br, 34.89.
EXAMPLE: 3




AMD8937: Preparation of N-(2-pyridinylmethyl)-N′-(5-fluoro-1-H-benzimidazol-2-ylmethyl)-N′-(5,6,7,8-tetrahydro-8-quinolinyl)-1,4-benzenedimethanamine (hydrobromide salt)
A mixture of 4-fluoro-1,2-phenylenediamine (630 mg, 5.0 mmol) and chloroacetic acid (940 mg, 10 mmol) were refluxed in 4N HCl (10 mL) for 16 hours to give, after work-up and chromatography, 5-fluoro-2-chloromethylbenzimidazole (330 mg, 36%) as a purple powder: 1H NMR (CDCl3) 4.80 (s, 2H), 7.00 (dd, 1H, J=8.2, 1.9 Hz), 7.24 (d, 1H, J=8.2 Hz), 7.50 (dd, 1H, J=2.9, 1.9 Hz), 10.0 (br s, 1H).
A solution of 5-fluoro-2-chloromethylbenzimidazole (158 mg, 0.86 mmol), N-(tert-butoxycarbonyl)-N-(2-pyridinylmethyl)-N′-(5,6,7,8-tetrahydro-8-quinolinyl)-1,4-benzenedimethanamine (440 mg, 0.96 mmol) and diisopropylethylamine (0.25 mL, 1.44 mmol) were stirred at 80° C. in DMF (8 mL) for 16 hours to yield, after work-up and chromatography, the desired N-(tert-butoxycarbonyl)-N-(2-pyridinylmethyl)-N′-(5-trifluoromethyl-1-H-benzimidazol-2-ylmethyl)-N′-(5,6,7,8-tetrahydro-8-quinolinyl)-1,4-benzenedimethanamine as a pale yellow foam (146 mg, 28%). 1H NMR (CDCl3) 1.40 (s, 9H), 1.72 (m, 1H), 2.08 (m, 1H), 2.26 (m, 1H), 2.70–2.96 (m, 3H), 3.71 (s, 2H), 3.94 (d, 1H, J=16.9 Hz), 4.04 (m, 2H), 4.38–4.49 (m, 4H), 6.94 (m, 1H), 7.06–7.33 (m, 11H), 8.44 (d, 1H, J=4.8 Hz), 8.68 (d, 1H, J=5.1 Hz).
Using general procedure D: the foam from above was converted to the hydrobromide salt with simultaneous deprotection of the BOC group to provide AMD8937 (171 mg) as a beige solid. 1H NMR (D2O) 1.87 (m, 1H), 2.04 (m, 2H), 2.28 (m, 1H), 2.99 (m, 2H), 3.76 (dd, 2H, J=12.6, 8.1 Hz), 3.89 (s, 2H), 4.22 (s, 2H), 4.50 (d, 1H, J=16.5 Hz), 4.62 (d, 1H, J=16.5 Hz), 4.73 (m, 1H), 7.07 (d, 2H, J=8.1 Hz), 7.10 (dd, 1H, J=8.4, 2.4 Hz), 7.23 (d, 2H, J=16.5 Hz), 7.33 (dd, 1H, J=8.4, 2.4 Hz), 7.53 (dd, 1H, J=9.3, 4.5 Hz), 7.66 (d, 1H, J=7.8 Hz), 7.71 (dd, 1H, J=6.9, 5.7 Hz), 7.90 (dd, 1H, J=7.8, 6.9 Hz), 8.18 (dt, 1H, J=7.8, 1.8 Hz), 8.38 (d, 1H, J=7.8 Hz), 8.65 (d, 1H, J=4.8 Hz), 8.73 (d, 1H, J=5.1 Hz). 13C NMR (D2O). 20.44, 20.92, 48.93, 50.20, 50.46, 57.31, 63.14, 115.52, 120.22, 126.12, 126.34, 126.49, 126.99, 130.02, 130.27 (2C), 130.94 (2C), 138.25, 139.14, 139.66, 141.03, 141.19, 142.98, 145.22, 147.15, 149.30, 151.91, 153.62, 160.48. ES-MS m/z 507 (M+H). Anal. Calcd. for C31H31N6F.4.1HBr.1.6H2O.0.8HOAc: C, 42.78; H, 4.57; N, 9.18; Br, 35.79. Found: C, 42.75; H, 4.38; N, 9.20; Br, 35.74.
EXAMPLE: 4




AMD9365: Preparation of N-(2-pyridinylmethyl)-N′-(4,5-dimethyl-1-H-benzimidazol-2-ylmethyl)-N′-(5,6,7,8-tetrahydro-8-quinolinyl)-1,4-benzenedimethanamine (hydrobromide salt)
A mixture of 3,4-dimethyl-1,2-phenylenediamine (680 mg, 5.0 mmol) and chloroacetic acid (940 mg, 10 mmol) were refluxed in 4N HCl (10 mL) for 16 hours to give, after work-up and chromatography, 4,5-dimethyl-2-chloromethylbenzimidazole (760 mg, 78%) as a beige powder: 1H NMR (CDCl3) 2.39 (s, 3H), 2.49 (s, 3H), 4.81 (s, 2H), 7.09 (d, 1H, J=8.1 Hz), 7.35 (d, 1H, J=8.1 Hz), 7.49 (br s, 1H).
A solution of 4,5-dimethyl-2-chloromethylbenzimidazole (146 mg, 0.75 mmol), N-(tert-butoxycarbonyl)-N-(2-pyridinylmethyl)-N′-(5,6,7,8-tetrahydro-8-quinolinyl)-1,4-benzenedimethanamine (458 mg, 1.0 mmol) and diisopropylethylamine (0.26 mL, 1.5 mmol) were stirred at 70° C. in DMF (8 mL) for 36 hours to yield, after work-up and chromatography, the desired N-(tert-butoxycarbonyl)-N-(2-pyridinylmethyl)-N′-(4,5-dimethyl-1-H-benzimidazol-2-ylmethyl)-N′-(5,6,7,8-tetrahydro-8-quinolinyl)-1,4-benzenedimethanamine as a pale yellow foam (236 mg, 51%). 1H NMR (CDCl3) 1.37 (s, 9H), 1.77 (m, 2H), 2.00 (m, 2H), 2.24 (m, 1H), 2.24 (s, 3H), 2.54 (s, 3H), 2.67 (m, 1H), 3.67 (s, 2H), 3.88 (d, 1H, J=8.1 Hz), 4.05 (m, 1H), 4.15 (d, 1H, J=8.1 Hz), 4.33–4.46 (m, 4H), 6.95–7.05 (m, 6H), 7.29–7.38 (m, 5H), 8.66 (d, 1H, J=4.8 Hz), 8.77 (d, 1H, J=5.1 Hz).
Using general procedure D: the foam from above was converted to the hydrobromide salt with simultaneous deprotection of the BOC group to provide AMD9365 (201 mg) as a beige solid. 1H NMR (D2O) . 1.89 (m, 1H), 2.20 (s, 3H), 2.30 s (s, 3H), 2.26–2.39 (m, 3H), 3.02 (m, 2H), 3.69 (s, 2H), 3.75 (d, 1H, J=6.9 Hz), 3.80 (d, 1H, J=6.9 Hz), 3.99 (s, 2H), 4.40 (d, 1H, J=16.2 Hz), 4.58 (d, 1H, J=16.2 Hz), 4.75 (m, 1H), 7.00 (d, 2H, J=8.1 Hz), 7.12–7.26 (m, 4H), 7.36 (m, 1H), 7.55 (dd, 1H, J=7.8, 5.6 Hz), 7.93 (dd, 1H, J=5.7, 4.8 Hz), 8.03 (m, 1H), 8.40 (d, 1H, J=8.1 Hz), 8.73 (d, 1H, J=4.1 Hz), 8.74 (d, 1H, J=4.6 Hz). 13C NMR (D2O) □. 13.28, 18.87, 20.46, 20.85, 27.86, 47.35, 50.15, 50.64, 58.85, 63.35, 110.60, 122.31, 126.15, 127.86, 128.06, 128.50, 127.78, 129.34, 130.07 (2C), 130.78 (2C), 133.15, 135.09, 138.52, 139.65, 141.04, 144.73, 145.78, 146.67, 148.27, 150.62, 150.78. ES-MS m/z 517 (M+H). Anal. Calcd. for C33H36N6.4.2HBr.3.2H2O: C, 43.36; H, 5.14; N, 9.19; Br, 36.71. Found: C, 43.40; H, 5.03; N, 8.87; Br, 36.71.
EXAMPLE: 5




AMD9344: Preparation of N-(2-pyridinylmethyl)-N′-(4-trifluoromethyl-1-H-benzimidazol-2-ylmethyl)-N′-(5,6,7,8-tetrahydro-8-quinolinyl)-1,4-benzenedimethanamine (hydrobromide salt)
3-nitrobenzotrifluoride (1.91 g, 10 mmol) and O-methylhydroxylamine hydrochloride (1.04 g, 12.5 mmol) were reacted in the presence of copper (I) chloride (200 mg, 2 mmol) and potassium t-butoxide (3.36 g, 30 mmol) in DMF (25 mL) to yield, after work-up and chromatography, 2-amino-3-trifluoromethylnitrobenzene (330 mg, 16%) as an orange powder: 1H NMR (CDCl3) 7.37 (t, 1H, J=8.1 Hz), 7.97 (d, 1H, J=8.1 Hz), 8.41 (d, 1H, J=8.1 Hz), 8.75 (br s, 2H).
2-amino-3-trifluoromethylnitrobenzene (330 mg, 1.60 mmol) was hydrogenated (1 atmosphere H2) in methanol (20 mL) in the presence of 10% palladium on carbon (30 mg) to yield, after work-up, 3-trifluoromethyl-1,2-phenylenediamine (282 mg, 100%): 1H NMR (CDCl3) 3.38 (br s, 4H), 6.35–6.73 (m, 3H).
A mixture of 3-trifluoromethyl-1,2-phenylenediamine (282 mg, 1.60 mmol) and chloroacetic acid (450 mg, 4.8 mmol) were refluxed in 4N HCl (8 mL) for 16 hours to give, after work-up and chromatography, 4-trifluoromethyl-2-chloromethylbenzimidazole (145 mg, 48%) as a purple powder: 1H NMR (CDCl3) 4.88 (s, 2H), 7.37 (t, 1H, J=7.8 Hz), 7.55 (d, 1H, J=7.8 Hz), 7.84 (d, 1H, J=7.8 Hz).
A solution of 4-trifluoromethyl-2-chloromethylbenzimidazole (145 mg, 0.78 mmol), N-(tert-butoxycarbonyl)-N-(2-pyridinylmethyl)-N′-(5,6,7,8-tetrahydro-8-quinolinyl)-1,4-benzenedimethanamine (440 mg, 0.96 mmol) and diisopropylethylamine (0.21 mL, 1.17 mmol) were stirred at 80° C. in DMF (8 mL) for 16 hours to yield, after work-up and chromatography, the desired N-(tert-butoxycarbonyl)-N-(2-pyridinylmethyl)-N′-(4-trifluoromethyl-1-H-benzimidazol-2-ylmethyl)-N′-(5,6,7,8-tetrahydro-8-quinolinyl)-1,4-benzenedimethanamine as a pale yellow foam (81 mg, 16%).
Using general procedure D: the foam from above was converted to the hydrobromide salt with simultaneous deprotection of the BOC group to provide AMD9344 (77 mg) as a beige solid. 1H NMR (D2O) 1.90 (m, 1H), 2.20–2.35 (m, 2H), 2.43 (m, 1H), 3.03 (m, 2H), 3.73 (s, 2H), 3.78 (d, 1H, J=13.5 Hz), 3.85 (d, 1H, J=13.5 Hz), 4.06 (s, 2H), 4.50 (d, 1H, J=16.5 Hz), 4.67 (d, 1H, J=16.5 Hz), 4.70 (m, 1H), 7.00 (d, 2H, J=7.5 Hz), 7.21 (d, 2H, J=7.5 Hz), 7.42 (d, 1H, J=7.5 Hz), 7.53 (t, 2H, J=7.8 Hz), 7.92 (d, 1H, J=7.2 Hz), 7.97 (d, 1H, J=7.2 Hz), 8.40 (d, 1H, J=8.1 Hz), 8.58 (d, 1H, J=4.8 Hz), 8.75 (d, 1H, J=5.7 Hz). 13C NMR (D2O) □. 14.53, 20.93, 27.86, 30.68, 48.93, 50.27, 55.65, 63.33, 114.3 (m), 118.51, 124.41, 126.16, 126.28, 126.43, 126.60, 129.94, 130.21 (2C), 130.95 (2C), 131.77, 138.22, 139.67, 141.07, 142.83, 147.19, 147.98, 148.29, 150.70, 154.05. ES-MS m/z 557 (M+H). Anal. Calcd. for C32H31N6F3.4.3HBr.1.5H2O.1.25HOAc: C, 42.18; H, 4.41; N, 8.55; Br, 32.54. Found: C, 42.13; H, 4.38; N, 8.50; Br, 32.62.
EXAMPLE: 6




AMD9419: Preparation of N-(2-pyridinylmethyl)-N′-(5-carboxymethyl-1-H-benzimidazol-2-ylmethyl)-N′-(5,6,7,8-tetrahydro-8-quinolinyl)-1,4-benzenedimethanamine (hydrobromide salt)
A mixture of 4-carboxymethyl-1,2-phenylenediamine (833 mg, 5.0 mmol) and chloroacetic acid (940 mg, 10 mmol) were refluxed in 0.5N HCl (10 mL) for 16 hours to give, after work-up and chromatography, 5-carboxymethyl-2-chloromethylbenzimidazole (224 mg, 20%) as a beige powder: 1H NMR (CDCl3) .4.87 (s, 2H), 6.68 (d, 1H, J=7.1 Hz), 8.00 (d, 1H, J=7.1 Hz), 8.34 (s, 1H).
A solution of 5-carboxymethyl-2-chloromethylbenzimidazole (224 mg, 1.0 mmol), N-(tert-butoxycarbonyl)-N-(2-pyridinylmethyl)-N′-(5,6,7,8-tetrahydro-8-quinolinyl)-1,4-benzenedimethanamine (458 mg, 1.0 mmol) and diisopropylethylamine (0.26 mL, 1.5 mmol) were stirred at 70° C. in DMF (8 mL) for 16 hours to yield, after work-up and chromatography, the desired N-(tert-butoxycarbonyl)-N-(2-pyridinylmethyl)-N′-(5-carboxymethyl-1-H-benzimidazol-2-ylmethyl)-N′-(5,6,7,8-tetrahydro-8-quinolinyl)-1,4-benzenedimethanamine as a pale yellow foam (116 mg, 22%). 1H NMR (CDCl3) 1.40 (s, 9H), 1.77 (m, 1H), 2.04 (m, 2H), 2.22 (m, 1H), 2.75–2.90 (m, 2H), 3.71 (s, 2H), 3.88 (s, 2H), 3.88 (s, 3H), 3.93 (m, 2H), 3.98 (d, 1H, J=7.8 Hz), 4.01 (m, 1H), 4.19 (d, 1H, J=7.8 Hz), 7.21 (dd, 1H, J=5.8, 4.7 Hz), 7.21 (d, 2H, J=7.8 Hz), 7.33 (d, 2H, J=7.8 Hz), 7.45 (d, 1H, J=8.1 Hz), 7.57 (m, 2H), 7.90 (d, 1H, J=8.1 Hz), 8.55 (d, 1H, J=4.8 Hz), 8.71 (d, 1H, J=4.8 Hz).
Using general procedure D: the foam from above was converted to the hydrobromide salt with simultaneous deprotection of the BOC group to provide AMD9419 (38 mg) as a beige solid. 1H NMR (D2O) .1.91 (m, 1H), 2.30 (m, 2H), 2.43 (m, 1H), 3.04 (m, 2H), 3.74 (s, 2H), 3.78 (s, 2H), 3.88 (s, 3H), 4.51 (d, 1H, J=16.8 Hz), 4.69 (d, 1H, J=16.8 Hz), 4.71 (m, 1H), 7.07 (d, 2H, J=8.1 Hz), 7.27 (d, 2H, J=8.1 Hz), 7.40 (m, 1H), 7.64 (d, 1H, J=9.0 Hz), 7.94 (m, 3H), 8.19 (s, 1H), 8.40 (d, 1H, J=8.1 Hz), 8.61 (d, 1H, J=4.8 Hz), 8.78 (d, 1H, J=5.8 Hz). 13C NMR (D2O). 20.42, 21.00, 27.84, 48.91, 50.16, 50.40, 53.30, 56.66, 63.38, 114.21, 116.01, 126.05, 126.23, 127.51, 127.95, 130.22 (2C), 130.49, 131.07, 133.70, 135.33, 138.19, 139.70, 141.09, 142.23, 146.21, 147.72, 148.36, 150.67, 151.69, 154.78, 168.21. ES-MS m/z 547 (M+H). Anal. Calcd. for C33H34N6O2.4.2HBr.2.1H2O.1.2HOAc: C, 42.67; H, 4.77; N, 8.43; Br, 33.68. Found: C, 42.57; H, 4.93; N, 8.39; Br, 33.86.
EXAMPLE: 7




AMD9420: Preparation of N-(2-pyridinylmethyl)-N′-(4-hydroxy-1-H-benzimidazol-2-ylmethyl)-N′-(5,6,7,8-tetrahydro-8-quinolinyl)-1,4-benzenedimethanamine (hydrobromide salt)
A mixture of 3-hydroxy-1,2-phenylenediamine (620 mg, 5.0 mmol) and chloroacetic acid (2.35 g, 25 mmol) were refluxed in 0.5N HCl (10 mL) for 16 hours to give, after work-up and chromatography, 4-hydroxy-2-chloromethylbenzimidazole (120 mg, 13%) as a beige powder: 1H NMR (CD3OD) □ 4.82 (s, 2H), 6.76 (d, 1H, J=7.8 Hz), 6.99 (d, 1H, J=7.8 Hz), 7.15 (t, 1H, J=7.8 Hz).
A solution of 4-hydroxy-2-chloromethylbenzimidazole (120 mg, 0.65 mmol), N-(tert-butoxycarbonyl)-N-(2-pyridinylmethyl)-N′-(5,6,7,8-tetrahydro-8-quinolinyl)-1,4-benzenedimethanamine (443 mg, 0.97 mmol) and diisopropylethylamine (0.26 mL, 1.5 mmol) were stirred at 70° C. in DMF (8 mL) for 16 hours to yield, after work-up and chromatography, the desired N-(tert-butoxycarbonyl)-N-(2-pyridinylmethyl)-N′-(5-carboxymethyl-1-H-benzimidazol-2-ylmethyl)-N′-(5,6,7,8-tetrahydro-8-quinolinyl)-1,4-benzenedimethanamine as a viscous yellow oil (108 mg, 28%). 1H NMR (CDCl3) 1.40 (s, 9H), 1.64 (m, 1H), 2.00 (m, 3H), 2.22 (m, 2H), 3.61–3.77 (m, 4H), 3.85–3.91 (m, 3H), 3.91–4.40 (m, 4H), 6.99 (br s, 1H), 7.02 (d, 2H, J=7.8 Hz), 7.13 (d, 2H, J=7.8 Hz), 7.21–7.48 (m, 7H), 8.40 (br s, 1H), 8.55 (d, 1H, J=4.8 Hz), 8.67 (d, 1H, J=5.1 Hz).
Using general procedure D: the foam from above was converted to the hydrobromide salt with simultaneous deprotection of the BOC group to provide AMD9420 (69 mg) as a beige solid. 1H NMR (D2O) 1.85 (m, 1H), 2.19 (m, 2H), 2.42 (m, 2H), 3.02 (m, 2H), 3.86 (m, 4H), 4.08 (s, 2H), 4.41 (d, 1H, J=16.5 Hz), 4.61 (d, 1H, J=16.5 Hz), 4.71 (m, 1H), 6.72 (d, 1H, J=8.1 Hz), 7.01 (d, 1H, J=8.7 Hz), 7.05 (d, 2H, J=7.8 Hz), 7.15 (t, 1H, J=8.1 Hz), 7.22 (d, 2H, J=7.8 Hz), 7.49 (d, 1H, J=8.1 Hz), 7.60 (dd, 1H, J=7.8, 5.1 Hz), 7.91 (dd, 1H, J=6.8, 4.7 Hz), 8.03 (t, 1H, J=7.8 Hz), 8.39 (d, 1H, J=7.8 Hz), 8.61 (d, 1H, J=5.1 Hz), 8.74 (d, 1H, J=5.7 Hz). 13C NMR (D2O) □ 20.43, 20.84, 27.86, 40.09, 50.13, 60.62, 57.73, 63.24, 105.11, 110.87, 121.31, 126.12, 127.21, 127.71, 129.93, 130.19 (2C), 130.83 (2C), 132.35, 134.45, 138.33, 138.39, 139.69, 141.01, 144.57, 145.03, 145.89, 148.26, 150.84. ES-MS m/z 505 (M+H). Anal. Calcd. for C31H32N6O.4.1HBr.4.8H2O: C, 40.35; H, 4.99; N, 9.11; Br, 35.50. Found: C, 40.54; H, 4.91; N, 8.81; Br, 35.30.
EXAMPLE: 8




AMD8938: Preparation of N-(2-pyridinylmethyl)-N′-(benzoxazol-2-ylmethyl)-N′-(5,6,7,8-tetrahydro-8-quinolinyl)-1,4-benzenedimethanamine (hydrobromide salt)
A mixture of 2-aminophenol (545 mg, 5.0 mmol) and chloroacetic acid (940 mg, 10 mmol) were heated to 120° C. for 3 hours in polyphosphoric acid (5 mL) to give, after work-up and chromatography, 2-chloromethylbenzoxazole (260 mg, 31%) as pale yellow crystals. 1H NMR (CDCl3) 4.75 (s), 7.34 (m, 2H), 7.54 (m, 1H), 7.73 (m, 1H). 13C NMR (CDCl3) 36.79, 111.30, 129.95, 125.23, 126.38, 141.22, 151.54, 161.21.
A solution of 2-chloromethylbenzoxazole (182 mg, 1.09 mmol), N-(tert-butoxycarbonyl)-N-(2-pyridinylmethyl)-N′-(5,6,7,8-tetrahydro-8-quinolinyl)-1,4-benzenedimethanamine (400 mg, 0.873 mmol) and diisopropylethylamine (0.225 mL, 1.3 mmol) were stirred at 80° C. in DMF (8 mL) for 16 hours to yield, after work-up and chromatography, the desired N-(tert-butoxycarbonyl)-N-(2-pyridinylmethyl)-N′-(benzoxazol-2-ylmethyl)-N′-(5,6,7,8-tetrahydro-8-quinolinyl)-1,4-benzenedimethanamine as a viscous yellow oil (230 mg, 45%). 1H NMR (CDCl3) 1.40 (s), 1.47 (s, total of 9H), 1.47 (m, 1H), 2.00–2.09 (m, 3H), 2.68–2.77 (m, 2H), 3.88 (d, 1H, J=12.4 Hz), 4.01–4.06 (m, 2H), 4.15 (dd, 1H, J=6.4, 5.1 Hz), 4.24 (d, 1H, J=12.4 Hz), 4.33–4.49 (m, 4H), 7.04 (m, 1H), 7.08–7.28 (m, 7H), 7.39 (d, 2H, J=7.8 Hz), 7.47 (m, 1H), 7.59 (m, 2H), 8.39 (d, 1H, J=5.4 Hz), 8.55 (d, 1H, J=4.9 Hz).
Using general procedure D: the viscous oil from above was converted to the hydrobromide salt with simultaneous deprotection of the BOC group to provide AMD8938 (220 mg) as a beige solid. 1H NMR (D2O) 1.13 (m, 1H), 2.03 (m, 2H), 2.11 (m, 1H), 2.91 (br s, 2H), 3.92–3.97 (m, 4H), 4.04 (s, 2H), 4.58–4.72 (m, 3H), 7.22 (d, 2H, J=7.8 Hz), 7.33 (m, 2H), 7.45 (d, 2H, J=7.8 Hz), 7.46–7.50 (m, 2H), 7.63 (t, 1H, J=6.8 Hz), 7.91 (m, 1H), 8.13 (d, 1H, J=8.1 Hz), 8.41 (m, 1H), 8.51 (d, 1H, J=5.7 Hz), 8.75 (d, 1H, J=4.8 Hz). 13C NMR (D2O) □ 21.01, 27.43, 47.30, 49.34, 51.78, 53.36, 55.19, 60.33, 116.85, 121.00, 124.54, 125.51, 125.67, 128.23, 128.75, 129.86, 129.97 (2C), 130.91 (2C), 131.08, 131.49, 138.33, 140.14, 143.95, 145.12, 145.30, 146.38, 147.63, 150.26, 171.28. ES-MS m/z 491 (M+H). Anal. Calcd. for C31H31N5O.4HBr.1H2O.1HOAc: C, 44.47; H, 4.64; N, 7.86; Br, 35.86. Found: C, 44.63; H, 4.77; N, 7.87; Br, 35.63.
EXAMPLE: 9




AMD8971: Preparation of N-(2-pyridinylmethyl)-N′-(5-benzoyl-1H-benzimidazol-2-ylmethyl)-N′-(5,6,7,8-tetrahydro-8-quinolinyl)-1,4-benzenedimethanamine (hydrobromide salt)
A mixture of 4-diaminobenzophenone (2.26 g, 0.0106 mol) and chloroacetic acid (2.05 g, 0.022 mol) in 4 M HCl was stirred at reflux for 16 hours. The mixture was cooled to room temperature and diluted with saturated aqueous Na2CO3 (60 mL, pH□□) and ethyl acetate (60 mL). The phases were separated and the aqueous phase was extracted with ethyl acetate (2×50 mL). The combined organic extracts were dried (Na2SO4), filtered and concentrated to afford 5-benzoyl-2-chloromethylbenzimidazole (1.58 g) as an orange solid. 1H NMR (CDCl3) 4.88 (s, 2H), 7.46–7.51 (m, 2H), 7.57–7.62 (m, 2H), 7.80–7.85 (m, 3H), 8.08 (br s, 1H).
A solution of 5-benzoyl-2-chloromethylbenzimidazole (284 mg, 1.05 mmol), N-(tert-butoxycarbonyl)-N-(2-pyridinylmethyl)-N′-(5,6,7,8-tetrahydro-8-quinolinyl)-1,4-benzenedimethanamine (476 mg, 1.04 mmol) and N,N-diisopropylethylamine (0.36 mL, 2.08 mmol) were stirred at 80□ C in DMF (4 mL) for 16 hours. The reaction was then cooled, concentrated under reduced pressure and diluted with CH2Cl2 (35 mL) and saturated aqueous NaHCO3 (40 mL). The phases were separated and the aqueous phase was washed with CH2Cl2 (2×25 mL). The combined organic extracts were washed with saturated aqueous NaHCO3 (1×40 mL), dried (NaSO4), filtered and concentrated under reduced pressure. Purification of the resultant oil by flash chromatography on silica gel (96:4 CH2Cl2/MeOH) provided the desired alkylated product (468 mg, 65%) as an orange oil.
Using General Procedure D: Conversion of the oil from above (37 mg, 0.063 mmol) to the hydrobromide salt with simultaneous deprotection of the BOC group followed by re-precipitation of the intermediate solid from methanol/ether gave AMD8971 (63 mg, 94%) as a beige solid. 1H NMR (D2O) 1.80–1.96 (m, 1H), 2.19–2.31 (m, 2H), 2.41–2.46 (m, 1H), 3.01–3.04 (m, 2H), 3.77 (s, 2H), 3.79 (d, 1H, J=12.9 Hz), 3.87 (d, 1H, J=12.9 Hz), 4.12 (s, 2H), 4.50 (d, 1H, J=16.8 Hz), 4.69 (d, 1H, J=16.8 Hz), 4.78–4.80 (m, 1H, overlap with HOD), 7.06 (d, 2H, J=8.1 Hz), 7.24 (d, 2H, J=8.1 Hz), 7.52–7.62 (m, 4H), 7.65–7.77 (m, 5H), 7.90–7.94 (m, 2H), 8.07 (td, 1H, J=7.8, 1.2 Hz), 8.39 (d, 1H, J=7.8 Hz), 8.57 (d, 1H, J=4.8 Hz), 8.76 (d, 1H, J=5.3 Hz); 13C NMR (D2O) □ 20.44, 21.01, 27.85, 48.96, 50.22, 50.42, 56.70, 63.37, 114.17, 116.73, 126.21 (2 carbons), 126.32, 128.48, 129.16 (2 carbons), 130.06, 130.21 (2 carbons), 130.26, 130.81 (2 carbons), 131.06 (2 carbons), 133.48, 134.40, 135.16, 136.48, 138.23, 139.71, 141.09, 142.50, 147.43, 147.96, 148.37, 150.67, 154.81, 199.02. ES-MS m/z 593 (M+H). Anal. Calcd. for C38H36N6O.4.0HBr.2.0H2O: C, 47.92; H, 4.66; N, 8.82; Br, 33.56. Found: C, 47.98; H, 4.58; N, 8.55; Br, 33.45.
EXAMPLE: 10




AMD8932: Preparation of N-(2-pyridinylmethyl)-N′-[(1H)-4-azabenzimidazol-2-ylmethyl]-N′-(5,6,7,8-tetrahydro-8-quinolinyl)-1,4-benzenedimethanamine (hydrobromide salt)
Using General Procedure B: Reaction of 1-[[2-(trimethylsilyl)ethoxy]methyl]-(1H)-4-azabenzimidazole-2-carboxaldehyde (prepared as described by Whitten, J. P.; Matthews, D. P.; McCarthy, J. R. J. Org. Chem. 1986, 51, 1891–1894.) (0.206 g, 0.74 mmol) and N-(tert-Butoxycarbonyl)-N-(2-pyridinylmethyl)-N′-(5,6,7,8-tetrahydro-8-quinolinyl)-1,4-benzenedimethanamine (0.427 g, 0.93 mmol) with NaBH(OAc)3 (0.400 g, 1.89 mmol) in CH2Cl2 (7.5 mL) for 19 hours followed by purification of the crude material by radial chromatography on silica gel (2 mm plate, 40:1:1 CH2Cl2-MeOH—NH4OH) provided 0.570 g of a yellow oil. The oil was dissolved in CH2Cl2 (4 mL) and treated with trifluoroacetic acid (2 mL). The resultant solution was stirred at room temperature for 19 hours then concentrated under reduced pressure. The residue was dissolved in CH2Cl2 (20 mL) and treated with aqueous NaOH (10 M,  ̃20 mL) until the aqueous phase was basic (pH 14). The phases were separated and the aqueous phase was extracted with CH2Cl2 (3×20 mL). The combined organic extracts were dried (Na2SO4), and concentrated. Purification of the crude material by radial chromatography on silica gel (2 mm plate, 30:1:1 CH2Cl2-MeOH—NH4OH) provided 0.100 g (28%) of the free base of the title compound as an off-white solid.
Using general procedure D: Conversion of the off-white solid (0.100 g) to the hydrobromide salt, followed by re-precipitation of the intermediate solid from methanol/ether, gave AMD8932 (0.151 g) as a white solid. 1H NMR (D2O) □ 1.76–1.90 (m, 1H), 2.16–2.27 (m, 2H), 2.38–2.44 (m, 1H), 2.96–2.99 (m, 2H), 3.85 (s, 2H), 4.01 (s, 2H), 4.35 (d, 1H, J=16.2 Hz), 4.36 (s, 2H), 4.52 (d, 1H, J=16.2 Hz), 4.65 (dd, 1H, J=6.3, 7.5 Hz), 7.11 (d, 2H, J=8.1 Hz), 7.28 (d, 2H, J=7.8 Hz), 7.63 (dd, 1H, J=5.7, 8.1 Hz), 7.73–7.77 (m, 2H), 7.83 (dd, 1H, J=7.8, 6.0 Hz), 8.24 (ddd, 1H, J=7.8, 7.8, 1.5 Hz), 8.30 (d, 1H, J=7.8 Hz), 8.37 (d, 1H, J=8.1 Hz), 8.46 (d, 1H, J=4.8 Hz), 8.67 (d, 2H, J=5.7 Hz); 13C NMR (D2O) □ 20.49, 20.64, 27.76, 48.63, 50.81, 51.32, 56.21, 61.94, 120.15, 125.85, 126.75, 126.77, 128.44, 129.16, 129.79, 130.20 (2 carbons), 131.03 (2 carbons), 138.63, 138.88, 139.43, 140.71, 143.90, 145.94, 146.45, 147.45, 147.88, 151.34, 160.34; ES-MS m/z 490 (M+H). Anal. Calcd. for C30H31N7.4.4HBr.2.0H2O: C, 40.87; H, 4.50; N, 11.12; Br, 39.88. Found: C, 40.79; H, 4.51; N, 11.00; Br, 39.95.
EXAMPLE: 11




AMD8933: Preparation of N-(2-pyridinylmethyl)-N′-[5-chloro-1H-benzimidazol-2-ylmethyl]-N′-(5,6,7,8-tetrahydro-8-quinolinyl)-1,4-benzenedimethanamine (hydrobromide salt)
General procedures for the protection of benzimidazoles with SEM-Cl and subsequent formylation with DMF are described in Bridger et al. PCT International application PCT/CA00/00321.
1-[[2-(trimethylsilyl)ethoxy]methyl]-5-chloro-1H-benzimidazole-2-carboxaldehyde.
A solution of 5-chloro-1H-benzimidazole (0.345 g, 2.26 mmol) in dry DMF (11 mL) was treated with N,N-diisopropylethylamine (0.60 mL, 3.44 mmol) and 2-(trimethylsilyl)ethoxymethyl chloride (0.50 mL, 2.83 mmol). The resultant solution was heated to 80° C. for 75 minutes. After aqueous work-up, 0.631 g of an orange oil was isolated and was used without further purification. A cold (−40° C.) solution of the oil (0.631 g) in dry THF (22 mL) was treated with tert-butyllithium (1.7 M in pentane, 2.00 mL). The solution turned deep red. After 20 minutes, DMF (0.50 mL, 6.46 mmol) was added to the reaction mixture and the resultant solution was allowed to warm to room temperature overnight. Aqueous work-up followed by purification of the crude material by column chromatography on silica gel (25:1 CH2Cl2-MeOH) gave 0.470 g (67%) of 1-[[2-(trimethylsilyl)ethoxy]methyl]-5-chloro-1H-benzimidazole-2-carboxaldehyde as a yellow oil. 1H NMR analysis of this material indicated a 1:1 mixture of regioisomers. 1H NMR (CDCl3) □ 0.08–0.02 (m, 9H), 0.86–0.93 (m, 2H), 3.51–3.58 (m, 2H), 6.00 & 6.02 (s, s, 2H total), 7.40–7.48 (m, 2H), 7.58–7.66 (m, 1H), 7.84–7.93 (m, 1H), 10.09 & 10.10 (s, s, 1H total).
Using General Procedure B: Reaction of 1-[[2-(trimethylsilyl)ethoxy]methyl]-5-chloro-1H-benzimidazole-2-carboxaldehyde (0.448 g, 1.44 mmol) and N-(2-nitrobenzenesulfonyl)-N-(2-pyridinylmethyl)-N′-(5,6,7,8-tetrahydro-8-quinolinyl)-1,4-benzenedimethanamine (0.425 g, 0.78 mmol) with NaBH(OAc)3 (0.515 g, 2.43 mmol) in CH2Cl2 (7.5 mL) for 21 hours followed by purification of the crude material by column chromatography on silica gel (20:1:1 CH2Cl2-MeOH containing 2% NH4OH) provided 0.500 g of a yellow solid.
Using general procedure C: the yellow solid from above (0.500 g) was treated with thiophenol (0.37 mL, 3.60 mmol) and K2CO3 (0.911 g, 6.59 mmol) in CH3CN (12 mL). Purification of the crude material by column chromatography on silica gel (20:1 CH2Cl2-MeOH followed by 20:1:1 CH2Cl2-MeOH—NH4OH) provided 0.322 g of the desired product as an off-white foam.
Using general procedure D: the foam from above (0.322 g) was dissolved in glacial acetic acid (4 mL) and treated with HBr saturated acetic acid (5 mL). The resultant hydrobromide salt was collected and partitioned between CH2Cl2 (20 mL) and 10 N NaOH (5 mL). The aqueous phase was extracted with CH2Cl2 (3×10 mL) and the combined organic layers were dried (Na2SO4), filtered and concentrated under reduced pressure to give the crude free amine as a white solid. Purification of the crude amine by radial chromatography on silica gel (2 mm plate 40:1:1 CH2Cl2-MeOH—NH4OH) gave 0.113 g (28%) the free base of the title compound as a white solid.
Using general procedure D: Conversion of the free base (0.113 g) to the hydrobromide salt, followed by re-precipitation of the intermediate solid from methanol/ether, gave AMD8933 (0.160 g) as a white solid. 1H NMR (D2O) □ 1.70–1.96 (m, 1H), 2.18–2.30 (m, 2H), 2.40–2.45 (m, 1H), 3.02 (br s, 2H), 3.76–3.89 (m, 4H), 4.17 (s, 2H), 4.44 (d, 1H, J=16.5 Hz), 4.62 (d, 1H, J=16.5 Hz), 4.73–4.79 (m, 1H, overlaps with HOD), 7.06 (d, 2H, J=7.8 Hz), 7.21 (d, 2H, J=7.8 Hz), 7.38 (dd, 1H, J=1.5, 8.7 Hz), 7.51 (d, 1H, J=8.7 Hz), 7.61–7.71 (m, 2H), 7.91 (dd, 1H, J=7.8, 6.0 Hz), 8.15 (ddd, 1H, J=8.1, 7.8, 1.2 Hz), 8.39 (d, 1H, J=7.8 Hz), 8.66 (d, 1H, J=5.1 Hz), 8.67 (d, 2H, J=5.7 Hz); 13C NMR (D2O) □ 20.43, 20.97, 27.84, 49.13, 50.28 (2 carbons), 56.68, 63.31, 113.92, 115.22, 126.21, 126.27, 126.33, 127.25, 129.29, 130.03, 130.22 (2 carbons), 130.94 (2 carbons), 131.20, 131.88, 138.21, 139.68, 141.06, 142.46, 147.61, 148.19, 148.33, 150.71, 153.08; ES-MS m/z 523 (M+H). Anal. Calcd. for C31H31N6Cl.4.0HBr.1.6H2O: C, 42.53; H, 4.40; N, 9.60; Cl, 4.05; Br, 36.50. Found: C, 42.46; H, 4.38; N, 9.32; Cl, 4.08; Br, 36.77.
EXAMPLE: 12




AMD8968: Preparation of N-(2-pyridinylmethyl)-N′-[5-methoxy-1H-benzimidazol-2-ylmethyl]-N′-(5,6,7,8-tetrahydro-8-quinolinyl)-1,4-benzenedimethanamine (free base)
A mixture of 4-methoxy-1,2-phenylenediamine dihydrochloride (1.125 g, 5.33 mmol) and chloroacetic acetic (1.006 g, 10.65 mmol) in 4 N HCl (5 mL) was heated to reflux for 22 hours. Following aqueous work-up, 0.90 g of an orange solid was isolated which was used without further purification.
A solution of 2-chloromethyl-5-methoxy-1H-benzimidazole (0.202 g, 1.03 mmol), N-(2-nitrobenzenesulfonyl)-N-(2-pyridinylmethyl)-N′-(5,6,7,8-tetrahydro-8-quinolinyl)-1,4-benzenedimethanamine (0.558 g, 1.03 mmol) and N,N-diisopropylethylamine (0.60 mL, 3.44 mmol) in DMF (10 mL) was heated to 80° C. for 20 hours. The mixture was concentrated and the residue was partitioned between CH2Cl2 (30 mL) and brine (10 mL). The phases were separated and the aqueous phase was extracted with CH2Cl2 (2×10 mL). The combined organic extracts were dried (Na2SO4) and concentrated. The crude material was purified by column chromatography on silica gel (25:1:1 CH2Cl2—CH3OH—NH4OH) to provide the desired tertiary amine (0.315 g) as a yellow oil.
Using general procedure C: the yellow oil was treated with thiophenol (0.30 mL, 2.92 mmol) and K2CO3 (0.638 g, 4.61 mmol) in CH3CN (9 mL). Purification of the crude material by column chromatography on silica gel (20:1:1 CH2Cl2—CH3OH—NH4OH) followed by radial chromatography on silica gel (2 mm plate, 50:1:1 CH2Cl2—CH3OH—NH4OH) provided 0.123 g (23%) of the title compound AMD8968 as a yellow oil. 1H NMR (CDCl3) □ 1.61–1.74 (m, 1H), 1.96–2.29 (m, 3H), 2.71 (dt, 1H, J=16.5, 7.5 Hz), 2.85 (ddd, 1H, J=16.5, 10.5, 4.8 Hz), 3.72 (s, 2H), 3.75 (s, 2H), 3.84–3.95 (m, 6H), 4.04–4.14 (m, 2H), 6.83 (br s, 1H), 7.01 (br s, 1H), 7.10–7.28 (m, 5H), 7.34–7.43 (m, 3H), 7.51 (br d, 1H, J=8.4 Hz), 7.59 (td, 1H, J=7.5, 1.8 Hz), 8.52 (d, 1H, J=4.8 Hz), 8.68 (d, 2H, J=3.9 Hz); 13C NMR (CDCl3) □ 21.38, 23.28, 29.24, 48.47, 53.17, 53.71, 54.45, 55.89, 60.08, 121.87, 122.18, 122.32, 128.21, 128.63, 134.70, 136.37, 137.15, 138.07, 139.01, 146.95, 149.25, 155.67, 155.78, 157.53, 159.74; ES-MS m/z 519 (M+H). Anal. Calcd. for C32H34N6O.0.4CH2Cl2.0.4H2O: C, 69.51; H, 6.41; N, 15.01. Found: C, 69.22; H, 6.43; N, 14.85.
EXAMPLE: 13




AMD9336: Preparation of N-(2-pyridinylmethyl)-N′-[4-methoxy-1H-benzimidazol-2-ylmethyl]-N′-(5,6,7,8-tetrahydro-8-quinolinyl)-1,4-benzenedimethanamine (hydrobromide salt)
2-chloromethyl-4-methoxy-1H-benzimidazole
A suspension of 3-nitroanisole (1.550 g, 10.12 mmol) and O-methylhydroxylamine hydrochloride (1.078 g, 12.91 mmol) in DMF (15 mL) was added to a cold (0° C.) solution of potassium tert-butoxide (5.870 g, 52.30 mmol) and copper(I) chloride (0.200 g, 2.02 mmol) in DMF (35 mL). The cooling bath was removed and the resultant slurry was stirred at room temperature for 6 hours. The reaction mixture was poured into saturated aqueous NH4Cl (50 mL) and the mixture was extracted with CH2Cl2 (4×50 mL). The combined organic extracts were dried (Na2SO4) and concentrated. Purification of the crude material by column chromatography on silica gel (5:1 hexanes-ethyl acetate) followed by radial chromatography on silica gel (2 mm plate, 5:1 hexanes-ethyl acetate) provided 0.860 g (50%) of 2-amino-3-methoxy-nitrobenzene as a red solid. 1H NMR (CDCl3) □ 3.92 (s, 3H), 6.44 (br s, 2H), 6.61 (dd, 1H, J=9.0, 9.0 Hz), 6.88 (d, 1H, J=9.0 Hz), 7.74 (d, 1H, J=9.0 Hz).
A solution of 2-amino-3-methoxy-1-nitrobenzene (0.860 g, 5.11 mmol) in MeOH (50 mL) was hydrogenated (1 atm) over palladium, 10 wt. % on activated carbon (0.163 g). The resultant crude 3-methoxy-1,2-phenylenediamine was reacted with chloroacetic acid (0.953 g, 10.08 mmol) in refluxing 4 N HCl (10 mL) overnight. After aqueous workup, 0.87 g of 2-chloromethyl-4-methoxy-1H-benzimidazole was isolated as a red-brown solid, which was used without further purification.
A solution of the crude 2-chloromethyl-4-methoxy-1H-benzimidazole (0.209 g), N-(2-nitrobenzenesulfonyl)-N-(2-pyridinylmethyl)-N′-(5,6,7,8-tetrahydro-8-quinolinyl)-1,4-benzenedimethanamine (0.588 g, 1.08 mmol) and N,N-diisopropylethylamine (0.56 mL, 3.21 mmol) in DMF (11 mL) was heated to 80° C. for 19 hours. The mixture was concentrated and the residue was partitioned between CH2Cl2 (20 mL) and brine (10 mL). The phases were separated and the aqueous phase was extracted with CH2Cl2 (3×10 mL). The combined organic extracts were dried (Na2SO4) and concentrated. The crude material was purified by column chromatography on silica gel (30:1:1 CH2Cl2—CH3OH—NH4OH) to provide the desired tertiary amine (0.359 g) as a yellow oil.
Using general procedures C and D: the yellow oil was treated with thiophenol (0.37 mL, 3.60 mmol) and K2CO3 (0.742 g, 5.36 mmol) in CH3CN (10 mL). Purification of the crude material by column chromatography on silica gel (20:1:1 CH2Cl2—CH3OH—NH4OH) followed by radial chromatography on silica gel (2 mm plate, 50:1:1 CH2Cl2—CH3OH—NH4OH) provided 0.073 g (13%) of the free base of the title compound as a white solid. Conversion of the free base (0.073 g) to the hydrobromide salt, followed by re-precipitation of the intermediate solid from methanol/ether, gave AMD9336 (0.098 g) as a white solid. 1H NMR (D2O) □ 1.81–1.95 (m, 1H), 2.18–2.27 (m, 2H), 2.41–2.45 (m, 1H), 3.02 (br s, 2H), 3.76–3.87 (m, 4H), 3.94 (s, 3H), 4.12 (s, 2H), 4.41 (d, 1H, J=16.5 Hz), 4.60 (d, 1H, J=16.5 Hz), 4.73–4.78 (m, 1H, overlaps with HOD), 6.87 (d, 1H, J=8.1 Hz), 7.04 (d, 2H, J=7.8 Hz), 7.09 (d, 1H, J=8.1 Hz), 7.20 (d, 2H, J=7.8 Hz), 7.29 (dd, 1H, J=8.1, 8.4 Hz), 7.62 (d, 1H, J=8.1 Hz), 7.69 (dd, 1H, J=6.0, 7.8 Hz), 7.91 (dd, 1H, J=6.0, 7.8 Hz), 8.16 (ddd, 1H, J=7.8, 7.8, 1.5 Hz), 8.38 (d, 1H, J=7.5 Hz), 8.66 (d, 1H, J=5.1 Hz), 8.74 (d, 1H, J=5.7 Hz); 13C NMR (D2O) □ 20.45, 20.93, 27.85, 48.96, 50.17, 50.31, 56.67, 56.75, 63.34, 105.83, 107.01, 121.37, 126.12, 126.24, 126.35, 127.82, 129.92, 130.10 (2 carbons), 130.84 (2 carbons), 131.91, 138.27, 139.68, 141.03, 142.51, 147.22, 147.49, 148.26 (2 carbons), 150.79, 150.88; ES-MS m/z 519 (M+H). Anal. Calcd. for C32H34N6O.4.0HBr.3.0H2O: C, 42.88; H, 4.95; N, 9.38; Br, 35.66. Found: C, 42.94; H, 4.90; N, 9.22; Br, 35.63.
EXAMPLE: 14




AMD9368: Preparation of N-(2-pyridinylmethyl)-N′-[4-phenyl-1H-benzimidazol-2-ylmethyl]-N′-(5,6,7,8-tetrahydro-8-quinolinyl)-1,4-benzenedimethanamine (hydrobromide salt)
2-Chloromethyl-4-phenyl-1H-benzimidazole
A suspension of 2-nitrobiphenyl (2.061 g, 10.34 mmol) and O-methylhydroxylamine hydrochloride (1.088 g, 13.02 mmol) in DMF (15 mL) was added to a cold (0° C.) solution of potassium tert-butoxide (5.993 g, 53.40 mmol) and copper(I) chloride (0.246 g, 2.48 mmol) in DMF (35 mL). The cooling bath was removed and the resultant slurry was stirred at room temperature for 20 hours. The reaction mixture was poured into saturated aqueous NH4Cl (50 mL) and the mixture was extracted with CH2Cl2 (4×50 mL). The combined organic extracts were dried (Na2SO4) and concentrated. Purification of the crude material by column chromatography on silica gel (4:1 hexanes-ethyl acetate followed by 2:1 hexanes-ethyl acetate) provided 0.600 g (27%) 2-amino-6-phenyl-nitrobenzene as a yellow oil. 1H NMR (CDCl3) □ 4.99 (br s, 2H), 6.70 (dd, 1H, J=7.2, 1.2 Hz), 6.80 (dd, 1H, J=8.4, 1.2 Hz), 7.29–7.41 (m, 6H).
A solution of 2-amino-6-phenyl-nitrobenzene (0.600 g, 2.80 mmol) in MeOH (28 mL) was hydrogenated (30 psi) over palladium, 10 wt. % on activated carbon (0.121 g). The resultant crude 3-phenyl-1,2-phenylenediamine was reacted with chloroacetic acid (0.537 g, 5.68 mmol) in refluxing 4 N Hl (6 mL) overnight. After normal workup, 0.63 g (92%) of 2-chloromethyl-4-phenyl-1H-benzimidazole was isolated as a brown solid, which was used without further purification.
A solution of the crude 2-chloromethyl-4-phenyl-1H-benzimidazole (0.249 g), N-(tert-butoxycarbonyl)-N-(2-pyridinylmethyl)-N′-(5,6,7,8-tetrahydro-8-quinolinyl)-1,4-benzenedimethanamine (0.468 g, 1.02 mmol) and N,N-diisopropylethylamine (0.55 mL, 3.15 mmol) in DMF (10 mL) was heated to 80° C. for 17 hours. The mixture was concentrated and the residue was partitioned between CH2Cl2 (30 mL) and brine (10 mL). The phases were separated and the aqueous phase was extracted with CH2Cl2 (3×10 mL). The combined organic extracts were dried (Na2SO4) and concentrated. The crude material was purified by radial chromatography on silica gel (25:1 CH2Cl2—CH3OH containing 2% NH4OH) to provide 0.121 g (20%) of the desired tertiary amine as a yellow solid.
Using general procedure D: Conversion of the yellow solid to the hydrobromide salt with simultaneous removal of the BOC-protecting group, followed by re-precipitation of the intermediate solid from methanol/ether, gave AMD9368 (0.130 g) as a white solid. 1H NMR (D2O) □ 1.81–1.95 (m, 1H), 2.17–2.29 (m, 2H), 2.40–2.45 (m, 1H), 3.01 (br s, 2H), 3.73–3.83 (m, 4H), 4.12 (s, 2H), 4.43 (d, 1H, J=16.5 Hz), 4.63 (d, 1H, J=16.5 Hz), 4.74–4.79 (m, 1H, overlaps with HOD), 6.97 (d, 2H, J=7.8 Hz), 7.15 (d, 2H, J=7.8 Hz), 7.34 (d, 1H, J=6.6 Hz), 7.43–7.68 (m, 9H), 7.91 (dd, 1H, J=6.0, 7.8 Hz), 8.11 (ddd, 1H, J=7.8, 7.8, 1.5 Hz), 8.38 (d, 1H, J=7.8 Hz), 8.61 (d, 1H, J=4.8 Hz), 8.71 (d, 1H, J=5.7 Hz); 13C NMR (D2O) □ 20.43, 20.91, 27.84, 48.97, 50.22, 50, 23, 56.67, 63.44, 112.86, 126.12, 126.28, 126.36, 127.11, 128.79, 129.55, 129.85, 129.97, 130.81, 131.14, 135.71, 138.24, 139.67, 141.07, 142.36, 147.52, 148.24, 148.27, 150.76, 152.38; ES-MS m/z 565 (M+H). Anal. Calcd. for C37H36N6.4.0HBr.2.7H2O: C, 47.43; H, 4.88; N, 8.97; Br, 34.11. Found: C, 47.42; H, 4.89; N, 8.77; Br, 34.08.
EXAMPLE: 15




AMD9387: Preparation of N-(2-pyridinylmethyl)-N′-[4,7-dimethoxy-1H-benzimidazol-2-ylmethyl]-N′-(5,6,7,8-tetrahydro-8-quinolinyl)-1,4-benzenedimethanamine (hydrobromide salt)
3,6-Dimethoxy-1,2-phenylenediamine
A suspension of 2,5-dimethoxynitrobenzene (1.831 g, 10.00 mmol) and O-methylhydroxylamine hydrochloride (1.086 g, 13.01 mmol) in DMF (15 mL) was added to a cold (0° C.) solution of potassium tert-butoxide (5.84 g, 52.04 mmol) and copper(I) chloride (0.198 g, 2.00 mmol) in DMF (35 mL). The cooling bath was removed and the resultant slurry was stirred at room temperature for 23 hours. The reaction mixture was poured into saturated aqueous NH4Cl (50 mL) and the mixture was extracted with CH2Cl2 (4×50 mL). The combined organic extracts were dried (Na2SO4) and concentrated. Purification of the crude material by column chromatography on silica gel (5:1 hexanes-ethyl acetate followed by 3:1 hexanes-ethyl acetate) provided 0.400 g of an orange oil. The oil was dissolved in MeOH (10 mL) and the mixture was hydrogenated (1 atm) over palladium, 10 wt. % on activated carbon (0.088 g). The mixture was vacuum filter through celite and the cake was washed with methanol. The solvent was removed from the filtrate under reduced pressure and the oil thus obtained was purified by column chromatography on silica gel (2:1 hexanes-ethyl acetate) and afforded 0.179 g (11%) of 3,6-dimethoxy-1,2-phenylenediamine as a yellow oil. 1H NMR (CDCl3) □ 3.52 (br s, 4H), 3.81 (s, 6H), 6.31 (s, 2H).
3,6-Dimethoxy-1,2-phenylenediamine was reacted with chloroacetic acid (0.537 g, 5.68 mmol) in refluxing 4 N HCl (6 mL) overnight. After aqueous workup, 0.371 g of an orange solid was isolated and this was used without further purification in the next step. A solution of the crude 2-chloromethyl-4,7-dimethoxy-1H-benzimidazole (0.371 g), N-(tert-butoxycarbonyl)-N-(2-pyridinylmethyl)-N′-(5,6,7,8-tetrahydro-8-quinolinyl)-1,4-benzenedimethanamine (0.460 g, 1.00 mmol) and N,N-diisopropylethylamine (0.55 mL, 3.15 mmol) in DMF (10 mL) was heated to 80° C. for 23 hours. The mixture was concentrated and the residue was partitioned between CH2Cl2 (40 mL) and brine (10 mL). The phases were separated and the aqueous phase was extracted with CH2Cl2 (3×10 mL). The combined organic extracts were dried (Na2SO4) and concentrated. The crude material was purified by column chromatography on silica gel (50:1:1 CH2Cl2—CH3OH—NH4OH) followed by radial chromatography on silica gel (40:1:1 CH2Cl2—CH3OH—NH4OH) to provide 0.092 g (17%) of the desired tertiary amine as a yellow oil.
Using general procedure D: Conversion of the yellow oil to the hydrobromide salt with simultaneous removal of the BOC-protecting group, followed by re-precipitation of the intermediate solid from methanol/ether, gave AMD9387 (0.089 g) as a white solid. 1H NMR (D2O) □ 1.80–1.96 (m, 1H), 2.17–2.29 (m, 2H), 2.38–2.45 (m, 1H), 3.02 (br s, 2H), 3.75–3.82 (m, 4H), 3.88 (s, 6H), 4.06 (s, 2H), 4.38 (d, 1H, J=16.2 Hz), 4.59 (d, 1H, J=16.2 Hz), 4.73–4.79 (m, 1H, overlaps with HOD), 6.77 (s, 2H), 7.02 (d, 2H, J=8.1 Hz), 7.18 (d, 2H, J=8.1 Hz), 7.54 (d, 1H, J=7.8 Hz), 7.62 (dd, 1H, J=5.4, 7.2 Hz), 7.91 (dd, 1H, J=6.0, 7.8 Hz), 8.07 (ddd, 1H, J=7.8, 7.8, 1.5 Hz), 8.38 (d, 1H, J=7.5 Hz), 8.63 (d, 1H, J=4.5 Hz), 8.73 (d, 1H, J=5.1 Hz); 13C NMR (D2O) □ 20.44, 20.90, 27.85, 49.35, 50.11, 56.79, 56.99, 63.45, 107.44, 122.62, 125.77, 125.95, 126.11, 129.90, 129.99, 130.80, 138.27, 139.65, 141.07, 141.37, 148.23, 148.31, 148.91, 150.62, 150.77; ES-MS m/z 549 (M+H). Anal. Calcd. for C33H36N6O2.4.0HBr.3.6H2O: C, 42.29; H, 5.08; N, 8.97; Br, 34.10. Found: C, 42.37; H, 5.03; N, 8.82; Br, 34.06.
EXAMPLE: 16




AMD8969: Preparation of N-(2-pyridinylmethyl)-N′-(benzothiazol-2-ylmethyl)-N′-(5,6,7,8-tetrahydro-8-quinolinyl)-1,4-benzenedimethanamine (hydrobromide salt)
A mixture of 2-aminothiophenol (630 mg, 5.0 mmol) and chloroacetic acid (945 mg, 10 mmol) was stirred in polyphosphoric acid (5 mL) for 2 hours at 120° C. to give, after work-up and chromatography, 2-chloromethylbenzothiazole (260 mg, 28%) as colorless crystals. 1H NMR (CDCl3) δ 4.95 (s, 2H), 7.45 (t, 1H, J=6 Hz), 7.51 (t, 1H, J=6 Hz), 7.90 (d, 1H, J=9 Hz), 8.03 (d, 1H, J=6 Hz).
A solution of 2-chloromethylbenzothiazole (260 mg, 1.4 mmol), N-(tert-butoxycarbonyl)-N-(2-pyridinylmethyl)-N′-(5,6,7,8-tetrahydro-8-quinolinyl)-1,4-benzenedimethanamine (713 mg, 1.56 mmol) and diisopropylethylamine (0.38 mL, 2.1 mmol) were stirred at 80° C. in DMF (12 mL) for 64 hours to yield, after work-up and chromatography, the desired N-(tert-butoxycarbonyl)-N-(2-pyridinylmethyl)-N′-(benzothiazol-2-ylmethyl)-N′-(5,6,7,8-tetrahydro-8-quinolinyl)-1,4-benzenedimethanamine as a pale brown foam (400 mg, 47%). 1H NMR (CDCl3) δ 1.45 (m, 9H), 1.65 (m, 1H), 1.87 (m, 1H), 1.94 (m, 1H), 2.26 (m, 1H), 2.74 (m, 2H), 3.83 (d, 1H, J=15 Hz), 3.98 (d, 1H, J=18 Hz), 4.09 (m, 1H), 4.24 (d, 1H, J=12 Hz), 4.43 (s, 2H), 4.54 (s, 2H), 4.59 (s, 1H), 7.05 (m, 3H), 7.21 (m, 3H), 7.31 (t, 3H, J=7.0 Hz), 7.35 (t, 1H, J=7.5 Hz), 7.53 (d, 2H, J=9 Hz), 7.57 (m, 1H), 7.89 (t, 1H, J=7.5 Hz), 8.51 (t, 1H, J=6.5 Hz).
Using general procedure D: the foam from above was converted to the hydrobromide salt with simultaneous deprotection of the BOC group to provide AMD8969 (0.42 g) as a pale yellow solid. 1H NMR (D2O) 1.67–1.79 (m, 1H), 2.04–2.19 (m, 2H), 2.26–2.35 (m, 1H), 2.91 (d, 2H), 3.94 (m, 2H), 4.18 (s, 2H), 4.23 (t, 2H, J=8.7 Hz), 4.27 (s, 2H), 4.48 (dd, 1H, J=6.0, 10.2 Hz), 7.27 (d, 2H J=7.8 Hz), 7.31 (t, 1H J=7.2 Hz), 7.42 (t, 1H, J=8.4 Hz), 7.47 (d, 2H, J=7.8 Hz), 7.68 (m, 3H), 7.81 (d, 1H, J=8.1 Hz), 7.89 (d, 1H, J=7.8 Hz), 8.17 (m, 2H), 8.51 (d, 1H, J=5.1 Hz), 8.66 (d, 1H, J=5.5 Hz); 13C NMR (D2O) □ 20.38, 27.73, 47.41, 51.44, 53.35, 55.91, 59.91, 66.46, 120.85, 123.15, 125.73, 126.85, 127.97 (2 carbons), 128.27, 129.69, 130.65 (2 carbons), 131.02 (2 carbons), 133.58, 139.03, 139.53, 140.55, 144.45, 145.69, 146.93, 147.61, 148.37, 151.31, 174.26. ES-MS m/z 506 (M+H). Anal. Calcd. for C31H31N5S.4.0HBr.2.3H2O: C, 42.76; H, 4.58; N, 8.04; Br, 36.71. Found: C, 42.75; H, 4.55; N, 7.84; Br, 36.70.
EXAMPLE: 17




AMD8970: Preparation of N-(2-pyridinylmethyl)-N′-(6-methylbenzoxazol-2-ylmethyl)-N′-(5,6,7,8-tetrahydro-8-quinolinyl)-1,4-benzenedimethanamine (hydrobromide salt)
A mixture of 2-amino-5-methylphenol (616 mg, 5.0 mmol) and chloroacetic acid (945 mg, 10 mmol) was stirred in polyphosphoric acid (5 mL) for 2 hours at 120° C. to give, after work-up and chromatography, 2-chloromethyl-5-methylbenzoxazole (340 mg, 37%) as a yellow liquid. 1H NMR (CDCl3) δ 2.50 (s, 3H), 4.74 (s, 2H), 7.18 (d, 1H, J=6 Hz), 7.35 (s, 1H), 7.60 (d, 1H, J=9 Hz).
A solution of 2-chloromethyl-5-methyl-benzoxazole (340 mg, 1.9 mmol), N-(tert-butoxycarbonyl)-N-(2-pyridinylmethyl)-N′-(5,6,7,8-tetrahydro-8-quinolinyl)-1,4-benzenedimethanamine (940 mg, 2.06 mmol) and diisopropylethylamine (0.50 mL, 2.8 mmol) were stirred at 80° C. in DMF (15 mL) for 16 hours to yield, after work-up and chromatography, the desired N-(tert-butoxycarbonyl)-N-(2-pyridinylmethyl)-N′-(6-methylbenzoxazol-2-ylmethyl)-N′-(5,6,7,8-tetrahydro-8-quinolinyl)-1,4-benzenedimethanamine as a pale brown foam (700 mg, 61%). 1H NMR (CDCl3) δ 1.45 (m, 9H), 1.67 (m, 2H), 1.96 (m, 1H), 2.06 (m, 1H), 2.47 (s, 3H), 2.68 (m, 1H), 2.76 (m, 1H), 3.88 (d, 1H, J=15 Hz), 4.01 (d, 1H, J=15 Hz), 4.04 (d, 1H, J=15 Hz), 4.17 (m, 1H), 4.27 (d, 1H, J=15 Hz), 4.39 (s, 2H), 4.50 (s, 2H), 7.03 (m, 2H), 7.11 (m, 4H), 7.31 (s, 2H), 7.40 (d, 2H, J=9 Hz), 7.51 (d, 1H, J=6 Hz), 7.60 (t, 1H), 8.43 (d, 1H, J=4 Hz), 8.51 (d, 1H, J=5 Hz).
Using general procedure D: the foam from above was converted to the hydrobromide salt with simultaneous deprotection of the BOC group to provide AMD8970 (0.77 g) as a pale yellow solid. 1H NMR (D2O) 1.67–1.81 (m, 1H), 2.09–2.19 (m, 2H), 2.22–2.30 (m, 1H), 2.36 (s, 3H), 2.89 (d, 2H, J=5.1 Hz), 3.97 (s, 1H), 4.02 (d, 2H), 4.08 (s, 1H), 4.17 (s, 2H), 4.38 (s, 2H), 4.49 (dd, 1H, J=6.0, 10.5 Hz), 7.06 (d, 1H, J=8.2 Hz), 7.25 (d, 2H J=8.4 Hz), 7.30 (s, 1H), 7.33 (d, 1H J=4.5 Hz), 7.46 (d, 2H, J=8.1 Hz), 7.61 (dd, 1H, J=6.0, 7.8 Hz), 7.81 (d, 1H, J=8.4 Hz), 7.83 (d, 1H, J=7.8 Hz), 8.12 (d, 1H, J=8.1 Hz), 8.32 (dt, 1H, J=1.8, 7.8 Hz), 8.49 (d, 1H, J=5.7 Hz), 8.72 (dd, 1H, J=2.0, 5.9 Hz); 13C NMR (D2O) □ 20.73, 27.43, 46.88, 47.48, 51.50, 53.31, 55.20, 60.43, 61.99, 117.13, 121.56, 124.08, 125.28, 128.11, 128.48, 129.86, 130.82 (2 carbons), 131.10, 138.40, 139.50, 140.13, 141.76, 144.40, 145.49, 146.26, 146.67, 147.15, 149.07, 149.98, 151.12, 175.37. ES-MS m/z 504 (M+H). Anal. Calcd. for C32H33N5O.4.5HBr.2.3H2O: C, 42.27; H, 4.67; N, 7.70; Br, 39.55. Found: C, 42.17; H, 4.70; N, 7.46; Br, 39.70.
EXAMPLE: 18




AMD8988: Preparation of N-(2-pyridinylmethyl)-N′-(5-trifluoromethylbenzothioazol-2-ylmethyl)-N′-(5,6,7,8-tetrahydro-8-quinolinyl)-1,4-benzenedimethanamine (hydrobromide salt)
A mixture of 2-amino-4-trifluoromethylthiophenol (1.25 g, 5.0 mmol) and chloroacetic acid (945 mg, 10 mmol) were refluxed in polyphosphoric acid (5 mL) for 16 hours to give, after work-up and chromatography, 2-chloromethyl-5-trifluoromethylbenzothiazole (740 mg, 59%) as a colorless solid. 1H NMR (CDCl3) δ 4.97 (s, 2H), 7.67 (d, 1H, J=9 Hz), 8.02 (d, 1H, J=9 Hz), 8.29 (d, 1H).
A solution of 2-chloromethyl-5-trifluoromethylbenzothiazole (740 mg, 2.94 mmol), N-(tert-butoxycarbonyl)-N-(2-pyridinylmethyl)-N′-(5,6,7,8-tetrahydro-8-quinolinyl)-1,4-benzenedimethanamine (1.48 g, 3.23 mmol) and diisopropylethylamine (0.80 mL, 4.4 mmol) were stirred at 80° C. in DMF (15 mL) for 16 hours to yield, after work-up and chromatography, the desired N-(tert-butoxycarbonyl)-N-(2-pyridinylmethyl)-N′-(5-trifluoromethylbenzothiazol-2-ylmethyl)-N′-(5,6,7,8-tetrahydro-8-quinolinyl)-1,4-benzenedimethanamine as a pale yellow foam (550 mg, 28%). 1H NMR (CDCl3) δ 1.44 (m, 9H), 1.67 (m, 1H), 1.87 (m, 1H), 1.94 (m, 1H), 2.28 (m, 1H), 2.75 (m, 2H), 3.84 (d, 1H, J=12 Hz), 4.00 (d, 1H, J=15 Hz), 4.09 (m, 1H), 4.24 (d, 1H, J=15 Hz), 4.43 (s, 2H), 4.54 (s, 2H), 4.60 (d, 1H, J=15 Hz), 7.08 (m, 3H), 7.22 (m, 3H), 7.33 (d, 1H, J=9 Hz), 7.52 (d, 2H, J=9 Hz), 7.57 (d, 1H, J=9 Hz), 7.97 (d, 1H, J=9 Hz), 8.14 (s, 1H), 8.52 (m, 2H).
Using general procedure D: the foam from above was converted to the hydrobromide salt with simultaneous deprotection of the BOC group to provide AMD8988 (0.19 g) as a pale yellow solid. 1H NMR (D2O) 1.63–1.77 (m, 1H), 2.00–2.14 (m, 2H), 2.20–2.30 (m, 1H), 2.88 (brd, 2H), 3.81 (s, 2H), 4.07 (d, 2H, J=15.2 Hz), 4.20 (s, 2H), 4.39 (dd, 1H), 4.47 (s, 2H), 7.28 (d, 2H, J=8.1 Hz), 7.43 (d, 2H J=7.8 Hz), 7.50 (d, 1H, J=8.4 Hz), 7.68 (t, 1H J=6.9 Hz), 7.91 (t, 2H, J=7.8 Hz), 7.96 (s, 2H), 8.17 (d, 1H, J=8.1 Hz), 8.42 (t, 1H, J=8.0 Hz), 8.52 (d, 1H, J=5.4 Hz), 8.73 (d, 1H, J=5.1 Hz); 13C NMR (D2O) □ 14.54, 20.35, 27.67, 47.41, 51.50, 53.78, 55.60, 59.14, 66.43, 119.09, 123.66, 125.64, 128.00 (2 carbons), 128.34 (2 carbons), 129.60, 130.65 (2 carbons), 130.86 (2 carbons), 138.45, 139.04, 139.53, 140.41, 144.35, 145.58, 147.03, 147.48, 151.15, 151.51, 174.82. ES-MS m/z 575 (M+H). Anal. Calcd. for C32H30F3N5S.3.9HBr.1.8H2O.0.4(CH3CH2)2O: C, 42.42; H, 4.40; N, 7.36; Br, 32.76. Found: C, 42.38; H, 4.23; N, 7.21; Br, 32.73.
EXAMPLE: 19




AMD9337: Preparation of N-(2-pyridinylmethyl)-N′-(indol-2-ylmethyl)-N′-(5,6,7,8-tetrahydro-8-quinolinyl)-1,4-benzenedimethanamine (free base)
A solution of indole-2-carboxylic acid (514 mg, 3.2 mmol) in anhydrous THF (20 mL) at 0° C. was treated with lithium aluminum hydride (1.0M in hexanes, 6.4 mL, 6.4 mmol) dropwise over 5 minutes. This gave, after work-up, 2-hydroxymethylindole (300 mg, 64%) as an orange powder. 1H NMR (CDCl3) δ 1.90 (br s, 1H), 4.82 (s, 2H), 6.41 (s, 1H), 7.11 (t, 1H, J=7.5 Hz), 7.19 (t, 1H, J=7.5 Hz), 7.34 (d, 1H, J=8.1 Hz), 7.59 (d, 1H, J=7.8 Hz), 8.37 (br s, 1H).
A solution of 2-hydroxymethylindole (135 mg, 0.91 mmol) in dichloromethane (5 mL) was treated with 5 μm activated manganese dioxide (790 mg, 9.1 mmol) for 5 hours at room temperature. This gave, after work-up, the desired indole-2-carboxaldehyde (85 mg, 62%) as a brown solid. 1H NMR (CDCl3) δ 7.19 (t, 1H, J=7.5 Hz), 7.29 (s, 1H), 7.43 (m, 2H), 7.75 (d, 1H, J=7.5 Hz), 9.04 (br s, 1H), 9.86 (s, 1H).
Using general procedure B: Indole-2-carboxaldahyde (85 mg, 0.58 mmol), N-(2-nitrophenylsulfonyl)-N-(2-pyridinylmethyl)-N′-(5,6,7,8-tetrahydro-8-quinolinyl)-1,4-benzenedimethanamine (320 mg, 0.58 mmol) and sodium triacetoxyborohydride (170 mg, 0.81 mmol) were stirred at room temperature in dichloromethane (6 mL) for 16 hours to yield, after work-up and chromatography, the desired N-(2-nitrophenylsulfonyl)-N-(2-pyridinylmethyl)-N′-(indol-2-ylmethyl)-N′-(5,6,7,8-tetrahydro-8-quinolinyl)-1,4-benzenedimethanamine as a brown foam (300 mg, 77%). 1H NMR (CDCl3) δ 1.65 (m, 1H), 1.90 (m, 1H), 2.02 (m, 1H), 2.18 (m, 1H), 2.70 (m, 1H), 2.82 (m, 1H), 3.57 (d, 1H, J=15 Hz), 3.70 (d, 1H, J=15 Hz), 3.80 (d, 2H, J=15 Hz), 4.00 (m, 1H), 4.52 (d, 2H, J=3 Hz), 4.59 (s, 2H), 6.25 (s, 1H), 6.95 (m, 1H), 7.05 (m, 3H), 7.09 (m, 2H), 7.18 (d, 1H, J=7.0 Hz), 7.27 (d, 4H, J=6 Hz), 7.33 (m, 3H), 7.45 (d, 1H, J=7.5 Hz), 7.50 (d, 1H, J=7.8 Hz), 7.81 (d, 1H, J=8.5 Hz), 8.33 (d, 1H, J=4.5 Hz), 8.68 (d, 1H, J=5.0 Hz).
Using general procedure C: The solid from above (0.15 g, 0.22 mmol) was treated with thiophenol (0.1 mL, 0.9 mmol) and potassium carbonate (0.15 g, 1.1 mmol) in anhydrous acetonitrile (2 mL) to provide, after chromatography, AMD9337 (55 mg) as a pale yellow solid. 1H NMR (CDCl3) 1.63–1.72 (m, 1H), 1.85–1.95 (m, 1H), 1.97–2.09 (m, 1H), 2.12–2.22 (m, 1H), 2.68 (d, 1H, J=16.2 Hz), 2.77–2.90 (m, 1H), 3.65 (d, 1H, J=13.5 Hz), 3.78 (s, 2H), 3.80 (d, 1H, J=14.1 Hz), 3.85 (s, 2H), 3.90 (s, 2H), 4.05 (dd, 1H, J=5.7, 9.0 Hz), 6.24 (s, 1H), 7.02 (t, 1H, J=7.5 Hz), 7.11 (t, 2H, J=7.2 Hz), 7.13 (t, 2H, J=7.2 Hz), 7.27 (d, 3H, J=7.8 Hz), 7.37 (dd, 1H, J=12.3, 13.8 Hz), 7.41 (d, 3H, J=8.1 Hz), 7.45 (dd, 1H, J=8.1, 8.4 Hz), 7.61 (dt, 1H, J=1.8, 7.5 Hz), 8.55 (d, 1H, J=7.2), 8.63 (d, 1H, J=7.2 Hz); 13C NMR (CDCl3) □ 21.09, 23.69, 29.15, 47.41, 53.25, 53.82, 54.48, 59.15, 99.14, 110.98, 118.85, 119.65, 120.57, 121.89 (2 carbons), 122.35, 128.15 (2 carbons), 128.68 (2 carbons), 128.85, 134.44, 135.89, 136.40, 136.86, 138.77 (2 carbons), 139.11, 147.01, 149.25, 158.04, 159.78. ES-MS m/z 488 (M+H). Anal. Calcd. for C32H33N5: C, 77.11; H, 6.92; N, 14.05. Found: C, 77.02; H, 6.82; N, 13.75.
EXAMPLE: 20




AMD9338: Preparation of N-(2-pyridinylmethyl)-N′-(4-methylbenzimidazol-2-ylmethyl)-N′-(5,6,7,8-tetrahydro-8-quinolinyl)-1,4-benzenedimethanamine (hydrobromide salt)
A mixture of 2-amino-3-methylaniline (826 mg, 6.8 mmol) and chloroacetic acid (1.03 g, 10.9 mmol) were refluxed in 4N hydrochloric acid (6 mL) for 2 hours to give, after work-up, 2-chloromethyl-4-methylbenzimidazole (781 mg, 64%) as a brown solid. 1H NMR (CDCl3) δ 2.59 (s, 3H), 4.85 (s, 2H), 7.07 (d, 1H, J=6 Hz), 7.17 (t, 1H, J=7.5 Hz), 7.42 (d, 1H, J=9 Hz).
A solution of 2-chloromethyl-4-methylbenzimidazole (150 mg, 0.83 mmol), N-(tert-butoxycarbonyl)-N-(2-pyridinylmethyl)-N′-(5,6,7,8-tetrahydro-8-quinolinyl)-1,4-benzenedimethanamine (480 mg, 1.0 mmol) and diisopropylethylamine (0.22 mL, 1.25 mmol) were stirred at 80° C. in DMF (5 mL) for 16 hours to yield, after work-up and chromatography, the desired N-(tert-butoxycarbonyl)-N-(2-pyridinylmethyl)-N′-(4-methylbenzimidazol-2-ylmethyl)-N′-(5,6,7,8-tetrahydro-8-quinolinyl)-1,4-benzenedimethanamine as a pale brown foam (100 mg, 25%). 1H NMR (CDCl3) δ 1.39 (br s, 9H), 1.74 (br, 3H), 2.06 (m, 2H), 2.25 (m, 1H), 2.65 (d, 2H, J=15 Hz), 2.85 (m, 1H), 3.71 (s, 2H), 3.95 (d, 1H, J=15 Hz), 4.08 (m, 1 Hz), 4.21 (d, 1H, J=18 Hz), 4.44 (m, 4H), 6.99 (m, 1H, J=9 Hz), 7.02–7.18 (br m, 7H), 7.33 (d, 2H, J=9 Hz), 7.43 (d, 1H, J=7.5 Hz), 7.49 (d, 1H, J=7.5 Hz), 8.44 (d, 1H, J=4 Hz), 8.70 (d, 1H, J=3 Hz).
Using general procedure D: the residue from above was converted to the hydrobromide salt with simultaneous deprotection of the BOC group to provide AMD9338 (0.10 g) as a white solid. 1H NMR (D2O) 1.82–1.95 (m, 1H), 2.17–2.31 (m, 2H), 2.42 (s, 3H), 2.43 (m, 1H), 3.03 (brd, 2H), 3.72 (d, 2H, J=3.6 Hz), 3.81 (d, 2H, J=7.2 Hz), 3.98 (s, 2H), 4.42 (dd, 1H, J=16.2 Hz), 4.61 (d, 1H, J=17.5 Hz), 4.75 (m, 1H), 7.00 (d, 2H, J=8.1 Hz), 7.11 (d, 1H J=7.5 Hz), 7.19 (d, 2H, J=7.8 Hz), 7.24 (d, 1H J=7.5 Hz), 7.35 (d, 1H, J=8.4 Hz), 7.42 (d, 1H, J=7.8 Hz), 7.53 (dd, 1H, J=5.7, 7.2 Hz), 7.92 (dt, 1H, J=2.1, 6.6 Hz), 7.96 (dt, 1H, J=1.5, 7.8 Hz), 8.40 (d, 1H, J=7.8 Hz), 8.59 (d, 1H, J=7.8 Hz), 8.74 (d, 1H, J=7.2 Hz); 13C NMR (D2O) □ 16.33, 20.46, 20.90, 27.87, 48.25, 50.23, 50.49, 56.87, 63.42, 111.24, 124.69, 126.15, 126.75, 127.06 (3 carbons), 129.78, 130.06 (2 carbons), 130.23, 130.38, 130.83 (2 carbons), 138.44, 139.65, 141.05, 144.45, 146.12, 147.07, 148.29, 150.80, 151.16. ES-MS m/z 503 (M+H). Anal. Calcd. for C32H34N6.4.1HBr.3.1H2O: C, 43.17; H, 5.02; N, 9.44; Br, 36.80. Found: C, 43.36; H, 4.97; N, 9.33; Br, 36.58.
EXAMPLE: 21




AMD9345: Preparation of N-(2-pyridinylmethyl)-N′-(4-fluorobenzimidazol-2-ylmethyl)-N′-(5,6,7,8-tetrahydro-8-quinolinyl)-1,4-benzenedimethanamine (hydrobromide salt)
A mixture of 2-amino-3-fluoroaniline (130 mg, 1.0 mmol) and chloroacetic acid (190 mg, 2.0 mmol) were refluxed in 4N hydrochloric acid (1.5 mL) for 16 hours to give, after work-up and chromatography, 2-chloromethyl-4-fluorobenzimidazole (89 mg, 47%) as a brown solid. 1H NMR (CDCl3) δ 4.86 (s, 2H), 7.00 (m, 1H), 7.17 (m, 1H), 7.25 (d, 1H, J=9 Hz).
A solution of 2-chloromethyl-4-fluorobenzimidazole (89 mg, 0.5 mmol), N-(tert-butoxycarbonyl)-N-(2-pyridinylmethyl)-N′-(5,6,7,8-tetrahydro-8-quinolinyl)-1,4-benzenedimethanamine (270 mg, 0.59 mmol) and diisopropylethylamine (0.13 mL, 0.71 mmol) were stirred at 80° C. in DMF (5 mL) for 16 hours to yield, after work-up and chromatography, the desired N-(tert-butoxycarbonyl)-N-(2-pyridinylmethyl)-N′-(4-fluorobenzimidazol-2-ylmethyl)-N′-(5,6,7,8-tetrahydro-8-quinolinyl)-1,4-benzenedimethanamine as a pale brown foam (25 mg, 9%). 1H NMR (CDCl3) δ 1.41 (m, 9H), 1.69 (m, 1H), 2.05 (m, 2H), 2.25 (m, 1H), 2.72 (m, 1H), 2.83 (m, 1H), 3.73 (d, 2H, J=6 Hz), 4.00 (d, 1H, J=15 Hz), 4.07 (m, 1H), 4.17 (d, 1H, J=9 Hz), 4.24 (d, 1H, J=9 Hz), 4.38 (s, 2H), 4.47 (d, 1H, J=12 Hz), 6.90 (m, 1H), 7.07–7.15 (m, 7H), 7.26 (t, 2H, J=7 Hz), 7.44 (d, 1H, J=9 Hz), 7.50 (m, 1H), 8.44 (d, 1H, J=4.5 Hz), 8.69 (d, 1H, J=5.5 Hz).
Using general procedure D: the residue from above was converted to the hydrobromide salt with simultaneous deprotection of the BOC group to provide AMD9345 (0.02 g) as a pale yellow solid. 1H NMR (D2O) 1.82–1.95 (m, 1H), 2.17–2.31 (m, 2H), 2.40–2.45 (m, 1H), 3.02 (br d, 2H), 3.81 (s, 2H), 3.82 (d, 2H, J=9.0 Hz), 4.03 (s, 2H), 4.45 (d, 1H, J=16.8 Hz), 4.63 (d, 1H, J=16.8 Hz), 4.79 (m, 1H), 7.05 (d, 2H, J=7.8 Hz), 7.12 (t, 1H J=9.3 Hz), 7.22 (d, 2H, J=7.8 Hz), 7.30 (m, 1H), 7.34 (s, 1H), 7.39 (d, 1H, J=7.8 Hz), 7.48 (t, 1H, J=6.2 Hz), 7.91 (t, 2H, J=7.2 Hz), 8.38 (d, 1H, J=8.1 Hz), 8.56 (d, 1H, J=4.8 Hz), 8.72 (d, 1H, J=5.7 Hz); 13C NMR (D2O) □ 20.44, 20.95, 27.85, 49.38, 50.27 (2 carbons), 56.65, 63.26, 110.12, 111.81, 112.17, 114.22, 125.81, 126.14 (2 carbons), 130.21 (3 carbons), 130.94 (2 carbons), 138.23, 139.65, 141.04, 141.79, 142.74, 147.94, 148.30, 148.63, 150.73, 152.82, 155.19. ES-MS m/z 507 (M+H). Anal. Calcd. for C31H31N6F.3.9HBr.3.5H2O: C, 42.06; H, 4.77; N, 9.49; Br, 35.20. Found: C, 42.06; H, 4.56; N, 9.19; Br, 35.16.
EXAMPLE: 22




AMD9383: Preparation of N-(2-pyridinylmethyl)-N′-(4-bromobenzimidazol-2-ylmethyl)-N′-(5,6,7,8-tetrahydro-8-quinolinyl)-1,4-benzenedimethanamine (hydrobromide salt)
A mixture of 3-bromonitrobenzene (6.06 g, 30 mmol) and o-methylhydroxylamine hydrochloride (3.13 g, 37.5 mmol) were reacted in the presence of copper (I) chloride (0.59 g, 6 mmol) and potassium t-butoxide (10.1 g, 90 mmol) in DMF (75 mL). Aqueous work-up and chromatography gave 2-amino-3-bromonitrobenzene (0.36 g, 6%) as an orange powder. 1H NMR (CDCl3) δ 6.60 (t, 1H, J=9 Hz), 7.70 (d, 1H, J=9 Hz), 8.14 (d, 1H, J=9 Hz).
The powder from above (0.36 g, 1.66 mmol) was dissolved in methanol (17 mL) and treated with iron powder (0.93 g, 16.6 mmol) and concentrated hydrochloric acid (6.8 mL) at 0° C. for 30 minutes. This gave, after work-up, 2-amino-3-bromoaniline (0.25 g, 79%) as a dark green solid. 1H NMR (CDCl3) δ 6.62 (d, 2H, J=9 Hz), 6.97 (t, 1H, J=9 Hz).
A mixture of 2-amino-3-bromoaniline (245 mg, 1.3 mmol) and chloroacetic acid (250 mg, 2.6 mmol) were refluxed in 4N hydrochloric acid (1.5 mL) for 16 hours to give, after work-up and chromatography, 4-bromo-2-chloromethylbenzimidazole (160 mg, 50%) as a brown solid. 1H NMR (CDCl3) δ 4.89 (s, 2H), 7.15 (t, 1H, J=6 Hz), 7.44 (d, 1H, J=6 Hz), 7.69 (d, 1H, J=9 Hz), 8.53 (br, 1H).
A solution of 4-bromo-2-chloromethylbenzimidazole (250 mg, 1.0 mmol), N-(tert-butoxycarbonyl)-N-(2-pyridinylmethyl)-N′-(5,6,7,8-tetrahydro-8-quinolinyl)-1,4-benzenedimethanamine (584 mg, 1.25 mmol) and diisopropylethylamine (0.27 mL, 1.5 mmol) were stirred at 80° C. in DMF (10 mL) for 16 hours to yield, after work-up and chromatography, the desired N-(tert-butoxycarbonyl)-N-(2-pyridinylmethyl)-N′-(4-bromobenzimidazol-2-ylmethyl)-N′-(5,6,7,8-tetrahydro-8-quinolinyl)-1,4-benzenedimethanamine as a pale brown foam (50 mg, 7%). 1H NMR (CDCl3) δ 1.45 (m, 9H), 1.65 (m, 1H), 2.05 (m, 2H), 2.26 (m, 1H), 2.75 (m, 1H), 2.86 (m, 1H), 3.72 (d, 2H, J=9 Hz), 3.95 (d, 1H, J=15 Hz), 4.08 (m, 1H), 4.26 (d, 1H, J=15 Hz), 4.37 (s, 2H), 4.48 (d, 2H, J=15 Hz), 7.00–7.30 (m, 6H), 7.31 (m, 3H), 7.45 (t, 2H, J=7.0 Hz), 7.5 (d, 1H, J=7.5 Hz), 8.41 (d, 1H, J=4.5 Hz), 8.88 (d, 1H, J=5.5 Hz).
Using general procedure D: the residue from above was converted to the hydrobromide salt with simultaneous deprotection of the BOC group to provide AMD9383 (0.02 g) as a pale yellow solid. 1H NMR (D2O) 01.82–1.95 (m, 1H), 2.17–2.31 (m, 2H), 2.40–2.45 (m, 1H), 3.02 (brd, 2H), 3.77 (d, 2H, J=2.4 Hz), 3.81 (d, 2H, J=6.9 Hz), 4.13 (s, 2H), 4.44 (d, 1H, J=16.2 Hz), 4.63 (d, 1H, J=16.2 Hz), 4.79 (m, 1H), 7.02 (d, 2H, J=8.1 Hz), 7.18 (d, 2H, J=8.1 Hz), 7.30 (t, 1H, J=8.1 Hz), 7.55 (t, 1H, J=7.8 Hz), 7.56 (d, 2H, J=8.1 Hz), 7.61 (t, 1H, J=6.1 Hz), 7.92 (t, 1H, J=6.9 Hz), 8.06 (dt, 1H, J=1.5, 8.0 Hz), 8.39 (d, 1H, J=8.1 Hz), 8.62 (d, 1H, J=4.8 Hz), 8.74 (d, 1H, J=5.1 Hz); 13C NMR (D2O) □ 20.41, 20.91, 27.84, 49.44, 50.16 (2 carbons), 63.50 (2 carbons), 105.55, 113.34, 125.73, 125.96, 126.16, 127.83, 129.54, 130.15 (3 carbons), 138.80 (3 carbons), 131.24, 138.35, 139.63, 141.08, 141.54, 148.13, 148.28, 148.76, 150.75, 152.80. ES-MS m/z 569 (M+H). Anal. Calcd. for C31H31N6Br.4.4HBr.4.4H2O: C, 37.13; H, 4.44; N, 8.38; Br, 43.03. Found: C, 37.23; H, 4.18; N, 8.30; Br, 42.84.
EXAMPLE: 23




AMD9333: Preparation of N-2-pyridinylmethyl)-N′-[2-(1H-benzimidazole-2-yl)eth-1-yl]-N′-(5,6,7,8-tetrahydro-8-quinolinyl)-1,4-benzenedimethanamine (hydrobromide salt)
2-(2-Chloroethyl)-1H-benzimidazole
A mixture of 1,2-Phenylenediamine (1.3 g, 12.0 mmol) and 3-chloropropionic acid (2.0 g, 18.5 mmol) were refluxed in 4N HCl (13 mL) for 16 hours to give the title compound as white solid (700 mg, 32%). 1H NMR (CD3OD) □ 3.35 (t, 2H, J=6.8 Hz), 4.00 (t, 2H, J=6.8 Hz), 7.18–7.25 (m, 2H), 7.49–7.55 (m, 2H); ES-MS m/z 181.0 (M+H).
N-(tert-butoxycarbonyl)-2-(2-Chloroethyl)-benzimidazole
To a solution of 2-(2-Chloroethyl)-1H-benzimidazole (205 mg. 1.13 mmol) in DMF (8 mL) was added N,N-diisopropylethylamine (0.42 mL, 2.41 mmol) and di-tert-butyl dicarbonate (272 mg, 1.24 mmol). The resulting solution was allowed to stir for 16 hours at room temperature under N2 and then concentrated. The residues was diluted with 300-mL ethyl acetate, and washed with sat. NaHCO3, brine and dried over Na2SO4. Evaporation of the solvent and purification of the residue by column chromatography on silica gel (50% ethyl acetate in CH2Cl2) gave the title compound (183 mg, 57%) as a white solid. 1H NMR (CDCl3) □ 1.73 (s, 9H), 3.69 (t, 2H, J=7.4 Hz), 4.05 (t, 2H, J=7.4 Hz), 7.30–7.36 (m, 2H), 7.68–7.74 (m, 1H), 7.90–7.95 (m, 1H); ES-MS m/z 281.0 (M+H).
A mixture of N-(tert-butoxycarbonyl)-N-(2-pyridinylmethyl)-N′-(5,6,7,8-tetrahydro-8-quinolinyl)-1,4-benzenedimethanamine (143 mg, 0.31 mmol), 1-(tert-butoxycarbonyl)-2-(2-Chloroethyl)-benzimidazole (83 mg, 0.29 mmol), NaI (2 mg) and diisopropylethylamine (0.1 mL, 0.57 mmol) were heated to reflux in CH3CN (2 mL) for 24 hours under N2. The reaction mixture was diluted with 200-mL ethyl acetate, and washed with sat. NaHCO3, brine and dried over Na2SO4. Evaporation of the solvent and purification of the residue by flash chromatograph on silica gel, followed by radial chromatograph on silica gel (1 mm plate), using 3:3:94 CH3OH—NH3 H2O—CH2Cl2, gave the desired intermediate (88 mg, 43%) as a white solid. 1H NMR (CDCl3) 1.44 (br, d, 9H), 1.61 (s, 9H), 1.84–1.95 (m, 2H), 2.05–2.08 (m, 1H), 2.67–2.75 (m, 2H), 3.13–3.14 (m, 1H), 3.41–3.45 (m, 4H), 3.72 (d, 1H, J=15 Hz), 3.97 (d, 1H, J=15 Hz), 4.12–4.17 (m, 1H), 4.39 (d, 2H, J=6.0 Hz), 4.50 (d, 2H, J=12 Hz), 7.00–7.22 (m, 6H), 7.25–7.30 (m, 4H), 7.64–7.73 (m, 2H), 7.88–7.92 (m, 1H), 8.44 (d, 1H), 8.52 (d, 1H); ES-MS m/z 703.5 (M+H).
Using general procedure D: the intermediate from above was converted to the corresponding hydrobromide salt with simultaneous deprotection of the BOC group to afford AMD9333 as a white solid. 1H NMR (D2O) □ 1.77–1.84 (m, 1H), 1.99–2.14 (m, 2H), 2.32–2.34 (m, 1H), 2.93 (s, 2H), 3.07–3.13 (m, 1H), 3.36–3.48 (m, 3H), 3.73 (s, 2H), 4.02 (d, 1H, J=12.9 Hz), 4.10 (d, 1H, J=13.2 Hz), 4.42–4.44 (br, 3H), 7.16 (d, 2H, J=8.1 Hz), 7.28 (d, 2H, J=7.8 Hz), 7.47–7.53 (m, 2H), 7.58–7.64 (m, 2H), 7.73–7.76 (m, 3H), 8.23 (d, 2H, J=7.8 Hz), 8.37 (d, 1H, J=4.8 Hz), 8.65 (d, 1H, J=4.5 Hz); 13C NMR (D2O) □ 20.50, 26.74, 27.80, 48.97, 49.32, 51.11, 54.56, 59.30, 114.08, 125.65, 126.56, 129.84, 130.59, 139.31, 139.52, 140.64, 143.10, 146.78, 147.49, 152.02; ES-MS m/z 503.2 (M+H); Anal. Calcd. for (C32H34N6).4.0(HBr).2.0(H2O): C, 44.57; H, 4.91; N, 9.75; Br, 37.06. Found: C, 44.33; H, 5.03; N, 9.52; Br, 37.35.
EXAMPLE: 24




AMD9334: Preparation of N-(2-pyridinylmethyl)-N′-[3-(1H-benzimidazol-2-yl)prop-1-yl]-N′-(5,6,7,8-tetrahydro-8-quinolinyl)-1,4-benzenedimethanamine (hydrobromide salt)
3-(1H-Benzimidazol-2-yl)propan-1-ol
A mixture of 1,2-Phenylenediamine (1.0 g, 12.0 mmol) and 4-chlorobutyric acid (1.5 mL, 15.17 mmol) were refluxed in 4N HCl (13 mL) for 16 hours under N2 to give the title compound as white solid (900 mg, 50%). 1H NMR (CD3OD) □ 2.04–2.08 (m, 2H), 2.97 (t, 2H, J=7.8 Hz), 5.64 (t, 2H, J=6.6 Hz), 7.15–7.21 (m, 2H), 7.47–7.49 (m, 2H); ES-MS m/z 177.1 (M+H).
3-(1-tert-butoxycarbonyl-Benzimidazol-2-yl)-propan-1-ol
To a solution of 3-(1H-Benzimidazol-2-yl)propan-1-ol (249 mg. 1.41 mmol) in DMF (7 mL) was added, N,N-diisopropylethylamine (0.50 mL, 2.80 mmol) and di-tert-butyl dicarbonate (307 mg, 1.41 mmol). The resulting solution was allowed to stir for 16 hours at room temperature under N2 and then concentrated. The residues was diluted with 300-mL ethyl acetate, and washed with sat. NaHCO3, brine and dried over Na2SO4. Evaporation of the solvent and flash chromatograph of residue over silica gel, using 50% ethyl acetate in CH2Cl2, gave the title compound (372 mg, 95%) as pure white solid. 1H NMR (CDCl3) □ 1.72 (s, 9H), 2.14–2.22 (m, 2H), 3.37 (t, 2H, J=6.9 Hz), 3.80 (t, 2H, J=5.7), 7.28–7.34 (m, 2H), 7.66–7.70 (m, 1H), 7.87–7.91 (m, 1H); ES-MS m/z 277.1 (M+H).
3-(1-tert-butoxycarbonyl-Benzimidazol-2-yl)propionaldehyde
To a solution of 3-(1-tert-butoxycarbonyl-Benzimidazol-2-yl)propan-1-ol (186 mg, 0.67 mmol) in CH2Cl2 (4 mL) was added Dess-Martin reagent (314 mg, 0.74 mmol) and the resulting mixture was allowed to stir at room temperature under N2 for 1 hour. The mixture was further diluted with 300-mL ethyl acetate, and washed with 1N NaOH, brine and dried over Na2SO4. Evaporation of the solvent and flash chromatograph of residue over silica gel, using 20% ethyl acetate in CH2Cl2, gave the title compound (141 mg, 76%) as pure white solid. 1H NMR (CDCl3) □ 1.72 (s, 9H), 3.13 (t, 2H, J=6.8 Hz), 3.52 (t, 2H, J=6.8 Hz), 7.28–7.34 (m, 2H), 7.66–7.67 (m, 1H), 7.87–7.91 (m, 1H), 9.97 (s, 1H).
Using general procedure B: Reaction of 3-(1-tert-butoxycarbonyl-Benzimidazol-2-yl)-propionaldehyde (141 mg, 0.51 mmol), N-(tert-butoxycarbonyl)-N-(2-pyridinylmethyl)-N′-(5,6,7,8-tetrahydro-8-quinolinyl)-1,4-benzenedimethanamine (235 mg, 0.512 mmol), acetic acid (0.05 mL) and sodium triacetoxyborohydride (326 mg, 1.54 mmol) in THF (5 mL) at room temperature under N2 for 40 min., followed by purification of crude material using radial chromatography on silica gel (2 mm plate, 3:3:94 CH3OH—NH3 H2O—CH2Cl2), afforded the desired intermediate (320 mg, 87%) as white foam. 1H NMR (CDCl3) □ 1.44 (d, 9H, J=23.1 Hz), 1.67 (s, 9H), 1.84–2.05 (m, 6H), 2.65–2.74 (m, 3H), 2.89–2.98 (m, 1H), 3.10–3.23 (m, 2H), 3.65 (d, 1H, J=14.4 Hz), 3.93 (d, 1H, J=14.4 Hz), 4.05–4.10 (m, 1H), 4.40 (br, d, 2H), 4.50 (br, d, 2H), 6.98 (dd, 1H, J=4.5, 7.8 Hz), 7.08–7.15 (m, 3H), 7.25–7.28 (m, 4H), 7.36 (d, 2H, J=8.1 Hz), 7.59–7.66 (m, 2H), 7.68–7.91 (m, 1H), 8.43 (d, 1H, J=3.6 Hz), 8.51 (d, 1H, J=4.2 Hz); ES-MS m/z 717.6 (M+H).
Using general procedure D: N-(tert-butoxycarbonyl)-N-(2-pyridinylmethyl)-N′-[3-[3-(tert-butoxycarbonyl)-benzimidazol-2-yl]prop-1-yl]-N′-(5,6,7,8-tetrahydro-8-quinolinyl)-1,4-benzenedimethanamine from above was converted to the corresponding hydrobromide salt with simultaneous deprotection of BOC groups to afford AMD9334 as a white solid. 1H NMR (D2O) □ 1.71–1.81 (m, 1H), 2.06–2.13 (m, 3H), 2.21–2.41 (m, 2H), 2.81 (s, 2H), 2.88–2.97 (m, 1H), 3.15 (ddd, 2H, J=6.6, 7.2, 7.2 Hz), 3.23–3.29 (m, 1H), 4.07 (d, 1H, J=13.5 Hz), 4.16 (d, 1H, J=13.5 Hz), 4.31 (s, 2H), 3.63 (br, 3H), 7.32–7.43 (m, 3H), 7.45–7.54 (m, 4H), 7.59–7.63 (m, 2H), 7.75 (d, 1H, J=7.8 Hz), 8.00 (ddd, 1H, J=0.9, 8.1, 5.7 Hz), 8.05 (d, 1H, J=8.1 Hz), 8.41 (d, 1H, J=5.1 Hz), 8.52 (ddd, 1H, J=1.5, 8.1, 8.1 Hz), 8.77–8.79 (m, 1H); 13C NMR (D2O) □ 20.38, 20.84, 23.86, 23.96, 27.43, 47.58, 50.08, 51.58, 55.22, 61.36, 114.03, 124.98, 126.62, 128.06, 128.42, 130.62, 131.11, 131.48, 134.56, 137.35, 142.22, 144.35, 145.58, 147.14, 149.78, 152.20; ES-MS m/z 517.3 (M+H); Anal. Calcd. for (C33H36N6).4.8(HBr).3.0(H2O).0.4(C4H10O): C, 42.03; H, 5.18; N, 8.50; Br, 38.79. Found: C, 41.98; H, 5.08; N, 8.34; Br, 38.78.
EXAMPLE: 25




AMD8931: Preparation of N-(2-pyridinylmethyl)-N′-(4-Phenyl-1H-imidazol-2-ylmethyl)-N′-(5,6,7,8-tetrahydro-8-quinolinyl)-1,4-benzenedimethanamine (free base)
The following general procedures were used for the synthesis of functionalized imidazole derivatives:
General Procedure for Bromination of Aryl Ketones
To a stirred solution of ketone (1 equiv.), acetic acid (1 equiv.) in water ( ̃4.2 M), at 79° C., was added bromine (1.15 equiv.) slowly (over two hours) from an addition funnel. The resultant solution was stirred till the solution decolourised. Water ( ̃0.12 mL/mmol of ketone) was added. The mixture was cooled to room temperature, and neutralised with Na2CO3. The oil was separated from aqueous layer, and the aqueous layer was extracted with CH2Cl2 (3×10 mL/mmol). The combined organic phases were dried (Na2SO4) and concentrated. The crude material was purified by re-crystallisation or silica gel chromatography.
Preparation of 2-Bromo-1-phenyl-ethanone
Reaction of acetophenone (5.0 g, 42.00 mmol), acetic acid (2.4 mL, 42.00 mmol), and bromine (2.5 mL, 48.00 mmol) followed by recrystallisation from cold EtOAc/Hexane gave the title compound (3.4 g, 41%) as a white crystal. 1H NMR (300 MHz, CDCl3) δ 4.47 (s, 2H), 7.51 (d, 2H, J=7.5 Hz), 7.63 (t, 1H, J=7.5 Hz), 8.00 (d, 2H, J=7.2 Hz).
General Procedure for Preparation of Imidazoles from □□romo-Ketones
To a stirred suspension of the bromo-ketones (1 equiv.), at room temperature, was added form amide ( ̃7 equiv.). The resultant solution was stirred at 170° C. for the indicated time ( ̃4 h). CHCl3 was added (10 mL/mmol), and the solution was washed with H2O. The aqueous layer was extracted with CHCl3 (3×5 mL/mmol). The combined organic phases were dried (Na2SO4) and concentrated. The crude material was purified by recrystallisation or chromatography.
Preparation of 4-phenylimidazole
Reaction of 2-bromo-1-phenyl-ethanone (3.4 g, 17.09 mmol), and formamide (4.3 mL/107.64 mmol), followed by chromatography on silica gel (EtOAc) gave the title compound (902 mg, 37%) as a yellow solid. 1H NMR (300 MHz, CDCl3) δ 7.29 (s, 1H), 7.36 (s, 1H), 7.40 (dd, 2H, J=7.5, 7.5 Hz), 7.72–7.75 (m, 3H).
General Procedure for SEM Protection of Imidazoles
To a stirred suspension of NaH (1 equiv.), at room temperature, was added the imidazole (1.03 equiv.) anhydrous DMF solution ( ̃0.6 M) dropwise. After the resultant solution was stirred at room temperature for the indicated time ( ̃1.5 h), SEMCl (1.09 equiv.) was added. The solution was stirred for the indicated time ( ̃1 h). Water ( ̃2 mL/mmol of imidazole) was added, extracted with EtOAC (3×10 mL/mmol of imidazole). The combined organic phases were dried (Na2SO4) and concentrated. The crude material was purified by silica gel chromatography.
Preparation of 4-Phenyl-1-(2-trimethylsilanyl-ethoxymethyl)-1H-imidazole
Reaction of 4-phenylimidazole (400 mg, 2.78 mmol), NaH (60%, 108 mg, 2.70 mmol), and SEMCl (520 uL/2.94 mmol) followed by column chromatography on silica gel (hexane/EtOAC 1:1) gave the title compound (500 mg, 67%) as a yellow oil. 1H NMR (300 MHz, CDCl3) δ 0.00 (s, 9H), 0.92 (t, 2H, J=9.0 Hz), 3.54 (t, 2H, J=9.0 Hz), 5.27 (s, 2H), 7.17 (s, 1H), 7.37–7.47 (m, 3H), 7.56 (d, 2H, J=9.0 Hz), 7.68 (s, 1H). ES-MS m/z 275 (M+H).
General Procedure for the Preparation of 2-carboxaldehyde Imidazole Derivatives from SEM-protected Imidazoles
To a stirred solution of the SEM-protected imidazole (1 equiv.) in anhydrous THF ( ̃0.2 M), at −40° C., was added 2.5 M n-BuLi Hexane solution (1.3 equiv.). After the resulting solution was stirred at  ̃40° C. for the indicated time ( ̃20 min), DMF (3–4 equiv.) was added, and the stirring was continued for indicated time (1–4 h) at  ̃40° C. Saturated NH4Cl solution ( ̃3 mL/mmol of imidazole) was added, extracted with EtOAC (3×60 mL/mmol of imidazole). The combined organic phases were dried (Na2SO4) and concentrated. The crude material was purified by chromatography.
Preparation of 4-Phenyl-1-(2-trimethylsilanyl-ethoxymethyl)-1H-imidazole-2-carbaldehyde
Reaction of 4-phenyl-1-(2-trimethylsilanyl-ethoxymethyl)-1H-imidazole (380 mg, 1.39 mmol), 2.5 M n-BuLi (720 uL, 1.80 mmol), and DMF (323 uL, 4.17 mmol) for 4 h at −40° C. gave the title compound (411 mg, 98%) as a yellow oil. 1H NMR (300 MHz, CDCl3) δ 0.00 (s, 9H), 0.93 (t, 2H, J=9.0 Hz), 3.61 (t, 2H, J=9.0 Hz), 5.83 (s, 2H), 7.26–7.46 (m, 3H), 7.65 (s, 1H), 7.83 (d, 2H, J=9.0 Hz), 9.89 (s, 1H).
Using general procedure B: Reaction of N-(2-nitrobezenesulfonyl)-N-(2-pyridinylmethyl)-N′-(5,6,7,8-tetrahydro-8-quinolinyl)-1,4-benzenedimethanamine (244 mg, 0.45 mmol), 4-phenyl-1-(2-trimethylsilanyl-ethoxymethyl)-1H-imidazole-2-carbaldehyde (150 mg, 0.50 mmol), and NaBH(OAc)3 (286 mg, 1.35 mmol) for 1 h at room temperature followed by column chromatography on silica gel (CH2Cl2/MeOH/NH4OH 98:1:1) gave N-(2-nitrobezenesulfonyl)-N-(2-pyridinylmethyl)-N′-[4-phenyl-1-[(2-trimethylsilyl)ethoxy]methyl-imidazol-2-ylmethyl]-N′-(5,6,7,8-tetrahydro-8-quinolinyl)-1,4-benzenedimethanamine (266 mg, 71%) as a yellow foam. 1H NMR (300 MHz, CDCl3) δ 0.00 (s, 9H), 0.82 (dd, 2H, J=9.0, 9.0 Hz), 1.59–1.61 (m, 2H), 1.99–2.03 (m, 2H), 2.67–2.72 (m, 2H), 3.32–3.39 (m, 2H), 3.66 (d, 1H, J=15.0 Hz), 3.83–4.03 (m, 4H), 4.50 (s, 2H), 4.51 (s, 2H), 5.45 (d, 1H, J=12.0 Hz), 5.73 (d, 1H, J=12.0 Hz), 6.97–7.35 (m, 12H), 7.49–7.71 (m, 6H), 7.90 (d, 1H, J=9.0 Hz), 8.30 (d, 1H, J=4.2 Hz), 8.50 (d, 1H, J=4.2 Hz). ES-MS m/z 830 (M+H).
General Procedure E: SEM-deprotection
To a stirred solution of the SEM-protected compound (1 equiv.) was added 6N HCl (30 mL/mmol), and the resultant solution was stirred at 50° C. for indicated time. The solution was diluted with water (50 mL/mmol), and it was neutralised with NaHCO3 and extracted with EtOAc (3×100 mL/mmol). The combined organic phases were dried (Na2SO4) and concentrated. The crude material was purified by chromatography.
Preparation of N-(2-nitrobezenesulfonyl)-N-(2-pyridinylmethyl)-N′-(4-phenyl-1H-imidazol-2-ylmethyl)-N′-(5,6,7,8-tetrahydro-8-quinolinyl)-1,4-benzenedimethanamine
Using general procedure E: Reaction of N-(2-nitrobezenesulfonyl)-N-(2-pyridinylmethyl)-N′-[4-phenyl-1-[(2-trimethylsilyl)ethoxy]methyl-imidazol-2-ylmethyl]-N′-(5,6,7,8-tetrahydro-8-quinolinyl)-1,4-benzenedimethanamine (190 mg, 0.23 mmol), and 6N HCl (6.0 mL) for 3 h at 50° C. followed by column chromatography on silica gel (CH2Cl2/MeOH/NH4OH 98:1:1) gave the title compound (141 mg, 88%) as a yellow foam. 1H NMR (300 MHz, CDCl3) δ 1.65–1.66 (m, 1H), 2.01–2.05 (m, 2H), 2.21–2.23 (m, 1H), 2.69–2.85 (m, 2H), 3.59 (br s, 2H), 3.64 (d, 1H, J=16.2 Hz), 4.06 (d, 2H, J=16.2 Hz), 4.44–4.49 (m, 2H), 4.56 (br s, 2H), 6.70–7.06 (m, 3H), 7.19–7.22 (m, 5H), 7.33–7.53 (m, 8H), 7.66–7.83 (m, 3H), 8.32 (d, 1H, J=4.2 Hz), 8.63 (d, 1H, J=4.2 Hz). ES-MS m/z 700 (M+H).
Using general procedures C: Reaction of N-(2-nitrobezenesulfonyl)-N-(2-pyridinylmethyl)-N′-(4-phenyl-1H-imidazol-2-ylmethyl)-N′-(5,6,7,8-tetrahydro-8-quinolinyl)-1,4-benzenedimethanamine (135 mg, 0.19 mmol), thiophenol (57 uL, 0.56 mmol), and K2CO3 (128 mg, 0.93 mmol) for 4 h at room temperature followed by radial chromatography (Chromatotron, 1 mm plate, CH2Cl2/MeOH/NH4OH 48:1:1), gave AMD8931 (61 mg, 61%) as a white foam. 1H NMR (300 MHz, CDCl3) δ 1.50–1.71 (m, 1H), 1.75–2.03 (m, 2H), 2.22–2.23 (m, 2H), 2.68–2.89 (m, 2H), 3.68 (br s, 2H), 3.76 (br s, 2H), 3.82 (br s, 1H), 3.87 (br s, 2H), 4.06 (d, 2H, J=16.2 Hz), 7.10–7.42 (m, 13H), 7.59 (dd, 1H, J=7.5, 7.5 Hz), 7.72 (br s, 2H), 8.53 (d, 1H, J=3.6 Hz), 8.63 (br s, 1H); 13C NMR (75.5 MHz, CDCl3) δ 21.29, 23.18, 29.26, 47.99, 53.19, 53.64, 54.48, 59.75, 121.85, 122.12, 122.32, 124.52, 126.12, 128.15, 128.57, 134.67, 136.36, 137.06, 138.29, 138.97, 147.09, 149.23, 157.71, 159.79. ES-MS m/z 515 (M+H). Anal. Calcd. for C33H34N6.0.9H2O: C, 74.66; H, 6.80; N, 15.83. Found: C, 74.53; H, 6.61; N, 15.86.
EXAMPLE: 26




AMD8939: Preparation of N-(2-pyridinylmethyl)-N′-[4-(4-methoxyphenyl)-1H-imidazol-2-ylmethyl]-N′-(5,6,7,8-tetrahydro-8-quinolinyl)-1,4-benzenedimethanamine (free base)
Preparation of 4-(4-Methoxy-phenyl)-1H-imidazole
Reaction of 2-bromo-1-(4-methoxy-phenyl)ethanone (3.0 g, 13.00 mmol), and formamide (3.63 mL, 92.00 mmol), followed by recrystallisation from cold EtOAc gave the title compound (1.4 g, 62%) as a yellow solid. 1H NMR (300 MHz, CDCl3) δ 3.81 (s, 3H), 6.93 (d, 2H, J=8.7 Hz), 7.29 (s, 1H), 7.61 (d, 2H, J=8.7 Hz), 7.68 (s, 1H).
Preparation of 4-(4-Methoxyphenyl)-1-(2-trimethylsilanyl-ethoxymethyl)-1H-imidazole
Reaction of 4-(4-methoxyphenyl)-1H-imidazole (610 mg, 3.51 mmol), NaH (60%, 136 mg, 3.40 mmol), and SEMCl (656 uL, 3.71 mmol) followed by column chromatography on silica gel (hexane/EtOAC 1:1) gave the title compound (654 mg, 64%) as a yellow solid. 1H NMR (300 MHz, CDCl3) major isomer: δ 0.00 (s, 9H), 0.93 (t, 2H, J=7.5 Hz), 3.52 (t, 2H, J=7.5 Hz), 3.83 (s, 3H), 5.28 (s, 2H), 6.94 (d, 2H, J=9.0 Hz), 7.24 (s, 1H), 7.60 (s, 1H), 7.72 (d, 2H, J=9.0 Hz); minor isomer: δ 0.00 (s, 9H), 0.92 (t, 2H, J=7.5 Hz), 3.54 (t, 2H, J=7.5 Hz), 3.85 (s, 3H), 5.23 (s, 2H), 6.98 (d, 2H, J=9.0 Hz), 7.09 (s, 1H), 7.47 (d, 2H, J=9.0 Hz), 7.65 (s, 1H). ES-MS m/z 305 (M+H).
Preparation of 5-(4-Methoxyphenyl)-1-(2-trimethylsilanyl-ethoxymethyl)-1H-imidazole 2-carbaldehyde
Reaction of 4-(4-methoxy-phenyl)-1-(2-trimethylsilanyl-ethoxymethyl)-1H-imidazole (400 mg, 1.32 mmol), 2.5 M n-BuLi (684 uL, 1.71 mmol), and DMF (306 uL, 3.95 mmol) for 2 h at −40° C., followed by column chromatography on silica gel (EtOAc/hexane 9:1), gave the title compound (337 mg, 77%) as a pink oil. 1H NMR (300 MHz, CDCl3) δ 0.00 (s, 9H), 0.94 (t, 2H, J=7.5 Hz), 3.61 (t, 2H, J=7.5 Hz), 3.85 (s, 3H), 5.81 (s, 2H), 6.97 (d, 2H, J=9.0 Hz), 7.56 (s, 1H), 7.75 (d, 2H, J=9.0 Hz), 9.87 (s, 1H).
Preparation of N-(tert-Butoxycarbonyl)-N-(2-pyridinylmethyl)-N′-[4-[4-methoxyphenyl]-1-[(2-trimethylsilyl)ethoxy]methyl-imidazol-2-ylmethyl]-N′-(5,6,7,8-tetrahydro-8-quinolinyl)-1,4-benzenedimethanamine
Reaction of N-(tert-butoxycarbonyl)-N-(2-pyridinylmethyl)-N′-(5,6,7,8-tetrahydro-8-quinolinyl)-1,4-benzenedimethanamine (188 mg, 0.41 mmol), 5-(4-methoxy-phenyl)-1-(2-trimethylsilanyl-ethoxymethyl)-1H-imidazole-2-carbaldehyde (150 mg, 0.45 mmol), and NaBH(OAc)3 (261 mg, 1.23 mmol) for 1 h at room temperature followed by column chromatography on silica gel (CH2Cl2/MeOH/NH4OH 99:1:1) gave the title compound (276 mg, 87%) as a yellow foam. 1H NMR (300 MHz, CDCl3) δ 0.00 (s, 9H), 0.81 (dd, 2H, J=9.0, 9.0 Hz), 1.25–1.40 (m, 1H), 1.57 (s, 9H), 1.96–1.98 (m, 2H), 1.99–2.02 (m, 1H), 2.52–2.70 (m, 2H), 3.34 (dd, 2H, J=12.0, 9.0 Hz), 3.78 (d, 1H, J=15.0 Hz), 3.81 (s, 3H), 3.88 (d, 1H, J=15.0 Hz), 3.96 (d, 2H, J=3 Hz), 4.01–4.05 (m, 1H), 4.39 (br s, 2H), 4.49 (br s, 2H), 5.48 (d, 1H, J=12.0 Hz), 5.77 (d, 1H, J=12.0 Hz), 6.88 (d, 2H, J=9.0 Hz), 7.05–7.15 (m, 6H), 7.30–7.33 (m, 3H), 7.61 (s, 1H), 7.63 (d, 2H, J=9.0 Hz), 8.51–8.55 (m, 2H). ES-MS m/z 775 (M+H).
Using general procedure E: Reaction of N-(tert-butoxycarbonyl)-N-(2-pyridinylmethyl)-N′-[4-[4-methoxy-phenyl]-1-[(2-trimethylsilyl)ethoxy]methyl-imidazol-2-ylmethyl]-N′-(5,6,7,8-tetrahydro-8-quinolinyl)-1,4-benzenedimethanamine (120 mg, 0.16 mmol), and 6N HCl (4.1 mL) for 3 h at 50° C. followed by purification of the crude product by column chromatography on silica gel (CH2Cl2/MeOH/NH4OH 98:1:1) afforded AMD8939 (69 mg, 84%) as a yellow foam. 1H NMR (300 MHz, CDCl3) δ 1.66–1.69 (m, 1H), 1.99–2.05 (m, 2H), 2.20–2.21 (m, 2H), 2.66–2.83 (m, 2H), 3.67 (br s, 2H), 3.75 (br s, 2H), 3.81 (s, 3H), 3.87 (br s, 2H), 4.01 (brs, 1H), 4.07 (brs, 1H), 6.90 (d, 2H, J=6.3 Hz), 7.09–7.40 (m, 9H), 7.55–7.64 (m, 3H), 8.51 (d, 1H, J=4.5 Hz), 8.61 (d, 1H, J=4.5 Hz); 13C NMR (75.5 MHz, CDCl3) δ 21.69, 23.57, 29.66, 48.41, 53.59, 54.06, 54.87, 55.68, 60.12, 114.45, 122.26, 122.50, 122.72, 126.04, 128.55, 128.98, 135.06, 136.77, 137.45, 138.73, 139.33, 147.47, 149.63, 149.85, 158.12, 158.61, 160.17. ES-MS m/z 545 (M+H). Anal. Calcd. for C34H36N6O.1.1H2O: C, 72.34; H, 6.82; N, 14.89. Found: C, 72.31; H, 6.71; N, 14.89.
EXAMPLE: 27




AMD8985: Preparation of N-(2-pyridinylmethyl)-N′-[4-(4-nitrophenyl)-1H-imidazol-2-ylmethyl]-N′-(5,6,7,8-tetrahydro-8-quinolinyl)-1,4-benzenedimethanamine (free base)
Preparation of 4-(4-Nitrophenyl)-1H-imidazole
Reaction of 2-Bromo-1-(4-nitro-phenyl)-ethanone (3.0 g, 12.30 mmol), and formamide (3.1 mL, 77.40 mmol) followed by column chromatography on silica gel (EtOAc/MeOH 49:1) gave the title compound (178 mg, 8%) as a yellow solid. 1H NMR (300 MHz, CDCl3) δ 7.52 (s, 1H), 7.78 (s, 1H), 7.97 (d, 2H, J=9.0 Hz), 8.27 (d, 2H, J=9.0 Hz). ES-MS m/z 190 (M+H).
Preparation of 5-(4-Nitrophenyl)-1-(2-trimethylsilanyl-ethoxymethyl)-1H-imidazole
Reaction of 4-(4-nitrophenyl)-1H-imidazole (160 mg, 0.85 mmol), NaH (60%, 33 mg, 0.82 mmol), and SEMCl (158 uL, 0.89 mmol) followed by column chromatography on silica gel (hexane/EtOAC 3:2) gave the title compound (170 mg, 65%) as a yellow solid. 1H NMR (300 MHz, CDCl3) δ 0.00 (s, 9H), 0.94 (t, 2H, J=7.5 Hz), 3.55 (t, 2H, J=7.5 Hz), 5.33 (s, 2H), 7.50 (s, 1H), 7.69 (s, 1H), 7.94 (d, 2H, J=6.0 Hz), 8.26 (d, 2H, J=6.0 Hz).
Preparation of 4-(4-Nitrophenyl)-1-(2-trimethylsilanyl-ethoxymethyl)-1H-imidazole-2-carbaldehyde
Reaction of 4-(4-nitro-phenyl)-1-(2-trimethylsilanyl-ethoxymethyl)-1H-imidazole (170 mg, 0.53 mmol), 0.53 M LDA (1 mL, 0.53 mmol), and DMF (232 uL, 1.60 mmol) for 4 h at −40° C. followed by column chromatography on silica gel (EtOAc/hexane 9:1) gave the title compound (55 mg, 30%) as a yellow oil. 1H NMR (300 MHz, CDCl3) δ 0.00 (s, 9H), 9.95 (t, 2H, J=9.0 Hz), 3.63 (t, 2H, J=9.0 Hz), 5.82 (s, 2H), 7.79 (s, 1H), 7.98 (d, 2H, J=9.0 Hz), 8.27 (d, 2H, J=9 Hz), 9.89 (s, 1H).
Preparation of N-(tert-Butoxycarbonyl)-N-(2-pyridinylmethyl)-N′-[4-[4-nitrophenyl]-1-[(2-trimethylsilyl)ethoxy]methyl-imidazol-2-ylmethyl]-N′-(5,6,7,8-tetrahydro-8-quinolinyl)-1,4-benzenedimethanamine
Reaction of N-(tert-butoxycarbonyl)-N-(2-pyridinylmethyl)-N′-(5,6,7,8-tetrahydro-8-quinolinyl)-1,4-benzenedimethanamine (87 mg, 0.19 mmol), 5-(4-nitrophenyl)-1-(2-trimethylsilanyl-ethoxymethyl)-1H-imidazole-2-carbaldehyde (55 mg, 0.16 mmol), and NaBH(OAc)3 (121 mg, 0.57 mmol) for 2 h at room temperature followed by purification of the crude product by column chromatography on silica gel (CH2Cl2/MeOH/NH4OH 98:1:1) gave the title compound (57 mg, 45%) as a yellow foam. 1H NMR (300 MHz, CDCl3) δ 0.00 (s, 9H), 0.81–0.90 (m, 2H), 1.26–1.41 (m, 1H), 1.55 (s, 9H), 1.96–1.98 (m, 2H), 1.98–2.04 (m, 1H), 2.52–2.70 (m, 2H), 3.34–3.37 (m, 2H), 3.69 (d, 1H, J=15.0 Hz), 3.85 (d, 1H, J=12.0 Hz), 4.02 (br s, 2H), 4.04–4.06 (m, 1H), 4.37 (br s, 2H), 4.46 (br s, 2H), 5.53 (d, 1H, J=6.0 Hz), 5.76 (d, 1H, J=6.0 Hz), 6.92–7.27 (m, 9H), 7.61–7.63 (m, 1H), 7.84 (d, 2H, J=9.0 Hz), 8.19 (d, 2H, J=9.0 Hz), 8.51–8.53 (m, 2H). ES-MS m/z 790 (M+H).
Using general procedure E: Reaction of N-(tert-butoxycarbonyl)-N-(2-pyridinylmethyl)-N′-[4-[4-nitro-phenyl]-1-[(2-trimethylsilyl)ethoxy]methyl-imidazol-2-ylmethyl]-N′-(5,6,7,8-tetrahydro-8-quinolinyl)-1,4-benzenedimethanamine (57 mg, 0.07 mmol), and 6N HCl (1.9 mL) for 3 h at 50° C. followed by purification of the crude product by column chromatography on silica gel (CH2Cl2/MeOH/NH4OH 48:1:1) gave AMD8939 (31 mg, 77%) as a yellow foam. 1H NMR (300 MHz, acetone-d6) δ 1.68–172. (m, 1H), 2.25–2.28 (m, 2H), 2.69–2.93 (m, 4H), 3.70 (br s, 2H), 3.74 (br s, 2H), 3.78 (br s, 2H), 3.79–3.40 (m, 2H), 4.05 (dd, 1H, J=7.5, 7.5 Hz), 7.15 (dd, 1H, J=6.2, 6.2 Hz), 7.24 (d, 4H, J=7.8 Hz), 7.37 (d, 4H, J=8.1 Hz), 7.53 (d, 1H, J=7.5 Hz), 7.66 (m, 1H), 7.79 (br s, 1H), 7.99 (d, 2H, J=8.7 Hz), 8.17 (d, 1H, J=7.8 Hz), 8.45 (d, 1H, J=4.2 Hz), 8.80 (br s, 1H); 13C NMR (75.5 MHz, acetone-d6) δ 19.90, 22.51, 25.68, 49.37, 53.92, 55.09, 55.43, 61.31, 116.22, 122.89, 123.03, 123.44, 125.12, 125.76, 129.15, 129.74, 136.11, 137.38, 138.48, 139.67, 140.96, 146.77, 148.24, 150.19, 151.35, 159.05, 161.87. ES-MS m/z 560 (M+H). Anal. Calcd. for C33H33N7O2.1.0H2O: C, 68.61; H, 6.11; N, 16.97. Found: C, 68.65; H, 5.99; N, 16.66.
EXAMPLE: 28




AMD8989: Preparation of N-(2-Pyridinylmethyl)-N′-(4-methyl-5-phenyl-1H-imidazol-2-ylmethyl)-N′-(5,6,7,8-tetrahydro-8-quinolinyl)-1,4-benzenedimethanamine (free base)
Preparation of 4-Methyl-5-phenyl-1H-imidazole.
Reaction of 2-bromo-1-phenyl-propan-1-one (3.0 g, 14.00 mmol), and formamide (3.9 mL, 99.00 mmol), followed by recrystallisation from cold EtOAc gave the title compound (1.97 g, 88%) as a yellow solid. 1H NMR (300 MHz, MD3OD) δ 2.40 (s, 3H), 7.28 (t, 1H, J=7.5 Hz), 7.42 (dd, 2H, J=7.5, 7.5 Hz), 7.55 (d, 2H, J=9.0 Hz), 7.76 (s, 1H). ES-MS m/z 159 (M+H).
Preparation of 4-methyl-5-phenyl-1-(2-trimethylsilanyl-ethoxymethyl)-1H-imidazole
Reaction of 4-methyl-5-phenyl-1H-imidazole (400 mg, 2.53 mmol), NaH (60%, 98 mg, 2.46 mmol), and SEMCl (474 uL, 2.68 mmol) followed by column chromatography on silica gel (hexane/EtOAC 3:2) gave the title compound (323 mg, 46%) as a yellow solid. 1H NMR (300 MHz, CDCl3) δ 0.00 (s, 9H), 0.92 (t, 2H, J=7.5 Hz), 2.47 (s, 3H), 3.52 (t, 2H, J=7.5 Hz), 5.26 (s, 2H), 7.26–7.27 (m, 1H), 7.41 (dd, 2H, J=7.5, 7.5 Hz), 7.57 (s, 1H), 7.68 (d, 2H, J=9.0 Hz).
Preparation of 4-Methyl-5-phenyl-1-(2-trimethylsilanyl-ethoxymethyl)-1H-imidazole-2-carbaldehyde
Reaction of 4-methyl-5-phenyl-1-(2-trimethylsilanyl-ethoxymethyl)-1H-imidazole (187 mg, 0.65 mmol), 2.5 M n-BuLi (338 uL, 0.84 mmol), and DMF (151 uL, 1.95 mmol) for 2 h at −40° C. gave the title compound (199 mg, 99%) as a yellow oil. 1H NMR (300 MHz, CDCl3) δ 0.00 (s, 9H), 0.94 (t, 2H, J=7.5 Hz), 2.54 (s, 3H), 3.61 (t, 2H, J=7.5 Hz), 5.88 (s, 2H), 7.33–7.38 (m, 1H), 7.46 (dd, 2H, J=7.5, 7.5 Hz), 7.68 (d, 2H, J=6.0 Hz), 9.82 (s, 1H).
Preparation of 4-Methyl-5-phenyl-1H-imidazole
Reaction of 2-bromo-1-phenyl-propan-1-one (3.0 g, 14.00 mmol), and formamide (3.9 mL, 99.00 mmol), followed by recrystallisation from cold EtOAc gave the title compound (1.97 g, 88%) as a yellow solid. 1H NMR (300 MHz, MD3OD) δ 2.40 (s, 3H), 7.28 (t, 1H, J=7.5 Hz), 7.42 (dd, 2H, J=7.5, 7.5 Hz), 7.55 (d, 2H, J=9.0 Hz), 7.76 (s, 1H). ES-MS m/z 159 (M+H).
Preparation of 4-methyl-5-phenyl-1-(2-trimethylsilanyl-ethoxymethyl)-1H-imidazole
Reaction of 4-methyl-5-phenyl-1H-imidazole (400 mg, 2.53 mmol), NaH (60%, 98 mg, 2.46 mmol), and SEMCl (474 uL, 2.68 mmol) followed by column chromatography on silica gel (hexane/EtOAC 3:2) gave the title compound (323 mg, 46%) as a yellow solid. 1H NMR (300 MHz, CDCl3) δ 0.00 (s, 9H), 0.92 (t, 2H, J=7.5 Hz), 2.47 (s, 3H), 3.52 (t, 2H, J=7.5 Hz), 5.26 (s, 2H), 7.26–7.27 (m, 1H), 7.41 (dd, 2H, J=7.5, 7.5 Hz), 7.57 (s, 1H), 7.68 (d, 2H, J=9.0 Hz).
Preparation of 4-Methyl-5-phenyl-1-(2-trimethylsilanyl-ethoxymethyl)-1H-imidazole-2-carbaldehyde
Reaction of 4-methyl-5-phenyl-1-(2-trimethylsilanyl-ethoxymethyl)-1H-imidazole (187 mg, 0.65 mmol), 2.5 M n-BuLi (338 uL, 0.84 mmol), and DMF (151 uL, 1.95 mmol) for 2 h at −40° C. gave the title compound (199 mg, 99%) as a yellow oil. 1H NMR (300 MHz, CDCl3) δ 0.00 (s, 9H), 0.94 (t, 2H, J=7.5 Hz), 2.54 (s, 3H), 3.61 (t, 2H, J=7.5 Hz), 5.88 (s, 2H), 7.33–7.38 (m, 1H), 7.46 (dd, 2H, J=7.5, 7.5 Hz), 7.68 (d, 2H, J=6.0 Hz), 9.82 (s, 1H).
Preparation of N-(tert-Butoxycarbonyl)-N-(2-pyridinylmethyl)-N′-[4-methyl-5-phenyl-1-[(2-trimethylsilyl)ethoxy]methyl-imidazol-2-ylmethyl]-N′-(5,6,7,8-tetrahydro-8-quinolinyl)-1,4-benzenedimethanamine
Using general procedure B: Reaction of N-(tert-butoxycarbonyl)-N-(2-pyridinylmethyl)-N′-(5,6,7,8-tetrahydro-8-quinolinyl)-1,4-benzenedimethanamine (229 mg, 0.50 mmol), 4-methyl-5-phenyl-1-(2-trimethylsilanyl-ethoxymethyl)-1H-imidazole-2-carbaldehyde (190 mg, 0.60 mmol), and NaBH(OAc)3 (31.8 mg, 1.50 mmol) for 1 h at room temperature followed by purification of the crude product by column chromatography on silica gel (CH2Cl2/MeOH/NH4OH 98:1:1) gave the title compound (108 mg, 28%) as a yellow foam. 1H NMR (300 MHz, CDCl3) δ 0.00 (s, 9H), 0.77 (dd, 2H, J=7.5 Hz), 1.25–1.41 (m 1H), 1.58 (br s, 3H), 1.64 (br s, 3H), 1.68 (br s, 3H), 2.00–2.04 (m, 2H), 2.08–2.18 (m, 1H), 2.24 (s, 3H), 2.63–2.80 (m, 2H), 3.23 (m, 2H), 3.69 (d, 1H, J=15.0 Hz), 3.84 (d, 1H, J=15.0 Hz), 3.97 (m, 2H), 4.04–4.10 (m, 1H), 4.39 (s, 2H), 4.48 (s, 2H), 5.35 (d, 1H, J=9.0 Hz), 5.78 (d, 1H, J=12.0 Hz), 7.06–7.38 (m, 11H), 7.55–7.61 (m, 2H), 7.61–7.64 (m, 1H), 8.51 (d, 1H, J=5.1 Hz), 8.55 (d, 1H, J=3.9 Hz).
Using general procedure E: Reaction of N-(tert-Butoxycarbonyl)-N-(2-pyridinylmethyl)-N′-[4-methyl-5-phenyl-1-[(2-trimethylsilyl)ethoxy]methyl-imidazol-2-ylmethyl]-N′-(5,6,7,8-tetrahydro-8-quinolinyl)-1,4-benzenedimethanamine (108 mg, 0.14 mmol), and 6N HCl (4.0 mL) for 3 h at 50° C. followed by purification of the crude product by column chromatography on silica gel (CH2Cl2/MeOH/NH4OH 48:1:1) gave AMD8989 (57 mg, 76%) as a yellow foam. 1H NMR (300 MHz, CDCl3) δ 1.66–1.70 (m, 1H), 2.00–2.04 (m, 2H), 2.20–2.21 (m, 1H), 2.44 (s, 3H), 2.65–2.83 (m, 2H), 3.67 (br s, 2H), 3.75 (br s, 2H), 3.81 (br s, 1H), 3.87 (br s, 2H), 3.92 (d, 1H, J=16.2 Hz), 4.09–4.14 (m, 1H), 7.10–7.13 (m, 2H), 7.20–7.28 (m, 4H), 7.32–7.39 (m, 6H), 7.58–7.63 (m, 3H), 8.51 (d, 1H, J=4.5 Hz), 8.61 (d, 1H, J=4.5 Hz); 13C NMR (75.5 MHz, CDCl3) δ 21.75, 23.64, 29.68, 48.36, 53.60, 54.02, 54.89, 60.16, 122.26, 122.51, 122.72, 126.02, 126.38, 128.55, 128.95, 135.06, 136.76, 137.42, 138.77, 139.33, 147.40, 147.99, 149.63, 158.15, 160.19. ES-MS m/z 529 (M+H). Anal. Calcd. for C34H36N6.1.4H2O: C, 73.72; H, 7.06; N, 15.17. Found: C, 73.67; H, 6.79; N, 14.98.
EXAMPLE: 29




AMD8990: Preparation of N-(2-Pyridinylmethyl)-N′-(5-tert-butyl-1H-imidazol-2-ylmethyl)-N′-(5,6,7,8-tetrahydro-8-quinolinyl)-1,4-benzenedimethanamine (free base)
Preparation of 5-tert-Butyl-1H-imidazole
Reaction of 1-bromo-3,3-dimethyl-butan-2-one (3.0 g, 16.80 mmol), and formamide (4.7 mL, 117.20 mmol), followed by chromatography (CH2Cl2/MeOH/NH4OH 94:3:3) gave the title compound (450 mg, 21%) as a yellow foam. 1H NMR (300 MHz, CDCl3) δ 1.29 (s, 9H), 6.77 (s, 1H), 7.57, (s, 1H). ES-MS m/z 125 (M+H).
Preparation of 5-tert-Butyl-1-(2-trimethylsilanyl-ethoxymethyl)-1H-imidazole
Reaction of 5-tert-butyl-1H-imidazole (423 mg, 3.41 mmol), NaH (60%, 132 mg, 3.31 mmol), and SEMCl (639 uL, 3.61 mmol) followed by column chromatography on silica gel (hexane/EtOAC 3:2) gave the title compound (500 mg, 57%) as a yellow oil. 1H NMR (300 MHz, CDCl3) δ major isomer: 0.00 (s, 9H), 0.89 (t, 2H, J=7.5 Hz), 1.29 (s, 9H), 3.47 (t, 2H, J=7.5 Hz), 5.19 (s, 2H), 6.73 (s, 1H), 7.50 (s, 1H).
Preparation of 5-tert-Butyl-1-(2-trimethylsilanyl-ethoxymethyl)-1H-imidazole-2-carbaldehyde
Reaction 5-tert-butyl-1-(2-trimethylsilanyl-ethoxymethyl)-1H-imidazole (276 mg, 1.09 mmol), 2.5 M n-BuLi (567 uL, 1.42 mmol), and DMF (253 uL, 3.27 mmol) for 2 h at −40° C. gave the title compound (304 mg, 99%) as a yellow solid. 1H NMR (300 MHz, CDCl3) δ 0.00 (s, 9H), 0.91 (t, 2H, J=9.0 Hz), 1.33 (s, 9H), 3.57 (t, 2H, J=7.5 Hz), 5.72 (s, 2H), 7.10 (s, 1H), 9.80 (s, 1H).
Preparation of N-(tert-Butoxycarbonyl)-N-(2-pyridinylmethyl)-N′-[5-tert-butyl-1-[(2-trimethylsilyl)ethoxy]methyl-imidazol-2-ylmethyl]-N′-(5,6,7,8-tetrahydro-8-quinolinyl)-1,4-benzenedimethanamine
Using general procedure B: Reaction of N-(tert-butoxycarbonyl)-N-(2-pyridinylmethyl)-N′-(5,6,7,8-tetrahydro-8-quinolinyl)-1,4-benzenedimethanamine (271 mg, 0.59 mmol), 5-tert-butyl-1-(2-trimethylsilanyl-ethoxymethyl)-1H-imidazole-2-carbaldehyde (200 mg, 0.71 mmol), and NaBH(OAc)3 (375 mg, 1.77 mmol) for 1 h at room temperature followed by purification of the crude product by column chromatography on silica gel (CH2Cl2/MeOH/NH4OH 98:1:1) gave the title compound (265 mg, 62%) as a yellow foam. 1H NMR (300 MHz, CDCl3) δ 0.00 (s, 9H), 0.80 (dd, 2H, J=9.0, 9.0 Hz), 1.21 (br s, 5H), 1.25 (br s, 4H), 1.41 (br s, 5H), 1.49 (br s, 4H), 1.91–1.95 (m, 2H), 2.01–2.10 (m, 1H), 2.62–2.82 (m, 2H), 3.28–3.33 (m, 2H), 3.53 (d, 1H, J=14.4 Hz), 3.79–4.00 (m, 3H), 4.40 (s, 2H), 4.48 (s, 2H), 5.27 (s, 2H), 5.41 (d, 1H, J=10.8 Hz), 5.66 (d, 1H, J=10.8 Hz), 7.01–7.05 (m, 1H), 7.11–7.15 (m, 3H), 7.23–7.26 (m, 3H), 7.30–7.33 (m, 2H), 7.62 (dd, 1H, J=7.8, 7.8 Hz), 8.52 (br s, 2H).
Using general procedure E: Reaction of N-(tert-butoxycarbonyl)-N-(2-pyridinylmethyl)-N′-[5-tert-butyl-1-[(2-trimethylsilyl)ethoxy]methyl-imidazol-2-ylmethyl]-N′-(5,6,7,8-tetrahydro-8-quinolinyl)-1,4-benzenedimethanamine (260 mg, 0.36 mmol), and 6N HCl (10.0 mL) for 3 h at 50° C. followed by purification of the crude product by column chromatography on silica gel (CH2Cl2/MeOH/NH4OH 98:1:1) gave AMD8990 (97 mg, 55%) as a white foam. 1H NMR (300 MHz, CDCl3) δ 1.25 (s, 3H), 1.29 (s, 3H), 1.34 (s, 3H), 1.71 (br s, 1H), 1.97–2.00 (m, 3H), 2.17–2.21 (m, 1H), 2.73–2.83 (m, 2H), 3.33–3.69 (m, 3H), 3.77 (br s, 2H), 3.92 (br s, 2H), 3.94–4.04 (m, 2H), 6.59 (br s, 1H), 6.70 (br s, 1H), 7.11–7.15 (m, 2H), 7.19–7.22 (m, 2H), 7.30–7.34 (m, 4H), 7.58–7.62 (m, 1H), 8.54 (d, 1H, J=3.0 Hz), 8.59 (br s, 1H); 13C NMR (75.5 MHz, CDCl3) δ 21.68, 23.51, 29.68, 30.68 (3C), 48.46, 53.65, 54.15, 54.93, 60.01, 122.26, 122.36, 122.72, 128.47, 128.94, 134.96, 136.76, 137.30, 138.94, 139.24, 147.55, 148.52, 149.65, 158.25, 160.20. ES-MS m/z 495 (M+H). Anal. Calcd. for C31H38N6.1.0H2O: C, 72.62; H, 7.86; N, 16.39. Found: C, 72.78; H, 7.77; N, 16.10.
EXAMPLE: 30




AMD8999: Preparation of N-(2-Pyridinylmethyl)-N′-[5-(3-methoxyphenyl)-1H-imidazol-2-ylmethyl]-N′-(5,6,7,8-tetrahydro-8-quinolinyl)-1,4-benzenedimethanamine (free base)
Preparation of 2-Bromo-1-(3-methoxy-phenyl)-ethanone
Reaction of 1-(3-methoxy-phenyl)-ethanone (5.0 g, 33.30 mmol), acetic acid (1.9 mL, 33.30 mmol), and bromine (1.9 mL, 38.30 mmol) followed by recrystallisation from cold EtOAc/Hexane gave the title compound (2.5 g, 33%) as a yellow powder. 1H NMR (300 MHz, CDCl3) δ 3.87 (s, 3H), 4.46 (s, 2H), 7.16 (d, 1H, J=8.4 Hz), 7.63 (dd, 1H, J=8.1, 8.1 Hz), 7.52 (s, 1H), 7.56 (d, 1H, J=7.5 Hz).
Preparation of 5-(3-Methoxy-phenyl)-1H-imidazole
Reaction of 2-bromo-1-(3-methoxy-phenyl)-ethanone (2.5 g, 10.90 mmol), and formamide (3.1 mL, 76.40 mmol), followed by chromatography (CH2Cl2/MeOH/NH4OH 48:1:1) gave the title compound (820 mg, 43%) as a white solid. 1H NMR (300 MHz, CD3OD) δ 3.83 (s, 3H), 6.78–6.82 (m, 1H), 7.26–7.28 (m, 3H), 7.42 (s, 1H), 7.72 (s, 1H).
Preparation of 5-(3-Methoxy-phenyl)-1-(2-trimethylsilanyl-ethoxymethyl)-1H-imidazole
Reaction of 5-(3-methoxy-phenyl)-1H-imidazole (500 mg, 2.87 mmol), NaH (60%, 112 mg, 2.79 mmol), and SEMCl (598 uL, 3.35 mmol) followed by column chromatography on silica gel (hexane/EtOAC 3:2) gave the title compound (505 mg, 60%) as a brown oil. 1H NMR (300 MHz, CDCl3) δ 0.00 (s, 9H), 0.93 (t, 2H, J=7.5 Hz), 3.52 (t, 2H, J=9.0 Hz), 3.87 (s, 3H), 5.30 (s, 2H), 6.80–6.83 (m, 1H), 7.26–7.39 (m, 3H), 7.40 (s, 1H), 7.63 (s, 1H).
Preparation of 5-(3-Methoxy-phenyl)-1-(2-trimethylsilanyl-ethoxymethyl)-1H-imidazole-2-carbaldehyde
Reaction of 5-(3-methoxy-phenyl)-1-(2-trimethylsilanyl-ethoxymethyl)-1H-imidazole (470 mg, 1.55 mmol), 2.5 M n-BuLi (800 uL, 2.00 mmol), and DMF (479 uL, 6.18 mmol) for 2 h at −40° C. followed by column chromatography on silica gel (EtOAc/hexane 9:1) gave the title compound (111 mg, 22%) as a yellow oil. 1H NMR (300 MHz, CDCl3) δ 0.00 (s, 9H), 0.95 (t, 2H, J=9.0 Hz), 3.61 (t, 2H, J=9.0 Hz), 3.89 (s, 3H), 5.8 s (s, 2H), 6.90 (d, 2H, J=9.0 Hz), 7.34–7.42 (m, 3H), 9.89 (s, 1H).
Preparation of N-(tert-Butoxycarbonyl)-N-(2-pyridinylmethyl)-N′-[5-[3-methoxyphenyl]-1-[(2-trimethylsilyl)ethoxy]methyl-imidazol-2-ylmethyl]-N′-(5,6,7,8-tetrahydro-8-quinolinyl)-1,4-benzenedimethanamine
Using general procedure B: Reaction of N-(tert-butoxycarbonyl)-N-(2-pyridinylmethyl)-N′-(5,6,7,8-tetrahydro-8-quinolinyl)-1,4-benzenedimethanamine (166 mg, 0.36 mmol), 5-(3-methoxyphenyl)-1-(2-trimethylsilanyl-ethoxymethyl)-1H-imidazole-2-carbaldehyde (100 mg, 0.30 mmol), and NaBH(OAc)3 (191 mg, 0.90 mmol) for 1 h at room temperature followed by purification of the crude product by column chromatography on silica gel (CH2Cl2/MeOH/NH4OH 198:1:1) gave the title compound (156 mg, 67%) as a yellow foam. 1H NMR (300 MHz, CDCl3) δ 0.00 (s, 9H), 0.82 (dd, 2H, J=10.5, 7.5 Hz), 1.24–1.25 (m, 1H), 1.45 (d, 9H), 1.90–2.08 (m, 2H), 2.11–2.18 (m, 1H), 2.63–2.83 (m, 2H), 3.30–3.37 (m, 2H), 3.67 (d, 1H, J=14.4 Hz), 3.84 (s, 3H), 3.91–3.92 (m, 1H), 3.97 (br s, 2H), 4.02–4.04 (m, 1H), 4.39 (br s, 2H), 4.49 (br s, 2H), 5.49 (d, 1H, J=10.8 Hz), 5.78 (d, 1H, J=9.0 Hz), 6.74–6.78 (m, 1H), 7.05–7.34 (m, 12H), 7.61 (ddd, 1H, J=7.8, 7.8, 1.6 Hz), 8.45–8.56 (m, 2H).
Using general procedure E: Reaction of N-(tert-butoxycarbonyl)-N-(2-pyridinylmethyl)-N′-[5-[3-methoxy-phenyl]-1-[(2-trimethylsilyl)ethoxy]methyl-imidazol-2-ylmethyl]-N′-(5,6,7,8-tetrahydro-8-quinolinyl)-1,4-benzenedimethanamine (156 mg, 0.20 mmol), and 6N HCl (5.7 mL) for 3 h at 50° C. followed by purification of the crude product by column chromatography on silica gel (CH2Cl2/MeOH/NH4OH 48:1:1) gave AMD8999 (103 mg, 94%) as a yellow foam. 1H NMR (300 MHz, CD3COCD3) δ 1.67–1.71 (m, 1H), 2.23–2.24 (m, 2H), 2.69–2.74 (m, 2H), 2.85–2.88 (m, 2H), 3.68–3.79 (m, 7H), 3.80 (s, 3H), 3.94 (d, 1H, J=15.0 Hz), 4.02–4.07 (m, 1H), 6.72 (d, 1H, J=6.9 Hz), 7.21–7.44 (m, 12H), 7.52 (d, 1H, J=9.0 Hz), 7.66 (ddd, 1H, J=7.5, 7.5, 1.5 Hz), 8.45 (d, 1H, J=4.5 Hz), 8.67 (br s, 1H); 13C NMR (75.5 MHz, CD3COCD3) δ 22.50, 25.44, 49.36, 53.98, 55.00, 55.50, 61.10, 110.92, 112.64, 117.91, 122.89, 123.04, 123.41, 129.14, 129.74, 130.62, 136.10, 137.39, 138.41, 139.81, 140.92, 148.28, 150.19, 159.16, 161.37, 161.90. ES-MS m/z 545 (M+H). Anal. Calcd. for C34H36N6O.0.9H2O: C, 72.81; H, 6.79; N, 14.98. Found: C, 71.81; H, 6.79; N, 14.83.
EXAMPLE: 31




AMD9321: Preparation of N-(2-Pyridinylmethyl)-N′-(4-(4-biphenyl)-1H-imidazol-2-ylmethyl)-N′-(5,6,7,8-tetrahydro-8-quinolinyl)-1,4-benzenedimethanamine (free base)
Preparation of 4-(4-Biphenyl)-1H-imidazole
Reaction of 1-(4-biphenyl)-2-bromo-ethanone (3.0 g, 10.90 mmol), and formamide (3.1 mL, 76.30 mmol), followed by recrystallisation from cold EtOAc gave the title compound (1.4 g, 59%) as a yellow solid. 1H NMR (300 MHz, CD3OD) δ 7.32–7.34 (m, 1H), 7.41–7.47 (m, 3H), 7.62–7.65 (m, 4H), 7.76–7.79 (m, 3H). ES-MS m/z 221 (M+H).
Preparation of 4-(4-Biphenyl)-1-(2-trimethylsilanyl-ethoxymethyl)-1H-imidazole
Reaction of 4-(4-biphenyl)-1H-imidazole (400 mg, 1.82 mmol), NaH (60%, 71 mg, 1.77 mmol), and SEMCl (341 uL, 1.92 mmol) followed by column chromatography on silica gel (hexane/EtOAC 3:2) gave the title compound (358 mg, 58%) as a yellow solid. 1H NMR (300 MHz, CDCl3) δ 0.00 (s, 9H), 0.94 (t, 2H, J=8.3 Hz), 3.54 (t, 2H, J=8.1 Hz), 5.31 (s, 2H), 7.26 (s, 1H), 7.27–7.38 (m, 2H), 7.45 (dd, 2H, J=7.5, 7.5 Hz), 7.64 (d, 4H, J=8.1 Hz), 7.87 (d, 2H, J=8.1 Hz).
Preparation of 5-(4-Biphenyl)-1-(2-trimethylsilanyl-ethoxymethyl)-1H-imidazole-2-carbaldehyde
Reaction of 5-(4-biphenyl)-1-(2-trimethylsilanyl-ethoxymethyl)-1H-imidazole (282 mg, 0.81 mmol), 2.5 M n-BuLi (420 uL, 1.05 mmol), and DMF (249 uL, 3.22 mmol) for 2 h at −40° C. followed by column chromatography on silica gel (EtOAc/hexane 9:1) gave the title compound (192 mg, 63%) as a yellow solid. 1H NMR (300 MHz, CDCl3) δ 0.00 (s, 9H), 0.96 (t, 2H, J=7.5 Hz), 3.63 (t, 2H, J=7.5 Hz), 5.84 (s, 2H), 7.26–7.36 (m, 1H), 7.44–7.49 (m, 2H), 7.64–7.69 (m, 5H), 7.92 (d, 2H, J=9.0 Hz), 9.91 (s, 1H).
Preparation of N-(tert-Butoxycarbonyl)-N-(2-pyridinylmethyl)-N′-[5-(4-Biphenyl)-1-[(2-trimethylsilyl)ethoxy]methyl-imidazol-2-ylmethyl]-N′-(5,6,7,8-tetrahydro-8-quinolinyl)-1,4-benzenedimethanamine
Using general procedure B: Reaction of N-(tert-butoxycarbonyl)-N-(2-pyridinylmethyl)-N′-(5,6,7,8-tetrahydro-8-quinolinyl)-1,4-benzenedimethanamine (194 mg, 0.42 mmol), 5-(4-biphenyl)-1-(2-trimethylsilanyl-ethoxymethyl)-1H-imidazole-2-carbaldehyde (192 mg, 0.51 mmol), and NaBH(OAc)3 (267 mg, 1.26 mmol) for 2 h at room temperature followed by purification of the crude product by column chromatography on silica gel (CH2Cl2/MeOH/NH4OH 198:1:1) gave the title compound (267 mg, 77%) as a yellow foam. 1H NMR (300 MHz, CDCl3) δ 0.00 (s, 9H), 0.82 (dd, 2H, J=7.5, 7.5 Hz), 1.22–1.25 (m, 1H), 1.44 (d, 9H), 1.93–2.00 (m, 2H), 2.14–2.18 (m, 1H), 3.32–3.39 (m, 2H), 3.69 (d, 1H, J=14.4 Hz), 3.99 (d, 1H, J=14.4 Hz), 3.99 (d, 2H, J=4.2 Hz), 4.03–4.09 (m, 1H), 4.39 (br s, 2H), 4.49 (brs, 2H), 5.51 (d, 1H, J=9.0 Hz), 5.80 (d, 1H, J=9.0 Hz), 7.04–7.34 (m, 10H), 7.43 (dd, 2H, J=7.5, 7.5 Hz), 7.57–7.63 (m, 5H), 7.78 (d, 2H, J=8.4 Hz), 8.51 (d, 1H, J=3.9 Hz), 8.55 (d, 1H, J=4.2 Hz). ES-MS m/z 821 (M+H).
Using general procedure E: Reaction of N-(tert-butoxycarbonyl)-N-(2-pyridinylmethyl)-N′-[5-(4-Biphenyl)-1-[(2-trimethylsilyl)ethoxy]methyl-imidazol-2-ylmethyl]-N′-(5,6,7,8-tetrahydro-8-quinolinyl)-1,4-benzenedimethanamine (250 mg, 0.31 mmol), and 6N HCl (8.6 mL) for 3 h at 50° C. followed by purification of the crude product by column chromatography on silica gel (CH2Cl2/MeOH/NH4OH 48:1:1) gave AMD9321 (89 mg, 49%) as a yellow foam. 1H NMR (300 MHz, CD3COCD3) δ 1.60–1.69 (m, 1H), 2.04–2.22 (m, 1H), 2.68–2.91 (m, 4H), 3.71 (br s, 2H), 3.73 (br s, 2H), 3.81–3.85 (m, 4H), 3.93–4.06 (m, 2H), 7.17–7.88 (m, 20H), 8.50 (br s, 1H), 8.75 (br s, 1H); 13C NMR (75.5 MHz, CD3COCD3) δ 22.54, 25.67, 49.48, 54.04, 54.72, 55.13, 55.54, 61.10, 113.05, 122.90, 123.05, 123.36, 125.50, 126.13, 127.77, 127.98, 128.20, 128.70, 129.15, 129.76, 130.07, 136.03, 136.31, 137.40, 138.37; 139.84, 140.92, 141.77, 148.25, 150.20, 159.16, 161.92. ES-MS m/z 591 (M+H). Anal. Calcd. for C39H38N6.0.9H2O: C, 77.17; H, 6.61; N, 13.85. Found: C, 77.16; H, 6.62; N, 13.75.
EXAMPLE: 32




AMD9335: Preparation of N-(2-Pyridinylmethyl)-N′-[5-(5,6,7,8-tetrahydronaphthalen-2-yl)-1H-imidazol-2-ylmethyl]-N′-(5,6,7,8-tetrahydro-8-quinolinyl)-1,4-benzenedimethanamine (free base)
Preparation of 2-Bromo-1-(3-methoxy-phenyl)-ethanone
Reaction of 1-(5,6,7,8-tetrahydro-naphthalen-2-yl)-ethanone (5 g, 28.70 mmol), acetic acid (1.6 mL, 28.70 mmol), and bromine (1.7 mL, 33.00 mmol) followed by recrystallisation from cold EtOAc/Hexane gave the title compound (1.9 g, 26%) as a yellow powder. 1H NMR (300 MHz, CD3OD) δ 1.84 (t, 4H, J=6.6 Hz), 2.80–2.85 (m, 4H), 4.61 (s, 2H), 7.19 (d, 1H, J=8.7 Hz), 7.70–7.78 (m, 2H). ES-MS m/z 253 (M+H).
Preparation of 5-(5,6,7,8-Tetrahydro-naphthalen-2-yl)-1H-imidazole
Reaction of 2-bromo-1-(5,6,7,8-tetrahydro-naphthalen-2-yl)-ethanone (1.9 g, 7.6 mmol), and formamide (2.1 mL, 53 mmol), followed by chromatography (CH2Cl2/MeOH 19:1) gave the title compound (603 mg, 42%) as a brown foam. 1H NMR (300 MHz, CD3OD) 1H NMR (300 MHz, CD3OD) δ 1.80–1.84 (m, 4H), 2.76–2.80 (m, 4H), 7.03 (d, 1H, J=8.4 Hz), 7.32 (s, 1H), 7.37 (br s, 2H), 7.68 (s, 1H).
Preparation of 5-(5,6,7,8-Tetrahydro-naphthalen-2-yl)-1-(2-trimethylsilanyl ethoxymethyl)-1H-imidazole
Reaction of 5-(5,6,7,8-tetrahydro-naphthalen-2-yl)-1H-imidazole (387 mg, 1.95 mmol), NaH (60%, 76 mg, 1.89 mmol), and SEMCl (474 uL, 2.28 mmol) followed by column chromatography on silica gel (hexane/EtOAC 3:2) gave the title compound (321 mg, 52%) as a brown oil. 1H NMR (300 MHz, CDCl3) δ 0.00 (s, 9H), 0.92 (t, 2H, J=9.0 Hz), 1.80–1.83 (m, 4H), 2.77–2.81 (m, 4H), 3.51 (t, 2H, J=9.0 Hz), 5.28 (s, 2H), 7.08 (d, 1H, J=9.0 Hz), 7.29 (s, 1H), 7.48 (d, 1H, J=6.0 Hz), 7.54 (s, 1H), 7.61 (s, 1H).
Preparation of 5-(5,6,7,8-Tetrahydro-naphthalen-2-yl)-1-(2-trimethylsilanyl-ethoxymethyl)-1H-imidazole-2-carbaldehyde
Reaction of 5-(5,6,7,8-tetrahydro-naphthalen-2-yl)-1-(2-trimethylsilanyl ethoxymethyl)-1H-imidazole (268 mg, 0.82 mmol), 2.5 M n-BuLi (424 uL, 1.06 mmol), and DMF (253 uL, 3.27 mmol) for 2 h at −40° C. followed by column chromatography on silica gel (EtOAc/hexane 9:1) gave the title compound (166 mg, 57%) as a yellow oil. 1H NMR (300 MHz, CDCl3) δ 0.00 (s, 9H), 0.94 (t, 2H, J=7.5 Hz), 1.80–1.85 (m, 4H), 2.80–2.83 (m, 4H), 3.60 (t, 2H, J=9.0 Hz), 5.81 (s, 2H), 7.13 (d, 1H, J=6.0 Hz), 7.51 (d, 1H, J=6.0 Hz), 7.57 (s, 1H), 7.60 (s, 1H). 9.88 (s, 1H).
Preparation of N-(tert-Butoxycarbonyl)-N-(2-pyridinylmethyl)-N′-[5-(5,6,7,8-tetrahydro-naphthalen-2-yl)-1-[(2-trimethylsilyl)ethoxy]methyl-imidazol-2-ylmethyl]-N′-(5,6,7,8-tetrahydro-8-quinolinyl)-1,4-benzenedimethanamine
Reaction of N-(tert-butoxycarbonyl)-N-(2-pyridinylmethyl)-N′-(5,6,7,8-tetrahydro-8-quinolinyl)-1,4-benzenedimethanamine (178 mg, 0.39 mmol), 5-(5,6,7,8-tetrahydro-naphthalen-2-yl)-1-(2-trimethylsilanyl-ethoxymethyl)-1H-imidazole-2-carbaldehyde (166 mg, 0.47 mmol), and NaBH(OAc)3 (247 mg, 1.16 mmol) for 1 h at room temperature followed by purification of the crude product by column chromatography on silica gel (CH2Cl2/MeOH/NH4OH 98:1:1) gave the title compound (230 mg, 74%) as a yellow foam. 1H NMR (300 MHz, CDCl3) δ 0.00 (s, 9H), 0.81 (dd, 2H, J=7.5, 7.5 Hz), 1.25–1.30 (m, 1H), 1.41 (s, 3H), 1.48 (s, 3H), 1.57 (s, 3H), 1.60–1.78 (m, 4H), 1.95–1.98 (m, 3H), 2.68–2.78 (m, 6H), 3.29–3.33 (m, 2H), 3.67 (d, 1H, J=15.0 Hz), 3.89 (d, 1H, J=9.0 Hz), 3.96 (d, 2H, J=9.0 Hz), 3.97–4.01 m, 1H), 4.39 (brs, 1H), 4.49 (br s, 2H), 5.48 (d, 1H, J=12.0 Hz), 5.80 (d, 1H, J=9.0 Hz), 7.00–7.15 (m, 7H), 7.30–7.34 (m, 4H), 7.46 (s, 1H), 7.61 (ddd, 1H, J=7.65, 7.65, 1.5 Hz), 8.51–8.54 (m, 2H). ES-MS m/z 799 (M+H).
Using general procedure E: Reaction of N-(tert-butoxycarbonyl)-N-(2-pyridinylmethyl)-N′-[5-(5,6,7,8-tetrahydro-naphthalen-2-yl)-1-[(2-trimethylsilyl)ethoxy]methyl-imidazol-2-ylmethyl]-N′-(5,6,7,8-tetrahydro-8-quinolinyl)-1,4-benzenedimethanamine (230 mg, 0.29 mmol), and 6N HCl (8.0 mL) for 3 h at 50° C. followed by purification of the crude product by column chromatography on silica gel (CH2Cl2/MeOH/NH4OH 48:1:1) gave AMD9335 (144 mg, 87%) as a yellow foam. 1H NMR (300 MHz, CD3COCD3) δ 1.62–1.75 (m, 1H), 1.95–1.99 (m, 5H), 2.03–2.07 (m, 2H), 2.69–2.74 (m, 7H), 3.71 (br s, 2H), 3.72–3.77 (m, 3H), 3.80 (br s, 2H), 3.94 (d, 1H, J=15.9 Hz), 4.02–4.06 (m, 1H), 6.99 (d, 1H, J=9.0 Hz), 7.19–7.21 (m, 1H), 7.24–7.39 (m, 3H), 7.44–7.50 (m, 8H), 7.64 (ddd, 1H, J=7.8, 7.8, 1.5 Hz), 8.45 (d, 1H, J=4.2 Hz), 8.67 (d, 1H, J=3 Hz); 13C NMR (75.5 MHz, CD3COCD3) δ 22.52, 24.51, 25.28, 49.40, 53.94, 55.00, 55.43, 61.08, 122.93, 123.07, 123.42, 125.98, 129.16, 129.75, 130.42, 132.67, 135.77, 136.12, 137.41, 138.00, 138.42, 139.85, 140.80, 148.29, 149.81, 150.20, 159.16, 161.81. ES-MS m/z 569 (M+H). Anal. Calcd. for C37H40N6.1.0H2O: C, 75.74; H, 7.21; N, 14.32. Found: C, 75.68; H, 6.96; N, 14.08.
EXAMPLE: 33




AMD9340: Preparation of N-(2-Pyridinylmethyl)-N′-[5-(3-Bromo-2-methoxy-phenyl)-1H-imidazol-2-ylmethyl]-N′-(5,6,7,8-tetrahydro-8-quinolinyl)-1,4-benzenedimethanamine (free base)
Preparation of 2-Bromo-1-(3-bromo-2-methoxy-phenyl)-ethanone
Reaction of 1-(2-methoxy-phenyl)-ethanone (5 g, 33 mmol), acetic acid (1.9 mL, 33 mmol), and bromine (1.97 mL, 38 mmol) followed by recrystallisation from cold EtOAc/Hexane gave the title compound (1.5 g, 25%) as a yellow powder. 1H NMR (300 MHz, CDCl3) δ 3.95 (s, 3H), 4.56 (s, 2H), 6.90 (d, 1H, J=8.7 Hz), 7.60 (dd, 1H, J=6.6, 2.4 Hz), 7.93 (d, 1H, J=2.4 Hz).
Preparation of 5-(3-Bromo-2-methoxy-phenyl)-1H-imidazole
Reaction of 2-bromo-1-(3-bromo-2-methoxy-phenyl)-ethanone (1.50 g, 4.87 mmol), and formamide (1.35 mL, 3.41 mmol), followed recrystallisation from cold EtOAc/Hexane gave the title compound (532 mg, 43%) as a white solid. 1H NMR (300 MHz, CD3OD) δ 3.92 (s, 3H), 6.97 (d, 1H, J=8.7 Hz), 7.31 (dd, 1H, J=8.7, 2.4 Hz), 7.58 (s, 1H), 7.71 (s, 1H), 8.02 (d, 1H, J=2.1 Hz).
Preparation of 5-(3-Bromo-2-methoxy-phenyl)-1-(2-trimethylsilanyl-ethoxymethyl)-1H-imidazole
Reaction of 5-(3-bromo-2-methoxy-phenyl)-1H-imidazole (539 mg, 3.10 mmol), NaH (60%, 120 mg, 3.00 mmol), and SEMCl (751 uL, 3.61 mmol) followed by column chromatography on silica gel (hexane/EtOAC 3:2) gave the title compound (485 mg, 60%) as a brown oil. 1H NMR (300 MHz, CDCl3) δ 0.00 (s, 9H), 0.93 (t, 2H, J=7.5 Hz), 3.52 (t, 2H, J=7.5 Hz), 3.93 (s, 3H), 5.31 (s, 2H), 6.82 (d, 1H, J=6.0 Hz), 7.31 (dd, 1H, J=9.0, 3.0 Hz), 7.63 (s, 1H), 7.66 (s, 1H), 8.36 (d, 1H, J=2.1 Hz). ES-MS m/z 385 (M+H).
Preparation of 5-(3-Bromo-2-methoxy-phenyl)-1-(2-trimethylsilanyl-ethoxymethyl)-1H-imidazole-2-carbaldehyde
Reaction 5-(3-bromo-2-methoxy-phenyl)-1-(2-trimethylsilanyl-ethoxymethyl)-1H-imidazole (485 mg, 1.26 mmol), 2.5 M n-BuLi (828 uL, 2.07 mmol), and DMF (494 uL, 6.38 mmol) for 2 h at −40° C. followed by column chromatography on silica gel (EtOAc/hexane 9:1) gave the title compound (240 mg, 47%) as a yellow oil. 1H NMR (300 MHz, CDCl3) δ 0.00 (s, 9H), 0.94 (t, 2H, J=9.0 Hz), 3.61 (t, 2H, J=7.5 Hz), 3.93 (s, 3H), 5.83 (s, 2H), 6.86 (d, 1H, J=9.0 Hz), 7.38 (dd, 1H, J=9.0, 3.0 Hz), 7.94 (s, 1H), 8.38 (d, 1H, J=3.0 Hz), 9.89 (s, 1H). ES-MS m/z 413 (M+H).
Preparation of N-(tert-Butoxycarbonyl)-N-(2-pyridinylmethyl)-N′-[5-(3-Bromo-2-methoxy-phenyl)-1-[(2-trimethylsilyl)ethoxy]methyl-imidazol-2-ylmethyl]-N′-(5,6,7,8-tetrahydro-8-quinolinyl)-1,4-benzenedimethanamine
Using general procedure B: Reaction of N-(tert-butoxycarbonyl)-N-(2-pyridinylmethyl)-N′-(5,6,7,8-tetrahydro-8-quinolinyl)-1,4-benzenedimethanamine (193 mg, 0.42 mmol), 5-(3-bromo-2-methoxy-phenyl)-1-(2-trimethylsilanyl-ethoxymethyl)-1H-imidazole-2-carbaldehyde (190 mg, 0.46 mmol), and NaBH(OAc)3 (267 mg, 1.26 mmol) for 1.5 h at room temperature followed by purification of the crude product by column chromatography on silica gel (CH2Cl2/MeOH/NH4OH 98:1:1) gave the title compound (171 mg, 48%) as a yellow foam. 1H NMR (300 MHz, CDCl3) δ 0.00 (s, 9H), 0.81 (dd, 2H, J=10.5, 7.5 Hz), 1.45 (d, 9H), 1.61–1.76 (m, 1H), 1.89–2.13 (m, 3H), 2.63–2.83 (m, 2H), 3.30–3.34 (m, 2H), 3.68 (d, 1H, J=14.1 Hz), 3.87 (s, 3H), 3.90–3.92 (m, 1H), 3.96 (br s, 2H), 4.02 (dd, 1H, J-=9.8, 6.5 Hz), 4.39 (br s, 2H), 4.49 (br s, 2H), 5.52 (d, 1H, J=9.0 Hz), 6.76 (d, 1H, J=8.7 Hz), 6.76 (d, 1H, J=8.7 Hz), 7.11–7.32 (m, 9H), 7.50 (s, 1H), 7.60 (ddd, 1H, J=7.5, 7.5, 1.8 Hz), 8.28 (d, 1H, J=2.4 Hz), 8.50 (d, 1H, J=4.5 Hz), 8.55 (d, 1H, J=5.7 Hz).
Using general procedure E: Reaction of N-(tert-butoxycarbonyl)-N-(2-pyridinylmethyl)-N′-[5-(3-Bromo-2-methoxy-phenyl)-1-[(2-trimethylsilyl)ethoxy]methyl-imidazol-2-ylmethyl]-N′-(5,6,7,8-tetrahydro-8-quinolinyl)-1,4-benzenedimethanamine (170 mg, 0.20 mmol), and 6N HCl (6.0 mL) for 3 h at 50° C. followed by purification of the crude product by column chromatography on silica gel (CH2Cl2/MeOH/NH4OH 48:1:1) gave AMD9340 (112 mg, 90%) as a white foam. 1H NMR (300 MHz, CD3COCD3) δ 1.64–1.71 (m, 1H), 1.96–2.06 (m, 2H), 2.20–2.24 (m, 1H), 2.66–2.91 (m, 3H), 3.72 (br s, 2H), 3.78 (br s, 2H), 3.80 (s, 3H), 3.89 (brs, 1H), 3.94 (brs, 3H), 4.01 (dd, 1H, J=8.9, 6.5 Hz), 6.95 (d, 1H, J=8.7 Hz), 7.18–7.25 (m, 6H), 7.36–7.41 (m, 3H), 7.48 (d, 1H, J=7.5 Hz), 7.62–7.65 (m, 2H), 8.26 (br s, 1H), 8.45 (d, 1H, J=4.2 Hz), 8.66 (d, 1H, J=3.9 Hz); 13C NMR (75.5 MHz, CD3COCD3) δ 22.51, 25.38, 49.33, 53.98, 55.06, 55.48, 56.40, 61.06, 113.88, 114.19, 122.89, 123.05, 123.36, 129.15, 129.73, 136.04, 137.39, 138.38, 139.80, 140.89, 148.31, 149.26, 150.19, 156.19, 159.11, 161.88. ES-MS m/z 625 (M+H). Anal. Calcd. for C34H35N6OBr.0.3H2O: C, 64.92; H, 5.70; N, 13.36; Br, 12.70. Found: C, 64.97; H, 5.71; N, 13.11, Br, 12.61.
EXAMPLE: 34




AMD9360: Preparation of N-(2-pyridinylmethyl)-N′-(4,5-Diphenyl-1H-imidazol-2-ylmethyl)-N′-(5,6,7,8-tetrahydro-8-quinolinyl)-1,4-benzenedimethanamine (free base)
Preparation of 4,5-Diphenyl-1-(2-trimethylsilanyl-ethoxymethyl)-1H-imidazole
Reaction of 4,5-diphenyl-1H-imidazole (300 mg, 1.36 mmol), NaH (60%, 55 mg, 1.36 mmol), and SEMCl (289 uL, 1.63 mmol) followed by column chromatography on silica gel (hexane/EtOAC 3:2) gave the title compound (304 mg, 64%) as a white solid. 1H NMR (300 MHz, CDCl3) δ 0.00 (s, 9H), 0.88 (t, 2H, J=7.5 Hz), 3.46 (t, 2H, J=9.0 Hz), 5.12 (s, 2H), 7.27–7.38 (m, 3H), 7.40–1.52 (m, 7H), 7.75 (s, 1H).
Preparation of 4,5-Diphenyl-1-(2-trimethylsilanyl-ethoxymethyl)-1H-imidazole-2-carbaldehyde
Reaction of 4,5-diphenyl-1-(2-trimethylsilanyl-ethoxymethyl)-1H-imidazole (304 mg, 0.87 mmol), 2.5 M n-BuLi (452 uL, 1.13 mmol), and DMF (269 uL, 3.48 mmol) for 1 h at −40° C. gave the title compound (257 mg, 78%) as a yellow solid. 1H NMR (300 MHz, CDCl3) δ 0.00 (s, 9H), 0.89 (t, 2H, J=9.0 Hz), 3.58 (t, 2H, J=7.5 Hz), 5.61 (s, 2H), 7.26 (br s, 5H), 7.47 (br s, 5H), 9.95 (s, 1H).
Preparation of N-(tert-Butoxycarbonyl)-N-(2-pyridinylmethyl)-N′-[4,5-Diphenyl-1-[(2-trimethylsilyl)ethoxy]methyl-imidazol-2-ylmethyl]-N′-(5,6,7,8-tetrahydro-8-quinolinyl)-1,4-benzenedimethanamine
Using general procedure B: Reaction of N-(tert-butoxycarbonyl)-N-(2-pyridinylmethyl)-N′-(5,6,7,8-tetrahydro-8-quinolinyl)-1,4-benzenedimethanamine (257 mg, 0.56 mmol), 4,5-diphenyl-1-(2-trimethylsilanyl-ethoxymethyl)-1H-imidazole-2-carbaldehyde (231 mg, 0.61 mmol), and NaBH(OAc)3 (353 mg, 1.67 mmol) for 1 h at room temperature followed by purification of the crude product by column chromatography on silica gel (CH2Cl2/MeOH/NH4OH 98:1:1) gave the title compound (231 mg, 50%) as a white foam. 1H NMR (300 MHz, CDCl3) δ 0.00 (s, 9H), 0.67 (dd, 2H, J=7.5, 7.5 Hz), 1.43 (d, 9H), 1.60–1.70 (m, 1H), 2.03–2.09 (m, 3H), 2.65–2.73 (m, 2H), 3.09–3.72 (m, 2H), 3.79 (d, 1H, J=15.0 Hz), 4.00 (d, 1H, J=15.0 Hz), 4.05–4.19 (m, 3H), 4.37 (d, 2H, J=4.8 Hz), 4.46 (brs, 2H), 5.33 (d, 1H, J=12.0 Hz), 5.48 (d, 1H, J=9.0 Hz), 7.05–7.19 (m, 11H), 7.30–7.37 (m, 7H), 7.60 (td, 1H, J=5.7, 1.8 Hz), 8.50–8.52 (m, 2H). ES-MS m/z 821 (M+H).
Using general procedure E: Reaction of N-(tert-Butoxycarbonyl)-N-(2-pyridinylmethyl)-N′-[4,5-Diphenyl-1-[(2-trimethylsilyl)ethoxy]methyl-imidazol-2-ylmethyl]-N′-(5,6,7,8-tetrahydro-8-quinolinyl)-1,4-benzenedimethanamine (223 mg, 0.27 mmol), and 6N HCl (9.0 mL) for 3 h at 50° C. followed by purification of the crude product by column chromatography on silica gel (CH2Cl2/MeOH/NH4OH 48:1:1) gave AMD9360 (123 mg, 77%) as a white foam. 1H NMR (300 MHz, CD3COCD3) δ 1.74–1.77 (m, 1H), 2.12–2.19 (m, 1H), 2.27 (br s, 1H), 2.70–2.90 (m, 4H), 3.69 (br s, 2H), 3.73 (br s, 2H), 3.79 (br s, 3H), 4.05 (d, 1H, J=16.5 Hz), 4.16 (t, 1H, J=7.2 Hz), 7.15–7.65 (m, 20H), 8.44 (br s, 1H), 8.57 (d, 1H, J=3.3 Hz); 13C NMR (75.5 MHz, CD3COCD3) δ 22.50, 24.94, 49.21, 53.93, 54.75, 55.48, 61.52, 122.87, 123.03, 123.60, 128.61, 129.16, 129.73, 136.30, 137.38, 138.58, 139.77; 141.00, 148.18, 149.86, 150.18, 159.10, 161.89. ES-MS m/z 591 (M+H). Anal. Calcd. for C39H38N6.0.7H2O: C, 77.63; H, 6.58; N, 13.93. Found: C, 77.52; H, 6.49; N, 14.01.
EXAMPLE: 35




AMD8998: Preparation of N-(2-pyridinylmethyl)-N′-(4-trifluormethyl-1H-imidazol-2-ylmethyl)-N′-(5,6,7,8-tetrahydro-8-quinolinyl)-1,4-benzenedimethanamine (hydrobromide salt)
Preparation of 4-trifluoromethyl-1H-imidazole.
3-Bromo-1,1,1-trifluoroacetone (3.50 g, 18.3 mmol) and formamide (4.40 mL, 111 mmol) were heated (neat) at 170° C. for 3 hours. The mixture was partitioned between water (30 mL) and EtOAc (100 mL). The organic phase was washed with water (3×30 mL) and brine (15 mL), then dried (MgSO4) and concentrated. The title compound was obtained as a brown solid (308 mg, 12%) and was used without further purification. 1H NMR (CD3OD) □ 7.58 (s, 1H), 7.81 (s, 1H).
4-Trifluoromethyl-1-(2-trimethylsilanyl-ethoxymethyl)-1H-imidazole
Reaction of 4-trifluoromethyl-1H-imidazole (301 mg, 2.21 mmol), 95% NaH (61 mg, 2.4 mmol), and SEMCl (406 mg, 2.44 mmol) gave the title compound as a brown oil that was used without further purification. 1H NMR (CDCl3) □ 0.00 (s, 9H), 0.93 (m, 2H), 3.51 (m, 2H), 5.30 (s, 2H), 7.39 (s, 1H), 7.64 (s, 1H).
4-Trifluoromethyl-1-(2-trimethylsilanyl-ethoxymethyl)-1H-imidazole-2-carbaldehyde
Reaction of 4-trifluoromethyl-1-(2-trimethylsilanyl-ethoxymethyl)-1H-imidazole (590 mg, 2.2 mmol), 2.3 M n-BuLi (1.3 mL, 3.0 mmol), and DMF (0.51 mL, 6.6 mmol) followed by purification of the crude material on silica gel (10% EtOAc/hexanes) gave the title compound as a yellow oil (92 mg, 14% over two steps). 1H NMR (CDCl3) □ 0.02 (s, 9H), 0.95 (m, 2H), 3.60 (m, 2H), 5.79 (s, 2H), 7.28 (s, 1H), 7.67 (s, 1H), 9.86 (s, 1H).
Preparation of N-(tert-Butoxycarbonyl)-N-(2-pyridinylmethyl)-N′-[4-trifluoromethyl-1-[(2-trimethylsilyl)ethoxy]methyl-imidazol-2-ylmethyl]-N′-(5,6,7,8-tetrahydro-8-quinolinyl)-1,4-benzenedimethanamine
Reaction of 4-trifluoromethyl-1-(2-trimethylsilanyl-ethoxymethyl)-1H-imidazole-2-carbaldehyde (87 mg, 0.30 mmol), N-(tert-butoxycarbonyl)-N-(2-pyridinylmethyl)-N′-(5,6,7,8-tetrahydro-8-quinolinyl)-1,4-benzenedimethanamine (145 mg, 0.316 mmol), acetic acid (0.017 mL, 0.30 mmol), and NaBH(OAc)3 (188 mg, 0.887 mmol) for 15 hours followed by purification of the crude material on silica gel (100:3:0.2 CH2Cl2/MeOH/NH4OH) gave the title compound as a yellow oil (168 mg, 77%). 1H NMR (CDCl3) □−0.07 (s, 9H), 0.81 (m, 2H), 1.46 (m, 9H), 1.68 (m, 1H), 1.97 (m, 2H), 2.16 (m, 1H), 2.74 (m, 2H), 3.32 (m, 2H), 3.64 (d, 1H, J=14 Hz), 3.79 (d, 1H, J=14 Hz), 3.98 (m, 3H), 4.44 (m, 4H), 5.47 (d, 1H, J=11 Hz), 5.67 (d, 1H, J=11 Hz), 7.03–7.35 (m, 9H), 7.63 (m, 1H), 8.51 (m, 2H).
The intermediate from above (162 mg, 0.220 mmol) was dissolved in trifluoroacetic acid (4 mL) and stirred at room temperature for 19 hours then concentrated. The residue was dissolved in EtOAc (25 mL) and washed with saturated NaHCO3(aq) (2×15 mL) and brine (5 mL), then dried (MgSO4) and concentrated. The crude material was purified by chromatography on silica gel (100:3:0.2 CH2Cl2/MeOH/NH4OH) to give a colourless oil (66 mg, 59%).
Using General Procedure D: The colourless oil from above (61 mg, 0.12 mmol) was converted to the hydrobromide salt providing AMD8998 as a colourless solid (81 mg, 77%). 1H NMR (D2O) □ 1.83 (m, 1H), 2.20 (m, 2H), 2.34 (m, 1H), 2.97 (m, 2H), 3.80 (m, 2H), 4.26 (d, 1H, J=16 Hz), 4.29 (s, 2H), 4.40 (d, 1H, J=16 Hz), 4.56 (s, 2H), 4.63 (m, 1H), 7.24 (d, 2H, J=7.8 Hz), 7.32 (d, 2H, J=7.8 Hz), 7.67 (s, 1H), 7.85 (m, 2H), 7.92 (d, 1H, J=8.4 Hz), 8.32 (d, 1H, J=8.1 Hz), 8.39 (m, 1H), 8.62 (d, 1H, J=5.4 Hz), 8.74 (d, 1H, J=5.4 Hz); 13C NMR (D2O) □ 20.44, 20.64, 27.78, 48.19, 49.73, 51.33, 56.23, 62.31, 120.46, 125.98, 127.42, 127.55, 129.94, 130.81, 138.61, 139.48, 140.76, 145.38, 145.54, 146.55, 148.07, 148.65, 150.94. ES-MS m/z 507 (M+H). Anal Calcd for (C28H29N6F3) 4.0(HBr) 2.2(H2O): C, 38.66; H, 4.33; N, 9.66; Br, 36.74. Found: C, 38.67; H, 4.37; N, 9.44; Br, 36.75.
EXAMPLE: 36




AMD8991: Preparation of N-(2-Pyridinylmethyl)-N′-[4-(4-fluorophenyl)-1H-imidazol-2-ylmethyl]-N′-(5,6,7,8-tetrahydro-8-quinolinyl)-1,4-benzenedimethanamine (hydrobromide salt)
Preparation of 4-(4-fluorophenyl)-1H-imidazole
2-Bromo-4′-fluoroacetophenone (4.00 g, 18.4 mmol) and formamide (4.40 mL, 111 mmol) were heated (neat) at 170° C. for 3 hours. The mixture was partitioned between water (50 mL) and CHCl3 (25 mL). The aqueous phase was extracted with CHCl3 (3×15 mL) and concentrated. The crude material was purified by chromatography on silica gel (EtOAc) to give the title compound as yellow crystals (581 mg, 19%). 1H NMR (CDCl3) □ 7.06 (m, 2H), 7.24 (s, 1H), 7.67 (m, 3H).
4-(4-Fluorophenyl)-1-(2-trimethylsilanyl-ethoxymethyl)-1H-imidazole
Reaction of 4-(4-fluoro-phenyl)-1H-imidazole (573 mg, 3.53 mmol), 95% NaH (100 mg, 4.0 mmol), and SEMCl (650 mg, 3.90 mmol) followed by purification of the crude material on silica gel (50% EtOAc/hexanes) gave the title compound as yellow crystals (695 mg, 67%). 1H NMR (CDCl3) □−0.01 (s, 9H), 0.93 (m, 2H), 3.52 (m, 2H), 5.29 (s, 2H), 7.07 (m, 2H), 7.28 (s, 1H), 7.62 (s, 1H), 7.75 (m, 2H).
4-(4-Fluorophenyl)-1-(2-trimethylsilanyl-ethoxymethyl)-1H-imidazole-2-carbaldehyde
Reaction of 4-(4-fluoro-phenyl)-1-(2-trimethylsilanyl-ethoxymethyl)-1H-imidazole (688 mg, 2.35 mmol), 1.5 M n-BuLi (2.0 mL, 3.0 mmol), and DMF (0.55 mL, 7.1 mmol) gave the title compound as a brown oil that was used without further purification in the next step. 1H NMR (CDCl3) 0.00 (s, 9H), 0.95 (m, 2H), 3.61 (m, 2H), 5.82 (s, 2H), 7.12 (m, 2H), 7.28 (s, 1H), 7.59 (s, 1H), 7.80 (m, 2H), 9.88 (s, 1H).
Preparation of N-(tert-Butoxycarbonyl)-N-(2-pyridinylmethyl)-N′-[[4-(4-fluorophenyl)-1-[(2-trimethylsilyl)ethoxy]methyl]imidazol-2-ylmethyl]-N′-(5,6,7,8-tetrahydro-8-quinolinyl)-1,4-benzenedimethanamine
Using general procedure B: Reaction of 4-(4-fluorophenyl)-1-(2-trimethylsilanyl-ethoxymethyl)-1H-imidazole-2-carbaldehyde (285 mg, 0.889 mmol),), N-(tert-butoxycarbonyl)-N-(2-pyridinylmethyl)-N′-(5,6,7,8-tetrahydro-8-quinolinyl)-1,4-benzenedimethanamine (315 mg, 0.687 mmol), acetic acid (0.04 mL, 0.70 mmol), and NaBH(OAc)3 (420 mg, 1.98 mmol) for 2 hours followed by purification of the crude material on silica gel (100:3:0.2 CH2Cl2/MeOH/NH4OH) gave the title compound as a yellow oil (334 mg, 64% over two steps). 1H NMR (CDCl3) □−0.07 (s, 9H), 0.82 (m, 2H), 1.45 (m, 9H), 1.66 (m, 1H), 1.99 (m, 2H), 2.14 (m, 1H), 2.73 (m, 2H), 3.34 (m, 2H), 3.67 (d, 1H, J=14 Hz), 3.87 (d, 1H, J=14 Hz), 3.97 (m, 2H), 4.05 (m, 1H), 4.43 (m, 4H), 5.48 (d, 1H, J=11 Hz), 5.76 (d, 1H, J=11 Hz), 6.98–7.16 (m, 8H), 7.30 (m, 3H), 7.63 (m, 3H), 8.53 (m, 2H).
A solution of the oil from above (324 mg, 0.425 mmol) in trifluoroacetic acid (4 mL) was stirred at room temperature for 67 hours then concentrated. The residue was dissolved in EtOAc (30 mL) and washed with saturated NaHCO3(aq) (2×15 mL) and brine (5 mL), then dried (MgSO4) and concentrated. The crude material was purified by chromatography on silica gel (100:3:0.2 CH2Cl2/MeOH/NH4OH) to give a yellow foam (142 mg, 63%).
Using General Procedure D: The yellow foam from above (135 mg, 0.253 mmol) was converted to the hydrobromide salt affording AMD8991 as a colourless solid (190 mg, 84%). 1H NMR (D2O) □ 1.87 (m, 1H), 2.21 (m, 2H), 2.41 (m, 1H), 3.00 (m, 2H), 3.76–3.98 (m, 4H), 4.25 (s, 2H), 4.27 (d, 1H, J=16 Hz), 4.44 (d, 1H, J=16 Hz), 4.71 (m, 1H), 7.17 (m, 6H), 7.40 (m, 3H), 7.66 (d, 1H, J=7.8 Hz), 7.75 (m, 1H), 7.89 (dd, 1H, J=7.8, 5.7 Hz), 8.22 (m, 1H), 8.36 (d, 1H, J=7.8 Hz), 8.66 (d, 1H, J=5.4 Hz), 8.71 (d, 1H, J=5.7 Hz); 13C NMR (D2O) □ 20.47, 20.75, 27.83, 48.08, 49.48, 50.86, 56.69, 62.98, 114.57, 116.64, 116.93, 122.70, 126.08, 127.31, 127.37, 127.99, 128.10, 129.50, 130.57, 130.65, 132.67, 138.95, 139.59, 140.92, 145.06, 145.52, 145.75, 146.59, 148.20, 150.88, 161.69, 164.98. ES-MS m/z 533 (M+H). Anal Calcd for (C33H33N6F) 3.9(HBr) 2.4(H2O): C, 44.46; H, 4.71; N, 9.43; Br, 34.96. Found: C, 44.44; H, 4.77; N, 9.25; Br, 35.15.
EXAMPLE: 37




AMD9366: Preparation of N-(2-pyridinylmethyl)-N′-[2-(benzimidazol-1-yl)eth-1-yl]-N′-(5,6,7,8-tetrahydro-8-quinolinyl)-1,4-benzenedimethanamine (hydrobromide salt)
Benzimidazole (590 mg, 5.0 mmol) and 3-bromo-1,2-propanediol (0.52 mL, 6.0 mmol) were dissolved in anhydrous acetonitrile (50 mL) and dry potassium carbonate (2.07 g, 15 mmol) was added. The solution was then heated to reflux for 3 days. Upon cooling the mixture was filtered and the filtrates were concentrated, giving the desired N-benzimidazolyl-1,2-propanediol (0.66 g, 69%) as a pale yellow solid. 1H NMR (CDCl3) δ 3.60 (m, 2H), 3.78 (m, 2H), 4.17 (m, 1H), 4.27 (m, 2H), 7.25 (m, 2H), 7.42 (d, 1H, J=6 Hz), 7.67 (d, 1H, J=6 Hz), 7.87 (s, 1H).
The intermediate, N-benzimidazolyl-1,2-propanediol (0.66 g, 3.4 mmol) from above was dissolved in water (25 mL) and treated with sodium periodate (0.88 g, 4.1 mmol) with stirring for 1.5 hours. The solution was then extracted with dichloromethane, dried (MgSO4), filtered and concentrated to yield 2-(benzimidazol-1-yl)-ethanal (0.22 g, 1.4 mmol) which was used immediately without further purification in the next reaction.
Using general procedure B: 2-(benzimidazol-1-yl)ethanal (0.22 g, 2.0 mmol), N-(tert-butoxycarbonyl)-N-(2-pyridinylmethyl)-N′-(5,6,7,8-tetrahydro-8-quinolinyl)-1,4-benzenedimethanamine (780 mg, 1.7 mmol) and sodium triacetoxyborohydride (590 mg, 2.8 mmol) were stirred at room temperature in dichloromethane (20 mL) for 64 hours to yield, after work-up and chromatography, the desired N-(tert-butoxycarbonyl)-N-(2-pyridinylmethyl)-N′-[2-(benzimidazol-1-yl)eth-1-yl]-N′-(5,6,7,8-tetrahydro-8-quinolinyl)-1,4-benzenedimethanamine as a brown foam (25 mg, 2.5%). 1H NMR (CDCl3) δ 1.45 (m, 9H), 1.63 (t, 2H, J=7.5 Hz), 1.88 (m, 1H), 1.98 (m, 1H), 2.64 (br d, 2H), 3.00 (m, 1H), 3.25 (m, 1H), 3.76 (d, 2H, J=12 Hz), 3.95 (m, 4H), 4.41 (s, 2H), 4.52 (s, 2H), 7.02 (m, 2H), 7.18 (m, 5H), 7.27 (m, 4H), 7.62 (t, 1H), 7.75 (d, 1H, J=7.5 Hz), 7.90 (s, 1H), 8.46 (d, 1H, J=3 Hz), 8.53 (d, 1H, J=4.5 Hz).
Using general procedure D: the residue from above was converted to the hydrobromide salt with simultaneous deprotection of the BOC group to provide AMD9366 (0.03 g) as a pale yellow solid. 1H NMR (D2O) 1.66–1.75 (m, 1H), 1.98–2.07 (m, 2H), 2.23–2.28 (m, 1H), 2.89 (br d, 2H), 3.10–3.21 (m, 1H), 3.35 (d, 1H, J=14.4 Hz), 3.82 (d, 1H, J=13.2 Hz), 3.92 (d, 1H, J=13.2 Hz), 4.28 (s, 2H), 4.35 (t, 1H, J=8.4 Hz), 4.43 (d, 2H, J=7.2 Hz), 4.63 (br, 2H), 7.31 (d, 2H, J=7.5 Hz), 7.38 (d, 2H J=7.5 Hz), 7.42 (s, 2H), 7.50–7.61 (m, 2H), 7.63–7.73 (m, 2H), 7.80 (d, 1H, J=8.4 Hz), 8.03–8.11 (br, 1H), 8.15 (d, 2H, J=7.8 Hz), 8.62–8.67 (br, 1H), 9.25 (s, 1H); 13C NMR (D2O) □ 20.32, 20.45, 27.71, 46.15, 48.78, 48.91, 51.38, 54.89, 58.62, 112.90, 115.31, 125.46, 126.80, 127.56, 130.03, 130.59, 130.74, 130.98, 139.23 (2 carbons), 140.83, 143.93, 146.45, 147.30, 147.55, 151.37. ES-MS m/z 503 (M+H). Anal. Calcd. for C32H34N6.5.4HBr.4.7H2O.1.1CH3CO2H: C, 37.68; H, 4.92; N, 7.71; Br, 39.57. Found: C, 37.70; H, 4.85; N, 7.74; Br, 39.50.
EXAMPLE: 38




AMD9382: Preparation of N-(2-pyridinylmethyl)-N′-[3-(benzimidazol-1-yl)prop-1-yl]-N′-(5,6,7,8-tetrahydro-8-quinolinyl)-1,4-benzenedimethanamine (hydrobromide salt)
A solution of 3-bromopropanol (1.39 g, 10.0 mmol), acetic anhydride (1.23 mL, 13.0 mmol), and triethylamine (2.09 mL, 15 mmol) in dichloromethane (50 mL) was treated with 4-dimethylaminopyridine (0.24 g, 2.0 mmol) and the mixture was stirred for 2.5 hours at room temperature. The mixture was then acidified with saturated ammonium chloride (25 mL), extracted with dichloromethane (2×25 mL), dried (MgSO4), filtered, and concentrated to give ethyl-3-bromopropanoate (1.29 g, 71%) as a yellow oil. 1H NMR (CDCl3) δ 2.05 (s, 3H), 2.15 (qn, 2H, J=6 Hz), 3.46 (t, 2H, J=6 Hz), 4.20 (t, 2H, J=6 Hz).
Ethyl-3-bromopropanoate (1.29 g, 7.1 mmol), benzimidazole (0.70 g, 5.9 mmol), and potassium carbonate (2.44 g, 17.7 mmol) were combined in anhydrous acetonitrile (60 mL) and heated to reflux for 3 days. Aqueous work-up gave ethyl-3-(benzimidazol-1-yl)propanoate (1.17 g, 91%). 1H NMR (CDCl3) δ 2.02 (s, 3H), 2.26 (m, 2H), 4.10 (t, 2H, J=6 Hz), 4.30 (t, 2H, J=6 Hz), 7.28 (br, 2H), 7.33 (br, 1H), 7.84 (br, 1H), 7.94 (br, 1H), 7.60 (br, 1H).
Ethyl-3-(benzimidazol-1-yl)propanoate (590 mg, 2.7 mmol) was dissolved in anhydrous methanol (13 mL), and treated with potassium carbonate (0.75 g, 5.4 mmol) and allowed to stir overnight. This provided, after work-up with ammonium chloride, 3-(benzimidazol-1-yl)-propanol (0.22 g, 49%) as a brown liquid. 1H NMR (CDCl3) δ 2.11 (qn, 2H, J=6 Hz), 2.57 (br, 1H), 3.61 (t, 2H, J=6 Hz), 4.38 (t, 2H, J=6 Hz), 7.27 (m, 2H), 7.45 (d, 1H, J=6 Hz), 7.80 (d, 1H, J=7.5 Hz), 7.93 (s, 1H).
3-(benzimidazol-1-yl)propan-1-ol (100 mg, 0.57 mmol) was dissolved in dichloromethane (6 mL), and treated with sodium periodinane (290 mg, 0.68 mmol). After stirring 5 hours, the mixture was treated with sodium bicarbonate (10 mL), ethyl acetate (10 mL), sodium thiosulfate (2 g) and extracted with ethyl acetate (2×10 mL). The organic phases were combined and washed with brine (15 mL), dried (MgSO4), filtered, and concentrated to yield the desired 3-(benzimidazol-1-yl)propanal (81 mg, 80%) as a yellow oil. 1H NMR (CDCl3) δ 3.09 (t, 2H, J=6 Hz), 4.54 (t, 2H, J=6 Hz), 7.32 (m, 2H), 7.38 (m, 1H), 7.80 (d, 1H, J=6 Hz), 8.00 (s, 1H), 9.81 (s, 1H).
Using general procedure B: 3-(benzimidazol-1-yl)propanal (75 mg, 0.43 mmol), N-(tert-butoxycarbonyl)-N-(2-pyridinylmethyl)-N′-(5,6,7,8-tetrahydro-8-quinolinyl)-1,4-benzenedimethanamine (200 mg, 0.43 mmol) and sodium cyanoborohydride (38 mg, 0.60 mmol) were stirred at room temperature in methanol (2.5 mL) for 16 hours to yield, after work-up and chromatography, N-(tert-butoxycarbonyl)-N-(2-pyridinylmethyl)-N′-(N-(benzimidazol-2-yl)prop-1-yl)-N′-(5,6,7,8-tetrahydro-8-quinolinyl)-1,4-benzenedimethanamine as a brown foam (25 mg, 10%). 1H NMR (CDCl3) δ 1.39 (m, 9H), 1.70 (m, 1H), 1.89 (m, 4H), 2.08 (m, 1H), 2.70 (m, 3H), 2.81 (m, 1H), 3.60 (d, 1H, J=12 Hz), 3.82 (d, 1H, J=12 Hz), 4.05 (m, 2H), 4.26 (m, 1H), 4.44 (s, 2H), 4.54 (s, 2H), 7.03 (m, 1H), 7.20 (m, 6H), 7.33 (d, 2H, J=4.5 Hz), 7.40 (d, 2H, J=6 Hz), 7.63 (t, 1H, J=6 Hz), 7.69 (s, 1H), 7.75 (d, 1H, J=6 Hz), 8.51 (m, 2H).
Using general procedure D: the residue from above was converted to the hydrobromide salt with simultaneous deprotection of the BOC group to provide AMD9382 (0.04 g) as a pale yellow solid. 1H NMR (D2O) 1.66–1.75 (m, 1H), 1.87–2.00 (m, 1H), 2.01–2.11 (m, 1H), 2.13–2.26 (m, 1H), 2.28–3.37 (br, 2H), 2.70–2.81 (br, 3H), 3.25 (dt, 1H, J=5.1, 12.0 Hz), 4.10 (d, 1H, J=13.5 Hz), 4.22 (d, 1H, J=13.2 Hz), 4.30 (s, 2H), 4.34 (s, 2H), 4.34–4.56 (m, 3H), 7.38 (d, 3H, J=7.8 Hz), 7.47 (d, 2H, J=7.8 Hz), 7.62–7.67 (m, 4H), 7.71–7.81 (m, 3H), 8.10 (t, 1H, J=7.8 Hz), 8.26 (d, 1H, J=4.8 Hz), 8.63 (d, 1H, J=5.1 Hz), 9.13 (s, 1H); 13C NMR (D2O) □ 20.30, 20.78, 26.70, 27.37, 44.70, 48.60, 48.81, 51.27, 55.43, 61.69, 113.09, 115.34, 124.91, 126.89 (2 carbons), 127.37, 127.70, 130.83, 131.01 (3 carbons), 131.34 (3 carbons), 134.58, 137.26, 140.37, 142.12, 144.01, 144.22, 146.42, 147.45, 149.93. ES-MS m/z 517 (M+H). Anal. Calcd. for C33H36N6.5.4HBr.3.9H2O.0.2CH3CO2H: C, 38.73; H, 4.86; N, 8.11; Br, 41.65. Found: C, 38.91; H, 5.05; N, 8.12; Br, 41.58.
EXAMPLE: 39




AMD9410: Preparation of N-(2-pyridinylmethyl)-N′-(3,4-dihydro-2H-pyrano[3,2-b]pyridinyl)-1,4-benzenedimethanamine
2-Bromo-3-but-3-enyloxy-pyridine
To a solution of triphenylphosphine (903 mg, 3.44 mmol), 3-buten-1-ol (0.25 mL, 2.88 mmol) and 2-bromo-3-pyridinol (500 mg, 2.87 mmol) in THF (26 mL) at 0° C. was added dropwise diethyl azodicarboxylate (0.50 mL, 3.14 mmol). The ice bath was removed and the mixture was allowed to stir at 50° C. for 18 hours under N2. The reaction mixture was diluted with ethyl acetate (300 mL), and washed with sat. NaHCO3, then brine and dried over Na2SO4. Evaporation of the solvent and purification of the residue by flash chromatography on silica gel, using 10% ethyl acetate in hexanes, afforded the title compound (514 mg, 78%) as pale yellow solid. 1H NMR (CDCl3) □ 2.58–2.66 (m, 2H), 4.08 (t, 2H, J=6.9 Hz), 5.13–5.24 (m, 2H), 5.87–5.98 (m, 1H), 7.10–7.14 (m, 1H), 7.18–7.22 (m, 1H), 7.97 (dd, 1H, J=1.5, 6.0 Hz).
4-Methylene-3,4-dihydro-2H-pyrano[3,2-b]pyridine
A reaction tube was charged with 2-Bromo-3-but-3-enyloxy-pyridine (106 mg, 0.45 mmol), triphenylphosphine (35 mg, 0.133 mmol), palladium acetate (10 mg, 0.044 mmol), potassium acetate (223 mg, 2.27 mmol), tetraethylammonium chloride hydrate (151 mg, 0.91 mmol) and degassed DMF (2 mL). A rubber septum was used to seal the tube and the contents were then flushed several times with argon, then closed tightly with a cap. The mixture was heated at 110° C. under argon for 18 hours, cooled to room temperature then diluted with 200 mL ethyl acetate. The organic layer was washed with sat. NaHCO3, then brine and dried over Na2SO4. Evaporation of the solvent and purification of the residue by flash chromatography on silica gel, using 5% ethyl acetate in hexanes, afforded the title compound (35 mg, 52%) as white solid. 1H NMR (CDCl3) □ 2.79–2.84 (m, 2H), 4.25 (t, 2H, J=5.7 Hz), 5.06–5.08 (m, 1H), 6.19 (d, 1H, J=1.6 Hz), 7.08–7.17 (m, 2H), 8.20 (dd, 1H, J=1.6, 4.7 Hz); ES-MS m/z 148.0 (M+H).
4-Hydroxymethyl-3,4-dihydro-2H-pyrano[3,2-b]pyridinyl-4-ol
To a solution of 4-methylene-3,4-dihydro-2H-pyrano[3,2-b]pyridine (247 mg, 1.69 mmol) and 4-methylmorpholine N-oxide (608 mg, 5.03 mmol) in CH2Cl2 (4 mL) was added osmium tetroxide (2.5 wt. % solution in 2-methyl-2-propanol, 0.4 mL, 0.03 mmol). The mixture was stirred at room temperature under N2 for 24 hours, diluted with 200 mL ethyl acetate, then filtered though a pad of celite. Evaporation of the solvent and purification of the residue by flash chromatograph on silica gel, using 3:3:94 CH3OH—NH3 H2O—CH2Cl2, afforded the title compound (276 mg, 90%) as white solid. 1H NMR (CD3OD) □ 2.00 (ddd, 1H, J=3.0, 5.1, 14.1 Hz), 2.32 (ddd, 1H, J=5.1, 9.6, 14.4 Hz), 3.84 (d, 1H, J=11.1 Hz), 3.95 (d, 1H, J=11.1 Hz), 4.30–4.36 (m, 2H), 7.21–7.23 (m, 2H), 8.13 (dd, 1H, J=3.0, 3.0 Hz); ES-MS m/z 182.0 (M+H).
2,3-Dihydro-pyrano[3,2-b]pyridinyl-4-one
To a solution of 4-hydroxymethyl-3,4-dihydro-2H-pyrano[3,2-b]pyridinyl-4-ol (276 mg, 1.52 mmol) in H2O (2 mL) was added sodium periodate (649 mg, 3.04 mmol). The mixture was allowed to stir at room temperature for 2 hours and diluted with large volume of ethyl acetate, then dried over Na2SO4. Evaporation of the solvent and purification of the residue by flash chromatography on silica gel, using 20% ethyl acetate in CH2Cl2, gave the title compound (126 mg, 74%) as white solid. 1H NMR (CDCl3) □ 2.97 (t, 2H, J=6.6 Hz), 4.61 (t, 2H, J=6.6 Hz), 7.36–7.43 (m, 2H), 8.44 (dd, 1H, J=2.1, 12.6 Hz); ES-MS m/z 150.1 (M+H).
N-(2-nitrobenzenesulfonyl)-N-(2-pyridinylmethyl)-N-(3,4-dihydro-2H-pyrano[3,2-b]pyridinyl)-1,4-benzenedimethanamine
Using general procedure B: Reaction of 2,3-dihydro-pyrano[3,2-b]pyridinyl-4-one (45 mg, 0.30 mmol), N-(2-nitrobenzenesulfonyl)-N-(2-pyridinyl)-1,4-benzenedimethanamine (137 mg, 0.33 mmol), acetic acid (0.05 mL) and sodium triacetoxyborohydride (189 mg, 0.90 mmol) in THF (5 mL) at 50° C. for 40 min., followed by purification of crude material using radial chromatography on silica gel (2 mm plate, 3:3:94 CH3OH—NH3 H2O—CH2Cl2), afforded the title compound (107 mg, 66%) as white form. 1H NMR (CDCl3) □ 1.99–2.09 (m, 1H), 2.18–2.21 (m, 1H), 3.83–3.95 (m, 3H), 4.13–4.22 (m, 1H), 4.34–4.41 (m, 1H), 4.58 (s, 2H), 4.59 (s, 2H), 7.06–7.15 (m, 6H), 7.20–7.24 (m, 2H), 7.51–7.57 (m, 2H), 7.61–7.67 (m, 2H), 7.94 (d, 1H, J=8.0 Hz), 8.14 (dd, 1H, J=2.1, 3.9 Hz), 8.40 (d, 1H); ES-MS m/z 546.1 (M+H).
Using general procedure C: Reaction of N-(2-nitrobenzenesulfonyl)-N-(2-pyridinylmethyl)-N′-(3,4-dihydro-2H-pyrano[3,2-b]pyridinyl)-1,4-benzenedimethanamine (96 mg, 0.17 mmol) with thiophenol (0.037 mL, 0.36 mmol) and K2CO3 (73 mg, 0.54 mmol) in DMF (1.5 mL) at room temperature under N2 for 16 hours followed by purification of crude material using radial chromatography on silica gel (1 mm plate, 3:3:94 CH3OH—NH3 H2O—CH2Cl2), afforded AMD9410 (55 mg, 87%). 1H NMR (CDCl3) □ 2.01–2.22 (m, 2H), 2.34 (br, s, 2H), 3.81 (s, 2H), 3.88–3.99 (m, 5H), 4.14–4.20 (m, 1H), 4.33–4.38 (m, 1H), 7.03–7.16 (m, 3H), 7.26–7.37 (m, 5H), 7.62 (ddd, 1H, J=1.5, 7.5, 7.8 Hz), 8.13 (dd, 1H, J=1.8, 4.2 Hz), 8.53 (d, 1H); 13C NMR (CDCl3) □ 28.15, 51.85, 53.62, 53.93, 54.85, 63.94, 122.33, 122.75, 123.86, 124.47, 128.67, 128.78, 136.82, 139.20, 139.48, 141.79, 144.85, 149.71, 151.72, 160.11; ES-MS m/z 361.2 (M+H); Anal. Calcd. for (C22H24N4O).0.3(H2O): C, 72.22; H, 6.78; N, 15.31. Found: C, 72.19; H, 6.71; N, 15.16.
EXAMPLE: 40




AMD9418: Preparation of N-(2-pyridinylmethyl)-N′-(1-H-benzimidazol-2-ylmethyl)-N′-(3,4-dihydro-2H-pyrano[3,2-b]pyridinyl)-1,4-benzenedimethanamine (hydrobromide salt)
Preparation of N-(tert-butoxycarbonyl)-N-(2-pyridinylmethyl)-N′-(3,4-dihydro-2H-pyrano[3,2-b]pyridinyl)-1,4-benzenedimethanamine
Using general procedure B: Reaction of 2,3-Dihydro-pyrano[3,2-b]pyridinyl-4-one (126 mg, 0.84 mmol), N-(tert-butoxycarbonyl)-N-(2-pyridinyl)-1,4-benzenedimethanamine (303 mg, 0.92 mmol), acetic acid (0.4 mL) and sodium triacetoxyborohydride (534 mg, 2.50 mmol) in THF (8 mL) at room temperature under N2 for 40 min., followed by purification of crude material using radial chromatography on silica gel (2 mm plate, 3:3:94 CH3OH—NH3 H2O—CH2Cl2), afforded the title compound (290 mg, 74%) as white form. 1H NMR (CDCl3) □ 1.44 (br, d, 9H), 2.08–2.22 (m, 2H), 3.89 (d, 1H, J=13.2 Hz), 3.99 (d, 1H, J=13.2 Hz), 4.16–4.22 (m, 1H), 4.33–4.38 (m, 1H), 4.39–4.44 (m, 5H), 7.05–7.19 (m, 6H), 7.32 (d, 2H, J=8.1 Hz), 7.63 (ddd, 1H, J=1.8, 7.5, 7.8 Hz), 8.14 (dd, 1H, J=1.8, 4.2 Hz), 8.51 (d, 1H, J=4.2 Hz); ES-MS m/z 461.1 (M+H).
N-(tert-butoxycarbonyl)-N-(2-pyridinylmethyl)-N′-[[1-(2-trimethylsilyl)ethoxy]methyl-benzimidazol-2-ylmethyl]-N′-(3,4-dihydro-2H-pyrano[3,2-b]pyridinyl)-1,4-benzenedimethanamine
Using general procedure B: Reaction of N-(tert-butoxycarbonyl)-N-(2-pyridinylmethyl)-N′-(3,4-dihydro-2H-pyrano[3,2-b]pyridinyl)-1,4-benzenedimethanamine (270 mg, 0.59 mmol), 1-[(2-trimethylsily)ethoxy]methyl-benzimidazol-2-carboxaldehyde (174 mg, 0.63 mmol), acetic acid (0.2 mL) and sodium triacetoxyborohydride (400 mg, 1.88 mmol) in THF (6.3 mL) at room temperature under N2 for 40 min., followed by purification of the crude material using radial chromatography on silica gel (2 mm plate, 3:3:94 CH3OH—NH3 H2O—CH2Cl2), afforded the title compound (209 mg, 78% yield, 63% conversion) as pale yellow foam. 1H NMR (CDCl3) □ 0.15 (s, 6H), 0.74 (dd, 2H, J=8.1, 8.1 Hz), 1.45 (br, d, 9H), 2.17–2.22 (m, 1H), 2.35–2.40 (m, 1H), 3.26 (dd, 2H, J=8.1, 8.1 Hz), 3.64 (d, 1H, J=14.1 Hz), 3.86 (d, 1H, J-=14.1 Hz), 4.03–4.18 (m, 3H), 4.27 (d, 1H, J=13.2 Hz), 4.33–4.38 (m, 3H), 4.44–4.47 (m, 2H), 5.64 (d, 1H, J=11.1 Hz), 5.96 (d, 1H, J=12.3 Hz), 7.06 (d, 2H, J=3.0 Hz), 7.11–7.15 (m, 3H), 7.17–7.22 (m, 3H), 7.29 (d, 2H, J=8.1 Hz), 7.38–7.42 (m, 1H), 7.61 (ddd, 1H, J=1.5, 7.8, 7.8 Hz), 7.66–7.71 (m, 1H), 8.29 (dd, 1H, J=3.0, 3.0 Hz), 8.50 (d, 1H); ES-MS m/z 721.6 (M+H).
Using general procedure E: Reaction of N-(tert-butoxycarbonyl)-N-(2-pyridinylmethyl)-N′-{[1-(2-trimethylsilyl)ethoxy]methyl-benzimidazol-2-ylmethyl}-N′-(3,4-dihydro-2H-pyrano[3,2-b]pyridinyl)-1,4benzenedimethanamine (209 mg, 0.29 mmol) and 6N HCl (3 mL) at 50° C. for 3 hours under N2 followed by purification of crude material using radial chromatography on silica gel (2 mm plate, 3:3:94 CH3OH—NH3 H2O—CH2Cl2), afford the desired intermediate (130 mg, 93%) as pale yellow oil.
Using general procedure D: The oil from above was converted to the corresponding hydrobromide salt to afford AMD9418. 1H NMR (D2O) □ 2.55–2.70 (m, 2H), 3.80 (s, 2H), 3.86 (s, 2H), 4.11 (s, 2H), 4.41–4.71 (m, 4H), 4.95 (dd, 1H, J=6.6, 9.6 Hz), 7.04 (d, 2H, J=7.8 Hz), 7.22 (d, 2H, J=7.8 Hz), 7.33–7.36 (m, 2H), 7.51–7.54 (m, 2H), 7.59 (d, 1H, J=7.8 Hz), 7.67 (dd, 1H, J=5.7, 6.9 Hz), 7.88–7.93 (m, 1H), 8.04 (d, 1H, J=8.7 Hz), 8.14 (dd, 1H, J=6.9, 7.5 Hz), 8.53 (d, 1H, J=5.4 Hz), 8.64 (d, 1H, J=4.5 Hz); 13C NMR (D2O) □ 20.31, 49.09, 49.78, 50.35, 56.54, 58.86, 67.40, 113.90, 126.15, 126.28, 126.67, 127.80, 130.24, 130.42, 130.91, 135.09, 135.45, 137.91, 138.38, 142.38, 147.54, 148.27, 151.66, 156.19; ES-MS m/z 491.2 (M+H); Anal. Calcd. for (C30H30N6O).3.8(HBr).2.4(H2O): C, 42.83; H, 4.62; N, 9.99; Br, 36.09. Found: C, 42.99; H, 4.57; N, 9.90; Br, 35.95.
EXAMPLE: 41




AMD9361: Preparation of N-(2-pyridinylmethyl)-N′-(8-methyl-5,6,7,8-tetrahydro-8-quinolinyl)-1,4-benzenedimethanamine (hydrobromide salt)
6,7-Dihydro-5H-quinolin-8-one
8-hydroxy-5,6,7,8-tetrahydroquinoline was prepared as described in Bridger et al. PCT International Application PCT/CA00/00321. To a stirred solution of 8-hydroxy-5,6,7,8-tetrahydroquinoline (1.37 g, 9.18 mmol) in dry CH2Cl2 (50 mL) was added activated manganese dioxide (85% purity, 7.51 g, 73.5 mmol) in one portion. The resulting heterogeneous mixture was stirred vigorously for 4 days, at which point the black slurry was filtered through a cake of celite and washed with CH2Cl2 (3×50 mL). The combined filtrates were concentrated to afford 1.15 g (85%) of the title compound as an off-white solid. This material was used directly in subsequent steps without further purification. 1H NMR (CDCl3) □ 2.17–2.25 (m, 2H), 2.82 (t, 2H, J=6 Hz), 3.04 (t, 2H, J=6 Hz), 7.39 (dd, 1H, J=9, 5 Hz), 7.66 (dt, 1H, J=9, 1 Hz), 8.71 (dd, 1H, J=5, 1 Hz); 13C NMR (CDCl3) □ 22.2, 28.6, 39.2, 126.6, 137.3, 140.4, 147.6, 148.6, 196.5.
8-Methyl-5,6,7,8-tetrahydroquinolin-8-ol
A 3.0 M solution of methylmagnesium bromide in THF (6.80 mL, 20.4 mmol) was added dropwise to a cold (0° C.), stirred solution of 6,7-dihydro-5H-quinolin-8-one (2.00 g, 13.6 mmol) in dry CH2Cl2 (50 mL). The resulting solution was stirred at 0° C. for 1 h, then warmed slowly to room temperature and stirred for a further 1 h. Saturated aqueous NH4Cl (50 mL) was added cautiously and the phases were separated. The aqueous layer was extracted with CH2Cl2 (3×50 mL) and the combined organic extracts were dried (MgSO4) and concentrated. Flash chromatography (silica gel, EtOAc) of the crude material afforded 0.80 g (40% recovery) starting material and 1.06 g (48%) of the title compound as a white crystalline solid. 1H NMR (CDCl3) □ 1.53 (s, 3H), 1.67–1.83 (m, 1H), 1.85–2.06 (m, 3H), 2.78–2.83 (m, 2H), 3.77 (br s, 1H), 7.09 (dd, 1H, J=8, 4 Hz), 7.38 (dt, 1H, J=8, 1 Hz), 8.40 (dd, 1H, J=4, 1 Hz); 13C NMR (CDCl3) □ 19.7, 28.7, 30.3, 36.8, 70.6, 122.1, 130.5, 136.8, 146.9, 160.8.
8-Methyl-5,6,7,8-tetrahydroquinolin-8-ylamine
To a cold (0° C.) stirred solution of 8-methyl-5,6,7,8-tetrahydroquinolin-8-ol (1.06 g, 6.49 mmol) in dry CH2Cl2 (30 mL) was added triethylamine (2.0 mL, 14 mmol) followed by methanesulfonyl chloride (0.80 mL, 10.3 mmol). The resulting mixture was stirred at 0° C. for 1 h, then warmed slowly to room temperature and stirred for a further 1 h. Saturated aqueous NaHCO3 (30 mL) was added and the phases were separated. The aqueous layer was extracted with CH2Cl2 (3×30 mL) and the combined organic extracts were dried (MgSO4) and concentrated (note: the resulting mesylate is relatively unstable and should be used immediately upon preparation). The resulting pale yellow oil was taken up in dry DMF (15 mL) and solid sodium azide (844 mg, 13.0 mmol) was added; the suspension was then heated to 60° C. and stirred vigorously for 3 h. Next, the reaction mixture was cooled to room temperature, diluted with CH2Cl2 (30 mL) and poured into saturated aqueous NaHCO3 (50 mL). The phases were separated and the aqueous layer was extracted with CH2Cl2 (3×30 mL), then the combined organic extracts were washed once with brine (20 mL), dried (MgSO4), and concentrated in vacuo (a reduced pressure of  ̃0.5 Torr was required to remove all traces of DMF). Flash chromatography (silica gel, 4:1 hexanes-EtOAc) of the crude material afforded 1 g of a pale yellow oil that 1H NMR and MS analysis indicated was a 59:20:21 mixture of 8-methyl-5,6-dihydroquinoline, 8-methylene-5,6,7,8-tetrahydro-quinoline and 8-azido-8-methyl-5,6,7,8-tetrahydroquinoline, respectively. This material was taken up in dry MeOH (20 mL), flushed with nitrogen, and 10% palladium on carbon (100 mg) was added; the mixture was hydrogenated (50 psi) on a Parr Shaker for 5 h. The crude material was filtered through a cake of celite and washed with MeOH (3×20 mL) then the combined washings were concentrated. Flash chromatography (silica gel, 20:2:1 CHCl3-MeOH—NH4OH) of the crude material afforded 180 mg (17%) of the title compound as a pale yellow oil. 1H NMR (CDCl3) □ 1.46 (s, 3H), 1.82–1.89 (m, 3H), 1.90–2.03 (m, 3H), 2.77–2.81 (m, 2H), 7.04 (dd, 1H, J=9, 5 Hz), 7.35 (dt, 1H, J=9, 1 Hz), 8.42 (dd, 1H, J=5, 1 Hz); 13C NMR (CDCl3) □ 19.6, 29.5, 30.9, 38.6, 52.3, 121.4, 130.3, 136.7, 147.1, 163.1. ES-MS m/z 163 (M+H).
Preparation of N-(2-Pyridinylmethyl)-N-(8-methyl-5,6,7,8-tetrahydro-8-quinolinyl)-1,4-benzenedimethanamine (AMD9361)
Using general procedure B: 8-Methyl-5,6,7,8-tetrahydroquinolin-8-ylamine (44 mg, 0.30 mmol) and 4-[[N-(tert-butoxycarbonyl)-N-(2-pyridinylmethyl)amino]methyl]benzylaldehyde (97 mg, 0.30 mmol) were converted into the corresponding reductive amination adduct using the following quantities of reagents and solvents: NaBH(OAc)3 (127 mg, 0.60 mmol), CH2Cl2 (3 mL). The reaction time in this case was 18 h. Purification of the crude material by radial chromatography (2 mm plate, 20:2:1 CHCl3-MeOH—NH4OH) afforded 121 mg (89%) of N-tert-butoxycarbonyl-N-(2-pyridinylmethyl)-N′-(8-methyl-5,6,7,8-tetrahydro-8-quinolinyl)-1,4-benzenedimethanamine as a colourless oil.
Using general procedure D: the intermediate from above (121 mg, 0.26 mmol) was converted to the hydrobromide salt with simultaneous deprotection of the BOC group to afford 89 mg (79%) of AMD9361 as a white solid. 1H NMR (D2O) □ 1.84 (s, 3H), 2.02–2.11 (m, 2H), 2.27–2.35 (m, 1H), 2.44–2.53 (m, 1H), 2.93–3.08 (m, 2H), 4.02 (d, 1H, J=12 Hz), 4.30 (d, 1H, J=12 Hz), 4.50 (s, 2H), 4.75 (s, 2H), 7.50–7.60 (m, 5H), 7.93 (dd, 1H, J=8, 1 Hz), 8.05–8.10 (m, 1H), 8.15 (d, 1H, J=8 Hz), 8.57–8.63 (m, 2H), 8.87 (br d, 1H, J=6 Hz); 13C NMR (D2O) □ 18.5, 25.7, 27.8, 31.2, 46.2, 47.7, 51.7, 62.6, 125.5, 128.1, 128.4, 131.3, 131.6, 133.1, 136.4, 142.2, 144.4, 145.6, 146.4, 147.1, 150.6. ES-MS m/z 373 (M+H). Anal. Calcd. for C24H28N4.4.6HBr.1.8H2O: C, 37.09; H, 4.69; N, 7.21; Br, 47.30. Found: C, 36.99; H, 4.68; N, 6.99; Br, 47.43.
EXAMPLE: 42




AMD9405: Preparation of N-(2-pyridinylmethyl)-N′-(1H-benzimidazol-2-ylmethyl)-N′-(8-methyl-5,6,7,8-tetrahydro-8-quinolinyl)-1,4-benzenedimethanamine (free base)
2-Chloromethyl-1-(2-trimethylsilylethoxymethyl)-1H-benzimidazole
To a stirred solution of 2-chloromethylbenzimidazole (1.89 g, 11.4 mmol) in dry THF (57 mL) was added N,N-diisopropylethylamine (3.00 mL, 17.2 mmol) and 2-(trimethylsilyl)ethoxymethyl chloride (1.90 mL, 10.8 mmol) both via syringe under nitrogen at room temperature. The mixture was stirred for 3 days at which time the solvent was removed in vacuo. The residue was taken up in CH2Cl2 (100 mL) and washed with water (100 mL) and brine (100 mL). The organic layer was dried over sodium sulfate, filtered, and concentrated in vacuo to afford the crude product as a yellow oil. Purification by flash chromatography (silica gel, 100:2:1 CH2Cl2-methanol-ammonium hydroxide) provided 2.17 g (65%) of the title compound as a yellow oil, which solidified on standing. 1H NMR (CDCl3) δ−0.06 (s, 9H), 0.92 (t, 2H, J=7.5 Hz), 3.57 (t, 2H, J=7.5 Hz), 4.91 (s, 2H), 5.65 (s, 2H), 7.31–7.36 (m, 2H), 7.50 (d, 1H, J=7.5 Hz), 7.78 (d, 1H, J=7.5 Hz).
N-(2-Pyridinylmethyl)-N′-(1H-benzimidazol-2-ylmethyl)-N′-(8-methyl-5,6,7,8-tetrahydro-8-quinolinyl)-1,4-benzenedimethanamine (AMD9405)
Reaction of N-tert-Butoxycarbonyl-N-(2-pyridinylmethyl)-N′-(8-methyl-5,6,7,8-tetrahydro-8-quinolinyl)-1,4-benzenedimethanamine (120 mg, 0.26 mmol), 2-chloromethyl-1-(2-trimethylsilylethoxymethyl)-1H-benzimidazole (234 mg, 0.79 mmol) and diisopropylethylamine (229 uL, 1.31 mmol) in DMF (2.6 mL) for 18 h at 90° C. followed by purification of the crude material by radial chromatography (2 mm plate, 20:2:1 CHCl3-MeOH—NH4OH) afforded 90 mg (48%) of N-tert-butoxycarbonyl-N-(2-pyridinylmethyl)-N′-(1-(2-trimethylsilylethoxymethyl)-1H-benzimidazol-2-ylmethyl)-N′-(8-methyl-5,6,7,8-tetrahydro-8-quinolinyl)-1,4-benzenedimethanamine as a colourless oil.
The compound from above was taken up in dry CH2Cl2 (1 mL) and trifluoroacetic acid (1 mL) was added, then the mixture was stirred 18 h. At this time the solvent was removed in vacuo and the residue was dissolved in dry MeOH (3 mL) and anhydrous K2CO3 (87 mg, 0.63 mmol) was added. The resulting suspension was stirred for 2 h, then the solvent was removed in vacuo, and the residue was dissolved in CHCl3 (5 mL). This material was filtered through a cake of celite and washed with CHCl3 (3×10 mL), then the combined washings were concentrated. Purification of the crude material by radial chromatography (1 mm plate, 50:1:1 CHCl3-MeOH—NH4OH) afforded 36 mg (57%) of AMD9405 as an off-white foam. 1H NMR (CDCl3) □ 1.60 (s, 3H), 1.79–1.93 (m, 2H), 2.01–2.12 (m, 2H), 2.26 (td, 1H, J=12, 3 Hz), 2.81–2.87 (m, 2H), 3.62 (d, 1H, J=15 Hz), 3.64 (s, 2H), 3.74 (s, 2H), 3.82 (d, 1H, J=15 Hz), 3.98 (d, 1H, J=18 Hz), 4.35 (d, 1H, J=18 Hz), 7.08–7.22 (m, 10H), 7.42–7.46 (m, 2H), 7.53 (br s, 1H), 7.62 (td, 1H, J=8, 2 Hz), 8.54 (br d, 1H, J=5 Hz), 8.61 (dd, 1H, J=5, 2 Hz); 13C NMR (CDCl3) □ 20.7, 28.1, 29.6, 33.8, 47.1, 52.9, 54.2, 54.5, 62.8, 121.8, 122.0, 122.4, 127.9, 128.7, 133.8, 136.3, 137.7, 138.3, 138.6, 146.7, 149.2, 157.1, 159.8, 161.9. ES-MS m/z 503 (M+H). Anal. Calcd. for C32H34N6.0.6H2O.1.4C2H6O: C, 72.32; H, 7.60; N, 14.54. Found: C, 72.67; H, 7.21; N, 14.14.
EXAMPLE: 43




AMD9412: Preparation of N-(2-pyridinylmethyl)-N′-(2-bromo-5,6,7,8-tetrahydro-8-quinolinyl)-1,4-benzenedimethanamine (hydrobromide salt)
2-Bromo-5,6,7,8-tetrahydroquinolin-8-ol was prepared according to the procedure described by Zimmerman et al. (Zimmerman, S. C.; Zeng, Z.; Wu, W.; Reichert, D. E. J. Am. Chem. Soc. 1991, 113, 183–196).
To a cold (0° C.) stirred solution of 2-bromo-5,6,7,8-tetrahydroquinolin-8-ol (500 mg, 2.36 mmol) in dry CH2Cl2 (10 mL) was added triethylamine (0.72 mL, 5.2 mmol) followed by methanesulfonyl chloride (0.35 mL, 3.6 mmol). The resulting mixture was stirred at 0° C. for 1 h, then warmed slowly to room temperature and stirred a further 1 h. Saturated aqueous NaHCO3 (30 mL) was added and the phases were separated. The aqueous layer was extracted with CH2Cl2 (3×30 mL) and the combined organic extracts were dried (MgSO4) and concentrated to give 605 mg (88%) of 2-bromo-5,6,7,8-tetrahydroquinolin-8-yl methanesulfonate as an orange solid.
The material from above (216 mg, 0.74 mmol) was taken up in dry DMSO (6 mL) and triethylamine (0.40 mL, 3.7 mmol) and N-tert-butoxycarbonyl-N-(2-pyridinylmethyl)-1,4-benzenedimethanamine (244 mg, 0.74 mmol) were added. The mixture was stirred at 80° C. for 18 h, at which point the reaction was cooled to room temperature and diluted with CH2Cl2 (150 mL); the resulting solution was washed with water (20 mL) and brine (20 mL), dried (MgSO4), and concentrated. Purification of the crude material by flash chromatography (silica gel, 20:1:1 CH2Cl2-MeOH—NH4OH) afforded 175 mg (44%) of N-tert-butoxycarbonyl-N-(2-pyridinylmethyl)-N′-(2-bromo-5,6,7,8-tetrahydro-8-quinolinyl)-1,4-benzenedimethanamine as a pale yellow oil.
Using general procedure D: the intermediate from above (40 mg, 0.074 mmol) was converted to the hydrobromide salt with simultaneous deprotection of the BOC group to afford 33 mg (57%) of the title compound as a white solid. 1H NMR (D2O) □ 1.81–1.89 (m, 1H), 1.99–2.11 (m, 2H), 2.44–2.50 (m, 1H), 2.82–2.85 (m, 2H), 4.44 (br s, 2H), 4.49 (s, 2H), 4.57 (dd, 1H), J=10, 6 Hz), 7.52 (d, 1H, J=8 Hz), 7.57 (d, 1H, J=8 Hz), 7.60 (d, 2H, J=10 Hz), 7.64 (d, 2H, J=10 Hz), 7.98 (dd, 1H, J=6, 7 Hz), 8.04 (d, 1H, J=8 Hz), 8.50 (td, 1H, J=8, 1 Hz), 8.82 (d, 1H, J=5 Hz); 13C NMR (D2O) □ 22.2, 27.4, 29.5, 50.6 (2 peaks), 54.1, 59.5, 130.2, 130.4, 131.3, 133.7, 133.8, 134.2, 135.7, 136.9, 141.1, 144.3, 147.6, 148.6, 148.9, 153.3. ES-MS m/z 437 (M+H). Anal. Calcd. for C23H25BrN4.3.8HBr.2.1H2O: C, 35.30; H, 4.25; N, 7.16; Br, 49.00. Found: C, 35.50; H, 4.44; N, 6.90; Br, 48.88.
EXAMPLE: 44




AMD9343: Preparation of N-(2-pyridinylmethyl)-N′-[1H-benzimidazol-2-ylmethyl]-N′-(4-methoxy-5,6,7,8-tetrahydro-8-quinolinyl)-1,4-benzenedimethanamine (hydrobromide salt)
8-amino-4-methoxy-5,6,7,8-tetrahydroquinoline
8-amino-4-methoxy-5,6,7,8-tetrahydroquinoline was prepared in 68% yield from 8-hydroxy-4-methoxy-5,6,7,8-tetrahydroquinoline (preparation and characterization described by: Uchida, M.; Morita, S.; Chihiro, M.; Kanbe, T.; Yamasaki, K.; Yabuuchi, Y.; Nakagawa, K. Chem. Pharm. Bull. 1989, 37, 1517–1523) using the same procedure employed to prepare 8-amino-5,6,7,8-tetrahydroquinoline (see Bridger et al. PCT International Application PCT/CA00/00321). 1H NMR (CDCl3) □ 1.59–2.15 (m, 6H), 2.60–2.65 (m, 2H), 3.84 (s, 3H), 3.95 (dd, 1H, J=6.0, 9.0 Hz), 6.61 (d, 1H, J=6.0 Hz). 8.32 (d, 1H, J=6.0 Hz); 13C NMR (CDCl3) □ 19.53, 22.89, 31.94, 51.57, 55.62, 104.04, 120.94, 148.52, 160.42, 163.71; ES-MS m/z 179 (M+H).
N-(2-pyridinylmethyl)-N-(2-nitrobenzenesulfonyl)-N′-(4-methoxy-5,6,7,8-tetrahydro-8-quinolinyl)-1,4-benzenedimethanamine
Using General Procedure B: Reaction of 8-amino-4-methoxy-5,6,7,8-tetrahydroquinoline (0.860 g, 4.83 mmol) and N-[1-methylene-4-(carboxaldehyde)phenylene]-N-(2-nitrobenzenesulfonyl)-2-(aminomethyl)pyridine (PCT Int. Application PCT/CA00/00321) (1.981 g, 4.82 mmol) with NaBH(OAc)3 (1.555 g, 7.34 mmol) in CH2Cl2 (24 mL) for 21 hours followed by purification of the crude material by column chromatography on silica gel (20:1:1 CH2Cl2-MeOH—NH4OH) provided 1.68 g (61%) of the title compound as a white solid. 1H NMR (CDCl3) □ 1.64–1.80 (m, 2H), 1.97–2.23 (m, 2H), 2.56–2.73 (m, 2H), 3.75–3.93 (m, 6H), 4.57 (s, 2H), 4.60 (s, 2H), 6.62 (d, 1H, J=5.7 Hz). 7.07–7.12 (m, 3H), 7.21–7.27 (m, 3H), 7.52–7.57 (m, 2H), 7.60–7.65 (m, 2H), 7.93 (d, 1H, J=7.8 Hz), 8.31 (d, 1H, J=5.7 Hz); 8.42 (d, 1H, J=7.2 Hz);
A solution of N-(2-pyridinylmethyl)-N-(2-nitrobenzenesulfonyl)-N′-(4-methoxy-5,6,7,8-tetrahydro-8-quinolinyl)-1,4-benzenedimethanamine (0.337 g, 0.621 mmol), tert-butoxycarbonyl)-2-(chloromethyl)benzimidazole (0.302 g, 1.13 mmol) and N,N-diisopropylethylamine (0.3 mL, 1.725 mmol) in CH3CN (6 mL) was heated at 80° C. for 5 days. Purification of the crude material by radial chromatography on silica gel (2 mm plate, 20:1:1 CH2Cl2-MeOH—NH4OH) provided 0.360 g of the alkylated material as a tan solid.
Using general procedure C: the tan solid from above (0.360 g) was treated with thiophenol (0.30 mL, 2.92 mmol) and K2CO3 (0.664 g, 4.81 mmol) in CH3CN (9 mL). Purification of the crude material by column chromatography on silica gel (20:1 CH2Cl2-MeOH followed by 20:1:1 CH2Cl2-MeOH—NH4OH) provided 0.098 g (30%) of the free base of the title compound and 0.052 g (14%) of N-(2-pyridinylmethyl)-N′-[2-(tert-butoxycarbonyl)-1H-benzimidazol-2-ylmethyl]-N′-(4-methoxy-5,6,7,8-tetrahydro-8-quinolinyl)-1,4-benzenedimethanamine.
Using general procedure D: N-(2-pyridinylmethyl)-N′-[2-(tert-butoxycarbonyl)-1H-benzimidazol-2-ylmethyl]-N′-(4-methoxy-5,6,7,8-tetrahydro-8-quinolinyl)-1,4-benzenedimethanamine (0.052 g) was converted to the corresponding hydrobromide salt with simultaneous de-protection of the BOC group. The salt was purified by re-precipitation from methanol/ether to give AMD9343 as an orange-brown solid (0.055 g). 1H NMR (D2O) □ 1.75–1.84 (m, 1H), 2.09–2.21 (m, 2H), 2.34–2.39 (m, 1H), 2.58–2.69 (m, 1H), 2.88 (br d, 1H, J=16.5 Hz), 3.74–3.86 (m, 4H), 4.12 (s, 3H), 4.18 (s, 2H), 4.40 (d, 1H, J=16.5 Hz), 4.58 (d, 1H, J=16.5 Hz), 4.65 (dd, 1H, J=6.6, 9.9 Hz), 7.04 (d, 2H, J=7.8 Hz), 7.23 (d, 2H, J=7.8 Hz), 7.37 (dd, 2H, J=6.0, 3.0 Hz), 7.42 (d, 1H, J=6.9 Hz), 7.53 (dd, 2H, J=6.0, 3.0 Hz), 7.70 (d, 1H, J=7.8 Hz), 7.76 (dd, 1H, J=6.3, 6.3 Hz), 8.24 (ddd, 1H, J=7.8, 7.8, 1.2 Hz), 8.64 (d, 1H, J=6.9 Hz), 8.68 (d, 1H, J=5.1 Hz); 13C NMR (D2O) □ 19.77, 20.61, 21.83, 48.65, 50.03, 50.49, 56.65, 58.18, 62.92, 107.71, 113.89 (2 carbons), 126.61 (2 carbons), 126.70, 128.63, 129.93, 130.19 (2 carbons), 130.45, 130.90 (2 carbons), 138.41, 141.43 (2 carbons), 143.49 (2 carbons), 146.79, 147.64, 149.67, 151.86, 171.08; ES-MS m/z 519 (M+H). Anal. Calcd. for C32H34N6O.4.0HBr.4.2H2O: C, 41.87; H, 5.09; N, 9.15; Br, 34.82. Found: C, 41.84; H, 4.79; N, 9.02; Br, 34.85.
EXAMPLE: 45




AMD9358: Preparation of N-(2-pyridinylmethyl)-N′-(4-methoxy-5,6,7,8-tetrahydro-8-quinolinyl)-1,4-benzenedimethanamine (hydrobromide salt)
N-(2-pyridinylmethyl)-N′-(4-methoxy-5,6,7,8-tetrahydro-8-quinolinyl)-1,4-benzenedimethanamine
Using general procedure C: N-(2-pyridinylmethyl)-N-(2-nitrobenzenesulfonyl)-N′-(4-methoxy-5,6,7,8-tetrahydro-8-quinolinyl)-1,4-benzenedimethanamine (0.269 g, 0.50 mmol) was treated with thiophenol (0.35 mL, 3.41 mmol) and K2CO3 (0.757 g, 5.48 mmol) in CH3CN (10 mL). Purification of the crude material by radial chromatography on silica gel (2 mm plate, 20:1:1 CH2Cl2—CH3OH—NH4OH) provided 0.158 g (82%) of the title compound as a yellow oil. 1H NMR (CDCl3) □ 1.61–1.80 (m, 2H), 1.98–2.17 (m, 2H), 2.56–2.70 (m, 2H), 3.79–3.83 (m, 6H), 3.88–3.98 (m, 4H), 6.60 (d, 1H, J=5.7 Hz). 7.15 (dd, 1H, J=5.1, 6.9 Hz), 7.23–7.41 (m, 5H) 7.63 (ddd, 1H, J=7.8, 7.8, 1.8 Hz), 8.30 (d, 1H, J=5.7 Hz); 8.55 (d, 1H, J=3.9 Hz);
Using general procedure D: Conversion of the free base (0.051 g, 0.13 mmol) to the hydrobromide salt, followed by re-precipitation of the intermediate solid from methanol/ether, gave AMD9358 as a white solid (0.078 g). 1H NMR (D2O) □ 1.80–1.97 (m, 1H), 2.04–2.22 (m, 2H), 2.48–2.55 (m, 1H), 2.64–2.76 (m, 1H), 2.90–2.98 (m, 1H), 4.13 (s, 3H), 4.42 (s, 2H), 4.43 (d, 1H, J=12.9 Hz), 4.57 (s, 2H), 4.61 (d, 1H, J=12.9 Hz), 4.87 (dd, 1H, J=3.3, 3.6 Hz), 7.49 (d, 1H, J=7.2 Hz), 7.54–7.62 (m, 4H), 7.76–7.85 (m, 2H), 8.27 (ddd, 1H, J=7.8, 7.8, 1.8 Hz), 8.59 (d, 1H, J=6.9 Hz), 8.71 (dd, 1H, J=5.4, 0.9 Hz); 13C NMR (D2O) □ 15.03, 21.07, 23.35, 49.07, 50.18, 51.28, 53.53, 58.51, 109.11, 126.81 (2 carbons), 129.20, 131.30 (2 carbons), 131.48 (2 carbons), 131.99, 132.32, 141.80, 143.11, 143.80, 146.67, 147.63, 171.67; ES-MS m/z 389 (M+H). Anal. Calcd. for C24H28N4O.4.0HBr.2.6H2O: C, 37.98; H, 4.94; N, 7.38; Br, 42.11. Found: C, 38.15; H, 4.93; N, 7.26; Br, 41.97.
EXAMPLE: 46




AMD9359: Preparation of N-(2-pyridinylmethyl)-N′-(5,6,7,8-tetrahydro-1H-quinol-4-on-8-yl)-1,4-benzenedimethanamine (hydrobromide salt)
Using a modification of general procedure D: N-(2-pyridinylmethyl)-N′-(4-methoxy-5,6,7,8-tetrahydro-8-quinolinyl)-1,4-benzenedimethanamine (0.102 g, 0.26 mmol) was dissolved in glacial acetic acid (2 mL), treated with HBr saturated acetic acid (2 mL) and heated to reflux for 22 hours. The reaction mixture was cooled to room temperature. The salts were precipitated in the usual manner giving 0.166 g the title compound AMD9359 as a beige solid. 1H NMR (D2O) □ 1.80–1.96 (m, 1H), 2.06–2.22 (m, 2H), 2.47–2.53 (m, 1H), 2.61–2.73 (m, 1H), 2.83–2.98 (m, 1H), 4.10–4.45 (m, 3H), 4.58–4.62 (m, 3H), 4.79–4.83 (m, 1H, overlaps with HOD), 7.20 (d, 1H, J=6.6 Hz), 7.55–7.62 (m, 4H), 7.79–7.88 (m, 2H), 8.28–8.36 (m, 2H), 8.72 (d, 1H, J=5.4 Hz); 13C NMR (D2O) □ 15.15, 21.03, 23.47, 48.87, 50.13, 51.32, 53.61, 113.04, 126.98, 127.02, 128.07, 131.30 (2 carbons), 131.46 (2 carbons), 132.03, 132.24, 141.54, 142.25, 144.26, 146.34, 147.34, 172.04; ES-MS m/z 375 (M+H). Anal. Calcd. for C23H26N4O.4.0HBr.2.4H2O: C, 37.26; H, 4.73; N, 7.56; Br, 43.11. Found: C, 37.47; H, 4.71; N, 7.56; Br, 42.81.
EXAMPLE: 47




AMD9460: Preparation of N-(2-pyridinylmethyl)-N′-(5,6,7,8-tetrahydro-1H-quinol-2-on-8-yl)-1,4-benzenedimethanamine (hydrobromide salt)
8-amino-5,6,7,8-tetrahydro-2-quinolone
Following a modification of the procedure described by Meidert et al. German Patent DE 78–2840437: To a warm (35° C.) solution of 3,4,5,6,7,8-hexahydro-2(1H)-quinolone (5.18 g, 34.3 mmol) in 1,2-dichloroethane (52 mL) was added, by syringe pump (over 4 hours), a solution of bromine (15.61 g, 97.67 mmol) in 1,2-dichloroethane (45 mL). After the addition of bromine was complete, the reaction mixture was warmed to 60° C. and the mixture was maintained at that temperature for 10 minutes to allow the escape of hydrogen bromide gas. The reaction mixture was cooled to room temperature and a stream of nitrogen gas was blown over the solution for 1 hour. The mixture was concentrated and dried under vacuum overnight. The resultant orange gummy solid was dissolved in CH2Cl2 (100 mL) and treated with saturated aqueous NaHCO3 (50 mL) until basic (pH  ̃8) to litmus paper. The phases were separated and the aqueous phase was extracted with CH2Cl2 (3×50 mL). The combined organic extracts were dried (Na2SO4) and concentrated. The crude material was purified by column chromatography on silica gel (10:1 CH2Cl2-MeOH followed by 4:1 CH2Cl2-MeOH) and provided 8.64 g of an off-white solid.
The solid was dissolved in DMF (135 mL), treated with NaN3 (5.07 g, 78.00 mmol), and heated to 60° C. for 2 days. The reaction mixture was cooled to room temperature and diluted with ethyl acetate (270 mL), brine (135 mL), and water (85 mL). The phases were separated and the aqueous phase was extracted with ethyl acetate (2×100 mL). The combined organic extracts were washed with brine (4×50 mL), dried (MgSO4), and concentrated. Purification of the crude material by column chromatography on silica gel (10:1 CH2Cl2-MeOH) provided 4.90 g of a brown paste. This was used without further purification.
The brown paste was dissolved in MeOH (100 mL) and hydrogenated (30 psi) over palladium, 10 wt. % on activated carbon (0.503 g). The mixture was vacuum filter through celite and the cake was washed with methanol. The combined filtrates were evaporated under reduced pressure and the residual oil was purified by column chromatography on silica gel (10:1 CH2Cl2-MeOH followed by 10:1:1 CH2Cl2-MeOH—NH4OH) to give 0.731 g (10%) of 8-amino-5,6,7,8-tetrahydro-2-quinolone as a blue solid. 1H NMR (CDCl3) □ 1.53–1.71 (m, 2H), 1.83–1.90 (m, 1H), 2.03–2.09 (m, 1H), 2.38–2.65 (m, 2H), 3.79 (dd, 1H, J=5.7, 6.9 Hz), 6.39 (d, 1H, J=9.0 Hz). 7.17 (d, 1H, J=9.0 Hz); 13C NMR (CDCl3) □ 20.15, 26.27, 32.78, 47.49, 114.44, 118.30, 143.60, 144.99, 164.28; ES-MS m/z 165 (M+H).
Using General Procedure B: Reaction of 8-amino-5,6,7,8-tetrahydro-2-quinolone (0.600 g, 3.66 mmol) and N-[1-methylene-4-(carboxaldehyde)phenylene]-N-(tert-butoxycarbonyl)-2-(aminomethyl)pyridine (1.062 g, 3.23 mmol) with NaBH(OAc)3 (1.566 g, 7.38 mmol) in CH2Cl2 (18 mL) for 16 hours followed by purification of the crude material by column chromatography on silica gel (20:1 CH2Cl2-MeOH followed by 20:1:1 CH2Cl2-MeOH—NH4OH) provided 1.09 g (71%) of N-(2-pyridinylmethyl)-N-(tert-butoxycarbonyl)-N′-(5,6,7,8-tetrahydro-1H-quinol-2-on-8-yl)-1,4-benzenedimethanamine as a white solid.
Using general procedure D: Conversion of the white solid from above (0.101 g) to the hydrobromide salt with simultaneous removal of the BOC-protecting group, followed by re-precipitation of the intermediate solid from methanol/ether, gave AMD9460 (0.113 g) as a white solid. 1H NMR (D2O) □ 1.86–1.92 (m, 2H), 2.11–2.21 (m, 1H), 2.27–2.35 (m, 1H), 2.54–2.74 (m, 2H), 4.38 (d, 1H, J=13.2 Hz), 4.41 (s, 2H), 4.48 (d, 1H, J=13.2 Hz), 4.52 (dd, 1H, J=4.5, 4.5 Hz), 4.57 (s, 2H), 6.60 (d, 1H, J=9.0 Hz), 7.51–7.64 (m, 5H), 7.77–7.85 (m, 2H), 8.26–8.31 (m, 1H), 8.72 (d, 1H, J=4.8 Hz); 13C NMR (D2O) □ 17.27, 23.93, 25.39, 48.90, 49.21, 51.27, 53.80, 120.35, 122.23, 126.87, 131.24, 131.28, 132.08, 132.51, 134.73, 144.04, 145.98, 146.48, 147.49, 164.26; ES-MS m/z 375 (M+H). Anal. Calcd. for C23H26N4O.4.0HBr.2.0H2O: C, 37.63; H, 4.67; N, 7.63; Br, 43.53. Found: C, 37.73; H, 4.74; N, 7.53; Br, 43.37.
EXAMPLE: 48




AMD9542: Preparation of (3-methoxy-5,6,7,8-tetrahydroquinolin-8-yl)-(4-{[(pyridin-2-ylmethyl)-amino]-methyl}-benzyl)-amine (hydrobromide salt)
Preparation of (3-methoxy-5,6,7,8-tetrahydroquinolin-8-yl)-alcohol
A solution of 3-bromoquinoline (22.54 g, 108 mmol) in anhydrous DMF (110 mL) was treated with sodium methoxide (11.70 g, 217 mmol) and stirred at 80° C. for 16 hours. The reaction mixture was then concentrated and the residue taken up in ethyl acetate (300 mL) and water (60 mL). The organic phase was separated, washed with brine (2×60 mL), dried (MgSO4), filtered, concentrated and purified by column chromatography on silica gel (ethyl acetate/hexane; 1:3) to give 3-methoxyquinoline (1.06 g, 6%). 1H NMR (CDCl3) δ 3.95 (s, 3H), 7.38 (d, 1H, J=1.5 Hz), 7.54 (m, 2H), 7.72 (d, 1H, J=7.5 Hz), 8.04 (d, 1H, J=7.5 Hz), 8.67 (d, 1H, J=1.5 Hz).
To a solution of 3-methoxyquinoline (1.06 g, 6.7 mmol) in TFA (22 mL) under nitrogen was added platinum oxide (225 mg, 1.3 mmol) and the suspension bubbled with hydrogen gas 16 h at 60° C. The mixture was then cooled to room temperature, neutralized to pH 12 with 10 N NaOH and extracted with CH2Cl2 (3×50 mL). The organic extracts were dried (MgSO4), filtered, concentrated and purified by column chromatography on silica gel (ethyl acetate/hexane; 1:2) to give the desired 3-methoxy-5,6,7,8-tetrahydroquinoline (0.95 g, 87%). 1H NMR (CDCl3) δ 1.77 (m, 2H), 1.85 (m, 2H), 2.75 (t, 2H, J=6.0 Hz), 2.85 (t, 2H, J=6.0 Hz), 3.81 (s, 3H), 6.88 (d, 1H, J=1.5 Hz), 8.07 (d, 1H, J=1.5 Hz).
To a solution of 3-methoxy-5,6,7,8-tetrahydroquinoline (0.95 g, 5.8 mmol) in acetic acid (12 mL) was added hydrogen peroxide (30%, 0.60 mL, 5.8 mmol) and the reaction heated to 70° C. for 4 h. A second equivalent of hydrogen peroxide (30%, 0.60 mL, 5.8 mmol) was then added and the solution stirred another 16 h at 70° C. The mixture was concentrated under reduced pressure to provide the desired N-oxide salt as a yellow crystalline solid that was used without purification in the next reaction. 1H NMR (CDCl3) δ 1.77 (m, 2H), 1.85 (m, 2H), 2.75 (t, 2H, J=6.0 Hz), 2.90 (t, 2H, J=6.0 Hz), 3.80 (s, 3H), 6.76 (d, 1H, J=1.5 Hz), 8.12 (d, 1H, J=1.5 Hz).
A solution of the N-oxide from above in acetic anhydride (4.76 mL, 50.5 mmol) was heated to 90° C. for 4.5 h. The mixture was concentrated under reduced pressure and the resultant crude brown oil was used immediately in the next reaction without further purification. 1H NMR (CDCl3) δ 1.83 (m, 2H), 2.09 (s, 3H), 2.11 (m, 2H), 2.80 (m, 3H), 3.84 (s, 3H), 5.95 (t, 1H, J=4.5 Hz), 6.95 (d, 1H, J=1.5 Hz), 8.22 (d, 1H, J=1.5 Hz).
A solution of 8-acetyl-3-methoxy-5,6,7,8-tetrahydroquinoline in anhydrous MeOH (6 mL) was treated with K2CO3 and stirred at room temperature for 16 h. Water (15 ml) was added and the mixture was extracted with CH2Cl2 (2×20 mL). The organic phase was then dried (MgSO4), filtered, concentrated and purified by column chromatography on silica gel (5% MeOH/CH2Cl2) to give (3-methoxy-5,6,7,8-tetrahydroquinolin-8-yl)-alcohol as a brown oil (0.68 g, 65% 3 steps). 1H NMR (CDCl3) δ 1.81 (m, 2H), 2.00 (m, 1H), 2.20 (m, 1H), 2.78 (m, 2H), 3.83 (s, 3H), 3.95 (s, 1H (OH)), 4.70 (t, 1H, J=7.5 Hz), 6.93 (d, 1H, J=3.0 Hz), 8.12 (d, 1H, J=3.0 Hz).
Following General Procedure E: To a solution of (3-methoxy-5,6,7,8-tetrahydroquinolin-8-yl)-alcohol (0.66 g, 3.7 mmol) and triethylamine (0.87 mL, 6.3 mmol) in CH2Cl2 (12 mL) was added methanesulfonyl chloride (0.45 mL, 3.7 mmol) and the mixture stirred at room temperature for 1 hour. The resultant crude mesylate (0.55 g) was used without further purification in the next reaction.
To a solution of the crude material from above (0.55 g) in anhydrous DMF (10 mL) was added sodium azide (0.50 g, 7.4 mmol) and the mixture heated at 60° C. for 16 h. The reaction mixture was then concentrated and diluted with brine (4 mL) and EtOAc (10 mL). The organic phase was washed with brine (2×5 mL), dried (MgSO4), filtered, concentrated and purified by column chromatography on silica gel (3% MeOH/CH2Cl2) to give the desired (3-methoxy-5,6,7,8-tetrahydroquinolin-8-yl)-azide (0.33 g, 55%). 1H NMR (CDCl3) δ 1.81 (m, 1H), 2.00 (m, 3H), 2.80 (m, 2H), 3.84 (s, 3H), 4.69 (t, 1H, J=4.5 Hz), 6.93 (d, 1H, J=1.5 Hz), 8.20 (d, 1H, J=1.5 Hz).
To a solution of (3-methoxy-5,6,7,8-tetrahydroquinolin-8-yl)-azide (0.33 g, 1.6 mmol) in MeOH (16 mL) was added palladium on activated carbon, (10%, 50 mg) and the reaction mixture stirred under 1 atmosphere of hydrogen for 4 h. The mixture was filtered through celite, the cake washed with methanol and the solvent from the eluent removed in vacuo to give crude (3-methoxy-5,6,7,8-tetrahydroquinolin-8-yl)-amine as a yellow oil (0.28 g, 96%). 1H NMR (CDCl3) δ 1.75 (m, 2H), 1.97 (m, 1H), 2.17 (m, 1H), 2.77 (m, 2H), 3.81 (s, 3H), 3.98 (t, 1H, J=4.5 Hz), 6.88 (d, 1H, J=1.5 Hz), 8.12 (d, 1H, J=1.5 Hz).
Using General Procedure B: To a solution of (3-methoxy-5,6,7,8-tetrahydroquinolin-8-yl)-amine (0.27 g, 1.5 mmol) and 4-[[N-(t-butoxycarbonyl)-N-(2-pyridinylmethyl)amino]methyl]benzaldehyde (prepared as described by Bridger et al, U.S. patent application Ser. No. 09/535,314) (0.57 g, 1.7 mmol) in CH2Cl2 (15 mL) was added NaBH(OAc)3 (0.48 g, 2.3 mmol) and the mixture stirred at room temperature for 16 h. Purification of the crude material by column chromatography on silica gel (5% MeOH/CH2Cl2) gave {4-[(3-methoxy-5,6,7,8-tetrahydroquinolin-8-ylamino)-methyl]-benzyl}-pyridin-2-ylmethyl-carbamic acid tert-butyl ester (0.43 g, 58%). 1H NMR (CDCl3) δ 1.45 (m, 9H), 1.77 (m, 2H), 2.00 (m, 1H), 2.12 (m, 1H), 2.77 (m, 2H), 3.80 (m, 1H), 3.81 (s, 3H), 3.85 (d, 1H, J=12.0 Hz), 3.95 (d, 1H, J=12.0 Hz), 4.44 (br s, 2H), 4.55 (br s, 2H), 6.88 (d, 1H, J=1.5 Hz), 7.15 (m, 2H), 7.23 (br s, 2H), 7.34 (d, 2H, J=6.0 Hz), 7.62 (t, 1H, J=7.5 Hz), 8.11 (d, 1H, J=1.5 Hz), 8.52 (d, 1H, J=6.0 Hz).
Using General Procedure D: Conversion of the material from above (60 mg) to the hydrobromide salt with simultaneous removal of the Boc group provided AMD9542 (0.069 g) as a white solid. 1H NMR (D2O) 1.86 (m, 1H), 1.97 (m, 1H), 2.14 (m, 1H), 2.35 (m, 1H), 2.87 (m, 2H), 3.87 (s, 3H), 4.40 (s, 4H), 4.52 (s, 2H), 4.55 (m, 1H), 7.39 (d, 1H, J=2.1 Hz), 7.55 (m, 4H), 7.71 (m, 2H), 8.19 (m, 2H), 8.67 (m, 1H, J=4.8 Hz); 13C NMR (D2O) □ 18.17, 24.89, 27.55, 48.67, 48.78, 51.37, 55.79, 56.66, 125.28, 127.09, 127.17, 131.19 (2C), 131.27 (2C), 131.92, 132.76, 134.36, 137.93, 139.19, 144.61, 146.07, 147.15, 156.80. ES-MS m/z 389 (M+H). Anal. Calcd. for C24H28N4O.4.0HBr.2.6H2O: C, 38.06; H, 4.95; N, 7.40; Br, 41.97. Found: C, 38.13; H, 5.04; N, 7.14; Br, 42.01.
EXAMPLE: 49




AMD9543: Preparation of (1H-Benzimidazole-2-ylmethyl)-(3-methoxy-5,6,7,8-tetrahydroquinolin-8-yl)-(4-{[(pyridin-2-ylmethyl)-amino]-methyl}-benzyl)-amine (hydrobromide salt)
To a solution of {4-[(3-methoxy-5,6,7,8-tetrahydroquinolin-8-ylamino)-methyl]-benzyl}-pyridin-2-ylmethyl-carbamic acid tert-butyl ester (81 mg, 0.17 mmol), N,N-diisopropylethylamine (0.05 mL, 0.18 mmol) and potassium iodide (10 mg, 0.04 mmol) in anhydrous CH3CN (2 mL) was added (N-tert-butoxycarbonyl)-2-chloromethylbenzimidazole (50 mg, 0.18 mmol) and the reaction stirred at 60° C. for 16 h. Purification of the crude product by column chromatography on silica gel (5% MeOH/CH2Cl2) gave the desired 2-{[{4-[(tert-butoxycarbonyl-pyridin-2-ylmethyl-amino)-methyl]-benzyl}-(3-methoxy-5,6,7,8-tetrahydroquinolin-8-yl)-amino]-methyl}-benzimidazole-1-carboxylic acid tert-butyl ester as a pale yellow solid (69 mg, 58%). 1H NMR (CDCl3) δ 1.45 (m, 9H), 1.67 (m, 9H), 1.70 (m, 1H), 1.97 (m, 2H), 2.17 (m, 1H), 2.65 (m, 1H), 2.78 (m, 1H), 3.78 (d, 1H, J=15.0 Hz), 3.80 (s, 3H), 4.28 (m, 4H), 4.40 (m, 1H), 4.60 (s, 2H), 6.79 (d, 1H, J=1.5 Hz), 6.90 (m, 2H), 7.13 (m, 2H), 7.18 (d, 4H, J=6.0 Hz), 7.59 (d, 2H, J=6.0 Hz), 7.68 (m, 1H), 8.16 (d, 1H, J=1.5 Hz), 8.51 (d, 1H, J=2.0 Hz).
Using General Procedure D: Conversion of the solid from above to the hydrobromide salt with simultaneous removal of the Boc group provided AMD9543 (0.064 g) as a white solid. 1H NMR (D2O) [1.85 (m, 1H), 2.18 (m, 2H), 2.38 (m, 1H), 2.99 (m, 2H), 3.78 (s, 3H), 3.79 (m, 1H), 4.00 (s, 3H), 4.01 (s, 2H), 4.41 (d, 1H, J=16.8 Hz), 4.59 (d, 1H, J=16.8 Hz), 4.66 (m, 1H), 7.02 (d, 2H, J=8.1 Hz), 7.20 (d, 2H, J=8.1 Hz), 7.33 (m, 2H), 7.45 (d, 1H, J=8.1 Hz), 7.51 (m, 2H), 7.55 (d, 1H, J=8.1 Hz), 7.99 (m, 2H), 8.42 (d, 1H, J=2.7 Hz), 8.60 (d, 1H, J=4.2 Hz); 13C NMR (D2O) □ 20.53, 21.10, 28.22, 49.24, 50.02, 50.30, 56.54, 57.47, 62.77, 113.86 (2C), 125.94, 126.13, 126.61 (2C), 127.00, 130.04, 130.17 (3C), 130.44, 130.83 (2C), 132.03, 138.35, 141.88, 141.96, 143.06, 147.83, 148.53, 151.53, 157.35. ES-MS m/z 519 (M+H). Anal. Calcd. for C32H34N6O.4.0HBr.2.9H2O: C, 42.94; H, 4.93; N, 9.39; Br, 35.78. Found: C, 42.96; H, 4.79; N, 9.39; Br, 35.78.
EXAMPLE: 50




AMD9522: Preparation of (1H-Benzimidazol-2-ylmethyl)-[2-(3-{[(pyridin-2-ylmethyl)-amino]-methyl}-phenyl)-ethyl]-(5,6,7,8-tetrahydroquinolin-8-yl)-amine (hydrobromide salt)
Preparation of 6,7-Dihydro-5H-quinolin-8-one




To a stirred solution of 8-hydroxy-5,6,7,8-tetrahydroquinoline (13.96 g, 93.6 mmol) in dry CH2Cl2 (400 mL) was added activated manganese dioxide (85% purity, 82.22 g, 804 mmol). The resulting heterogeneous mixture was stirred 18 h, at which point the black slurry was filtered through a cake of celite and washed with CH2Cl2 (3×50 mL). The combined washings were concentrated to afford 11.27 g (82%) of the title compound as a pale yellow solid, which was used in subsequent reactions without further purification. 1H NMR (CDCl3) δ 2.17–2.25 (m, 2H), 2.82 (t, 2H, J=7 Hz), 3.04 (t, 2H, J=6 Hz), 7.37 (dd, 1H, J=9, 6 Hz), 7.66 (dd, 1H, J=9, 1 Hz), 8.71 (dd, 1H, J=6, 1 Hz); 13C NMR (CDCl3) δ 22.2, 28.6, 39.2, 126.6, 137.3, 140.5, 147.6, 148.6, 196.5. ES-MS m/z 148 (M+H).
Preparation of 2-(3-{[(pyridin-2-ylmethyl)-2-nitrobenzenesulfonylamino]-methyl}-phenyl)-ethylamine




Preparation of 3-{[(Pyridin-2-ylmethyl)-N-(2-nitrobenzenesylfonyl)-amino]-methyl}-benzyl alcohol




To a solution of 2-aminomethylpyridine (2.05 mL, 20.0 mmol) in CH3CN (80 mL) was added K2CO3 (4.14 g, 30.0 mmol) followed by 2-nitrobenzenesulfonyl chloride (4.88 g, 22.0 mmol) and the reaction stirred at room temperature for 3 h. The mixture was concentrated under reduced pressure and diluted with CH2Cl2 (40 mL) and saturated aqueous NH4Cl (40 mL). The phases were separated, the aqueous phase extracted with CH2Cl2 (2×20 mL) and the combined organic extracts dried (Na2SO4), filtered and concentrated. Purification of the crude material by column chromatography on silica gel (CH2Cl2/MeOH, 19:1 then 9:1) afforded the nosyl-protected amine (5.07 g, 86%). 1H NMR (CDCl3): δ 4.43 (d, 2H, J=6 Hz), 6.63 (br s, 1H), 7.14 (dd, 1H, J=9, 6 Hz), 7.25 (d, 1H, J=6 Hz), 7.61–7.69 (m, 3H), 7.87 (d, 1H, J=9 Hz), 8.07 (d, 1H, J=9 Hz), 8.39 (d, 1H, J=5.7 Hz).
To a solution of the nosyl-protected amine from above (1.47 g, 5.00 mmol) in CH3CN (60 mL) was K2CO3 (1.38 g, 10.0 mmol) and methyl 3-bromomethylbenzoate (1.14 g, 5.00 mmol) and the mixture stirred at 50° C. overnight. The mixture was concentrated under reduced pressure and diluted with CH2Cl2 (40 mL) and saturated aqueous NH4Cl (40 mL). The phases were separated, the aqueous phase extracted with CH2Cl2 (2×20 mL) and the combined organic extracts dried (Na2SO4), filtered and concentrated. Purification of the crude material by column chromatography on silica gel (CH2Cl2/MeOH, 19:1) afforded the alkylated material (2.18 g, 98%). 1H NMR (CDCl3): δ 3.89 (s, 3H), 4.61 (s, 2H), 4.66 (s, 2H), 7.12 (dd, 1H, J=9, 6 Hz), 7.21–7.34 (m, 2H), 7.43 (d, 1H, J=9 Hz), 7.54–7.58 (m, 2H), 7.67 (d, 2H, J=3.9 Hz), 7.73 (s, 1H), 7.88 (d, 1H, J=9 Hz), 7.99 (d, 1H, J=9 Hz), 8.41 (d, 1H, J=5.7 Hz).
To a solution of the ester from above (2.18 g, 4.94 mmol) in CH2Cl2 (50 mL) at −78° C. was added a solution of DIBAL-H (15 mL, 1.0 M in CH2Cl2, 15 mmol) and the reaction stirred at −78° C. for 1.5 h. The mixture was quenched with a saturated potassium sodium tartrate solution (30 mL) and the biphasic mixture stirred vigorously overnight. The phases were separated and the organic layer dried (MgSO4), filtered, concentrated and purified by column chromatography on silica gel (CH2Cl2/MeOH, 19:1) to give the desired title alcohol (1.90 g, 92%). 1H NMR (CDCl3): δ 4.57 (s, 2H), 4.59 (s, 2H), 7.08–7.12 (m, 2H), 7.20–7.26 (m, 4H), 7.54–7.59 (m, 2H), 7.68 (d, 2H, J=3 Hz), 7.98 (d, 1H, J=9 Hz), 8.39 (d, 1H, J=5.7 Hz).
To a stirred solution of 3-{[(Pyridin-2-ylmethyl)-N-(2-nitrobenzenesylfonyl)-amino]-methyl}-benzyl alcohol (1.06 g, 2.57 mmol) in CH2Cl2 (30 mL) was added methanesulfonyl chloride (0.25 mL, 3.34 mmol) and triethylamine (0.54 mL, 3.85 mmol) and the resultant suspension stirred at room temperature for 2 h. The mixture was washed with aqueous ammonium chloride (1×30 mL) and the organic layer dried (Na2SO4) and concentrated under reduced pressure. The mesylate was used immediately in the next reaction without further purification as a 1 M stock solution in THF (2.5 mL).
To a stirred solution of the mesylate from above (1.1 mL of a 1 M stock solution in THF, 1.1 mmol) in benzene (15 mL) and water (5 mL) was added sodium cyanide (294 mg, 6 mmol) and cetyltrimethylammonium bromide (91 mg, 0.25 mmol). The reaction was heated to 80° C. and stirred overnight. After cooling, the reaction was extracted with ethyl acetate (3×15 mL). The combined organic fractions were dried (Na2SO4), concentrated under reduced pressure and purified by column chromatography on silica gel (CH2Cl2/MeOH, 19:1) to afford the desired nitrile (364 mg, 78%) as a yellow oil. 1H NMR (CDCl3) 3.64 (s, 2H), 4.59 (s, 4H), 7.20 (m, 6H), 7.57 (m, 2H), 7.67 (m, 2H), 7.97 (d, 2H, J=6.1 Hz), 8.48 (d, 1H, J=5.1 Hz).
To a solution of the nitrile from above (364 mg, 0.863 mmol) in THF (15 mL) was added borane (5 mL of a 1M solution in THF, 5 mmol) and the mixture heated at 50° C. for 3 h. The reaction was cooled, quenched with MeOH (5 mL) and stirred at room temperature for 30 minutes. The mixture was then concentrated under reduced pressure, diluted with 1N HCl (10 mL) and heated at 50° C. for 1 h. The mixture was cooled, diluted with 15% NaOH (to pH ̃12) and extracted with CH2Cl2 (3×15 mL). The combined organic fractions were dried (Na2SO4), concentrated under reduced pressure and purified by column chromatography on silica gel (CH2Cl2/MeOH, 19:1) to afford the title amine as a yellow foam (160 mg, 38%). 1H NMR (CDCl3) 2.84 (t, 2H, J=6.8 Hz), 3.02 (m, 2H), 3.67 (m, 2H (NH2)), 4.57 (s, 4H), 6.99–7.16 (m, 6H), 7.57–7.71 (m, 4H), 8.01 (d, 1H, J=8.1 Hz), 8.48 (d, 1H, J=4.9 Hz).
Using General Procedure B: To a solution of 2-(3-{[(pyridin-2-ylmethyl)-2-nitrobenzenesulfonylamino]-methyl}-phenyl)-ethylamine (255 mg, 0.6 mmol) and 6,7-dihydro-5H-quinolin-8-one (110 mg, 0.75 mmol) in CH2Cl2 (10 mL) was added sodium triacetoxyborohydride (190 mg, 0.9 mmol). Purification of the crude residue by column chromatography on silica gel (CH2Cl2/MeOH, 19:1) gave the N-alkylated product (192 mg, 57%). 1H NMR (CDCl3) 11.78–1.99 (m, 4H), 2.71–2.89 (m, 6H), 3.78 (t, 1H, J=5.8 Hz), 4.56 (s, 2H), 4.61 (s, 2H), 6.94–7.08 (m, 6H), 7.13 (s, 1H, J=5.8 Hz), 7.28 (d, 1H, J=8.1 Hz), 7.55 (m, 2H), 7.64 (m, 2H), 7.93 (d, 1H, J=8.1 Hz), 8.28 (d, 1H, J=5.2 Hz), 8.40 (d, 1H, J=4.9 Hz).
The material from above (192 mg, 0.345 mmol) was reacted with N-(tert-butoxycarbonyl)-2-chloromethylbenzimidazole (133 mg, 0.5 mmol) in CH3CN (4 mL) in the presence of N,N-diisopropylamine (0.09 mL, 0.5 mmol) at 60° C. for 16 h. Purification by column chromatography on silica gel (CH2Cl2/MeOH, 10:1) afforded N-(tert-butoxycarbonyl-1H-benzimidazol-2-ylmethyl)-[2-(3-{[(pyridin-2-ylmethyl)-2-nitrobenzenesulfonylamino]-methyl}-phenyl)-ethyl]-(5,6,7,8-tetrahydroquinolin-8-yl)-amine (160 mg, 59%) as a pale foam.
Using General Procedure C: To a solution of the material from above (160 mg, 0.203 mmol) in anhydrous CH3CN (5 mL) was added thiophenol (0.08 mL, 0.8 mmol) and potassium carbonate (140 mg, 1.01 mmol) and the mixture stirred at room temperature for 2 h. Purification of the crude product by column chromatography on silica gel (CH2Cl2/MeOH, 85:15) afforded the free amine (34 mg, 33%) as a pale foam. 1H NMR (CDCl3) 1.41 (s, 9H), 1.73 (m, 1H), 1.89 (dq, 1H, J=12.6, 2.4 Hz), 2.02 (m, 1H), 2.21 (m, 1H), 2.68 (dd, 2H, J=13.8, 6.3 Hz), 2.83 (m, 2H), 2.92 (m, 2H), 3.71 (s, 2H), 3.86 (s, 2H), 4.08 (m, 1H), 4.11 (d, 2H, J=7.1 Hz), 6.89 (dt, 1H, J=3.9, 1.5 Hz), 7.01 (s, 1H), 7.10–7.20 (m, 6H), 7.25 (d, 1H, J=6.0 Hz), 7.39 (d, 1H, J=7.8 Hz), 7.58 (m, 2H), 7.61 (dt, J=7.5, 1.5 Hz), 8.45 (d, 1H, J=4.2 Hz), 8.53 (d, 1H, J=4.3 Hz).
Using General Procedure D: Conversion of the foam from above (34 mg) to the hydrobromide salt with simultaneous removal of the BOC-protecting group, followed by re-precipitation of the intermediate solid from methanol/ether, gave AMD9522 as a white solid (28 mg). 1H NMR (D2O). □ 1.83 (m, 1H), 2.14 (t, 1H, J=13.5 Hz), 2.36 (m, 1H), 2.78 (m, 3H), 2.87 (m, 1H), 2.99 (m, 2H), 3.19 (m, 1H), 3.84 (m, 2H), 4.33 (m, 3H), 4.54 (m, 2H), 6.82 (d, 1H, J=9.0 Hz), 7.14–7.34 (m, 3H), 7.58 (m, 4H), 7.70 (m, 2H), 7.85 (dd, 1H, J=6.9, 5.8 Hz), 8.06 (m, 1H), 8.33 (d, 1H, J=7.8 Hz), 8.49 (d, 1H, J=5.1 Hz), 8.60 (m, 1H). 13C NMR (D2O) □ 20.44, 20.85, 27.70, 34.39, 48.86, 49.28, 51.08, 52.80, 62.01, 114.26, 125.89, 126.55, 126.96, 128.48, 129.94, 130.04, 130.43, 130.74, 130.89, 139.24, 140.49, 140.76, 143.25, 146.87, 147.82, 148.15, 150.90, 151.71. ES-MS m/z 503 (M+H); Anal. Calcd. for (C32H34N6×4 HBr×3.8H2O): C, 42.96; H, 5.14; N, 9.39; Br 35.72. Found: C, 43.22; H, 4.93; N, 9.39; Br, 35.38.
EXAMPLE: 51




AMD9611: Preparation of N-(benzoxazol-2-yl)-N′-(1H-benzimidazol-2-ylmethyl)-N′-(5,6,7,8-tetrahydro-8-quinolinyl)-1,4-benzenedimethanamine (hydrobromide salt)
Using the General N-Alkylation Procedure: To a stirred solution of N′-(1H-benzimidazol-2-ylmethyl)-N′-(5,6,7,8-tetrahydro-8-quinolinyl)-1,4-benzenedimethanamine (128 mg, 0.32 mmol) and triethylamine (100 ul, 0.72 mmol) in THF (5 mL) was added 2-chlorobenzoxazole (50 uL, 0.44 mmol) and the mixture was stirred at reflux for 16 h. Purification of the crude material by radial chromatography on silica gel (1 mm plate, CH2Cl2/MeOH/NH4OH, 125:1:1) afforded the desired amine (83 mg, 37%) as a yellow foam.
Using General Procedure D: Conversion of the foam from above (83 mg, 0.16 mmol) to the hydrobromide salt followed by re-precipitation of the intermediate solid from methanol/ether gave AMD9611 (105 mg, 82%) as a white solid. 1H NMR (D2O) 1.79–1.96 (m, 1H), 2.14–2.32 (m, 2H), 2.36–2.48 (m, 1H), 2.98–3.06 (m, 2H), 3.73 (d, 1H, J=12.2 Hz), 3.82 (d, 1H, J=12.6 Hz), 4.20 (s, 2H), 4.43 (d, 1H, J=16.6 Hz), 4.60 (d, 1H, J=16.7 Hz), 7.02 (d, 2H, J=8.0 Hz), 7.10–7.20 (m, 4H), 7.31–7.46 (m, 5H), 7.53 (d, 1H, J=7.9 Hz), 7.90 (dd, 1H, J=7.9, 5.8 Hz), 8.37 (d, 1H, J=7.8 Hz), 8.74 (d, 1H, J=5.8 Hz). 13C NMR (D2O) 20.44, 20.91, 27.83, 45.70, 50.25, 56.67, 63.30, 111.27, 113.11, 113.53 (2 carbons), 124.83, 126.06, 126.21 (2 carbons), 126.64, 128.07 (2 carbons), 130.35, 130.65 (2 carbons), 135.63, 136.43, 139.62 (2 carbons), 140.98, 148.24 (2 carbons), 150.85, 151.87. ES-MS m/z 515 (M+H) Anal Calc. for C32H30N6O.3.0HBr.2.1H2O: C, 48.33; H, 4.72; N, 10.57; Br, 30.15. Found: C, 48.47; H, 4.70; N, 10.40; Br, 30.05.
EXAMPLE: 52




AMD9718: Preparation of Bis[N′-(1H-benzimidazol-2-ylmethyl)-N′-(5,6,7,8-tetrahydro-8-quinolinyl)]-1,4-benzenedimethanamine (hydrobromide salt)
To a stirred solution of 8-amino-5,6,7,8-tetrahydroquinoline (0.312 g, 2.1 mmol) in dry MeOH (10 mL) was added terephthaldehyde (0.142 g, 1.05 mmol) and the mixture stirred at room temperature for 2 h. The reaction mixture was concentrated under reduced pressure and the residue analyzed by 1H NMR for imine formation. To a solution of the residue in dry MeOH/CH2Cl2 (1:1, 12 mL) was added sodium borohydride (80 mg, 2.1 mmol) and the mixture stirred overnight at room temperature (see General Procedures XX). The desired dimer (0.345 g, 83%) was obtained as a yellow oil and used in the next step without any further purification.
Using the General alkylation Procedure: To a stirred solution of the dimer (0.193 g, 0.48 mmol) in dry CH3CN (5 mL) was added 1-N-tert-butoxycarbonyl-2-chloromethylbenzimidazole (0.260 g, 0.97 mmol), N,N-diisopropylethylamine (0.34 mL, 1.9 mmol) and potassium iodide (12 mg, 0.048 mmol). The mixture was stirred under an argon atmosphere at 60° C. overnight. Purification of the crude material by column chromatography on silica gel (CH2Cl2/MeOH, 97:3 followed by 96:4 and 93:7) gave the alkylated product (0.218 g, 53%).
The purified material was dissolved in dry CH2Cl2 (2.5 mL) and trifluoroacetic acid (2 mL) was added. The resultant mixture was stirred for 2.5 h at room temperature. The reaction mixture was diluted with CH2Cl2 (20 mL) and then concentrated in vacuo to remove any excess trifluoroacetic acid. The concentrate was diluted with CH2Cl2 (25 mL) and 2N NaOH (25 mL), the aqueous layer extracted with CH2Cl2 (2×15 mL), the phases separated and the combined organic extracts dried (Na2SO4), filtered and concentrated in vacuo. Purification of the crude material by radial chromatography on a 1 mm TLC grade silica gel plate (CH2Cl2/MeOH/NH4OH, 100:1:1) afforded the deprotected material (56 mg, 34%).
Using General Procedure D: Conversion of the free amine from above (56 mg, 0.085 mmol) to the hydrobromide salt with simultaneous removal of the Boc group gave AMD9718 (68 mg) as an off-white solid. 1H NMR (D2O) □ 1.70–1.91 (br m, 1H), 1.99–2.22 (br m, 2H), 2.23–2.38 (br m, 1H), 2.95–3.13 (br m, 3H), 3.34 (dd, 1H, J=12.9, 8.1 Hz), 4.16 (t, 1H, J=16.2 Hz), 4.41 (dd, 1H, J=16.5, 6.0 Hz), 4.56 (d, 1H, J=8.7 Hz), 6.69 (d, 2H, J=3.9 Hz), 7.18 (dd, 2H, J=7.8, 4.5 Hz), 7.33–7.50 (m, 2H), 7.95 (t, 1H, J=6.9 Hz), 8.42 (d, 1H, J=8.1 Hz), 8.72 (d, 1H, J=5.7 Hz; 13C NMR (D2O) 19.04, 19.43, 26.53, 48.31, 48.52, 54.48, 60.99, 61.09, 112.48, 124.90, 125.06, 128.15, 129.22, 134.75, 134.84, 139.74, 147.02, 149.49, 149.56, 150.22, 150.29; ES-MS m/z 659 (M+H); Anal. Calcd. for C42H42N8.4.0HBr.3.7H2O: C, 48.08; H, 5.13; N, 10.68; Br, 30.46. Found: C, 48.27; H, 5.09; N, 10.48; Br, 30.29.
EXAMPLE: 53




AMD9381: Preparation of N-(1H-benzimidazol-2-ylmethyl)-N-(5,6,7,8-tetrahydro-8-quinolinyl)-1,4-benzenedimethanamine
To a stirred solution of 8-amino-5,6,7,8-tetrahydroquinoline (24.3 g, 164 mmol) in dichloromethane (600 mL), at room temperature, was added 4-cyanobenzaldehyde (21.5 g, 164 mmol) and sodium triacetoxyborohydride (45 g, 210 mmol). After 42 hours, the reaction was quenched with 1N NaOH (250 mL). The phases were separated and the organic phase was washed once with brine (200 mL), dried (Na2SO4), and concentrated. Purification of the crude material by flash chromatography on silica gel (5% CH3OH/CH2Cl2) provided 30.9 g (72%) of N-(5,6,7,8-tetrahydro-8-quinolinyl)-4-cyanobenzylamine as a pale yellow solid.
The material from above (30.1 g, 114 mmol) was reacted with N-(tert-butoxycarbonyl)-2-chloromethylbenzimidazole (30.5 g, 114 mmol) in DMF in the presence of N,N-diisopropylethylamine, and the crude material was purified by flash chromatography on silica gel (3% CH3OH/CH2Cl2) to give 38.0 g (67%) of N-(N-(tert-butoxycarbonyl)benzimidazol-2-ylmethyl)-N-(5,6,7,8-tetrahydro-8-quinolinyl)-4-cyanobenzylamine as a pale orange foam.
The intermediate from above (35 g, 70.9 mmol) was dissolved in NH3 saturated methanol, treated with Raney nickel, and placed under 50 psi H2 on a Parr shaker, for 16 h. The mixture was filtered through Celite 521, concentrated, and purified by flash chromatography on silica gel (5% CH3OH/CH2Cl2) to give 25.1 g (90%) of N-(1H-benzimidazol-2-ylmethyl)-N-(5,6,7,8-tetrahydro-8-quinolinyl)-1,4-benzenedimethanamine (AMD9381) as a yellow powder. 1H NMR (CDCl3) δ 1.63–1.74 (m, 1H), 1.98–2.06 (m, 2H), 2.24–2.30 (m, 1H), 2.67–2.91 (m, 2H), 3.69 (s, 2H), 3.75 (s, 2H), 3.91–4.17 (m, 3H), 7.14–7.19 (m, 5H), 7.33 (d, 2H, J=7.5 Hz), 7.43 (d, 1H, J=7.5 Hz), 7.54–7.58 (m, 2H), 8.69 (d, 1H, J=4.2 Hz). 13C NMR (CDCl3) δ 21.66, 23.57, 29.53, 44.85, 49.00, 54.06, 60.93, 115.15, 115.26, 122.09(2), 122.66, 128.46(2), 129.36(2), 135.21, 137.71, 137.78, 138.75, 138.95, 147.12, 155.90, 157.35. ES-MS m/z 398 (M+H). Anal. Calcd. for C25H27N5O.0.6H2O.0.4CH2Cl2: C, 68.98H, 6.61; N, 15.83. Found: C, 69.34; H, 6.67; N, 15.82.
EXAMPLE: 54




AMD9398: Preparation of N-(5-butyl-2-pyridinylmethyl)-N′-(1H-benzimidazol-2-ylmethyl)-N′-(5,6,7,8-tetrahydro-8-quinolinyl)-1,4-benzenedimethanamine (hydrobromide salt)
Using general procedure B: N-(1H-benzimidazol-2-ylmethyl)-N-(5,6,7,8-tetrahydro-8-quinolinyl)-1,4-benzenedimethanamine (0.1258 g, 0.316 mmol) and 5-n-butylpyridine-2-carboxaldehyde (0.0603 g, 0.294 mmol) were reacted with NaBH(OAc)3 (0.0942 g, 0.444 mmol) in CH2Cl2 (2.5 mL). Purification of the crude material by radial chromatography (2 mm TLC plate, 50:1:1 CH2Cl2: CH3OH: NH4OH) provided 0.0713 g (45%) of AMD9398 (free base).
Using General Procedure D: the free base was converted to 0.1009 g (84%) of AMD9398. 1H NMR (D2O) 0.86 (t, 3H, J=7.4 Hz), 1.28 (sextet, 2H, J=7.4 Hz), 1.59 (pentet, 2H, J=7.4 Hz), 1.80–1.98 (m, 1H), 2.15–2.33 (m, 2H), 2.36–2.50 (m, 1H), 2.74 (t, 2H, J=7.4 Hz), 2.99–3.08 (m, 2H), 3.74–3.90 (m, 4H), 4.18 (s, 2H), 4.63 (d, 1H, J=16.8 Hz), 4.44 (d, 1H, J=16.2 Hz), 7.02 (d, 2H, J=7.9 Hz), 7.21 (d, 2H, J=7.9 Hz), 7.36 (dd, 2H, J=6.4, 3.3 Hz), 7.54 (dd, 2H, J=6.1, 3.0 Hz), 7.64 (d, 1H, J=8.3 Hz), 7.92 (t, 1H, J=6.9 Hz), 8.14 (dd, 1H, J=3.8, 1.5 Hz), 8.39 (d, 1H, J=7.9 Hz), 8.54 (s, 1H), 8.76 (d, 1H, J=5.6 Hz). 13C NMR (D2O) 13.46, 20.44, 20.95, 21.84, 27.85, 31.94, 32.49, 48.08, 50.19, 50.51, 56.68, 63.24, 113.90 (2 carbons), 126.15, 126.60 (2 carbons), 126.77, 129.96, 130.18 (2 carbons), 130.46 (2 carbons), 130.90 (2 carbons), 138.19, 139.70, 141.04, 143.03, 144.12, 144.19, 145.66, 148.32, 150.78, 151.78. ES-MS m/z 545 (M+H) Anal Calc. for C35H40N6.4.0HBr.2.9H2O: C, 45.66; H, 5.45; N, 9.13; Br, 34.72. Found: C, 45.58; H, 5.43; N, 9.00; Br, 34.80.
EXAMPLE: 55




AMD9399: Preparation of N-(3-hydroxy-2-pyridinylmethyl)-N′-(1H-benzimidazol-2-ylmethyl)-N′-(5,6,7,8-tetrahydro-8-quinolinyl)-1,4-benzenedimethanamine (hydrobromide salt)
Preparation of 3-hydroxypyridine-2-carboxaldehyde
To a stirred suspension of 3-hydroxypicolinic acid (5.0570 g, 36.35 mmol) in dry THF (150 mL) at room temperature was added BH3.THF (1.0 M, 145 mL, 145 mmol). The mixture was heated to 70° C. with stirring for 20 hrs, after which time the solution was allowed to cool to room temperature. Dry CH3OH (40 mL) was carefully added, then the mixture heated to 70° C. for 6 hrs. The mixture was concentrated and additional CH3OH (20 mL) was added. Evaporation of the solution for a second time gave 5.82 g of a light yellow foam.
The foam from above was dissolved in CH2Cl2 (150 mL) and CH3OH (3 mL) at room temperature and treated with MnO2 ( ̃85%, 40.59 g, 397 mmol). The mixture was stirred for 64 hrs then filtered through celite. The filtrates were concentrated and the residue was purified by flash chromatography (50 g silica, 5:1 hexanes:ethyl acetate) to give 1.43 g (32%) of 3-hydroxypyridine-2-carboxaldehyde as yellow crystals. 1H NMR (CDCl3) d 7.38 (d, 1H, J=8.5 Hz), 7.46 (dd, 1H, J=8.7, 4.4 Hz), 8.37 (dd, 1H, J=3.8, 1.3 Hz), 10.08 (s, 1H), 10.74 (s, 1H).
Using General procedure B: N-(1H-benzimidazol-2-ylmethyl)-N-(5,6,7,8-tetrahydro-8-quinolinyl)-1,4-benzenedimethanamine (0.1244 g, 0.313 mmol) and 3-hydroxypyridine-2-carboxaldehyde (0.0342 g, 0.278 mmol) were reacted with NaBH(OAc)3 (0.0854 g, 0.403 mmol) in CH2Cl2 (2.5 mL). Purification of the crude material by radial chromatography (2 mm TLC plate, 50:1:1 CH2Cl2: CH3OH: NH4OH) provided 0.0811 g (58%) of AMD9399 (free base).
Using General Procedure D: the free base from above was converted to the corresponding hydrobromide salt giving 0.1218 g (87%) of AMD9399 as a white solid. 1H NMR (D2O) 01.80–1.98 (m, 1H), 2.15–2.33 (m, 2H), 2.36–2.50 (m, 1H), 2.99–3.07 (m, 2H), 3.74–3.89 (m, 4H), 3.93–4.05 (m, 2H), 4.63 (d, 1H, J=16.7 Hz), 4.45 (d, 1H, J=16.7 Hz), 7.04 (d, 2H, J=7.7 Hz), 7.22 (d, 2H, J=7.9 Hz), 7.31 (dd, 2H, J=6.1, 3.0 Hz), 7.52 (dd, 2H, J=6.2, 3.1 Hz), 7.65–7.82 (m, 2H), 7.92 (dd, 1H, J=7.9, 6.1 Hz), 8.18 (dd, 1H, J=4.8, 1.3), 8.39 (d, 1H, J=7.9 Hz), 8.76 (d, 1H, J=4.8 Hz). 13C NMR (D2O) 20.46, 20.98, 27.87, 44.33, 50.24, 50.41, 56.71, 63.32, 113.91 (2 carbons), 126.15, 126.52 (2 carbons), 128.60, 129.56, 130.04 (2 carbons), 130.33, 130.44 (2 carbons), 130.92 (2 carbons), 134.19, 136.59, 138.19, 139.71, 141.07, 148.34, 150.77, 151.88, 154.70. ES-MS m/z 505 (M+H) Anal Calc. for C31H32N6O.4.0HBr.2.4H2O: C, 42.72; H, 4.72; N, 9.64; Br, 36.67. Found: C, 42.75; H, 4.74; N, 9.39; Br, 36.74
EXAMPLE: 56




AMD9402: Preparation of N-(3-methyl-2-pyridinylmethyl)-N′-(1H-benzimidazol-2-ylmethyl)-N′-(5,6,7,8-tetrahydro-8-quinolinyl)-1,4-benzenedimethanamine (hydrobromide salt)
Preparation of 2-(hydroxymethyl)-3-methylpyridine
To a stirred solution of 2,3-lutidine (4.8363 g, 45.13 mmol) in glacial acetic acid (30 mL) at room temperature was added 30% H2O2 (4.6 mL) and the resultant solution was heated to 70° C. After 6 hours, the reaction mixture was cooled to room temperature, additional H2O2 (4.6 mL) was added, and the solution was heated at 70° C. overnight. The reaction mixture was allowed to cool to room temperature and then concentrated under reduced pressure. The residue was dissolved in CHCl3 (100 mL) and treated with solid Na2CO3 (14.12 g). After 1 hour, the supernatant was decanted and the residue was washed with warm CHCl3 (3×50 mL). The combined supernatants were filtered and concentrated to provide 4.6951 g as a yellow solid. The solid was dissolved in acetic anhydride (38 mL) and heated at 90° C. overnight. The mixture was cooled to room temperature and concentrated and the crude product was filtered through a silica plug (33 g silica, ethyl acetate) to give 6.13 g of 2-acetoxymethyl-3-methyl-pyridine as an orange oil.
To a stirred solution of the oil from above (6.13 g, 37.1 mmol) in dry CH3OH (75 mL) was added K2CO3 (10.30 g, 74.5 mmol). The mixture was stirred for 20 hrs, then distilled water (50 mL) was added to dissolve the K2CO3. The mixture was extracted with CHCl3 (4×100 mL). The combined organic phases were dried (Na2SO4) and concentrated to give 3.26 g (59%) of 2-(hydroxymethyl)-3-methylpyridine as a brown solid. 1H NMR (CDCl3) □ 2.21 (s, 3H), 4.68 (s, 2H), 7.15 (dd, 1H, J=7.4, 4.7 Hz), 7.46 (d, 1H, J=6.9 Hz), 8.40 (d, 1H, J=4.7 Hz).
Preparation of 3-methylpyridine-2-carboxaldehyde
To a stirred solution of 2-(hydroxymethyl)-3-methylpyridine (1.08 g, 8.77 mmol) in dry CH2Cl2 (45 mL) at room temperature was added MnO2 (8.09 g, 79.1 mmol). The mixture was stirred for 21 hrs then filtered through celite. The filtrate was concentrated to give 0.68 g (64%) of 3-methylpyridine-2-carboxaldehyde. 1H NMR (CDCl3) □ 2.66 (s, 3H), 7.39 (dd, 1H, J=8.3, 4.3 Hz), 7.63 (d, 1H, J=7.9 Hz), 8.66 (d, 1H, J=3.3 Hz), 10.19 (s, 1H). This was used without further purification.
Using general procedure B: N-(1H-benzimidazol-2-ylmethyl)-N-(5,6,7,8-tetrahydro-8-quinolinyl)-1,4-benzenedimethanamine (0.1281 g, 0.322 mmol) and 3-methylpyridine-2-carboxaldehyde (0.0376 g, 0.310 mmol) were reacted with NaBH(OAc)3 (0.0877 g, 0.414 mmol) in CH2Cl2 (2.5 mL). Purification of the crude material by radial chromatography (2 mm TLC plate, 50:1:1 CH2Cl2: CH3OH: NH4OH) followed by a second radial chromatography (1 mm TLC plate, 75:1:1 CH2Cl2: CH3OH: NH4OH) provided 0.0791 g (51%) of AMD9402 (free base).
Using General Procedure D: the free base was converted to the corresponding hydrobromide salt giving 0.1541 g (98%) of AMD9402. 1H NMR (D2O) 1.82–1.98 (m, 1H), 2.16–2.35 (m, 2H), 2.28 (s, 3H), 2.39–2.51 (m, 1H), 3.00–3.08 (m, 2H), 3.77–3.91 (m, 4H), 4.17 (s, 2H), 4.44 (d, 1H, J=16.5 Hz), 4.63 (d, 1H, J=16.2 Hz), 7.07 (d, 2H, J=7.7 Hz), 7.24 (d, 2H, J=7.7 Hz), 7.39 (dd, 2H, J=6.2, 3.1 Hz), 7.55 (dd, 2H, J=6.2, 3.1 Hz), 7.60 (dd, 1H, J=8.0, 5.1 Hz), 7.92 (dd, 1H, J=7.9, 5.9 Hz), 8.39 (d, 1H, J=7.1 Hz), 8.49 (d, 1H, J=3.9 Hz), 8.76 (d, 1H, J=4.9 Hz). 13C NMR (D2O) 17.30, 20.44, 20.93, 27.85, 46.24, 50.15, 50.59, 56.68, 63.19, 113.88 (2 carbons), 126.16 (2 carbons), 126.64 (2 carbons), 130.12, 130.24 (2 carbons), 130.47, 130.90 (2 carbons), 135.86, 138.25, 139.69, 141.03, 144.17, 144.31, 145.91, 148.30, 150.80, 151.76. ES-MS m/z 503 (M+H) Anal Calc. for C32H34N6 4.0HBr 2.8H2O: C, 43.84; H, 5.01; N, 9.59; Br, 36.45. Found: C, 43.81; H, 5.10; N, 9.45; Br, 36.58.
EXAMPLE: 57




AMD9411: Preparation of N-(6-bromo-2-pyridinylmethyl)-N′-(1H-benzimidazol-2-ylmethyl)-N′-(5,6,7,8-tetrahydro-8-quinolinyl)-1,4-benzenedimethanamine (hydrobromide salt)
Preparation of 6-bromopyridine-2-carboxaldehyde
To a stirred solution of 6-bromopicolinic acid (0.4998 g, 2.47 mmol) in dry THF (13 mL) at room temperature was added BH3.THF (1.0M, 10.0 mL, 10.0 mmol). The reaction was stirred for 19 hrs then quenched with the addition of dry CH3OH (9 mL) followed by heating to 70° C. for 20 hrs. The clear solution was concentrated and methanol (20 mL) was added, and the mixture was evaporated once again (repeated three times). The residue was purified by flash chromatography (31 g silica, 49:1 CH2Cl2: CH3OH) to afford 0.2218 g of a yellow oil.
This yellow oil was dissolved in CH2Cl2 (10 mL) and treated with MnO2 (85%, 0.9306 g, 10.7 mmol). The suspension was stirred for 63 hrs at room temperature, then for 3 hrs at 40° C. The suspension was then filtered through celite and concentrated. The orange residue obtained was purified by flash chromatography (7 g silica, 99:1 CH2Cl2: CH3OH) to afford 0.0655 g (19%) 6-bromopyridine-2-carboxaldehyde as an orange crystalline solid. 1H NMR (CDCl3): δ 7.74 (m, 2H), 7.93 (dd, J=3 Hz, 9 Hz, 1H), 10.01 (s, 1H).
Using general procedure B: N-(1H-benzimidazol-2-ylmethyl)-N-(5,6,7,8-tetrahydro-8-quinolinyl)-1,4-benzenedimethanamine (0.0847 g, 0.213 mmol) and 6-bromopyridine-2-carboxaldehyde (0.0379 g, 0.204 mmol) were reacted with NaBH(OAc)3 (0.0637 g, 0.301 mmol) in CH2Cl2 (5 mL). Purification of the crude material by radial chromatography (2 mm TLC plate, 100:1:1 CH2Cl2: CH3OH: NH4OH) provided 0.0666 g (58%) of AMD9411 (free base).
Using General Procedure D: the free base was converted to the corresponding hydrobromide salt giving 0.0835 g (82%) of AMD9411. 1H NMR (D2O) 1.82–1.97 (m, 1H), 2.16–2.33 (m, 2H), 2.39–2.49 (m, 1H), 2.99–3.09 (m, 2H), 3.70–3.88 (m, 4H), 3.96 (s, 2H), 4.44 (d, 1H, J=16.7 Hz), 4.63 (d, 1H, J=16.6 Hz), 7.03 (d, 2H, J=8.1 Hz), 7.22 (d, 2H, J=8.0 Hz), 7.30–7.36 (m, 3H), 7.54 (dd, 2H, J=6.1, 3.0 Hz), 7.62 (d, 1H, J=7.5 Hz), 7.72 (t, 1H, J=7.9 Hz), 7.92 (dd, 1H, J=7.9, 6.1 Hz), 8.39 (d, 1H, J=7.0 Hz), 8.76 (d, 1H, J=4.4 Hz). 13C NMR (D2O) 20.48, 20.93, 27.85, 49.62, 49.97, 50.21, 56.69, 63.27, 113.88 (2 carbons), 123.31, 126.13, 126.62 (2 carbons), 129.10, 130.19 (2 carbons), 130.28, 130.45, 130.81 (2 carbons), 138.06, 139.68, 141.06 (2 carbons), 141.65, 148.31 (2 carbons), 150.74, 151.75, 151.85. ES-MS m/z 569 (M+H). Anal Calc. for C31H31N6Br.3.4HBr.1.5H2O: C, 42.81; H, 4.33; N, 9.66; Br, 40.43. Found: C, 42.93; H, 4.49; N, 9.37; Br, 40.30.
EXAMPLE: 58




AMD9421: Preparation of N-(6-hydroxy-2-pyridinylmethyl)-N′-(1H-benzimidazol-2-ylmethyl)-N′-(5,6,7,8-tetrahydro-8-quinolinyl)-1,4-benzenedimethanamine (hydrobromide salt)
Preparation of 6-hydroxypyridine-2-carboxaldehyde
To a stirred solution of 6-hydroxypicolinic acid (0.5236 g, 3.76 mmol) in dry THF (20 mL) at room temperature was added BH3-THF (1.0 M, 19.0 mL, 19.0 mmol). The mixture was heated to 65° C. with stirring for 17 hrs. The mixture was cooled to room temperature and dry CH3OH (20 mL) was added. The mixture was heated at 65° C. for a further 3.5 hrs then concentrated. Additional CH3OH (10 mL) was added and the mixture was concentrated once again to give 0.5465 g of a yellow solid. This was used without further purification in the next step.
The yellow solid from above (0.4451 g, 3.62 mmol) was dissolved in pyridine (30 ml) and treated with MnO2 ( ̃85%, 3.21 g, 31.4 mmol). The mixture was stirred for 19 hrs then filtered through celite and the filter cake was washed with CHCl3. The filtrates were concentrated to afford a green oil which was purified by flash chromatography (12 g silica, 19:1 CH2Cl2: CH3OH) to give 0.1487 g (34%) of 6-hydroxypyridine-2-carboxaldehyde as a white solid. 1H NMR (CDCl3) □ 6.79 (dd, 1H, J=6.6, 1.3 Hz), 6.90 (dd, 1H, J=9.1, 1.4), 7.56 (dd, 1H, J=9.2, 6.6 Hz), 9.26 (br s, 1H), 9.55 (s, 1H).
Using general procedure B: N-(1H-benzimidazol-2-ylmethyl)-N-(5,6,7,8-tetrahydro-8-quinolinyl)-1,4-benzenedimethanamine (0.1186 g, 0.298 mmol) and 6-hydroxypyridine-2-carboxaldehyde (0.0333 g, 0.270 mmol) were reacted with NaBH(OAc)3 (0.0881 g, 0.415 mmol) in CH2Cl2 (5 mL). Purification of the crude material by radial chromatography (2 mm TLC plate, 50:1:1 CH2Cl2: CH3OH: NH4OH) followed by a second radial chromatography (1 mm TLC plate, 75:1:1 CH2Cl2: CH3OH: NH4OH) provided 0.0522 g (38%) of the AMD9421 (free base).
Using General Procedure D: the free base was converted to the corresponding hydrobromide salt giving 0.0715 g (80%) of AMD9421 as a white solid. 1H NMR (D2O) 1.85–1.99 (m, 1H), 2.16–2.33 (m, 2H), 2.39–2.49 (m, 1H), 3.00–3.09 (m, 2H), 3.75–3.90 (m, 6H), 4.45 (d, 1H, J=16.2 Hz), 4.63 (d, 1H, J=16.7 Hz), 6.52 (d, 1H, J=6.6 Hz), 6.64 (d, 1H, J=9.1 Hz), 7.02 (d, 2H, J=7.9 Hz), 7.23 (d, 2H, J=7.9 Hz), 7.39 (dd, 2H, J=6.4, 3.3 Hz), 7.55 (dd, 2H, J=6.1, 3.1 Hz), 7.67 (dd, 1H, J=9.2, 7.0 Hz), 7.93 (dd, 1H, J=7.9, 6.1 Hz), 8.40 (d, 1H, J=7.9 Hz), 8.76 (d, 1H, J=4.8 Hz). 13C NMR (D2O) 20.43, 20.94, 27.84, 46.89, 50.15, 50.33, 56.68, 63.26, 111.50, 113.92 (2 carbons), 120.61, 126.13, 126.57 (2 carbons), 129.91, 130.18 (2 carbons), 130.46, 130.88 (2 carbons), 137.82, 138.23, 138.68, 141.06, 143.79 (2 carbons), 148.32, 150.77, 151.84, 165.35. ES-MS m/z 505 (M+H) Anal Calc. for C31H32N6O.3.8HBr.2.6H2O: C, 43.35; H, 4.81; N, 9.78; Br, 35.35. Found: C, 43.54; H, 4.73; N, 9.69; Br, 35.05
EXAMPLE: 59




AMD9422: Preparation of N-(3-propoxy-2-pyridinylmethyl)-N′-(1H-benzimidazol-2-ylmethyl)-N′-(5,6,7,8-tetrahydro-8-quinolinyl)-1,4-benzenedimethanamine (hydrobromide salt)
Preparation of 3-n-propoxypyridine-2-carboxaldehyde
To a stirred solution of 3-n-propoxypicolinic acid n-propyl ester (0.1209 g, 0.541 mmol) in dry CH2Cl2 (5 mL) at −78° C. was added DIBAL-H (1.0 M, 2.5 mL, 2.5 mmol). The mixture was stirred at −78° C. for 1 hr, then at room temperature for 3 hrs. The mixture was poured into saturated aqueous sodium potassium tartrate (15 mL), diluted with CH2Cl2 (15 mL) and stirred vigorously for 65 hrs. The phases were separated and the aqueous phase extracted with CH2Cl2 (3×20 mL). The combined organic phases were dried (Na2SO4) and concentrated to give a yellow oil. The yellow oil was dissolved in CH2Cl2 (5 mL) and treated with MnO2 ( ̃85%, 0.4549 g, 4.45 mmol). The mixture was stirred for 19 hrs then filtered through celite. The filtrate was concentrated to give 0.1014 g of 3-n-propoxypyridine-2-carboxaldehyde as an orange oil. 1H NMR (CDCl3) d 1.09 (t, 3H, J=7.4 Hz), 1.91 (sextet, 2H, J=7.1 Hz), 4.07 (t, 2H, J=6.6 Hz), 7.38–7.47 (m, 2H), 8.39 (dd, 2H, J=4.4, 1.4 Hz), 10.43 (s, 1H).
Using general procedure B: N-(1H-benzimidazol-2-ylmethyl)-N-(5,6,7,8-tetrahydro-8-quinolinyl)-1,4-benzenedimethanamine (0.1211 g, 0.305 mmol) and 3-n-propoxypyridine-2-carboxaldehyde (0.0470 g, 0.285 mmol) were reacted with NaBH(OAc)3 (0.0850 g, 0.401 mmol) in CH2Cl2 (5 mL). Purification of the crude material by radial chromatography (2 mm TLC plate, 75:1:1 CH2Cl2: CH3OH: NH4OH) provided 0.0476 g (31%) of AMD9422 (free base) as a white solid.
Using General Procedure D: the free base was converted to the corresponding hydrobromide salt giving 0.0669 g (82%) of AMD9422 as a white powder. 1H NMR (D2O) 0.91 (t, 3H, J=7.5 Hz), 1.74 (sextet, 2H, J=7.1 Hz), 1.84–1.98 (m, 1H), 2.16–2.33 (m, 2H), 2.40–2.51 (m, 1H), 3.00–3.09 (m, 2H), 3.75–3.94 (m, 6H), 4.08 (t, 2H, J=6.6 Hz), 4.46 (d, 1H, J=16.8 Hz), 4.65 (d, 1H, J=17.1 Hz), 7.07 (d, 2H, J=8.4 Hz), 7.22–7.29 (m, 4H), 7.51 (dd, 2H, J=6.1, 3.0 Hz), 7.63 (dd, 1H, J=8.6, 4.9 Hz), 7.72 (d, 1H, J=8.8 Hz), 7.93 (dd, 1H, J=7.0, 7.0 Hz), 8.19 (d, 1H J=5.1 Hz), 8.41 (d, 1H, J=8.0 Hz), 8.77 (d, 1H, J=5.7 Hz). 13C NMR (D2O) 14.96, 25.26, 25.79, 26.93, 32.68, 49.79, 55.02 (2 carbons), 61.65, 68.21, 76.28, 118.63 (2 carbons), 128.93, 130.97, 131.32 (2 carbons), 132.52 (2 carbons), 134.83 (2 carbons), 135.20, 135.72 (2 carbons), 142.40, 143.01, 143.48, 144.51, 145.91, 153.16, 155.56, 156.73, 159.68. ES-MS m/z 547 (M+H) Anal Calc. for C34H38N6O.4.0HBr.3.4H2O: C, 43.84; H, 5.28; N, 9.02; Br, 34.31. Found: C, 43.71; H, 5.19; N, 8.91; Br, 34.52.
EXAMPLE: 60




AMD9425: Preparation of N-(5,6,7,8-tetrahydro-8-quinolinyl)-N′-(1H-benzimidazol-2-ylmethyl)-N′-(5,6,7,8-tetrahydro-8-quinolinyl)-1,4-benzenedimethanamine (hydrobromide salt)
Using general procedure B: N-(1H-benzimidazol-2-ylmethyl)-N-(5,6,7,8-tetrahydro-8-quinolinyl)-1,4-benzenedimethanamine (0.1135 g, 0.286 mmol) and 6,7-dihydro-5H-quinolin-8-one (0.0415 g, 0.282 mmol) were reacted with NaBH(OAc)3 (0.0858 g, 0.404 mmol) in CH2Cl2 (5 mL). Purification of the crude material by radial chromatography (2 mm TLC plate, 75:1:1 CH2Cl2: CH3OH: NH4OH) provided 0.0716 g (48%) of AMD9425 (free base) as a colourless film.
Using General Procedure D: the free base was converted to the corresponding hydrobromide salt giving 0.1090 g (85%) of AMD9425 as a white powder. 1H NMR (D2O) 1.74–2.07 (m, 4H), 2.11–2.32 (m, 3H), 2.38–2.49 (m, 1H), 2.85–2.93 (m, 2H), 3.00–3.08 (m, 2H), 3.76–3.89 (m, 4H), 4.01–4.10 (m, 1H), 4.08 (t, 2H, J=6.6 Hz), 4.45 (dd, 1H, J=16.6, 4.0 Hz), 4.63 (d, 1H, J=16.6 Hz), 7.09 (d, 2H, J=8.1 Hz), 7.24 (d, 2H, J=7.8 Hz), 7.27–7.34 (m, 2H), 7.48–7.56 (m, 3H), 7.86–7.94 (m, 2H), 8.39 (d, 1H, J=8.0 Hz), 8.49 (br s, 1H), 8.76 (d, 1H, J=5.8 Hz). 13C NMR (D2O) 18.30, 20.43, 20.94, 24.28, 27.17, 27.84, 47.68, 50.21, 55.33, 56.68, 63.29, 113.78 (2 carbons), 125.65, 126.11, 126.55 (2 carbons), 130.04 (2 carbons), 130.41, 130.90 (2 carbons), 136.55, 136.58, 138.05, 139.67, 141.03, 141.99, 145.80, 145.87, 148.29, 150.78, 151.85. ES-MS m/z 529 (M+H) Anal Calc. for C34H36N6.4.5HBr.2.7H2O: C, 43.38; H, 4.91; N, 8.93; Br, 38.19. Found: C, 43.39; H, 5.06; N, 8.89; Br, 38.13.
EXAMPLE: 61




AMD9437: Preparation of N-(4,6-dimethyl-2-pyridinylmethyl)-N′-(1H-benzimidazol-2-ylmethyl)-N′-(5,6,7,8-tetrahydro-8-quinolinyl)-1,4-benzenedimethanamine (hydrobromide salt)
Preparation of 2-acetoxymethyl-4,6-dimethylpyridine and 4-acetoxymethyl-2,6-dimethylpyridine
To a stirred solution of 2,4,6-collidine (3.22 g, 26.6 mmol) in glacial acetic acid (21 mL) at room temperature was added 30% H2O2 (3.0 mL) and the resultant solution was heated to 70° C. After 6 hours, the reaction mixture was cooled to room temperature, additional H2O2 (3.0 mL) was added, and the solution was heated at 70° C. overnight. The reaction mixture was cooled to room temperature and concentrated under reduced pressure. The residue was dissolved in CHCl3 (50 mL) and treated with solid Na2CO3 (9.9 g). After 1 hour, the supernatant was decanted and the residue was washed with warm CHCl3 (3×75 mL). The combined supernatants were filtered and concentrated to provide 2.43 g as a yellow oil. The oil was dissolved in acetic anhydride (22.5 mL) and heated at 90° C. overnight. The mixture was cooled to room temperature and concentrated. The crude product was purified by flash chromatography (40 g silica gel, 2:1 hexanes/ethyl acetate) to give 1.05 g (24%) of 2-acetoxymethyl-4,6-dimethylpyridine: 1H NMR (CDCl3) □ 2.31 (s, 3H), 2.35 (s, 3H), 2.51 (s, 3H), 5.14 (s, 2H), 6.92 (s, 1H), 6.97 (s, 1H); and 0.35 g (8%) of 4-acetoxymethyl-2,5-dimethylpyridine: 1H NMR (CDCl3) □ 2.15 (s, 3H), 2.53 (s, 6H), 5.04 (s, 2H), 6.92 (s, 2H).
Preparation of 4,6-dimethylpyridine-2-carboxaldehyde
To a stirred solution of 2-acetoxymethyl-4,6-dimethylpyridine (1.05 g, 6.28 mmol) in dry CH3OH (50 mL) at room temperature was added K2CO3 (1.89 g, 13.7 mmol). The mixture was stirred for 19 hrs then poured into distilled water (25 mL) and the solution was extracted with CHCl3 (4×30 mL). The combined organic phase were dried (Na2SO4) and concentrated to 0.45 g yellow solid. The solid was dissolved in CH2Cl2 (20 mL) and treated with MnO2 ( ̃85%, 2.94 g, 28.7 mmol). After stirring for 21 hrs the mixture was filtered through celite. The filtrate was concentrated to afford 0.28 g of a yellow oil, which was a mixture of the desired aldehyde (74%) and the intermediate alcohol (26%). The overall yield was 24%. 4,6-dimethylpyridine-2-carboxaldehyde: 1H NMR (CDCl3) □ 2.39 (s, 3H), 2.61 (s, 3H), 7.20 (s, 1H), 7.60 (s, 1H), 10.02 (s, 1H).
Preparation of 2,6-dimethylpyridine-4-carboxaldehyde
To a stirred solution of 4-acetoxymethyl-2,5-dimethylpyridine (0.35 g, 2.09 mmol) in dry CH3OH (25 mL) at room temperature was added K2CO3 (0.77 g, 5.57 mmol). The mixture was stirred for 19 hrs then poured into distilled water (20 mL). The mixture was extracted with CHCl3 (4×30 mL) and the combined organic phase were dried (Na2SO4) and concentrated to give 0.24 g white solid. This solid was dissolved in CH2Cl2 (20 mL) and treated with MnO2 ( ̃85%, 1.56 g, 15.3 mmol). After stirring for 21 hrs the mixture was filtered through celite. The filtrate was concentrated to afford 0.150 g (53%) of 2,6-dimethylpyridine-4-carboxaldehyde as yellow oil. 1H NMR (CDCl3) □ 2.63 (s, 6H), 7.36 (s, 2H), 10.01 (s, 1H).
Using general procedure B: N-(1H-benzimidazol-2-ylmethyl)-N-(5,6,7,8-tetrahydro-8-quinolinyl)-1,4-benzenedimethanamine (0.1200 g, 0.302 mmol) and 4,6-dimethylpyridine-2-carboxaldehyde (0.0510 g, 0.282 mmol) were reacted with NaBH(OAc)3 (0.0827 g, 0.390 mmol) in CH2Cl2 (5 mL). Purification of the crude material by radial chromatography (2 mm TLC plate, 75:1:1 CH2Cl2: CH3OH: NH4OH) provided 0.0689 g (47%) of AMD9437 (free base) as a white foam.
Using General Procedure D: the free base was converted to the corresponding hydrobromide salt giving 0.1067 g (88%) of AMD9437 as a white powder. 1H NMR (D2O) 1.83–1.99 (m, 1H), 2.18–2.35 (m, 2H), 2.40–2.60 (m, 4H), 2.67 (s, 3H), 3.01–3.11 (m, 2H), 3.79–3.93 (m, 4H), 4.30 (s, 2H), 4.46 (d, 1H, J=16.6 Hz), 4.65 (d, 1H, J=16.6 Hz), 7.07 (d, 2H, J=7.5 Hz), 7.26 (d, 2H, J=7.8 Hz), 7.45 (dd, 2H, J=6.4, 3.3 Hz), 7.55–7.68 (m, 4H), 7.95 (t, 1H, J=7.5 Hz), 8.32 (d, 1H, J=8.0 Hz), 8.78 (d, 1H, J=5.6 Hz). 13C NMR (D2O) 20.87, 21.76, 22.24, 23.16, 29.16, 48.07, 51.41, 52.15, 57.99, 64.48, 115.27 (2 carbons), 127.45, 127.66, 127.94 (2 carbons), 130.40, 131.06, 131.61 (2 carbons), 131.83, 132.23 (2 carbons), 139.72, 141.01, 142.36, 144.65, 149.63 (2 carbons), 152.09, 153.04, 156.68, 162.58. ES-MS m/z 517 (M+H) Anal Calc. for C33H36N6.4.0HBr.3.6H2O: C, 43.49; H, 5.26; N, 9.28; Br, 35.31. Found: C, 43.88; H, 5.01; N, 9.21; Br, 35.24.
EXAMPLE: 62




AMD9438: Preparation of N-(2,6-dimethyl-4-pyridinylmethyl)-N′-(1H-benzimidazol-2-ylmethyl)-N′-(5,6,7,8-tetrahydro-8-quinolinyl)-1,4-benzenedimethanamine (hydrobromide salt)
Using general procedure B: N-(1H-benzimidazol-2-ylmethyl)-N-(5,6,7,8-tetrahydro-8-quinolinyl)-1,4-benzenedimethanamine (0.1276 g, 0.321 mmol) and 2,6-dimethylpyridine-4-carboxaldehyde (0.0420 g, 0.311 mmol) were reacted with NaBH(OAc)3 (0.0919 g, 0.434 mmol) in CH2Cl2 (5 mL). Purification of the crude material by radial chromatography (2 mm TLC plate, 75:1:1 CH2Cl2: CH3OH: NH4OH) followed by a second radial chromatography (1 mm TLC plate, 100:1:1 CH2Cl2: CH3OH: NH4OH) provided 0.0493 g (31%) of AMD9438 (free base) as a white solid.
Using General Procedure D: the free base was converted to the corresponding hydrobromide salt giving 0.0767 g (88%) of AMD9438 as a white powder. 1H NMR (D2O) 11.83–2.00 (m, 1H), 2.18–2.36 (m, 2H), 2.42–2.52 (m, 1H), 2.71 (s, 6H), 3.02–3.10 (m, 2H), 3.80–3.94 (m, 4H), 4.16 (s, 2H), 4.47 (d, 1H, J=16.7 Hz), 4.66 (d, 1H, J=16.4 Hz), 7.09 (d, 2H, J=8.0 Hz), 7.27 (d, 2H, J=8.0 Hz), 7.45 (dd, 2H, J=6.1, 3.0 Hz), 7.54–7.62 (m, 4H), 7.95 (dd, 1H, J=7.7, 6.1 Hz), 8.42 (d, 1H, J=7.8 Hz), 8.78 (d, 1H, J=5.4 Hz). 13C NMR (D2O) 19.24 (2 carbons), 20.44, 20.93, 27.85, 48.62, 50.13, 50.77, 56.68, 63.18, 113.95 (2 carbons),125.10 (2 carbons), 126.12, 126.62 (2 carbons), 129.78, 130.40 (2 carbons), 130.52 (2 carbons), 130.89, 138.36, 139.69, 141.04, 148.29 (2 carbons), 150.46, 150.79, 151.77, 154.54. ES-MS m/z 517 (M+H) Anal Calc. for C33H36N6.4.0HBr.4.1H2O: C, 43.36; H, 5.31; N, 9.19; Br, 34.96. Found: C, 43.50; H, 5.30; N, 8.99; Br, 34.74.
EXAMPLE: 63




AMD9439: Preparation of N-(3-isoquinolinylmethyl)-N′-(1H-benzimidazol-2-ylmethyl)-N′-(5,6,7,8-tetrahydro-8-quinolinyl)-1,4-benzenedimethanamine (hydrobromide salt)
Preparation of isoquinoline-3-carboxaldehyde
To a stirred solution of isoquinoline-3-carboxylic acid (0.3179 g, 1.84 mmol) in dry THF (10 mL) at room temperature was added BH3-THF (1.0 M, 7.5 mL, 7.5 mmol). The mixture was stirred for 17 hrs, dry CH3OH (10 mL) was added, and the reaction was heated to 0.75° C. with stirring for a further 24 hrs. The mixture was concentrated and the residue was treated with dry CH3OH (3×10 mL), removing the solvent by evaporation each time. The crude product was purified by column chromatography (12 g silica gel, 19:1 CH2Cl2: CH3OH) to give 0.0359 g of 3-(hydroxymethyl)isoquinoline as a white film. The solid was dissolved in dry CH2Cl2 (5 mL) and treated with MnO2 ( ̃85%, 0.2978 g, 2.91 mmol) with stirring for 19 hrs then filtered through celite. Concentration of the filtrate afforded 0.0252 g (9%) of isoquinoline-3-carboxaldehyde as yellow oil. 1H NMR (CDCl3) d 7.73–7.82 (m, 2H), 7.97–8.07 (m, 2H), 8.37 (s, 1H), 9.36 (s, 1H), 10.25 (s, 1H).
Using general procedure B: N-(1H-benzimidazol-2-ylmethyl)-N-(5,6,7,8-tetrahydro-8-quinolinyl)-1,4-benzenedimethanamine (0.0666 g, 0.168 mmol) and isoquinoline-3-carboxaldehyde (0.0252 g, 0.159 mmol) were reacted with NaBH(OAc)3 (0.0481 g, 0.227 mmol) in CH2Cl2 (5 mL). Purification of the crude material by radial chromatography (2 mm TLC plate, 100:1:1 CH2Cl2: CH3OH: NH4OH) provided 0.0455 g (53%) of AMD9439 (free base) as a white solid.
Using General Procedure D, the free base was converted to the corresponding hydrobromide salt giving 0.0720 g (92%) of AMD9439 as a white powder. 1H NMR (D2O) 1.80–1.96 (m, 1H), 2.14–2.31 (m, 2H), 2.37–2.47 (m, 1H), 3.65 (d, 1H, J=12.8 Hz), 3.78 (d, 1H, J=12.7 Hz), 3.84 (s, 2H), 4.28 (s, 2H), 4.41 (d, 1H, J=16.2 Hz), 4.60 (d, 1H, J=16.6 Hz), 4.70–4.75 (m, 1H), 7.02 (d, 2H, J=8.4 Hz), 7.15 (d, 2H, J=7.9 Hz), 7.29 (dd, 2H, J=6.3, 3.2 Hz), 7.52 (dd, 2H, J=6.2, 3.1 Hz), 7.85, (t, 1H, J=7.5 Hz), 7.93 (dd, 1H, J=8.2, 5.9 Hz), 7.98–8.08 (m, 3H), 8.27 (d, 1H, J=8.4 Hz), 8.40 (d, 1H, J=6.7 Hz), 8.75 (d, 1H, J=4.3 Hz), 9.43 (s, 1H). 13C NMR (D2O) 20.41, 20.91, 27.84, 48.89, 50.13, 50.32, 56.53, 63.09, 113.88 (2 carbons), 125.22, 126.15, 126.57 (2 carbons), 127.65, 127.87, 129.71 (2 carbons), 130.11, 130.44 (2 carbons), 130.75, 130.89, 135.37, 137.54, 138.07, 138.34, 139.68, 141.05, 148.32 (2 carbons), 150.77, 151.35 (2 carbons), 151.74. ES-MS m/z 539 (M+H) Anal Calc. for C35H34N6.4.0HBr.3.6H2O: C, 45.34; H, 4.91; N, 9.06; Br, 34.47. Found: C, 45.39; H, 4.99; N, 8.96; Br, 34.35.
EXAMPLE: 64




AMD9440: Preparation of N-(4-methoxy-2-quinolinylmethyl)-N′-(1H-benzimidazol-2-ylmethyl)-N′-(5,6,7,8-tetrahydro-8-quinolinyl)-1,4-benzenedimethanamine (hydrobromide salt)
Preparation of 4-methoxyquinoline-2-carboxaldehyde
To a stirred solution of 4-methoxyquinoline-2-carboxylic acid (0.3069 g, 1.78 mmol) in dry THF (9 mL) at 0° C. was added BH3-THF. The mixture was allowed to warm to room temperature and stirred for 6.5 hrs. Dry CH3OH (10 mL) was added and the mixture heated to 70° C. for 17 hrs and then concentrated. The resulting crude residue was dissolved in methanol (20 mL) and concentrated (repeat 3 times) and the residual oil was purified by flash chromatography (20 g silica, 39:1 CH2Cl2: CH3OH) to afford 0.23 g of an orange oil.
The oil from above was dissolved in dry CH2Cl2 (7 mL) and treated with MnO2 ( ̃85%, 1.0956 g, 12.6 mmol) at room temperature. The suspension was stirred for 63 hrs then filtered through celite. The filtrate was concentrated to give 0.17 g (51%) 4-methyoxyquinoline-2-carboxaldehyde as a yellow solid. 1H NMR (CDCl3): δ 4.13 (s, 3H), 7.39 (s, 1H), 7.64 (dd, J=6 Hz, 9 Hz, 1H), 7.80 (dd, J=6 Hz, 9 Hz, 1H), 8.18 (d, J=6 Hz, 1H), 8.26 (d, J=6 Hz, 1H), 10.16 (s, 1H).
Using general procedure B: N-(1H-benzimidazol-2-ylmethyl)-N-(5,6,7,8-tetrahydro-8-quinolinyl)-1,4-benzenedimethanamine (0.1133 g, 0.285 mmol) and 4-methoxyquinoline-2-carboxaldehyde (0.0490 g, 0.262 mmol) were reacted with NaBH(OAc)3 (0.0831 g, 0.392 mmol) in CH2Cl2 (5 mL). Purification of the crude material by radial chromatography (2 mm TLC plate, 100:1:1 CH2Cl2: CH3OH: NH4OH) provided 0.0520 g (35%) of AMD9440 (free base) as a white foam.
Using General Procedure D: the free base was converted to the corresponding hydrobromide salt giving 0.0762 g (86%) of AMD9440 as a white powder. 1H NMR (D2O) 1.80–1.94 (m, 1H), 2.12–2.27 (m, 2H), 2.99–3.07 (m, 1H), 3.48 (d, 1H, J=12.7 Hz), 3.68 (d, 1H, J=12.7 Hz), 3.94 (s, 2H), 4.20 (s, 3H), 4.35 (d, 1H, J=16.7 Hz), 4.50 (s, 2H), 4.56 (d, 1H, J=15.3 Hz), 4.64–4.72 (m, 1H), 7.02 (q, 4H, J=7.5 Hz), 7.28 (s, 1H), 7.40 (dd, 2H, J=6.1, 3.1 Hz), 7.55 (dd, 2H, J=6.6, 3.1 Hz), 7.65, (t, 1H, J=7.5 Hz), 7.88–7.98 (m, 3H), 8.22 (d, 1H, J=8.3 Hz), 8.40 (d, 1H, J=7.0 Hz), 8.72 (d, 1H, J=4.4 Hz). 13C NMR (D2O) 20.39, 20.83, 27.84, 48.10, 49.94, 51.08, 56.23, 58.70, 62.70, 102.55, 113.96 (2 carbons), 120.53, 121.18, 123.39, 126.19, 126.70 (2 carbons), 129.44, 129.71, 130.42 (2 carbons), 130.52 (2 carbons), 135.37, 138.29, 139.69, 140.20, 141.06, 148.34 (2 carbons), 149.99, 150.74, 151.52, 169.78. ES-MS m/z 569 (M+H) Anal Calc. for C36H36N6O.4.0HBr.4.1H2O: C, 44.75; H, 5.03; N, 8.70; Br, 33.08. Found: C, 44.99; H, 5.04; N, 8.52; Br, 32.82.
EXAMPLE: 65




AMD9455: Preparation of N-(3-methoxy-2-pyridinylmethyl)-N′-(1H-benzimidazol-2-ylmethyl)-N′-(5,6,7,8-tetrahydro-8-quinolinyl)-1,4-benzenedimethanamine (hydrobromide salt)
Preparation of 3-methoxypyridine-2-carboxaldehyde
To a stirred solution of 3-hydroxypicolinic acid (0.7122 g, 5.1 mmol) in CH3OH (32 mL) at room temperature was added concentrated H2SO4 (4 mL). The mixture was heated to reflux for 18 hrs then concentrated. The residue was diluted with saturated aqueous Na2CO3 (45 mL) and extracted with CH2Cl2 (4×30 mL). The combined organic phases were dried (Na2SO4) and concentrated to give 0.73 g 3-hydroxypicolinic acid methyl ester as a white powder.
The powder (0.55 g, 3.6 mmol) was dissolved in dry N,N-dimethylformamide (25 mL) and treated with K2CO3 (0.6218 g, 4.4 mmol) followed by CH3I (0.63 mL, 10.1 mmol) and the mixture was stirred for 2 hrs then concentrated to afford a bright yellow solid. The solid was dissolved in CH2Cl2 (25 mL) and washed with brine (25 mL). The aqueous phase was extracted with CH2Cl2 (4×20 mL). The combined organic phases were dried (Na2SO4) and concentrated to give a crude brown syrup which was purified by flash chromatography (20 g silica, 39:1 CH2Cl2: CH3OH) to afford 0.4547 g 3-methoxypicolinic acid methyl ester as yellow oil.
To a stirred solution of the oil from above (0.40 g, 2.4 mmol) in dry THF (5 mL) at 0° C. was added BH3.THF (1.0M, 9.6 mL, 9.6 mmol). The mixture was stirred at room temperature for 17 hr, at which point a further 4 equivalents of BH3.THF were added. The resulting mixture was stirred for a further 4 hrs then quenched with dry CH3OH (25 mL). The mixture was concentrated, diluted with CH3OH (25 mL) and refluxed for 17 hrs and concentrated once again. The residue was dissolved in methanol (15 mL) and concentrated (repeat 3 times) to give a yellow oil. The oil was purified by flash chromatography (24 g silica, 49:1 CH2Cl2: CH3OH) to afford 0.0843 g of a mixture of 3-methoxypicolinic acid methyl ester (17%) and 2-(hydroxymethyl)-3-methoxypyridine (83% as shown by NMR).
This mixture was dissolved in CH2Cl2 (6 mL) and treated with MnO2 (0.4743 g, 5.5 mmol). The suspension was stirred at room temperature for 63 hrs then filtered through celite. The filtrate was concentrated to afford 0.0800 g of a colourless oil (50% 3-methoxypyridine-2-carboxaldehyde and 50% 3-methoxypicolinic acid methyl ester). Purification of the mixture by column chromatography on silica gel gave the desired 3-methoxypyridine-2-carboxaldehyde (10% overall yield for 4 steps): 1H NMR (CDCl3): δ 3.98 (s, 3H), 7.39 (m, 2H), 8.40 (d, 1H, J=3.6 Hz), 10.30 (s, 1H).
Using general procedure B: N-(1H-benzimidazol-2-ylmethyl)-N-(5,6,7,8-tetrahydro-8-quinolinyl)-1,4-benzenedimethanamine (0.131 g, 0.330 mmol) and 3-methoxypyridine-2-carboxaldehyde (0.0400 g, 0.292 mmol) were reacted with NaBH(OAc)3 (0.0850 g, 0.401 mmol) in CH2Cl2 (10 mL). Purification of the crude material by radial chromatography (2 mm TLC plate, 75:1:1 CH2Cl2: CH3OH: NH4OH) provided 0.0728 g (48%) of AMD9455 (free base) as a white foam.
Using General Procedure D: the free base was converted to the corresponding hydrobromide salt giving 0.1102 g (88%) of AMD9455 as a white powder. 1H NMR (D2O) 1.85–1.99 (m, 1H), 2.18–2.35 (m, 2H), 2.41–2.52 (m, 1H), 3.02–3.09 (m, 2H), 3.78–3.98 (m, 9H), 4.47 (d, 1H, J=16.6 Hz), 4.66 (d, 1H, J=16.7 Hz), 7.06 (d, 2H, J=7.9 Hz), 7.23–7.31 (m, 4H), 7.53 (dd, 2H, J=6.1, 3.1 Hz), 7.69 (dd, 1H, J=8.8, 5.2 Hz), 7.77, d 1H, J=8.2 Hz), 7.94 (dd, 1H, J=7.8, 5.9 Hz), 8.21 (d, 1H, J=5.0 Hz), 8.41 (d, 1H, J=7.9 Hz), 8.78 (d, 1H, J=5.3 Hz). 13C NMR (D2O) 20.46, 20.99, 27.87, 45.09, 50.22 (2 carbons), 56.68 (2 carbons), 63.36, 113.84 (2 carbons), 123.81, 126.15, 126.51 (2 carbons), 127.98, 130.00 (2 carbons), 130.41, 130.88 (2 carbons), 137.28, 138.14, 138.41, 139.71 (2 carbons), 141.08, 148.35 (2 carbons), 150.75, 151.91, 155.54. ES-MS m/z 519 (M+H) Anal Calc. for C32H34N6O.4.0HBr.2.6H2O: C, 43.23; H, 4.90; N, 9.45; Br, 35.95. Found: C, 43.40; H, 4.81; N, 9.35; Br, 35.76.
EXAMPLE: 66




AMD9481: Preparation of N-[1-(2-pyridinyl)eth-1-yl]-N′-(1H-benzimidazol-2-ylmethyl)-N′-(5,6,7,8-tetrahydro-8-quinolinyl)-1,4-benzenedimethanamine (hydrobromide salt)
Using general procedure B: 2-acetylpyridine (46 mg, 0.4 mmol) and N-(1H-benzimidazol-2-ylmethyl)-N-(5,6,7,8-tetrahydro-8-quinolinyl)-1,4-benzenedimethanamine (150 mg, 0.4 mmol) were reacted with sodium triacetoxyborohydride (120 mg, 0.57 mmol) at room temperature in dichloromethane (5 mL) for 16 hours to yield, after work-up and chromatography, the desired N-[1-(2-pyridinyl)eth-1-yl]-N′-(N-benzimidazol-2-ylmethyl)-N′-(5,6,7,8-tetrahydro-8-quinolinyl)-1,4-benzenedimethanamine as a flakey white solid (18 mg, 9.5%). 1H NMR (CDCl3) δ 1.35 (m, 3H), 1.69 (m, 1H), 2.05 (m, 2H), 2.24 (m, 2H), 2.73 (m, 1H), 2.84 (m, 1H), 3.52 (d, 2H, J=15 Hz), 3.70 (s, 1H), 3.85 (q, 1H, J=5 Hz), 3.95 (d, 1H, J=18 Hz), 4.06 (m, 1H), 4.15 (d, 1H, J=15 Hz), 7.12–7.21 (m, 6H), 7.31 (d, 1H, J=7 Hz), 7.34 (d, 3H, J=9 Hz), 7.41 (d, 1H, J=9 Hz), 7.53 (br, 1H), 7.59 (m, 2H), 8.53 (d, 1H, J=4 Hz), 8.67 (d, 1H, J=5 Hz).
Using general procedure D: the solid from above was converted to the corresponding hydrobromide salt to give AMD9481 (0.02 g) as a white solid. 1H NMR (D2O) 1.56 (m, 3H), 1.90 (m, 1H), 2.23 (m, 2H), 2.43 (m, 1H), 3.04 (br d, 2H), 3.43 (m, 1H), 3.62 (m, 1H), 3.83 (d, 2H, J=8.4 Hz), 4.31 (m, 1H), 4.42 (dd, 1H, J=5.7, 16.5 Hz), 4.62 (d, 1H, J=16.2 Hz), 4.79 (m, 1H), 6.95 (d, 2H, J=7.8 Hz), 7.18 (dd, 2H, J=2.7, 8.1 Hz), 7.37 (d, 1H, J=3 Hz), 7.40 (d, 1H, J=3.6 Hz), 7.47 (m, 1H), 7.50–7.60 (m, 3H), 7.94 (t, 1H, J=6.9 Hz), 8.01 (br t, 1H, J=7.8 Hz), 8.41 (d, 1H, J=7.8 Hz), 8.64 (d, 1H, J=7.8 Hz), 8.77 (d, 1H, J=7.8 Hz); 13C NMR (D2O) □ 18.31, 20.43, 20.92, 27.83, 48.58, 50.18, 56.65, 57.65, 63.22, 113.84 (3 carbons), 123.87, 125.45, 126.12, 126.59 (3 carbons), 129.88 (3 carbons), 130.47, 130.78, 137.94, 139.67, 140.28, 141.03, 148.29, 149.18, 150.80, 151.78, 153.86. ES-MS m/z 503 (M+H). Anal. Calcd. for C32H34N6.4.0HBr.3.5H2O: C, 43.22; H, 5.10; N, 9.45; Br, 35.94. Found: C, 43.36; H, 4.98; N, 9.07; Br, 35.88.
EXAMPLE: 67




AMD9388: Preparation of N-(2-pyridinylmethyl)-N′-[2-[(1H-benzimidazol-2-ylmethyl)amino]ethyl]-N′-(5,6,7,8-tetrahydro-8-quinolinyl)-1,4-benzenedimethanamine (hydrobromide salt)
Using General Procedure B: To a stirred solution of N-(2-nitrobenzenesulfonyl)-N-(2-pyridinylmethyl)-N′-(5,6,7,8-tetrahydro-8-quinolinyl)-1,4-benzenedimethanamine (1.55 g, 2.83 mmol) and N-(t-butyloxycarbonyl)-aminoacetaldehyde (0.500 g, 3.14 mmol) in CH2Cl2 (15 mL) was added NaBH(OAc)3 (0.908 g, 4.28 mmol) and the mixture was stirred at room temperature for 16 hours. Aqueous work-up gave a yellow foam (2.05 g) which was used without further purification in the next step.
The foam from above (2.05 g) was dissolved in CH2Cl2 (4 mL) and treated with trifluoroacetic acid (2 mL) and the mixture stirred for 2 days. Work-up gave the amine as a dark foam (1.65 g). To a solution of the crude amine (0.830 g) and triethylamine (0.34 mL, 2.5 mmol) in CH2Cl2 (7.5 mL) at 0□ C. was added a solution of 2-nitrobenzenesulfonyl chloride (0.380 g, 1.7 mmol) in CH2Cl2 (7.5 mL) and the mixture stirred for 1.5 hours. The reaction was diluted with CH2Cl2 (10 mL) and brine (15 mL) and the phases separated. The aqueous phase was washed with CH2Cl2 (2×10 mL) and the combined organic extracts dried (Na2SO4), filtered and concentrated under reduced pressure. Purification of the resultant brown foam by column chromatography on silica gel (CH2Cl2/MeOH, 96:4) afforded the desired nosyl-protected amine (0.890 mg, 81% over 3 steps) as a yellow foam.
To a solution of the foam from above (0.890 mg, 1.15 mmol) and 1-(tert-butoxycarbonyl)-2-(chloromethyl)benzimidazole (0.462 g, 1.73 mmol) in CH3CN (7 mL) was added powdered K2CO3 (0.409 g, 2.96 mmol) and the mixture was stirred at room temperature overnight then at 50□ C. for 23 hours. The mixture was concentrated under reduced pressure and diluted with CH2Cl2 (25 mL) and water (25 mL). The phases were separated and the aqueous phase was washed with CH2Cl2 (2×10 mL). The combined organic extracts were dried (Na2SO4), filtered and concentrated under reduced pressure. The resulting orange foam (1.36 g) was used without further purification in the next step.
The foam from above (0.588 g) was dissolved in CH2Cl2 (4 mL) and treated with trifluoroacetic acid (2 mL) and the mixture stirred for 2 hours. The resulting intermediate (0.521 g) was then subjected to Nosyl deprotection using General Procedure C:
A solution of the foam from above (0.521 g) was reacted with thiophenol (0.6 mL, 5.84 mmol) and K2CO3 (1.11 g, 8.04 mmol) and the mixture stirred at room temperature for 2.5 hours. Purification of the resultant orange oil by column chromatography on silica gel (20:1:1 CH2Cl2/MeOH/NH4OH) gave the desired free base (219 mg, 35% over 3 steps) as a yellow foam.
Using General Procedure D: The free base (0.219 g, 0.306 mmol) was converted to the corresponding hydrobromide salt giving AMD9388 (0.336 g) as a pale yellow solid. 1H NMR (D2O) 1.70–1.78 (m, 1H), 2.04–2.14 (m, 2H), 2.30–2.35 (m, 1H), 2.89–2.92 (m, 2H), 3.09–3.13 (m, 1H), 3.22–3.38 (m, 3H), 3.83 (s, 2H), 3.99 (d, 1H, J=13.2 Hz, 412 (d, 1H, J=13.2 Hz), 4.36 (S, 2H), 4.36–4.43 (m, 1H), 4.56 (d, 1H, J=15.3 Hz), 4.64 (d, 1H, J=15.3 Hz), 7.29 (d, 2H, J=8.1 Hz), 7.41 (d, 2H, J=8.1 Hz, 7.52–7.56 (m, 2H), 7.61–7.75 (m, 5H), 8.10 (td, 1H, J=7.8, 1.5 Hz), 8.14 (d, 1H, J=8.1 Hz), 8.47 (d, 1H, J=4.5 Hz), 8.62 (d, 1H, J=5.1 Hz); 13C NMR (D2O) □ 19.95, 20.48, 27.68, 41.90, 46.81, 48.33, 48.85, 51.30, 54.70, 59.83, 115.01 (2 carbons), 125.57, 127.23, 127.36, 127.51 (2 carbons), 130.06, 130.87 (4 carbons), 132.11 (2 carbons), 139.09, 139.60, 140.17, 142.34, 145.02, 145.75, 146.84, 147.24, 151.53. ES-MS m/z 532 (M+H). Anal. Calcd. for C33H37N7.5.1HBr.3.3H2O: C, 39.49; H, 4.89; N, 9.77; Br, 40.60. Found: C, 39.44; H, 4.68; N, 9.46; Br, 40.75.
EXAMPLE: 68




AMD9495: Preparation of N-(2-hydroxyphenylmethyl)-N′-(1H-benzimidazol-2-ylmethyl)-N′-(5,6,7,8-tetrahydro-8-quinolinyl)-1,4-benzenedimethanamine (hydrobromide salt)
Using General Procedure B: To a stirred solution of N′-(1H-benzimidazol-2-ylmethyl)-N′-(5,6,7,8-tetrahydro-8-quinolinyl)-1,4-benzenedimethanamine (147 mg, 0.37 mmol) and salicylaldehyde (0.04 mL, 0.38 mmol) in CH2Cl2 (5 mL) was added NaBH(OAc)3 (100 mg, 0.47 mmol) and the resultant mixture was stirred at room temperature for 16 hours. Purification of the crude material by radial chromatography on silica gel gel (2 mm plate, 75:1:1 CH2Cl2/MeOH/NH4OH) afforded the free amine (100 mg, 54%) as a white foam.
Using General Procedure D: Conversion of the foam from above (51 mg, 0.063 mmol) to the hydrobromide salt followed by re-precipitation of the intermediate solid from methanol/ether gave AMD9495 (75 mg, 95%) as a white solid. 1H NMR (D2O) 1.80–1.97 (m, 1H), 2.19–2.33 (m, 2H), 2.41–2.44 (m, 1H), 3.01–3.04 (m, 2H), 3.59 (d, 1H, J=13.2 Hz), 3.65 (d, 1H, J=13.22 Hz), 3.70 (s, 2H), 3.78 (d, 1H, J=12.9 Hz), 3.86 (d, 1H, J=12.9 Hz), 4.46 (d, 1H, J=16.5 Hz), 4.65 (d, 1H, J=16.5 Hz), 4.69–4.79 (m, 1H, overlap with HOD), 6.95 (d, 2H, J=7.5 Hz), 7.02 (d, 2H, J=7.5 Hz), 7.14 (d, 1H, J=6.9 Hz), 7.21–7.25 (m, 4H), 7.35 (t, 1H, J=7.5 Hz), 7.46–7.50 (m, 2H), 7.93 (t, 1H, J=6.6 Hz), 8.40 (d, 1H, J=7.8 Hz), 8.77 (d, 1H, J=5.7 Hz); 13C NMR (D2O) □ 20.45, 21.00, 27.87, 46.32, 49.30, 50.33, 56.73, 63.42, 113.78 (2 carbons), 115.84, 117.50, 120.93, 126.14, 126.58 (2 carbons), 129.81 (2 carbons), 130.34, 130.56, 130.85 (2 carbons), 131.97, 132.17, 137.79, 139.70 (2 carbons), 141.05, 148.32, 150.77, 151.89, 155.37. ES-MS m/z 504 (M+H). Anal. Calcd. for C32H33N5O.3.0HBr.1.9H2O: C, 49.24; H, 5.14; N, 8.97; Br, 30.71. Found: C, 49.28; H, 5.23; N, 8.80; Br, 30.71.
EXAMPLE: 69




AMD9507: Preparation of N-(3-ethoxy-2-pyridinylmethyl)-N′-(1H-benzimidazol-2-ylmethyl)-N′-(5,6,7,8-tetrahydro-8-quinolinyl)-1,4-benzenedimethanamine (hydrobromide salt)
Preparation of 3-fluoropyridine 1-oxide
To a solution of 3-fluoropyridine (2.2 mL, 25.6 mmol) in glacial acetic acid (18 mL) was added a 30 wt. % hydrogen peroxide solution in water (2.7 mL, 24 mmol) and the reaction mixture stirred at 70° C. for 3 hours. An additional portion of hydrogen peroxide (2.7 mL, 24 mmol) was then added and the reaction was stirred at 70° C. for an additional 17 hours. The mixture was concentrated under reduced pressure and the resultant crude was diluted with CHCl3 (35 mL) and solid Na2CO3 (2.8 g). The mixture was allowed to stand for 1 hour before the organic layer was decanted off through filter paper. The remaining solid was diluted with CHCl3 (25 mL) and the mixture was heated to 60° C. in a water bath before the organic layer was decanted off through filter paper. This extraction process was repeated 8 times. The filtrates were combined and concentrated to give the title compound as a yellow solid (2.77 g, 96% crude yield). 1H NMR (CDCl3): δ 7.06–7.12 (m, 1H), 7.26 (dd, 1H, J=15.3, 6.6 Hz), 8.09 (d, 1H, J=6.6 Hz), 8.14–8.23 (m, 1H).
Preparation of 3-fluoro-2-pyridinecarbonitrile
To a solution of 3-fluoropyridine 1-oxide (1.21 g, 10.7 mmol) in CH3CN (10 mL) was added Et3N (4.4 mL, 31.6 mmol) followed by TMSCN (4.3 mL, 32.2 mmol) and the reaction was stirred at reflux for 6.5 hours. The mixture was diluted with CH2Cl2 (100 mL) and washed with saturated aqueous NaHCO3 (50 mL). The aqueous layer was extracted with CH2Cl2 (3×40 mL) and the combined organic layers were dried (Na2SO4), filtered and concentrated to give a crude dark red oil. Purification of the crude material by column chromatography on silica gel (CH2Cl2/MeOH, 98:2) afforded the title compound as a yellow solid (1.01 g, 77%). 1H NMR (CDCl3): δ 7.58–7.67 (m, 2H), 8.54–8.57 (m, 1H).
Preparation of 3-ethoxypicolinic acid
To a solution of 3-fluoro-2-pyridinecarbonitrile (0.99 g, 8.1 mmol) in H2O (3.1 mL) and EtOH (3.1 mL) was added solid NaOH pellets (3.24 g, 81 mmol) and the reaction stirred at 100° C. for 2 hours. The reaction mixture was cooled to room temperature, diluted with H2O (30 mL) and washed with Et2O (2×15 mL). The aqueous phase was acidified with 1N HCl (81 mL, pH 3–4) and extracted with a 2:1 mixture of CH2Cl2/EtOAc (20×30 mL) to give the desired acid as a yellow powdered solid (0.58 g, 43%). 1H NMR (CDCl3+CD3OD): δ 1.39 (t, 3H, J=7.0 Hz), 4.10 (q, 2H, J=7.0), 7.42–7.53 (m, 2H), 8.20–8.21 (m, 1H).
Preparation of 3-ethoxy-2-hydroxymethylpyridine
To a solution of 3-ethoxypicolinic acid (0.202 g, 1.21 mmol) in dry THF (1 mL) was added BH3.THF (1.0 M in THF, 5.0 mL, 5.0 mmol) and the reaction mixture stirred at room temperature for 2.5 hours. The mixture was then quenched with methanol (20 mL), stirred at reflux for 4 hours and concentrated under reduced pressure. The resultant crude product was dissolved in methanol (3×15 mL) and concentrated to give the desired crude alcohol (0.231 g) as an orange solid. 1H NMR (CDCl3): δ 1.46 (t, 3H, J=7.0 Hz), 4.07 (q, 2H, J=7.0 Hz), 4.74 (s, 2H), 7.09–7.20 (m, 2H), 8.14 (d, 1H, J=4.5 Hz).
Preparation of 3-ethoxy-2-pyridinecarboxaldehyde
To a solution of the crude alcohol from above (0.231 g) in CH2Cl2 (5.4 mL) was added activated manganese(IV) oxide (0.963 g, 11.1 mmol) and the reaction mixture stirred at room temperature for 15 hours. The resultant black suspension was filtered through celite and the cake was washed with CH2Cl2. The combined filtrates were evaporated under reduced pressure to give a yellow syrup (0.12 g). Purification of the crude oil by column chromatography on silica gel (CH2Cl2/MeOH, 98:2) gave the title compound as a clear oil (0.063 g, 34% over 2 steps). 1H NMR (CDCl3): δ 1.49 (t, 3H, J=7.0 Hz), 4.21 (q, 2H, J=7.0 Hz), 7.38 (d, 1H, J=8.6 Hz), 7.43 (dd, 1H, J=8.6, 4.4 Hz), 8.35 (d, 1H, J=4.4 Hz), 10.39 (s, 1H).
Using General Procedure B: To a stirred solution of N′-(1H-benzimidazol-2-ylmethyl)-N′-(5,6,7,8-tetrahydro-8-quinolinyl)-1,4-benzenedimethanamine (145 mg, 0.37 mmol) and 3-ethoxy-2-pyridinecarboxaldehyde (54 mg, 0.36 mmol) in CH2Cl2 (5 mL) was added NaBH(OAc)3 (110 mg, 0.52 mmol) and the resultant mixture was stirred at room temperature for 2.5 days. Purification of the crude material by radial chromatography on silica gel gel (2 mm plate, 75:1:1 CH2Cl2/MeOH/NH4OH) afforded the free amine (87 mg, 44%) as a white foam.
Using General Procedure D: Conversion of the foam from above (77 mg, 0.14 mmol) to the hydrobromide salt followed by re-precipitation of the intermediate solid from methanol/ether gave AMD9507 (110 mg, 95%) as a white solid. 1H NMR (D2O) 1.35 (t, 3H, J=6.9 Hz), 1.86–1.90 (m, 1H), 2.17–2.26 (m, 2H), 2.40–2.45 (m, 1H), 3.01–3.03 (m, 2H), 3.78 (d, 1H, J=12.6 Hz), 3.83 (d, 1H, J=12.6 Hz), 3.87 (d, 1H, J=13.8 Hz), 3.93 (d, 1H, J=13.8 Hz), 3.95 (d, 1H, J=14.1 Hz), 4.08 (d, 1H, J=14.1 Hz), 4.26 (q, 2H, J=6.9 Hz), 4.45 (d, 1H, J=16.5 Hz),), 4.64 (d, 1H, J=16.5 Hz), 4.77–4.79 (m, 1H, overlap with HOD), 7.06 (d, 2H, J=7.5 Hz), 7.25 (d, 2H, J=7.5 Hz), 7.29 (dd, 2H, J=6, 3 Hz), 7.51 (dd, 2H, J=6, 3 Hz), 7.89–7.93 (m, 2H), 8.06 (d, 1H, J=9 Hz), 8.29 (d, 1H, J=5.4 Hz), 8.38 (d, 1H, J=7.8 Hz), 8.76 (d, 1H, J=5.7 Hz); 13C NMR (D2O) □ 11.94, 18.27, 18.82, 25.70, 41.00, 48.03, 48.42, 54.61, 61.14, 64.96, 111.74 (2 carbons), 123.99, 124.31 (2 carbons), 126.61, 127.48, 127.85 (2 carbons), 128.21, 128.82 (2 carbons), 132.40, 133.11, 136.17, 137.54 (2 carbons), 138.88, 146.17 (2 carbons), 148.51, 149.70, 154.06. ES-MS m/z 533 (M+H). Anal. Calcd. for C33H36N6O.4.0HBr.2.8H2O: C, 43.71; H, 5.07; N, 9.27; Br, 35.25. Found: C, 43.65; H, 5.12; N, 9.12; Br, 35.41.
EXAMPLE: 70




AMD9508: Preparation of N-(1-oxo-2-pyridinylmethyl)-N′-(1H-benzimidazol-2-ylmethyl)-N′-(5,6,7,8-tetrahydro-8-quinolinyl)-1,4-benzenedimethanamine (hydrobromide salt)
Preparation of 2-hydroxymethyl-pyridine 1-oxide
To a solution of 2-pyridine carbinol (1.3 mL, 13.5 mmol) in acetic acid (glacial, 9 mL) was added a 30% solution of hydrogen peroxide in water (1.4 mL, 12 mmol) and the reaction stirred at 70° C. for 2 hours. A second portion of hydrogen peroxide was then added and the mixture stirred at 70° C. for an additional 15 hours. The reaction was concentrated and the resultant crude diluted with CHCl3 (20 mL) and solid Na2CO3 (1.56 g) and stirred for 1 hour before the organic layer was decanted off through filter paper. The remaining solid was diluted with CHCl3 (20 mL) and the mixture heated to 60° C. in a water bath before the organic layer was again decanted off through filter paper. This process was repeated 8 times. The filtrates were combined and concentrated to give the oxide as a white powdered solid. Purification by column chromatography on silica gel (CH2Cl2MeOH, 92:8) afforded the title compound (1.08 g, 64%). 1H NMR (CDCl3): δ 4.84 (s, 2H), 7.35–7.50 (m, 3H), 8.32 (d, 1H, J=6 Hz).
Preparation of 2-pyridine carboxaldehyde 1-oxide
To a solution of 2-hydroxymethyl-pyridine 1-oxide (0.23 g, 1.84 mmol) in CHCl3 (8 mL) was added activated manganese(IV) oxide (1.48 g, 17.0 mmol) and the reaction stirred at room temperature for 4 hours. The black suspension was then filtered through celite and the cake was washed with CHCl3 (100 mL). The combined filtrates were concentrated under reduced pressure to give a yellow oil (0.22 g). Purification of the crude product by column chromatography on silica gel (CH2Cl2/MeOH, 95:5) afforded the desired aldehyde (0.046 g, 20% but 66% based on recovered starting material). 1H NMR (CDCl3): δ 7.6–7.7 (m, 3H), 7.76 (dd, 1H, J=7.5, 1.8 Hz), 8.20 (d, 1H, J=6 Hz), 10.56 (s, 1H).
Using General Procedure A: To a stirred solution of N′-(1H-benzimidazol-2-ylmethyl)-N′-(5,6,7,8-tetrahydro-8-quinolinyl)-1,4-benzenedimethanamine (155 mg, 0.39 mmol) and 2-pyridine carboxaldehyde 1-oxide (45 mg, 0.37 mmol) in MeOH (4.5 mL) was added NaCNBH3 (50 mg, 0.8 mmol) and the resultant mixture was stirred at room temperature for 16 hours. Purification of the crude material by radial chromatography on silica gel gel (2 mm plate, 75:1:1 CH2Cl2/MeOH/NH4OH) afforded the free amine (71 mg, 38%) as a white foam.
Using General Procedure D: Conversion of the foam from above (71 mg, 0.14 mmol) to the hydrobromide salt followed by re-precipitation of the intermediate solid from methanol/ether gave AMD9508 (75 mg, 95%) as a pale yellow solid. 1H NMR (D2O) 1.85–1.93 (m, 1H), 2.18–2.31 (m, 2H), 2.40–2.45 (m, 1H), 3.02–3.04 (m, 2H), 3.76 (d, 1H, J=12.6 Hz), 3.82 (s, 2H), 3.84 (d, 1H, J=12.6 Hz), 3.90 (s, 2H), 4.45 (d, 1H, J=16.8 Hz), 4.64 (d, 1H, J=16.8 Hz), 4.75–4.79 (m, 1H, overlap with HOD), 7.04 (d, 2H, J=7.8 Hz), 7.21 (d, 2H, J=7.8 Hz), 7.27 (dd, 2H, J=6, 3 Hz), 7.51 (dd, 2H, J=6, 3 Hz), 7.56–7.68 (m, 3H), 7.93 (dd, 1H, J=7.5, 6 Hz), 8.28 (d, 1H, J=6 Hz), 8.40 (d, 1H, J=8.1 Hz), 8.77 (d, 1H, J=5.7 Hz); 13C NMR (D2O) □ 20.44, 20.98, 27.86, 45.81, 49.95, 50.27, 56.68, 63.37, 113.84 (2 carbons), 126.15, 126.46 (2 carbons), 128.56, 129.45, 129.81 (2 carbons), 130.40, 130.90 (2 carbons), 132.02, 138.11, 139.71 (2 carbons), 140.03 (2 carbons), 141.06, 148.34 (2 carbons), 150.75, 151.92. ES-MS m/z 505 (M+H). Anal. Calcd. for C31H32N6O.4.0HBr.2.2H2O: C, 42.90; H, 4.69; N, 9.68; Br, 36.83. Found: C, 43.06; H, 4.84; N, 9.55; Br, 36.73.
EXAMPLE: 71




AMD9540: Preparation of N-(3-bromo-2-pyridinylmethyl)-N′-(1H-benzimidazol-2-ylmethyl)-N′-(5,6,7,8-tetrahydro-8-quinolinyl)-1,4-benzenedimethanamine (hydrobromide salt)
Preparation of 3-bromo-2-pyridinecarboxaldehyde
To a solution of 3-bromo-2-picoline (prepared as described by Guthikonda, R. N.; Cama, L. D.; Quesada, M.; Woods, M. F.; Salzmann, T. N.; Christensen, B. G. J. Med. Chem. 1987, 30, 871–880) (249 mg, 1.45 mmol) in dioxane (2 mL) was added selenium(IV) oxide (212 mg, 1.91 mmol) and the mixture stirred at reflux overnight. The reaction mixture was concentrated under reduced pressure and purified by column chromatography on silica gel (Hexanes/ether, 3:1) to afford the title compound (78 mg, 29%) as a pale yellow solid. 1H NMR (CDCl3): δ 7.38 (dd, 1H, J=9, 6 Hz), 8.05 (d, 1H, J=9 Hz), 8.76 (d, 1H, J=3 Hz), 10.25 (s, 1H).
Using General Procedure B: To a stirred solution of N′-(1H-benzimidazol-2-ylmethyl)-N′-(5,6,7,8-tetrahydro-8-quinolinyl)-1,4-benzenedimethanamine (170 mg, 0.43 mmol) and 3-bromo-2-pyridinecarboxaldehyde (78 mg, 0.42 mmol) in CH2Cl2 (7 mL) was added NaBH(OAc)3 (152 mg, 0.72 mmol) and the resultant mixture was stirred at room temperature over the weekend. Purification of the crude material by radial chromatography on silica gel gel (2 mm plate, 75:1:1 CH2Cl2/MeOH/NH4OH) afforded the free amine (143 mg, 44%) as a white foam.
Using General Procedure D: Conversion of the foam from above (106 mg, 0.19 mmol) to the hydrobromide salt followed by re-precipitation of the intermediate solid from methanol/ether gave AMD9540 (140 mg, 86%) as a pale yellow solid. 1H NMR (D2O) 1.86–1.90 (m, 1H), 2.17–2.30 (m, 2H), 2.40–2.45 (m, 1H), 3.01–3.03 (br m, 2H), 3.77 (d, 1H, J=12.6 Hz), 3.83 (s, 2H), 3.85 (d, 1H, J=12.6 Hz), 4.07 (s, 2H), 4.44 (d, 1H, J=16.5 Hz), 4.63 (d, 1H, J=16.5 Hz), 4.66–4.79 (m, 1H, overlap with HOD), 7.07 (d, 2H, J=7.8 Hz), 7.23 (d, 2H, J=8.1 Hz), 7.31 (dd, 2H, J=6.3, 3.3 Hz), 7.52 (dd, 2H, J=6.3, 3.3 Hz), 7.91 (dd, 2H, J=7.8, 6.3 Hz), 8.03 (d, 1H, J=8.1 Hz), 8.38 (d, 1H, J=8.1 Hz), 8.50 (d, 1H, J=4.8 Hz), 8.76 (d, 1H, J=7.8 Hz); 13C NMR (D2O) □ 120.46, 20.95, 27.86, 49.33, 50.08, 50.24, 56.69, 63.22, 113.86, 120.28, 125.83, 126.13, 126.61, 130.30, 130.32, 130.40, 130.86, 138.08, 139.71, 141.02, 141.91, 148.12, 148.31, 149.04, 150.77, 151.78. ES-MS m/z 569 (M+H). Anal. Calcd. for C31H31N6Br.3.3HBr.2.1H2O: C, 42.68; H, 4.45; N, 9.63; Br, 39.39. Found: C, 42.68; H, 4.45; N, 9.30; Br, 39.44.
EXAMPLE: 72




AMD9565: Preparation of N-(3-cyano-2-pyridinylmethyl)-N′-(1H-benzimidazol-2-ylmethyl)-N′-(5,6,7,8-tetrahydro-8-quinolinyl)-1,4-benzenedimethanamine (hydrobromide salt)
Preparation of 3-cyano-2-picoline
To a mixture of 3-cyano-2-chloro-pyridine (422 mg, 3.05 mmol), methylboronic acid (209 mg, 3.49 mmol) and K2CO3 (1.22 g, 8.83 mmol) in degassed dioxane (5 mL) under argon was added Pd(PPh3)4 (222 mg, 0.19 mmol) and the mixture stirred at reflux over the weekend. The reaction was cooled to room temperature, diluted with CH2Cl2 (20 mL) and filtered through Celite, washing the cake with CH2Cl2 and MeOH. The filtrate was concentrated in vacuo and purified by column chromatography on silica gel (Hexanes/ethyl acetate, 9:1 then 4:1) to afford the desired product (166 mg, 46%) as a white solid. 1H NMR (CDCl3): δ 2.78 (s, 3H), 7.25 (dd, 1H, J=9, 6 Hz), 7.90 (dd, 1H, J=6, 3 Hz), 8.69 (d, 1H, J=3 Hz).
Preparation of 3-cyano-2-pyridinecarboxaldehyde
To a solution of 3-cyano-2-picoline (166 mg, 1.41 mmol) in dioxane (3 mL) was added water (0.2 mL) and selenium(IV) oxide (228 mg, 2.05 mmol) and the mixture stirred at reflux overnight. The reaction mixture was concentrated under reduced pressure and purified by column chromatography on silica gel (Hexanes/ether, 3:1 then 1:1) to afford the title compound (18 mg, 10%) as a pale yellow solid. 1H NMR (CDCl3): δ 7.69 (dd, 1H, J=9, 6 Hz), 8.20 (d, 1H, J=9 Hz), 9.00 (d, 1H, J=3 Hz), 10.13 (s, 1H).
Using General Procedure B: To a stirred solution of N′-(1H-benzimidazol-2-ylmethyl)-N′-(5,6,7,8-tetrahydro-8-quinolinyl)-1,4-benzenedimethanamine (60 mg, 0.15 mmol) and 3-cyano-2-pyridinecarboxaldehyde (18 mg, 0.14 mmol) in CH2Cl2 (4 mL) was added NaBH(OAc)3 (45 mg, 0.21 mmol) and the mixture stirred at room temperature for 5 h. Purification of the crude material by radial chromatography on silica gel gel (1 mm plate, CH2Cl2/MeOH/NH4OH, 75:1:1 followed by 50:1:1) afforded the free amine (29 mg, 45%) as a yellow foam.
Using General Procedure D: Conversion of the foam from above (29 mg, 0.057 mmol) to the hydrobromide salt followed by re-precipitation of the intermediate solid from methanol/ether gave AMD9565 (46 mg, 92%) as a pale yellow solid. 1H NMR (D2O) 1.86–1.90 (m, 1H), 2.17–2.28 (m, 2H), 2.35–2.41 (m, 1H), 3.01–3.03 (br m, 2H), 3.76 (d, 1H, J=12.6 Hz), 3.85 (d, 1H, J=12.6 Hz), 4.40 (s, 2H), 4.46 (d, 1H, J=16.5 Hz), 4.56 (s, 2H), 4.63 (d, 1H, J=16.5 Hz), 4.77–4.79 (m, 1H, overlap with HOD), 7.02 (d, 2H, J=7.8 Hz), 7.07 (dd, 2H, J=6, 3 Hz), 7.23 (d, 2H, J=7.8 Hz), 7.44 (dd, 2H, J=6, 3 Hz), 7.75 (dd, 1H, J=7.8, 5.1 Hz), 7.92 (dd, 1H, J=7.2, 6.6 Hz), 8.39 (d, 1H, J=8.1 Hz), 8.44 (d, 1H, J=8.1 Hz), 8.76 (d, 1H, J=6 Hz), 8.90 (d, 1H, J=5.1 Hz); 13C NMR (D2O) □ 20.44, 20.98, 27.86, 48.70, 50.40, 56.76 (2 carbons), 63.50, 113.54, 123.64, 124.92, 126.12, 126.27, 128.39, 130.29, 130.97, 133.07, 133.55, 136.96, 139.67, 141.06, 148.31, 150.80, 152.08, 154.43, 160.94, 161.16. ES-MS m/z 514 (M+H). Anal. Calcd. for C32H31N7.3.7HBr.4.1H2O: C, 43.34; H, 4.88; N, 11.06; Br, 33.34. Found: C, 43.59; H, 4.81; N, 10.92; Br, 33.09.
EXAMPLE: 73




AMD9604: Preparation of N-(3-t-butylthio-2-pyridinylmethyl)-N′-(1H-benzimidazol-2-ylmethyl)-N′-(5,6,7,8-tetrahydro-8-quinolinyl)-1,4-benzenedimethanamine (hydrobromide salt)
Preparation of 2-(3-tert-butylthio)pyridylmethyl acetate
To a solution of 3-bromo-2-picoline (prepared as described by Guthikonda, R. N.; Cama, L. D.; Quesada, M.; Woods, M. F.; Salzmann, T. N.; Christensen, B. G. J. Med. Chem. 1987, 30, 871–880) (1.102 g, 6.41 mmol) in acetic acid (10 mL) was added a 30% wt. aqueous, solution of hydrogen peroxide in water (2 mL) and the mixture warmed to 70° C. overnight. An additional portion of hydrogen peroxide (1 mL) was then added and the mixture stirred at 70° C. for another 4 h before being cooled to room temperature and concentrated under reduced pressure. The resultant crude was diluted with CHCl3 (25 mL) and solid Na2CO3 (1.8 g) and the mixture allowed to stand for 1 h with occasional stirring. The solution was then filtered and the remaining Na2CO3 solid extracted with CHCl3 (4×20 mL). The combined CHCl3 extracts were concentrated to afford the crude N-oxide (1.29 g) which was used without further purification in the next reaction.
To a solution of the N-oxide from above (1.29 g, 6.4 mmol) in DMF (20 mL) was added the sodium salt of 2-methyl-2-propanethiol (2.10 g, 19.0 mmol) and the resultant suspension stirred at 80° C. for 1 h then at room temperature overnight. The mixture was concentrated under reduced pressure and diluted with ethyl acetate (100 mL). The organic layer was washed with brine (3×75 mL), dried (Na2SO4), filtered and concentrated under reduced pressure. The resultant crude yellow oil (1.02 g) was used without further purification in the next step.
A solution of the crude N-oxide from above (1.02 g) in acetic anhydride (5 mL) was heated to 80° C. for 2 d. The mixture was then cooled to room temperature, diluted with CH2Cl2 (15 mL) and MeOH (3 mL) and concentrated under reduced pressure. The residue was diluted with CH2Cl2 (40 mL) and saturated aqueous sodium bicarbonate (40 mL), the phases separated and the aqueous layer extracted with CH2Cl2 (2×25 mL). The combined organic extracts were dried (Na2SO4), filtered and concentrated under reduced pressure. Purification by column chromatography on silica gel (Hexanes/EtOAc, 4:1) afforded the title compound (0.66 g, 43% over 3 steps). 1H NMR (CDCl3) 1.33 (s, 9H), 2.16 (s, 3H), 5.52 (s, 2H), 7.26 (dd, 1H, J=9, 6 Hz), 7.87 (d, 1H, J=9 Hz), 8.62 (d, 1H, J=6 Hz).
Preparation of 3-(tert-butylthio)pyridine-2-carboxaldehyde
To a solution of the acetate from above (0.284 g, 1.20 mmol) in MeOH (5 mL) was added powdered K2CO3 (0.335 g, 2.43 mmol) and the mixture stirred at room temperature for 3 h. The reaction was diluted with CH2Cl2 (40 mL) and water (30 mL). The phases were separated and the aqueous layer was extracted with CH2Cl2 (2×20 mL). The combined organic extracts were dried (Na2SO4), filtered and concentrated under reduced pressure. The resultant alcohol (0.22 g) was used without further purification in the next reaction.
To a solution of the alcohol from above (0.22 g) in CH2Cl2 (10 mL) was added activated MnO2 (1.221 g, 14.2 mmol) and the mixture stirred at room temperature overnight. The reaction mixture was filtered through Celite and the cake was washed with CH2Cl2. The solvent was removed from the filtrate under reduced pressure and purification of the resultant crude yellow oil by column chromatography on silica gel (Hexanes/EtOAc, 3:1) afforded the desired aldehyde (0.14 g, 60% over 2 steps) as a yellow oil. 1H NMR (CDCl3)  1.34 (s, 9H), 7.48 (dd, 1H, J=9, 6 Hz), 8.00 (d, 1H, J=9 Hz), 8.83 (d, 1H, J=6 Hz), 10.78 (s, 1H).
Using General Procedure B: To a stirred solution of N′-(1H-benzimidazol-2-ylmethyl)-N′-(5,6,7,8-tetrahydro-8-quinolinyl)-1,4-benzenedimethanamine (81 mg, 0.20 mmol) and 3-(tert-butylthio)pyridine-2-carboxaldehyde (40 mg, 0.21 mmol) in CH2Cl2 (5 mL) was added NaBH(OAc)3 (60 mg, 0.28 mmol) and the mixture was stirred at room temperature for 3 h. Purification of the crude material by radial chromatography on silica gel (1 mm plate, CH2Cl2/MeOH/NH4OH, 75:1:1 then 50:1:1) afforded the desired amine (43 mg, 37%) as a yellow foam.
Using General Procedure D: Conversion of the foam from above (25 mg, 0.043 mmol) to the hydrobromide salt followed by re-precipitation of the intermediate solid from methanol/ether gave AMD9604 (39 mg, 98%) as a white solid. 1H NMR (D2O) 1.15 (s, 9H), 1.86–1.91 (m, 1H), 2.18–2.26 (m, 2H), 2.41–2.46 (m, 1H), 3.02–3.04 (br m, 2H), 3.77 (d, 1H, J=12.6 Hz), 3.79 (s, 2H), 3.85 (d, 1H, J=12.6 Hz), 4.35 (s, 2H), 4.41 (d, 1H, J=16.5 Hz), 4.61 (d, 1H, J=16.5 Hz), 4.70–4.79 (m, 1H, overlap with HOD), 7.04 (d, 2H, J=7.8 Hz), 7.21 (d, 2H, J=7.8 Hz), 7.36–7.44 (m, 3H), 7.55 (dd, 2H, J=6, 3 Hz), 7.92 (dd, 1H, J=7.8, 6 Hz), 7.95 (dd, 1H, J=7.8, 1.5 Hz), 8.39 (d, 1H, J=7.8 Hz), 8.56 (dd, 1H, J=4.8, 1.5 Hz), 8.75 (d, 1H, J=5.1 Hz); 13C NMR (D2O) □ 20.44, 20.85, 27.83, 30.32, 48.53, 49.39, 49.98 (2 carbons), 56.57, 62.94, 113.89, 124.82, 126.14, 126.67, 129.00, 130.25, 130.37, 130.49, 130.73, 138.08, 139.70, 141.04, 148.16, 148.32, 149.45, 150.79, 151.66, 154.45. ES-MS m/z 577 (M+H). Anal. Calcd. for C35H40N6S.3.7HBr.2H2O: C, 46.08; H, 5.27; N, 9.21; Br, 32.41. Found: C, 46.16; H, 5.15; N, 8.99; Br, 32.33.
EXAMPLE: 74




AMD9602: Preparation of N-(2-fluorobenzyl)-N′-(1H-benzimidazol-2-ylmethyl)-N′-(5,6,7,8-tetrahydro-8-quinolinyl)-1,4-benzenedimethanamine (hydrobromide salt)
2-Fluorobenzaldehyde (0.05 mL, 0.5 mmol) was condensed with N′-(1H-benzimidazol-2-ylmethyl)-N′-(5,6,7,8-tetrahydro-8-quinolinyl)-1,4-benzenedimethanamine (200 mg, 0.529 mmol) in MeOH (5 mL) for 1 hour at room temperature and the resultant imine was reduced with sodium borohydride (38 mg, 1.0 mmol) for 2 h (see General Procedures A and B). Purification of the crude residue by column chromatography on silica gel (CH2Cl2/MeOH, 95:5) yielded the alkylated product (215 mg, 81%) as a pale foam. 1H NMR (CDCl3)  1.65 (m, 1H), 1.99 (m, 1H), 2.24 (m, 1H), 2.71 (m, 2H), 3.47 (s, 2H), 3.63 (d, 2H, J=5.1 Hz), 3.68 (s, 2H), 3.78 (s, 2H), 3.95 (d, 1H, J=16.1 Hz), 4.02 (m, 1H), 4.12 (d, 1H, J=16.1 Hz), 6.99 (t, 1H, J=9.0 Hz), 7.07 (t, 1H, J=7.4 Hz), 7.17 (m, 6H), 7.29 (dd, 1H, J=7.4, 1.2 Hz), 7.35–7.42 (m, 3H), 7.55 (br s, 2H), 8.60 (d, 1H, J=5.8 Hz).
Conversion of the foam from above (110 mg, 0.2 mmol) to the hydrobromide salt using General Procedure D followed by re-precipitation of the intermediate solid from methanol/ether gave AMD9602 (115 mg) as a white solid. 1H NMR (D2O) □ 1.90 (m, 1H), 2.25 (m, 2H), 2.43 (m, 1H), 3.04 (m, 2H), 3.74 (s, 2H), 3.79 (d, 1H, J=12.3 Hz), 3.82 (s, 2H), 3.87 (d, 1H, J=12.3 Hz), 4.46 (d, 1H, J=16.8 Hz), 4.64 (d, 1H, J=16.8 Hz), 4.78 (m, 1H), 7.03 (d, 2H, J=7.8 Hz), 7.27 (m, 8H), 7.51 (m, 3H), 7.94 (dd, 1H, J=5.8, 8.1 Hz), 8.39 (d, 1H, J=8.1 Hz), 8.77 (d, 1H, J=5.7 Hz). 13C NMR (D2O) 20.44, 21.08, 27.85, 44.01, 49.70, 50.27, 56.70, 63.36, 113.85 (2C), 116.21 (d, JC-F=21.0 Hz), 118.04 (d, JC-F=14.9 Hz), 125.48, 126.13, 126.59 (2C), 129.92 (2C), 130.39, 130.88 (2C), 132.56, 132.80 (d, JC-F=8.2 Hz), 137.94, 139.69, 141.04, 148.31, 151.32 (d, JC-F=83.6 Hz), 161.03 (d, JC-F=247 Hz). ES-MS m/z 506 (M+H); Anal. Calcd. for (C32H32N5F×2 HBr×3H2O): C, 49.00; H, 5.01; N, 8.93; Br 30.56. Found: C, 49.37; H, 4.89; N, 8.77; Br, 30.21.
EXAMPLE: 75




AMD9621: Preparation of N-(2,6-difluorobenzyl)-N′-(1H-benzimidazol-2-ylmethyl)-N′-(5,6,7,8-tetrahydro-8-quinolinyl)-1,4-benzenedimethanamine (hydrobromide salt)
Hydrobromide Salt
2,6-Difluorobenzaldehyde (79 mg, 0.56 mmol) was condensed with N′-(1H-benzimidazol-2-ylmethyl)-N′-(5,6,7,8-tetrahydro-8-quinolinyl)-1,4-benzenedimethanamine (217 mg, 0.55 mmol) in dry MeOH (5 mL) for 1.5 hour at room temperature and the resultant imine was reduced with sodium borohydride (45 mg, 1.19 mmol) for 1 h (see General Procedures A and B). Purification of the crude material by radial chromatography on silica gel gel (4 mm plate, CH2Cl2/MeOH/NH4OH, 100:1:1 then 50:1:1) afforded the free amine (234 mg, 81%) as a white foam.
Conversion of the foam from above (134 mg, 0.26 mmol) to the hydrobromide salt using General Procedure D followed by re-precipitation of the intermediate solid from methanol/ether gave AMD9621 (165 mg, 81%) as a white solid. 1H NMR (D2O) 1.86–1.91 (m, 1H), 2.18–2.27 (m, 2H), 2.41–2.46 (m, 1H), 3.01–3.03 (br m, 2H), 3.72 (d, 1H, J=12.3 Hz), 3.75 (s, 2H), 3.79 (s, 2H), 3.85 (d, 1H, J=12.3 Hz), 4.45 (d, 1H, J=16.5 Hz), 4.64 (d, 1H, J=16.5 Hz), 4.76–4.79 (m, 1H, overlap with HOD), 7.02–7.10 (m, 4H), 7.24 (d, 2H, J=7.5 Hz), 7.31 (dd, 2H, J=6, 3 Hz), 7.46–7.56 (m, 3H), 7.92 (dd, 1H, J=7.2, 6.6 Hz), 8.39 (d, 1H, J=7.8 Hz), 8.77 (d, 1H, J=5.7 Hz); 13C NMR (D2O) □ 20.47, 21.01, 27.88, 37.55, 49.84, 50.28, 56.69, 63.33, 107.10 (t, 2JC-F=19.1 Hz), 112.36 (d, 2JC-F=23.6 Hz), 113.89, 126.15, 126.56, 129.88, 130.21, 130.40, 130.94, 133.42 (t, 3JC-F=10.6 Hz), 137.96, 139.72, 141.04, 148.33, 150.76, 151.89, 161.55 (dd, 1JC-F=248.2 Hz, 3JC-F=26.4 Hz). ES-MS m/z 524 (M+H). Anal. Calcd. for C32H31N5F2.3.0HBr.1.7H2O: C, 48.23; H, 4.73; N, 8.79; Br, 30.08. Found: C, 48.25; H, 4.82; N, 8.76; Br, 30.02.
EXAMPLE: 76




AMD9674: Preparation of N-(3-methylsulphonamido-pyridin-2-ylmethyl)-N′-(1H-benzimidazol-2-ylmethyl)-N′-(5,6,7,8-tetrahydro-8-quinolinyl)-1,4-benzenedimethanamine (hydrobromide salt)
Preparation of 3-methylsulfonamido-2-pyridinecarboxaldehyde
To a solution of 2-methyl-3-nitropyridine (prepared as described by Liu, M.-C.; Lin, T.-S.; Sartorelli, A. C. Synthetic Comm. 1990, 20, 2965–2970) (5.21 g, 37.7 mmol) in MeOH (20 mL) in a Parr bottle was added 10% palladium on carbon (521 mg) and the mixture hydrogenated at 35 psi hydrogen in a Parr hydrogenator for 1 h. The product mixture was filtered through celite and the solvent from the eluent removed in vacuo to afford 2-methyl-3aminopyridine (4.00 g, 99%) as a brown solid.
To a solution of the solid from above (998 mg, 9.33 mmol) in THF (46 mL) at room temperature was added triethylamine (1.95 mL, 14.0 mmol) and methanesulfonyl chloride (0.65 mL, 8.40 mmol) and the mixture stirred overnight. The reaction was diluted with CH2Cl2 (50 mL) and saturated aqueous NaHCO3 (25 mL) and the aqueous layer extracted with CH2Cl2 (3×15 mL). The combined organic extracts were dried (Na2SO4), filtered and concentrated under reduced pressure. Purification of the resultant brown oil by column chromatography on silica gel (EtOAc/MeOH, 19:1) afforded the desired 3-methylsulfonamido-2-methylpyridine (310 mg, 18%) along with some of the bis-sulfonylated product (484 mg, 20%). 3-Methylsulfonamido-2-methylpyridine: 1H NMR (CDCl3) □ 2.58 (s, 3H), 3.05 (s, 3H), 6.37 (br s, 1H, NH), 7.20 (dd, 1H, J=9, 6 Hz), 7.81 (dd, 1H, J=9, 3 Hz), 8.38 (dd, 1H, J=6, 3 Hz).
To a solution of 3-methylsulfonamido-2-methylpyridine (310 mg, 1.66 mmol) in dioxane (8 mL) was added water (0.8 mL) and selenium(IV) oxide (241 mg, 2.17 mmol) and the mixture stirred at reflux overnight. The reaction mixture was concentrated under reduced pressure and purified by column chromatography on silica gel (Hexanes/ethyl acetate, 1:1) to afford the title compound (278 mg, 83%). 1H NMR (CDCl3) □ 3.14 (s, 3H), 7.53 (dd, 1H, J=9, 6 Hz), 8.16 (dd, 1H, J=9, 3 Hz), 8.53 (dd, 1H, J=6, 3 Hz), 10.09 (s, 1H), 10.41 (br s, 1H, NH).
3-Methylsulfonamido-2-pyridinecarboxaldehyde (0.100 mL, 0.50 mmol) was condensed with N′-(1H-benzimidazol-2-ylmethyl)-N′-(5,6,7,8-tetrahydro-8-quinolinyl)-1,4-benzenedimethanamine (204 mg, 0.51 mmol) in dry MeOH (5 mL) for 17 h at room temperature and the resultant imine was reduced with sodium borohydride (38 mg, 1.00 mmol) for 1 h (see General Procedures A and B). Purification of the crude product by radial chromatography (2 mm TLC plate, CH2Cl2/CH3OH/NH4OH, 50:1:1) followed by basic alumina flash chromatography (8 g alumina, CH2Cl2/CH3OH, 60:1) afforded the alkylated amine (59 mg, 20%) as a foam.
Using General Procedure D: Conversion of the foam from above (59 mg) to the hydrobromide salt followed by re-precipitation of the intermediate solid from methanol/ether gave AMD9674 (74 mg, 78%) as a solid. 1H NMR (D2O) □ 1.81–1.96 (m, 1H), 2.14–2.34 (m, 2H), 2.37–2.48 (m, 1H), 2.99–3.06 (m, 2H), 3.08 (s, 3H), 3.74–3.87 (m, 4H), 4.17 (s, 2H), 4.43 (d, 1H, J=16.2 Hz), 4.61 (d, 1H, J=16.2 Hz), 7.03 (d, 2H, J=7.7 Hz), 7.21 (d, 2H, J=7.6 Hz), 7.36 (dd, 2H, J=6.3, 3.1 Hz), 7.46–7.57 (m, 3H), 7.79, (d, 1H, J=7.8 Hz), 7.90 (t, 1H, J=6.8 Hz), 8.38 (d, 1H, J=8.4 Hz), 8.54 (d, 1H, J=4.8 Hz), 8.74 (d, 1H, J=5.8 Hz). 13C NMR (D2O) d 20.43, 20.86, 27.83, 39.32, 46.80, 50.08, 56.59, 63.06, 113.86 (2 carbons), 125.61, 126.10, 126.61 (2 carbons), 130.21 (2 carbons), 130.47, 130.77 (2 carbons), 136.73, 138.05, 139.66, 141.01, 148.28 (2 carbons), 148.73 (2 carbons), 149.49, 150.81, 151.74. ES-MS m/z 582 (M+H) Anal Calc. for C32H35N7SO2.4.0HBr.2.1H2O: C, 40.75; H, 4.62; N, 10.39; S, 3.40; Br, 33.89. Found: C, 40.81; H, 4.56; N, 10.31; S, 3.33; Br, 33.75.
EXAMPLE: 77




AMD9682: Preparation of N-((methylene-2,3-dioxy)benzenemethyl)-N′-(1H-benzimidazol-2-ylmethyl)-N′-(5,6,7,8-tetrahydro-8-quinolinyl)-1,4-benzenedimethanamine
3-(Methylenedioxy)benzaldehyde (0.100 mL, 0.50 mmol) was condensed with N′-(1H-benzimidazol-2-ylmethyl)-N′-(5,6,7,8-tetrahydro-8-quinolinyl)-1,4-benzenedimethanamine (226 mg, 0.59 mmol) in dry MeOH (2.5 mL) for 2 h at room temperature and the resultant imine was reduced with sodium borohydride (43 mg, 1.14 mmol) for 18 h (see General Procedures A and B). Purification of the crude product by column chromatography on silica gel afforded the title compound (57 mg, 19%) as a white solid. 1H NMR (CDCl3) □ 1.97–2.08 (m, 2H), 2.23–2.29 (m, 1H), 2.69–2.86 (m, 2H), 3.07 (br s, 2H), 3.73 (s, 2H), 3.74 (s, 4H), 3.96 (d, 1H, J=17.1 Hz), 4.08 (dd, 1H, J=9.3, 6.3 Hz, 4.17 (d, 1H, J=16.8 Hz), 5.91 (s, 2H), 6.7–6.77 (m, 5H), 7.15–7.21 (m, 6H), 7.34 (s, 1H), 7.37 (s, 1H), 7.43 (d, 1H, J=7.2 Hz), 7.21–7.81 (m, 1H), 7.32–7.92 (m, 1H), 8.69 (d, 1H, J=4.5 Hz); 13C NMR (CDCl3) δ 21.79, 23.78, 29.63, 47.73, 48.90, 53.08, 54.12, 60.62, 101.12, 107.84, 121.85, 121.91 (2C), 122.64 (2C), 128.62 (2C), 129.04 (2C), 135.12, 137.60, 138.47, 139.18, 145.90, 147.31, 147.58, 156.70, 157.86; ES-MS m/z 532 (M+H). Anal. Calcd. for C31H32N6.0.9H2O: C, 72.35; H, 6.40; N, 12.78. Found: C, 72.40; H, 6.16; N, 12.54.
EXAMPLE: 78




AMD9683: Preparation of N-benzyl-N′-(1H-benzimidazol-2-ylmethyl)-N′-(5,6,7,8-tetrahydro-8-quinolinyl)-1,4-benzenedimethanamine (hydrobromide salt)
Benzaldehyde (0.5 mL, 4.92 mmol) was condensed with N′-(1H-benzimidazol-2-ylmethyl)-N′-(5,6,7,8-tetrahydro-8-quinolinyl)-1,4-benzenedimethanamine (170 mg, 0.428 mmol) in dry MeOH (3 mL) for 17 h at room temperature and the resultant imine was reduced with sodium borohydride (329 mg, 8.70 mmol) for 1 h (see General Procedures A and B). Purification of the crude product by flash chromatography (14 g silica, 30:1:1 EtOAc/CH3OH/NH4OH) followed by radial chromatography (2 mm TLC plate, 100:1:1 CH2Cl2/CH3OH/NH4OH) gave the N-alkylated product (54 mg, 26%) as a foam.
Using General Procedure D: Conversion of the foam from above (68 mg, 81%) to the hydrobromide salt followed by re-precipitation of the intermediate solid from methanol/ether AMD9683 (68 mg, 81%) as a solid. 1H NMR (D2O) □ 1.81–1.96 (m, 1H), 2.15–2.33 (m, 2H), 2.37–2.49 (m, 1H), 2.98–3.07 (m, 2H), 3.66 (s, 2H), 3.76–3.88 (m, 4H), 4.44 (d, 1H, J=16.6 Hz), 4.63 (d, 1H, J=16.6 Hz), 7.00 (d, 2H, J=7.9 Hz), 7.22 (d, 2H, J=7.8 Hz), 7.27 (dd, 2H, J=6.2, 3.1 Hz), 7.30–7.34 (m, 2H), 7.45–7.52 (m, 5H), 7.92 (dd, 1H, J=7.6, 6.1 Hz), 8.39 (d, 1H, J=7.9 Hz), 8.76 (d, 1H, J=5.3 Hz). 13C (D2O) □ 20.44, 20.97, 27.85, 49.59, 50.27, 50.64, 56.72, 63.37, 113.85 (2 carbons), 126.13, 126.62 (2 carbons), 129.71 (2 carbons), 130.02 (2 carbons), 130.21, 130.36 (2 carbons), 130.43, 130.57, 130.73, 130.86 (2 carbons), 137.93, 139.70, 141.04, 148.30 (2 carbons), 150.79, 151.57. ES-MS m/z 488 (M+H) Anal Calc. for C32H33N5.3.2HBr.0.6H2O: C, 50.75; H, 4.98; N, 9.25; Br, 33.76. Found: C, 50.66; H, 5.18; N, 9.23; Br, 33.92.
EXAMPLE: 79




AMD9544: Preparation of N-(3-chloro-2-pyridinylmethyl)-N′-(1H-benzimidazol-2-ylmethyl)-N′-(5,6,7,8-tetrahydro-8-quinolinyl)-1,4-benzenedimethanamine (hydrobromide salt)
p Preparation of 3-chloro-pyridine-2-carboxaldehyde
To a solution of TMEDA (660 uL, 2.58 mmol) in ether (20 mL) at −78° C. was added a solution of n-butyl lithium in ether (2.5 M, 1.76 mL, 4.40 mmol). After 30 minutes at −78° C., 3-chloropyridine (419 uL, 4.40 mmol) was added. After another 2 hours at −78° C., DMF (375 uL, 4.84 mmol) was added. After a further 2 hours at −78° C., the reaction was quenched with saturated aqueous NaHCO3 (20 mL), extracted with ether (4×15 mL), dried (Na2SO4), filtered and concentrated in vacuo to give the crude oil. Purification by column chromatography on silica gel (Hexanes: EtOAc 4:1) afforded the title compound as a crystalline solid (168 mg, 27%). 1H NMR (CDCl3) 7.45 (dd, 1H, J=8.3, 4.4 Hz), 7.83 (dd, 1H, J=4.8, 1.4 Hz), 8.70 (dd, 1H, J=4.8, 1.5 Hz), 10.28 (s, 1H).
Using General Procedure B: To a stirred solution of N′-(1H-benzimidazol-2-ylmethyl)-N′-(5,6,7,8-tetrahydro-8-quinolinyl)-1,4-benzenedimethanamine (171 mg, 0.43 mmol) and 3-chloro-pyridine-2-carboxaldehyde (56 mg, 0.40 mmol) in CH2Cl2 (5 mL) was added NaBH(OAc)3 (123 mg, 0.58 mmol) and the mixture was stirred at room temperature for 22 h. Purification of the crude material by radial chromatography on silica gel (1 mm plate, CH2Cl2/MeOH/NH4OH, 200:1:1) afforded the desired amine (94 mg, 45%) as a yellow foam.
Using General Procedure D: Conversion of the foam from above (94 mg, 0.18 mmol) to the hydrobromide salt followed by re-precipitation of the intermediate solid from methanol/ether gave AMD9544 (138 mg, 90%) as a white solid. 1H NMR (D2O) 1.81–1.98 (m, 1H), 2.16–2.34 (m, 2H), 2.39–2.50 (m, 1H), 3.00–3.08 (m, 2H), 3.76–3.91 (m, 4H), 4.12 (s, 2H), 4.46 (d, 1H, J=16.2 Hz), 4.65 (d, 1H, J=16.7 Hz), 7.09 (d, 2H, J=7.9 Hz), 7.25 (d, 2H, J=7.9 Hz), 7.34 (dd, 2H, J=6.4, 2.8 Hz), 7.42 (dd, 1H, J=8.0, 4.9 Hz), 7.55 (dd, 2H, J=6.2, 3.1 Hz), 7.90 (d, 1H, J=8.0 Hz), 7.94 (d, 1H, J=5.8 Hz), 8.40 (d, 1H, J=8.0 Hz), 8.49 (d, 1H, J=4.8 Hz), 8.77 (d, 1H, J=5.7 Hz). 13C NMR (D2O) 20.46, 20.96, 27.86, 47.54, 50.13, 20.24, 56.70, 63.26, 113.86 (2 carbons), 125.74, 126.13, 126.61 (2 carbons), 130.27 (2 carbons), 130.42, 130.86 (2 carbons), 138.09, 138.69 (2 carbons), 139.70, 141.03, 147.70 (2 carbons), 147.84, 148.31 (2 carbons), 150.79, 151.81. ES-MS m/z 523 (M+H) Anal Calc. for C31H31N6Cl.3.5HBr.2.4H2O: C, 43.83; H, 4.66; N, 9.89; Cl, 4.17; Br, 32.92. Found: C, 43.88; H, 4.58; N, 9.63; Cl, 4.16; Br, 32.82.
EXAMPLE: 80




AMD9545: Preparation of N-(3-chloro-5-(trifluoromethyl)-2-pyridinylmethyl)-N′-(1H-benzimidazol-2-ylmethyl)-N′-(5,6,7,8-tetrahydro-8-quinolinyl)-1,4-benzenedimethanamine (hydrobromide salt)
Using General Procedure B: To a stirred solution of N′-(1H-benzimidazol-2-ylmethyl)-N′-(5,6,7,8-tetrahydro-8-quinolinyl)-1,4-benzenedimethanamine (133 mg, 0.34 mmol) and 3-chloro-5-(trifluoromethyl)-pyridine-2-carboxaldehyde (66 mg, 0.32 mmol) in CH2Cl2 (5 mL) was added NaBH(OAc)3 (93 mg, 0.44 mmol) and the mixture was stirred at room temperature for 16 h. Purification of the crude material by radial chromatography on silica gel (1 mm plate, CH2Cl2/MeOH/NH4OH, 75:1:1) afforded the desired amine (48 mg, 26%) as a yellow foam.
Using General Procedure D: Conversion of the foam from above (48 mg, 0.081 mmol) to the hydrobromide salt followed by re-precipitation of the intermediate solid from methanol/ether gave AMD9545 (42 mg, 58%) as a white solid. 1H NMR (D2O) 1.82–1.98 (m, 1H), 2.14–2.34 (m, 2H), 2.99–3.07 (m, 2H), 3.74–3.89 (m, 4H), 4.26 (s, 2H), 4.45 (d, 1H, J=16.3 Hz), 4.63 (d, 1H, J=16.3 Hz), 7.06 (d, 2H, J=7.7 Hz), 7.22 (d, 2H, J=7.7 Hz), 7.37 (dd, 2H, J=6.3, 3.2 Hz), 7.55 (dd, 2H, J=6.3, 3.2 Hz), 7.92 (dd, 1H, J=7.9, 6.1 Hz), 8.26 (s, 1H), 8.39 (d, 1H, J=6.9 Hz), 8.76 (d, 1H, J=4.4 Hz), 8.80 (s, 1H). 13C NMR (D2O) 20.44, 20.92, 27.84, 47.65, 50.25 (2 carbons), 56.64, 63.20, 113.87 (2 carbons), 126.11, 126.57 (2 carbons), 130.15, 130.34 (2 carbons), 130.52, 130.78 (2 carbons), 135.85 (2 carbons), 138.17, 139.69, 141.07, 144.42 (2 carbons), 148.26, 150.83, 151.82, 152.29. ES-MS m/z 591 (M+H) Anal Calc. for C31H32N6O.2.9HBr.3.3H2O: C, 43.42; H, 4.50; N, 9.49; Cl, 4.01; Br, 26.18. Found: C, 43.53; H, 4.35; N, 9.37; Cl, 3.97; Br, 25.98.
EXAMPLE: 81




AMD9658: Preparation of N-(3-Nitro-pyrid-2-ylmethyl)-N′-(1H-benzimidazol-2-ylmethyl)-N′-(5,6,7,8-tetrahydro-8-quinolinyl)-1,4-benzenedimethanamine (hydrobromide salt)
Using General Procedure B: To a stirred solution of N′-(1H-benzimidazol-2-ylmethyl)-N′-(5,6,7,8-tetrahydro-8-quinolinyl)-1,4-benzenedimethanamine (582 mg, 1.46 mmol) and 3-nitro-pyridine-2-carboxaldehyde (208 mg, 1.37 mmol) in CH2Cl2 (5 mL) was added NaBH(OAc)3 (407 mg, 1.92 mmol) and the mixture was stirred at room temperature for 19 h. Purification of the crude material by column chromatography on silica gel (20:1 CH2Cl2: CH3OH) followed by radial chromatography on silica gel (1 mm plate, CH2Cl2/MeOH/NH4OH, 150:1:1) afforded the desired amine as a mixture with the benzenedimethanamine starting material.
To facilitate the purification, a solution of the mixture obtained from the reaction above (205 mg) in THF (10 mL), TEA (7 drops) and distilled water (7 drops) was treated with di-tert-butyl dicarbonate (147 mg, 0.674 mmol). After 1.5 hours the reaction was poured over brine (35 mL), extracted with EtOAc (3×30 mL), dried (Na2SO4), filtered and concentrated in vacuo to give the di-BOC protected crude product. Purification by column chromatography on silica gel (40:1:1 CH2Cl2: CH3OH: NH4OH) followed by radial chromatography on silica gel (1 mm plate, CH2Cl2/MeOH/NH4OH, 75:1:1) afforded the desired protected amine (107 mg, 38%) as a pale yellow oil.
Using General Procedure D: Conversion of the oil from above (56 mg, 0.076 mmol) to the hydrobromide salt followed by re-precipitation of the intermediate solid from methanol/ether gave AMD9658 (56 mg, 87%) as a white solid. 1H NMR (D2O) 1.79–1.96 (m, 1H), 2.15–2.33 (m, 2H), 2.38–2.49 (m, 1H), 2.99–3.06 (m, 2H), 3.77–3.89 (m, 4H), 4.45 (d, 1H, J=16.7 Hz), 4.55 (s, 2H), 4.63 (d, 1H, J=16.6 Hz), 7.10 (d, 2H, J=7.8 Hz), 7.24 (d, 2H, J=8.4 Hz), 7.36 (dd, 2H, J=6.4, 3.4 Hz), 7.54 (dd, 2H, J=6.1, 3.0 Hz), 7.70 (dd, 1H, J=8.4, 4.8 Hz), 7.92 (dd, 1H, J=7.9, 6.2 Hz), 8.39 (d, 1H, J=7.9 Hz), 8.64 (d, 1H, J=8.4 Hz), 8.75 (d, 1H, J=5.6 Hz), 8.85 (d, 1H, J=4.8 Hz). 13C NMR (D2O) 20.44, 20.92, 27.84, 49.29, 50.24, 56.66, 63.20, 113.67 (2 carbons), 125.30, 126.11, 126.55 (2 carbons), 130.34 (2 carbons), 130.49, 130.84 (2 carbons), 134.86, 138.16, 139.67, 141.02, 146.60, 148.29, 150.81, 151.80, 153.84. ES-MS m/z 534 (M+H) Anal Calc. for C31H31N7O2.3.2HBr.3.0H2O: C, 43.98; H, 4.79; N, 11.58; Br, 30.20. Found: C, 44.05; H, 4.80; N, 11.35; Br, 30.15.
EXAMPLE: 82




AMD9538: Preparation of (1H-benzoimidazol-2-ylmethyl)-(4-{[(3-fluoro-pyridin-2-ylmethyl)-amino]-methyl}-benzyl)-(5,6,7,8-tetrahydro-quinolin-8-yl)-amine
Following the General Procedure for reductive amination B, (4-aminomethyl-benzyl)-(1H-benzoimidazol-2-ylmethyl)-(5,6,7,8-tetrahydro-quinolin-8-yl)-amine (190 mg, 0.48 mmol) and 3-fluoro-2-formylpyridine (prepared as described by Marsais, F.; Qeuguiner, G. Tetrahedron, 1983, 39, 2009–2021) (60 mg, 0.48 mmol) were converted into the corresponding reductive amination product using the following quantities of reagents and solvents: sodium triacetoxyborohydride (203 mg, 0.96 mmol), CH2Cl2 (4 mL). The reaction time in this case was 18 h. Purification of the crude material thus obtained by radial chromatography (silica gel, 1 mm plate, 50:2:1 CH2Cl2-MeOH—NH4OH) afforded 185 mg (72%) of AMD9538 as a white foam. 1H NMR (CDCl3) □ 1.43–1.47 (m, 1H), 2.00–2.05 (m, 2H), 2.16–2.28 (m, 2H), 3.71 (s, 2H), 3.76 (s, 2H), 3.94–3.95 (m, 2H), 3.95 (d, 1H, J=16 Hz), 4.08 (dd, 1H, J=9, 6 Hz), 4.16 (d, 1H, J=16 Hz), 7.13–7.29 (m, 8H), 7.34 (s, 1H), 7.36 (s, 1H), 7.41 (dd, 1H, J=8, 1 Hz), 7.50–7.52 (m, 1H), 7.63–7.65 (m, 1H), 8.33 (dt, 1H, J=5, 1 Hz), 8.67 (dd, 1H, J=5, 1 Hz); 13C NMR (CDCl3) □ 21.4, 23.2, 29.2, 47.8, 48.5, 53.1, 53.7, 60.1, 110.9, 118.7, 121.2, 121.7, 122.1, 122.4, 122.7, 123.2, 128.2, 128.6, 137.7, 137.2, 138.0, 138.9, 144.8, 146.9, 156.2, 157.4. ES-MS m/z 507 (M+H). Anal. Calcd. for C31H31N6F.1.4H2O: C, 70.01; H, 6.41; N, 15.80. Found: C, 70.01; H, 6.32; N, 15.57.
EXAMPLE: 83




AMD9539: Preparation of N-(3-fluoro-4-pyridinylmethyl)-N′-(1H-benzimidazol-2-ylmethyl)-N′-(5,6,7,8-tetrahydro-8-quinolinyl)-1,4-benzenedimethanamine
Preparation of 3-fluoro-pyridine-4-carboxaldehyde
To a solution of TMEDA (389 uL, 2.58 mmol) in THF (10 mL) at −78° C. was added a solution of n-butyl lithium in THF (2.5M, 1.03 mL, 2.58 mmol). After 30 minutes at −78° C., 3-fluoropyridine (221 uL, 2.57 mmol) was added. After another 2 hours at −78° C., DMF (219 uL, 2.83 mmol) was added. After a further 2 hours at −78° C., the reaction was quenched with saturated aqueous NaHCO3 (20 mL), extracted with ether (4×15 mL), dried (Na2SO4), filtered and concentrated in vacuo to give the crude oil. Purification by column chromatography on silica gel (Hexanes: EtOAc 4:1) afforded the title compound as a pale yellow oil (120 mg, 37%). 1H NMR (CDCl3) 7.68 (t, 1H, J=5.2 Hz), 8.62 (d, 1H, J=4.7 Hz), 8.70 (s, 1H), 10.42 (s, 1H).
Using General Procedure B: To a stirred solution of N′-(1H-benzimidazol-2-ylmethyl)-N′-(5,6,7,8-tetrahydro-8-quinolinyl)-1,4-benzenedimethanamine (111 mg, 0.28 mmol) and 3-fluoro-pyridine-4-carboxaldehyde (35 mg, 0.28 mmol) in CH2Cl2 (4 mL) was added NaBH(OAc)3 (159 mg, 0.75 mmol) and the mixture was stirred at room temperature for 3 h. Purification of the crude material by radial chromatography on silica gel (1 mm plate, CH2Cl2/MeOH/NH4OH, 75:1:1) afforded the desired amine (56.4 mg, 40%) as a yellow foam. 1H NMR (CDCl3) 1.59–1.71 (m, 1H), 1.94–2.09 (m, 2H), 2.20–2.31 (m, 1H), 2.65–2.91 (m, 2H), 3.69 (s, 2H), 3.71 (s, 2H), 3.80 (s, 2H), 3.95 (d, 1H, J=16.7 Hz), 4.08 (dd, 1H, J=8.9, 6.6 Hz) 4.16 (d, 1H, J=16.7 Hz), 7.14–7.20 (m, 5H), 7.31–7.44 (m, 4H), 7.46–7.66 (m, 2H), 8.33 (d, 1H, J=4.8 Hz), 8.35 (d, 1H, J=1.6 Hz), 8.67 (d, 1H, J=3.2 Hz). 13C NMR (CDCl3) 21.78, 23.66, 29.63, 45.60, 48.94, 53.30, 54.45, 60.73, 121.95, 122.67, 122.79 (J=18.2 Hz), 124.39, 128.47 (2 carbons), 129.18 (2 carbons), 135.21, 137.69 (2 carbons), 137.82, 138.14, 138.69, 138.86, 146.14, 146.21, 147.29 (2 carbons), 156.57, 157.76, 158.50 (J=254.5 Hz). ES-MS m/z 507 (M+H) Anal Calc. for C31H31N6F.1.0H2O.0.4CH2Cl2: C, 67.51; H, 6.10; N, 15.04. Found: C, 67.32; H, 6.21; N, 14.69.
EXAMPLE: 84




AMD9614: Preparation of N-(3-Bromo-pyrid-4-ylmethyl)-N′-(1H-benzimidazol-2-ylmethyl)-N′-(5,6,7,8-tetrahydro-8-quinolinyl)-1,4-benzenedimethanamine (hydrobromide salt)
Preparation of 3-bromo-pyridine-4-carboxaldehyde
To a solution of TMEDA (1.91 mL, 12.7 mmol) and LDA (12.7 mmol) in ether (50 mL) at −78° C. was added 3-bromo-pyridine (1.22 mL, 12.7 mmol). After 60 minutes at −78° C., DMF (1.08 mL, 13.9 mmol) was added, and the mixture allowed to warm to room temperature. After 1 hour at room temperature the reaction was quenched with saturated aqueous NaHCO3 (100 mL), extracted with CH2Cl2 (4×15 mL), dried (MgSO4), filtered and concentrated in vacuo to give the crude oil. Purification by column chromatography on silica gel (Hexanes: EtOAc 4:1) afforded the title compound as a crystalline solid (1.2 g, 51%). 1H NMR (CDCl3) 7.70 (d, 1H, J=4.8 Hz), 8.71 (d, 1H, J=4.8 Hz), 8.91 (s, 1H), 10.36 (s, 1H).
Using General Procedure B: To a stirred solution of N′-(1H-benzimidazol-2-ylmethyl)-N′-(5,6,7,8-tetrahydro-8-quinolinyl)-1,4-benzenedimethanamine (183 mg, 0.46 mmol) and 3-bromo-pyridine-4-carboxaldehyde (82 mg, 0.44 mmol) in CH2Cl2 (5 mL) was added NaBH(OAc)3 (143 mg, 0.68 mmol) and the mixture was stirred at room temperature for 23 h. Purification of the crude material by radial chromatography on silica gel (1 mm plate, CH2Cl2/MeOH/NH4OH, 150:1:1) afforded the desired amine (42 mg, 17%) as a colourless oil.
Using General Procedure D: Conversion of the foam from above (42 mg, 0.074 mmol) to the hydrobromide salt followed by re-precipitation of the intermediate solid from methanol/ether gave AMD9614 (68 mg, 99%) as a white solid. 1H NMR (D2O) 1.80–1.97 (m, 1H), 2.14–2.32 (m, 2H), 2.38–2.49 (m, 1H), 2.99–3.07 (m, 2H), 3.77–3.93 (m, 4H), 3.98 (d, 1H, J=15.0 Hz), 4.04 (d, 1H, J=15.0 Hz), 4.45 (d, 1H, J=16.7 Hz), 4.64 (d, 1H, J=16.7 Hz), 7.09 (d, 2H, J=8.0 Hz), 7.26 (d, 2H, J=8.0), 7.35 (dd, 2H, J=6.2, 3.1 Hz), 7.54 (dd, 2H, J=6.2, 3.0 Hz), 7.62 (d, 1H, J=5.1 Hz), 7.92 (dd, 1H, J=6.7, 6.7 Hz), 8.39 (d, 1H, J=7.9 Hz), 8.63 (d, 1H, J=5.4 Hz), 8.76 (d, 1H, J=5.3 Hz), 8.88 (s, 1H). 13C NMR (D2O) 20.44, 20.97, 27.86, 48.58, 50.17, 50.64, 56.72, 63.29, 113.92 (2 carbons), 123.56, 126.14 (2 carbons), 126.61, 126.78, 129.70, 130.32 (2 carbons), 130.44, 130.97 (2 carbons), 138.35, 139.35, 139.70, 141.06, 144.81, 145.91, 148.33, 149.37, 150.76, 151.86. ES-MS m/z 569 (M+H) Anal Calc. for C31H31N6Br.4.0HBr.2.3H2O: C, 39.92; H, 4.28; N, 9.01; Br, 42.84. Found: C, 39.88; H, 4.18; N, 8.90; Br, 42.94.
EXAMPLE: 85




AMD9597: Preparation of (1H-benzimidazol-2-ylmethyl)-(4-{[(2-fluoro-pyridin-3-ylmethyl)-amino]-methyl}-benzyl)-(5,6,7,8-tetrahydro-quinolin-8-yl)-amine (hydrobromide salt)
Preparation of 2-fluoro-pyridine-3-carbaldehyde




A solution of 2-fluoropyridine (306 mg, 3.15 mmol) in THF (1 mL) was added to a solution of lithium diisopropylamide in THF (0.20 M, 17 mL, 3.4 mmol) at −78° C. The solution was stirred at −78° C. for 4 h, then DMF (0.73 mL, 9.4 mmol) was added dropwise and stirring was continued at −78° C. for 2.5 h. Saturated NH4Cl(aq) (2 mL) was added, and the mixture was allowed to warm to room temperature. The mixture was diluted with EtOAc (20 mL), and the organic phase was washed with saturated NaHCO3(aq) (20 mL) and brine (10 mL), then dried (MgSO4) and concentrated in vacuo. Purification of the crude material by chromatography on silica gel (10% EtOAc/hexanes) gave the title compound as a yellow liquid (58 mg, 15%). 1H NMR (CDCl3) □ 7.39 (m, 1H), 8.32 (m, 1H), 8.48 (m, 1H), 10.33 (s, 1H).
Using General Procedure B: To a stirred solution of N′-(1H-benzimidazol-2-ylmethyl)-N′-(5,6,7,8-tetrahydro-8-quinolinyl)-1,4-benzenedimethanamine (178 mg, 0.448 mmol), 2-fluoro-pyridine-3-carbaldehyde (56 mg, 0.448 mmol), and AcOH (0.026 mL, 0.45 mmol) in THF (4.5 mL) was added NaBH(OAc)3 (285 mg, 1.34 mmol) and the mixture was stirred at room temperature for 1.5 h. Purification of the crude material by column chromatography on silica gel (400:5:1 CH2Cl2/MeOH/NH4OH) afforded a colourless oil (117 mg).
Using General Procedure D: Conversion of the oil from above (113 mg, 0.223 mmol) to the hydrobromide salt followed by re-precipitation of the intermediate solid from methanol/ether gave AMD9597 (145 mg, 39%) as a colourless solid. 1H NMR (D2O) □ 1.89 (m, 1H), 2.24 (m, 2H), 2.44 (m, 1H), 3.02 (m, 2H), 3.71–3.90 (m, 6H), 4.45 (d, 1H, J=17 Hz), 4.64 (d, 1H, J=17 Hz), 4.79 (m, 1H), 7.03 (d, 2H, J=8.1 Hz), 7.24 (d, 2H, J=7.8 Hz), 7.31 (m, 2H), 7.39 (m, 1H), 7.51 (m, 2H), 7.91 (m, 2H), 8.24 (dd, 1H, J=5.0, 1.4 Hz), 8.39 (d, 1H, J=7.8 Hz), 8.76 (d, 1H, J=4.8 Hz); 13C NMR (D2O) □ 20.45, 20.99, 27.87, 43.58, 50.03, 50.26, 56.70, 63.33, 113.91, 123.19, 126.15, 126.55, 130.01, 130.12, 130.43, 130.93, 138.07, 139.71, 141.06, 144.80, 144.85, 148.33, 149.15, 149.32, 150.77, 151.91. ES-MS m/z 507 (M+H). Anal. Calcd. for C31H31N6F.3.6HBr.3.9H2O: C, 42.89; H, 4.92; N, 9.68; Br, 33.13. Found: C, 42.94; H, 4.96; N, 9.54; Br, 33.08.
EXAMPLE: 86




AMD9598: Preparation of (1H-benzimidazol-2-ylmethyl)-(4-{[(2-methylsulfanyl-pyridin-3-ylmethyl)-amino]-methyl}-benzyl)-(5,6,7,8-tetrahydro-quinolin-8-yl)-amine (hydrobromide salt)
Preparation of (2-methylsulfanyl-pyridin-3-yl)-methanol




To 2-(methylthio)picolinic acid (1.00 g, 5.91 mmol) was added BH3.THF (1.0 M/THF, 15 mL, 15 mmol) and the mixture heated at 80° C. for 24 h. Methanol (30 mL) was carefully added at room temperature and the solution was concentrated in vacuo. Purification of the crude material on silica gel (20% EtOAc/hexanes) gave the title compound as colourless crystals (278 mg, 30%). 1H NMR (CDCl3) □ 1.99 (t, 1H, J=6.0 Hz), 2.61 (s, 3H), 4.70 (d, 2H, J=6.0 Hz), 7.04 (dd, 1H, J=6, 3 Hz), 7.62 (d, 1H, J=6 Hz), 8.40 (d, 1H, J=3 Hz).
2-Methylsulfanyl-pyridine-3-carbaldehyde:




To a solution of (2-methylsulfanyl-pyridin-3-yl)-methanol (278 mg, 1.79 mmol) in CH2Cl2 (10 mL) was added activated MnO2 (85%, 1.83 g, 17.9 mmol) and the suspension stirred at room temperature for 18 h. The mixture was filtered through Celite, and the solvent was removed from the filtrate under reduced pressure. Purification of the crude product by chromatography on silica gel (10% EtOAc/hexanes) gave the titlw compound as colourless crystals (202 mg, 74%). 1H NMR (CDCl3) □ 2.61 (s, 3H), 7.17 (dd, 1H, J=9, 6 Hz), 8.00 (dd, 1H, J=9, 3 Hz), 8.62 (dd, 1H, J=6, 3 Hz), 10.24 (s, 1H).
Using General Procedure B: To a stirred solution of N′-(1H-benzimidazol-2-ylmethyl)-N′-(5,6,7,8-tetrahydro-8-quinolinyl)-1,4-benzenedimethanamine (200 mg, 0.503 mmol), 2-methylsulfanyl-pyridine-3-carbaldehyde (77 mg, 0.503 mmol) and AcOH (0.03 mL, 0.52 mmol) in THF (5 mL) was added NaBH(OAc)3 (320 mg, 1.51 mmol) and the mixture was stirred at room temperature for 1.5 h. Purification of the crude material by column chromatography on silica gel (400:5:1 CH2Cl2/MeOH/NH4OH) afforded a colourless foam (94 mg).
Using General Procedure D: Conversion of the foam from above (75 mg, 0.14 mmol) to the hydrobromide salt followed by re-precipitation of the intermediate solid from methanol/ether gave AMD9598 (89 mg, 23%) as a colourless solid. 1H NMR (D2O) □ 1.89 (m, 1H), 2.26 (m, 2H), 2.45 (m, 1H), 2.72 (s, 3H), 3.04 (m, 2H), 3.78–3.97 (m, 6H), 4.46 (d, 1H, J=17 Hz), 4.65 (d, 1H, J=17 Hz), 4.79 (m, 1H), 7.09 (d, 2H, J=8.1 Hz), 7.27 (d, 2H, J=7.8 Hz), 7.35 (m, 2H), 7.54 (m, 3H), 7.92 (dd, 1H, J=8.1, 6.0 Hz), 8.01 (dd, 1H, J=7.8, 1.2 Hz), 8.39 (d, 1H, J=7.5 Hz), 8.52 (dd, 1H, J=1.2 Hz), 8.77 (d, 1H, J=5.1 Hz); 13C NMR (D2O) □ 14.40, 20.46, 21.01, 27.88, 45.97, 50.21, 50.47, 56.75, 63.30, 113.94, 122.23, 126.16, 126.60, 127.98, 129.82, 130.20, 130.44, 130.98, 138.26, 139.74, 141.07, 143.86, 146.19, 148.35, 150.75, 151.85, 158.77. ES-MS m/z 535 (M+H). Anal. Calcd. for C32H34N6S.4.2HBr.4.4H2O: C, 40.30; H, 4.97; N, 8.81; S, 3.36; Br, 35.18. Found: C, 40.40; H, 4.79; N, 8.71; S, 3.24; Br, 35.01.
EXAMPLE: 87




AMD9625: Preparation of (1H-benzimidazol-2-ylmethyl)-(4-{[(pyrazin-2-ylmethyl)-amino]-methyl}-benzyl)-(5,6,7,8-tetrahydro-quinolin-8-yl)-amine (hydrobromide salt)
Preparation of pyrazine-2-carboxylic acid methyl ester




A solution of 2-pyrazinecarboxylic acid (2.00 g, 16.1 mmol) and H2SO4 (catalytic) in MeOH (50 mL) was heated at reflux for 45 minutes, then concentrated in vacuo. The residue was partitioned between EtOAc (40 mL) and saturated NaHCO3(aq) (20 mL). The organic phase was washed with saturated NaHCO3(aq) (20 mL) and brine (10 mL), then dried (MgSO4) and concentrated in vacuo to give colourless crystals (1.32 g, 59%). 1H NMR (CDCl3) □ 4.04 (s, 3H), 8.72 (dd, 11H, J=2.4, 1.2 Hz), 8.77 (d, 1H, J=2.4 Hz), 9.32 (d, 1H, J=1.2 Hz).
Preparation of pyrazine-2-carbaldehyde




To a solution of pyrazine-2-carboxylic acid methyl ester (1.00 g, 7.24 mmol) in THF (20 mL) at −78° C. was added LiAlH4 (1.0 M/THF, 3.62 mL, 3.62 mmol) over 40 minutes, and the solution was stirred at −78° C. for 20 min. Acetic acid (1.0 mL, 17 mmol) was added dropwise, and the solution was allowed to warm to room temperature then concentrated in vacuo. The residue was partitioned between 2.5 N HCl(aq) (7 mL) and CHCl3 (10 mL). The aqueous phase was diluted with H2O (5 mL) and extracted with CHCl3 (6×7 mL). The combined extracts were washed with saturated NaHCO3(aq), then dried (MgSO4) and concentrated in vacuo to give an orange oil (740 mg, 95%). 1H NMR (CDCl3) □ 8.77 (m, 1H), 8.82 (d, 1H, J=3 Hz), 9.19 (d, 1H, J=3 Hz), 10.16 (s, 1H).
Using General Procedure B: To a stirred solution of N′-(1H-benzimidazol-2-ylmethyl)-N′-(5,6,7,8-tetrahydro-8-quinolinyl)-1,4-benzenedimethanamine (302 mg, 0.760 mmol) and pyrazine-2-carbaldehyde (100 mg, 0.925 mmol) in THF (8 mL) was added Na3H(OAc)3 (258 mg, 1.22 mmol) and the mixture was stirred at room temperature for 15 h. Purification of the crude material by column chromatography on silica gel (300:5:1 CH2Cl2/MeOH/NH4OH) afforded a colourless oil (81 mg).
Using General Procedure D: Conversion of the oil from above (76 mg, 0.16 mmol) to the hydrobromide salt followed by re-precipitation of the intermediate solid from methanol/ether gave AMD9625 (108 mg, 17%) as a colourless solid. 1H NMR (D2O) □ 1.88 (m, 1H), 2.24 (m, 2H), 2.42 (m, 1H), 3.01 (m, 2H), 3.75–3.87 (m, 4H), 4.09 (s, 2H), 4.44 (d, 1H, J=17 Hz), 4.63 (d, 1H, J=17 Hz), 4.79 (m, 1H), 7.03 (d, 2H, J=8.1 Hz), 7.21 (d, 2H, J=7.8 Hz), 7.34 (m, 2H), 7.52 (m, 2H), 7.91 (dd, 1H, J=7.8, 6.0 Hz), 8.38 (d, 1H, J=8.1 Hz), 8.49 (s, 1H), 8.57 (d, 1H, J=2.7 Hz), 8.67 (m, 1H), 8.75 (d, 1H, J=5.7 Hz); 13C NMR (D2O) □ 19.53, 20.03, 26.94, 47.04, 49.23, 49.32, 55.76, 62.32, 112.97, 125.21, 125.68, 129.20, 129.34, 129.50, 129.94, 137.20, 138.78, 140.10, 143.07, 143.66, 144.49, 146.71, 147.38, 149.84, 150.87. ES-MS m/z 490 (M+H). Anal. Calcd. for C30H31N7.4.0HBr.3.7H2O: C, 40.95; H, 4.86; N, 11.14; Br, 36.32. Found: C, 40.97; H, 4.88; N, 10.84; Br, 36.48.
EXAMPLE: 88




AMD11087: Preparation of (1H-benzoimidazol-2-ylmethyl)-(4-{[(1H-pyrazol-3-ylmethyl)-amino]-methyl}-benzyl)-(5,6,7,8-tetrahydro-quinolin-8-yl)-amine (hydrobromide salt)
Using General Procedure B: A solution of pyrazol-3-carboxaldehyde (26.6 mg, 0.28 mmol) and (4-aminomethyl-benzyl)-(1H-benzoimidazol-2-ylmethyl)-(5,6,7,8-tetrahydro-quinolin-8-yl)-amine (110 mg, 0.28 mmol) in MeOH (2.0 mL) was stirred overnight at room temperature. NaBH4 (21.2 mg, 0.56 mmol) was added and the resultant mixture stirred for an additional 15 minutes. Purification by column chromatography on silica gel (CH2Cl2/MeOH/NH4OH, 100:1:1) afforded the desired amine (80 mg, 60%) as a white foam.
Using General Procedure D: Conversion of the foam from above to the hydrobromide salt afforded AMD11087 as a white solid. 1H NMR (D2O) δ 1.90–1.96 (m, 1H), 2.20–2.32 (m, 2H), 2.42–2.46 (m, 1H), 3.03 (br s, 2H), 3.62–3.71 (m, 2H), 3.78 (d, 1H, J=12.6 Hz), 3.86 (d, 1H, J=12.9 Hz), 3.91 (s, 2H), 4.45 (d, 1H, J=16.5 Hz), 4.64 (d, 1H, J=16.8 Hz), 4.79 (m, 1H, overlap with HOD), 6.42 (d, 1H, J=2.4 Hz), 6.99 (d, 2H, J=8.1 Hz), 7.22 (d, 2H, J=8.1 Hz), 7.33–7.36 (m, 2H), 7.51–7.54 (m, 2H), 7.77 (d, 1H, J=2.4 Hz), 7.92 (dd, 1H, J=7.8, 6.3 Hz), 8.39 (d, 1H, J=7.8 Hz), 8.77 (d, 1H, J=5.4 Hz); 13C NMR (D2O) δ 20.46, 20.99, 27.87, 43.14, 49.46, 50.29, 56.72, 63.33, 106.44, 113.88, 126.15, 126.63, 130.00, 130.41, 130.44, 130.86, 132.08, 137.95, 139.71, 141.04, 142.06, 148.32, 150.77, 151.82. ES-MS m/z 478.3 (M+H). Anal. Calcd. for C29H31N7.4.0HBr.2.3H2O0.4C4H10O: C, 42.13; H, 5.04; N, 11.24; Br, 36.64. Found: C, 42.19; H, 4.87; N, 11.23; Br, 36.56.
EXAMPLE: 89




AMD11095: Preparation of (1H-benzoimidazol-2-ylmethyl)-(4-{[(2-methyl-1H-imidazol-4-ylmethyl)-amino]-methyl}-benzyl)-(5,6,7,8-tetrahydro-quinolin-8-yl)-amine (hydrobromide salt)
Using General Procedure B: A solution of 2-methyl-1H-imidazole-4-carbaldehyde (27.7 mg, 0.25 mmol) and (4-aminomethyl-benzyl)-(1H-benzoimidazol-2-ylmethyl)-(5,6,7,8-tetrahydro-quinolin-8-yl)-amine (100 mg, 0.25 mmol) in MeOH (2.0 mL) was stirred overnight at room temperature. NaBH4 (18.9 mg, 0.50 mmol) was added and the resultant mixture stirred for an additional 15 minutes. Purification of the crude yellow foam by column chromatography on silica gel (CH2Cl2/MeOH/NH4OH, 200:3:3) afforded the desired amine (65 mg, 53%) as a white foam.
Using General Procedure D: Conversion of the foam from above to the hydrobromide salt afforded AMD11095 as a white solid. 1H NMR (D2O) δ 1.92–1.95 (m, 1H), 2.23–2.34 (m, 2H), 2.45–2.49 (m, 1H), 2.62 (s, 3H), 3.04–3.06 (m, 2H), 3.73–3.92 (m, 4H), 4.12 (s, 2H), 4.48 (d, 1H, J=16.5 Hz), 4.66 (d, 1H, J=16.8 Hz), 4.80 (m, 1H, overlap with HOD), 7.06 (d, 2H, J=8.1 Hz), 7.27 (d, 2H, J=8.1 Hz), 7.44–7.50 (m, 3H), 7.57–7.61 (m, 2H), 7.95 (dd, 1H, J=7.8, 6.0 Hz), 8.42 (d, 1H, J=7.8 Hz), 8.79 (d, 1H, J=5.7 Hz); 13C NMR (D2O) δ 11.27, 20.46, 20.95, 27.86, 39.87, 49.96, 50.18, 56.68, 63.16, 113.98, 120.81, 122.40, 126.13, 126.61, 130.02, 130.10, 130.51, 130.91, 138.21, 139.71, 141.02, 146.73, 148.30, 150.78, 151.77. ES-MS m/z 492.3 (M+H). Anal. Calcd. for C30H33N7.4.0HBr.2.8H2O.0.3C4H10O: C, 42.20; H, 5.18; N, 11.04; Br, 35.99. Found: C, 42.14; H, 5.07; N, 11.01; Br, 36.14.
EXAMPLE: 90




AMD 11096: Preparation of (1H-benzoimidazol-2-ylmethyl)-(4-{[(1-methyl-1H-imidazol-2-ylmethyl)-amino]-methyl}-benzyl)-(5,6,7,8-tetrahydro-quinolin-8-yl)-amine (hydrobromide salt)
Using General Procedure B: A solution of 1-methyl-2-imidazole carboxaldehyde (27.5 mg, 0.25 mmol) and (4-aminomethyl-benzyl)-(1H-benzoimidazol-2-ylmethyl)-(5,6,7,8-tetrahydro-quinolin-8-yl)-amine (100 mg, 0.25 mmol) in MeOH (2.0 mL) was stirred overnight at room temperature. NaBH4 (37.5, 0.75 mmol) was added and the resultant mixture stirred for an additional 15 minutes. Purification of the crude white foam by column chromatography on silica gel (CH2Cl2[MeOH/NH4OH, 50:1:1) followed by radial chromatography on silica gel (CH2Cl2/MeOH/NH4OH, 200:3:2) afforded the desired amine (83 mg, 67%) as a white foam.
Using General Procedure D: Conversion of the foam from above to the hydrobromide salt afforded AMD11096 as a white solid. 1H NMR (D2O) δ 1.85–1.98 (m, 1H), 2.22–2.33 (m, 2H), 2.44–2.48 (m, 1H), 3.04–3.06 (m, 2H), 3.81–3.92 (m, 7H), 4.47 (d, 1H, J=16.5 Hz), 4.50 (s, 2H), 4.66 (d, 1H, J=16.5 Hz), 4.80 (m, 1H, overlap with HOD), 7.08 (d, 2H, J=7.8 Hz), 7.27 (d, 2H, J=7.8 Hz), 7.47–7.52 (m, 4H), 7.58–7.62 (m, 2H), 7.94 (dd, 1H, J=7.8, 6.0 Hz), 8.41 (d, 1H, J=7.8 Hz), 8.78 (d, 1H, J=5.4 Hz); 13C NMR (D2O) δ 20.45, 20.93, 27.85, 35.42, 38.33, 50.10, 50.93, 56.66, 63.10, 113.98, 121.09, 125.76, 126.13, 126.66, 129.78, 130.14, 130.52, 130.98, 136.55, 138.43, 139.70, 141.02, 148.30, 150.77, 151.67. ES-MS m/z 492.3 (M+H). Anal. Calcd. for C30H33N7.3.9HBr.1.7H2O: C, 43.01; H, 4.85; N, 11.70; Br, 37.19. Found: C, 42.85; H, 4.77; N, 11.51; Br, 37.45.
EXAMPLE: 91




AMD9566: Preparation of 3-[(4–1[(1H-benzimidazol-2-ylmethyl)-(5,6,7,8-tetrahydro-quinolin-8-yl)-amino]-methyl]-benzylamino)-methyl]-1H-pyridin-2-one (hydrobromide salt)
Preparation of 3-hydroxymethyl-pyridin-2-ol
To a suspension of 2-Hydroxynicotinic acid (1.01 g, 7.26 mmol) in THF (2 mL) was added BH3.THF (1.0 m in THF, 18 mL, 18 mmol) and the mixture was heated to 80° C. for 18 hours. MeOH (2 mL) was added and the mixture was heated to 80° C. for an additional 2 hours before being cooled to room temperature and concentrated under reduced pressure. The resultant crude syrup was repeatedly dissolved in MeOH (5 mL) and concentrated (3×). Purification by column chromatography on silica gel (20:1—CH2Cl2: MeOH) afforded the desired alcohol (260 mg, 29%) as a white solid. 1H NMR (CD3OD) δ 4.50 (s, 2H), 6.43 (t, 1H, J=6.6 Hz), 7.34 (d, 1H, J=4.5 Hz), 7.65 (d, 1H, J=6.3 Hz).
Preparation of 2-hydroxy-pyridine-3-carbaldehyde
To a solution of the diol (260 mg, 2.05 mmol) from above in CH2Cl2 (10 mL) and MeOH (0.5 mL) was added MnO2 (85%, 2.23 g, 21.8 mmol) and the resulting suspension was stirred at 40° C. overnight. The reaction mixture was diluted with CH2Cl2/MeOH (2:1) filtered through Celite and the cake was washed with CH2Cl2. The filtrate was concentrated under reduced pressure and purification by column chromatography on silica gel (50:1—CH2Cl2: MeOH) afforded the desired aldehyde (66 mg, 41%) as a light yellow solid. 1H NMR (CDCl3) δ 6.52 (t, 1H, J=6.0 Hz), 7.77 (dd, 1H, J=6.0, 3.0 Hz), 8.15 (dd, 1H, J=6.0, 3.0 Hz), 10.16 (s, 1H).
Using General Procedure B: To a stirred solution of 2-hydroxy-pyridine-3-carbaldehyde (65 mg, 0.53 mmol), N′-(1H-benzimidazol-2-ylmethyl)-N′-(5,6,7,8-tetrahydro-8-quinolinyl)-1,4-benzenedimethanamine (211 mg, 0.53 mmol) and AcOH (30 uL, 0.53 mmol) in THF (5 mL) was added NaBH(OAc)3 (337 mg, 1.59 mmol) and the mixture was stirred at room temperature overnight. Purification of the crude yellow foam (320 mg) by column chromatography on silica gel (90:5:1—CH2Cl2:MeOH:NH4OH) followed by radial chromatography on silica gel (98:1:1—CH2Cl2:MeOH:NH4OH followed by 48:1:1—CH2Cl2:MeOH:NH4OH) afforded the desired product (139 mg, 52%) as a colorless syrup.
Using General Procedure D: Conversion of the syrup from above to the hydrobromide salt afforded AMD9566 as a white solid. 1H NMR (CD3OD) δ 1.82–1.99 (m, 1H), 2.19–2.34 (m, 2H), 2.40–2.50 (m, 1H), 3.03–3.07 (m, 2H), 3.79 (s, 2H), 3.83–3.94 (m, 4H), 4.42 (d, H, J=16.2 Hz), 4.61 (d, 1H, J=16.5 Hz), 4.67–4.74 (m, 1H), 6.43 (t, 1H, J=6.6 Hz), 7.26 (d, 2H, J=8.1 Hz), 7.49–7.56 (m, 3H), 7.59–7.66 (m, 3H), 7.71–7.75 (m, 2H), 7.92–7.97 (m, 1H), 8.37–8.40 (m, 1H), 8.69–8.99 (m, 1H); 13C NMR (CD3OD) δ 21.91 (2 carbons), 29.25, 48.13, 50.59, 51.30, 57.74, 62.75, 108.42, 115.32, 123.13, 127.30, 127.95, 131.40, 132.23, 132.38, 132.61, 138.08, 139.11, 141.73, 142.16, 145.22, 149.42, 152.07, 152.91, 164.77. ES-MS m/z 505.3 (M+H). Anal. Calcd. for C31H32N6O.3.0HBr.4.4H2O: C, 45.93; H, 5.45; N, 10.37; Br, 29.57. Found: C, 46.06; H, 5.22; N, 10.19; Br, 29.46.
EXAMPLE: 92




AMD9567: Preparation of (1H-benzimidazol-2-ylmethyl)-(4-{[(2-methyl-pyridin-3-ylmethyl)-amino]-methyl}-benzyl)-(5,6,7,8-tetrahydro-quinolin-8-yl)-amine (hydrobromide salt)
Preparation of (2-methyl-pyridin-3-yl)-methanol
To 2-Methylnicotinic acid (1.00 g, 7.29 mmol) was added BH3.THF (1.0 m in THF, 18 mL, 18 mmol) and the resultant mixture was heated to 80° C. for 20 hours. MeOH (6 mL) was added and the mixture was heated to 80° C. for an additional 2 hours before being cooled to room temperature and concentrated under reduced pressure. The resultant crude syrup was repeatedly dissolved in MeOH (5 mL) and concentrated (3×). Purification by column chromatography on silica gel (4:1—EtOAc:Hexanes) afforded the desired alcohol (700 mg, 80%) as a white solid. 1H NMR (CDCl3) δ 1.96 (t, 1H, J=5.4 Hz), 2.73 (s, 3H), 4.81 (d, 2H, J=5.4 Hz), 7.32 (dd, 1H, J=7.8, 6.3 Hz), 8.03 (d, 1H, J=7.8 Hz), 8.73 (d, 1H, J=5.7 Hz).
To a solution of the alcohol (270 mg, 2.19 mmol) from above in CH2Cl2 (10 mL) was added MnO2 (85%, 2.24 g, 21.9 mmol) and the resulting suspension was stirred at 40° C. overnight. The reaction mixture was diluted with CH2Cl2, filtered through Celite and the cake was washed with CH2Cl2. The filtrate was concentrated under reduced pressure to afford the desired aldehyde (66 mg, 41%) as a yellow syrup which was used without further purification in the next reaction.
Using General Procedure B: To a stirred solution of 2-methyl-pyridine-3-carbaldehyde (75 mg, 0.62 mmol), N′-(1H-benzimidazol-2-ylmethyl)-N′-(5,6,7,8-tetrahydro-8-quinolinyl)-1,4-benzenedimethanamine (246 mg, 0.62 mmol) and AcOH (40 uL, 0.62 mmol) in THF (6.2 mL) was added NaBH(OAc)3 (394 mg, 1.86 mmol) and the mixture was stirred at room temperature overnight. Purification of the crude white foam (280 mg) by column chromatography on silica gel (200:3:1—CH2Cl2:MeOH:NH4OH) afforded the desired product (116 mg, 37%) as a colorless syrup.
Using General Procedure D: Conversion of the syrup from above to the hydrobromide salt afforded AMD9567 as a white solid. 1H NMR (D2O) δ 1.93–2.00 (m, 1H), 2.18–2.32 (m, 1H), 2.35–2.52 (m, 1H), 2.82 (s, 3H), 3.01–3.10 (m, 2H), 3.87 (d, 1H, J=12.9 Hz), 3.94 (d, 1H, J=13.2 Hz), 4.18 (s, 2H), 4.42–4.70 (m, 3H), 4.63 (d, 1H, J=16.2 Hz), 4.71 (m, 1H), 7.42 (d, 2H, J=8.1 Hz), 7.54 (dd, 2H, J=6.3, 3.0 Hz), 7.64 (d, 2H, J=7.8 Hz), 7.77 (dd, 2H, J=6.0, 3.0 Hz), 7.89–7.95 (m, 2H), 8.37 (d, 1H, J=7.8 Hz), 8.65 (d, 1H, J=8.1 Hz), 8.73 (dd, 1H, J=5.7, 1.2 Hz), 8.97 (d, 1H, J=4.8 Hz); 13C NMR (CD3OD) δ 19.65, 21.98, 22.19, 29.31, 47.33, 50.27 (overlap with CD3OD), 52.51, 57.46, 62.49, 115.38, 126.34, 127.11, 127.92, 131.98, 132.12, 132.18, 132.48 (2 carbons), 139.62, 141.83, 142.16, 144.15, 148.57, 148.73, 152.56, 153.08, 156.44. ES-MS m/z 503.3 (M+H). Anal. Calcd. for C32H34N6.3.8HBr.5.2H2O: C, 42.53; H, 5.38; N, 9.30; Br, 33.60. Found: C, 42.43; H, 5.30; N, 8.94; Br, 33.88.
EXAMPLE: 93




AMD9666: Preparation of (1H-benzimidazol-2-ylmethyl)-(4-{[(2-chloro-pyridin-3-ylmethyl)-amino]-methyl}-benzyl)-(5,6,7,8-tetrahydro-quinolin-8-yl)-amine (hydrobromide salt)
To a suspension of 2-Chloronicotinic acid (500 mg, 3.17 mmol) in THF (10 mL) was added BH3.THF (1.0 m in THF, 25 mL, 25 mmol) and the mixture was heated to 65° C. for 18 hours. The mixture was allowed to cool to room temperature, MeOH ( ̃4 mL) was added slowly and the solution concentrated under reduced pressure. The resultant crude mixture was partially dissolved in 6N HCl and heated to 80° C. for 4 hours before being cooled to room temperature. H2O (10 mL) was added and the aqueous layer washed with Et2O (4×20 mL). The aqueous layer was neutralized to basic pH (pH>10) using NaOH (s) followed by 1N NaOH, saturated with NaHCO3 (s) and washed with CH2Cl2 (4×50 mL). The combined organic extracts were dried (MgSO4) and concentrated under reduced pressure to afford the desired alcohol (350 mg, 77%) as a white solid which was used without further purification in the next reaction.
To a solution of the alcohol (340 mg, 2.37 mmol) from above in CH2Cl2 (12 mL) was added MnO2 (85%, 2.42 g, 23.7 mmol) and the resulting suspension was stirred at 40° C. overnight. The reaction mixture was diluted with CH2Cl2, filtered through Celite and the cake was washed with CH2Cl2. The filtrate was concentrated under reduced pressure to afford the desired aldehyde (207 mg, 60%) as a white solid which was used without further purification in the next reaction.
Using General Procedure B: To a stirred solution of the aldehyde from above (50 mg, 0.35 mmol) and N′-(1H-benzimidazol-2-ylmethyl)-N′-(5,6,7,8-tetrahydro-8-quinolinyl)-1,4-benzenedimethanamine (140 mg, 0.35 mmol) in THF (3.5 mL) was added NaBH(OAc)3 (223 mg, 1.05 mmol) and the mixture was stirred at room temperature overnight. Purification of the crude white foam (280 mg) by column chromatography on silica gel (125:1:1—CH2Cl2:MeOH:NH4OH) afforded the desired product (140 mg, 76%) as a colorless syrup.
Using General Procedure D: Conversion of the syrup from above to the hydrochloride salt afforded AMD9666 as a light green solid. 1H NMR (CD3OD) δ 1.81–1.97 (m, 1H), 2.18–2.32 (m, 2H), 2.42–2.53 (m, 1H), 3.00–3.06 (m, 2H), 3.85 (d, 1H, J=12.9 Hz), 3.93 (d, 1H, J=12.9 Hz), 4.06 (s, 2H), 4.15 (s, 2H), 4.41 (d, 1H, J=16.5 Hz), 4.59 (d, 1H, J=16.5 Hz), 4.64–4.67 (m, 1H), 7.32 (d, 2H, J=8.1 Hz), 7.45–7.53 (m, 3H), 7.68–7.77 (m, 4H), 7.94–8.01 (m, 2H), 8.37–8.44 (m, 2H), 8.94 (d, 1H, J=5.1 Hz); 13C NMR (CD3OD) δ 21.86, 21.91, 29.26, 48.56–50.27 (2 carbons overlap with CD3OD), 52.10, 57.63, 62.45, 115.32, 125.18, 127.34, 127.87, 128.12, 128.83, 131.71, 132.01, 132.38, 132.60, 139.42, 141.72, 142.12, 143.08, 194.25, 152.16, 152.28, 152.86, 152.99. ES-MS m/z 523.4 (M+H). Anal. Calcd. for C31H31N6Cl.3.0HCl.3.7H2O.0.5C4H10O: C, 53.84; H, 6.35; N, 11.42; Cl, 19.26. Found: C, 54.00; H, 6.16; N, 11.33; Cl, 19.03.
EXAMPLE: 94




AMD9644: Preparation of (1H-benzimidazol-2-ylmethyl)-(4-{[1-(2-methoxy-phenyl)-ethylamino]-methyl}-benzyl)-(5,6,7,8-tetrahydro-quinolin-8-yl)-amine (hydrobromide salt)
Using General Procedure B: To a stirred solution of 1-(2-methoxy-phenyl)-ethanone (69 uL, 0.50 mmol), N′-(1H-benzimidazol-2-ylmethyl)-N′-(5,6,7,8-tetrahydro-8-quinolinyl)-1,4-benzenedimethanamine (200 mg, 0.50 mmol) and AcOH (0.10 mL, 1.4 mmol) in THF (5 mL) was added NaBH(OAc)3 and the mixture was stirred at room temperature for 48 hours. Purification of the crude light yellow foam (267 mg) by column chromatography on silica gel (100:1:1—CH2Cl2:MeOH:NH4OH) followed by radial chromatography on silica gel (100:1:1—CH2Cl2:MeOH:NH4OH) afforded the desired product (83 mg, 27%) as a white foam.
Using General Procedure D: Conversion of the foam from above to the hydrobromide salt afforded AMD9644 as a white solid. 1H NMR (CD3OD) δ 1.56 (d, 3H, J=6.9 Hz), 1.85–1.97 (m, 1H), 2.20–2.35 (m, 2H), 2.40–2.52 (m, 1H), 3.03–3.12 (m, 2H), 3.56–3.62 (m, 1H), 3.59 (dd, 1H, J=13.2, 7.2 Hz), 3.75 (dd, 1H, J=13.5, 1.8 Hz), 3.83–3.95 (m, 5H), 4.28–4.34 (m, 1H), 4.45 (dd, 1H, J=16.2, 3.9 Hz), 4.61 (d, 1H, J=16.2 Hz), 4.69–4.74 (m, 1H), 7.02–7.15 (m, 4H), 7.27 (ddd, 1H, J=5.7, 4.2, 1.5 Hz), 7.41–7.47 (m, 3H), 7.63 (d, 2H, J=8.1 Hz), 7.72 (dd, 2H, J=6.0, 3.0 Hz), 7.97 (dd, 1H, J=7.8, 5.7 Hz), 8.42 (d, 1H, J=7.8 Hz), 9.01 (d, 1H, J=5.7 Hz); 13C NMR (CD3OD) δ 18.33, 21.93 (2 carbons), 29.25, 50.44, 55.54, 55.60, 56.63, 57.75, 62.69, 113.04, 115.25, 122.88, 124.86, 127.29, 127.88, 130.34, 131.43, 132.21, 132.42, 132.54, 132.64, 139.03, 141.75, 142.18, 149.43, 152.05, 152.90, 158.74. ES-MS m/z 532.4 (M+H). Anal. Calcd. for C34H37N5O.2.9HBr.2.7H2O: C, 50.11; H, 5.60; N, 8.59; Br, 28.43; O, 7.26. Found: C, 50.28; H, 5.63; N, 8.36; Br, 28.44; O, 7.35.
EXAMPLE: 95




AMD9673: Preparation of (1H-benzimidazol-2-ylmethyl)-(4-{[(1H-indol-3-ylmethyl)-amino]-methyl}-benzyl)-(5,6,7,8-tetrahydro-quinolin-8-yl)-amine
Using General Procedure B: 1H-Indole-3-carbaldehyde (73 mg, 0.50 mmol) and N′-(1H-benzimidazol-2-ylmethyl)-N′-(5,6,7,8-tetrahydro-8-quinolinyl)-1,4-benzenedimethanamine (200 mg, 0.50 mmol) were stirred at 40° C. in MeOH (5 mL) for 4 hours. NaBH4 (38 mg, 1.0 mmol) was added and the resultant mixture stirred at room temperature for an additional 15 minutes. Purification of the crude white foam by column chromatography on silica gel (200:1:1—EtOAc:MeOH:NH4OH) afforded AMD9673 (80 mg, 31%) as a white foam. 1H NMR (CDCl3) δ 1.59–1.75 (m, 1H), 1.81–2.09 (m, 2H), 2.16–2.30 (m, 1H), 2.64–2.76 (m, 1H), 2.76–2.91 (m, 1H), 3.69 (s, 2H), 3.78 (s, 2H), 3.92–3.98 (m, 3H), 4.04–4.09 (m, 1H), 4.15 (d, 1H, J=16.5 Hz), 7.02–7.07 (m, 2H), 7.11–7.21 (m, 6H), 7.25–7.34 (m, 3H), 7.41 (d, 1H, J=7.2 Hz), 7.54–7.57 (m, 3H), 8.68 (d, 1H, J=3.9 Hz), 8.75 (br s, 1H); 13C NMR (CDCl3) δ 21.74, 23.88, 29.60, 44.05, 48.89, 52.95, 54.06, 60.72, 111.68, 113.70, 119.08, 119.77, 121.97, 122.30, 122.66, 123.71, 127.40, 128.84, 129.07, 135.15, 136.70, 137.66, 138.60 (2 carbons), 147.27, 156.70, 157.79. ES-MS m/z 532.4 (M-C9H8N). Anal. Calcd. for C34H34N6.0.7H2O.0.2CH2Cl2: C, 73.84; H, 6.49; N, 15.11. Found: C, 73.95; H, 6.60; N, 14.81.
EXAMPLE: 96




AMD9692: Preparation of (1H-Benzimidazol-2-ylmethyl)-(4-{[(1H-indol-2-ylmethyl)-amino]-methyl}-benzyl)-(5,6,7,8-tetrahydro-quinolin-8-yl)-amine
Preparation of (1H-indol-2-yl) methanol
LiAlH4 (1.0 m in THF, 5.0 mL, 5.0 mmol) was slowly added to a solution of indole-2-carboxylic acid (403 mg, 2.5 mmol) in dry THF (18 mL) at 0° C. The resultant yellow solution was warmed to room temperature and stirred for 18 hours. MeOH (0.5 mL) was added and the solution concentrated under reduced pressure (3×). The resultant orange syrup was partially dissolved in CHCl3 (150 mL) and washed consecutively with H2O (10 mL) and NH4Cl (10 mL). The aqueous layer was extracted with CHCl3 (2×25 mL). The combined organic extracts were dried (MgSO4) and concentrated under reduced pressure. Purification by column chromatography on silica gel (100% CH2Cl2) afforded the desired alcohol (250 mg, 68%) as a yellow solid. 1H NMR (CDCl3) δ 4.84 (s, 2H), 6.42 (d, 1H, J=0.9 Hz), 7.11–7.20 (m, 2H), 7.36 (d, 1H, J=7.5 Hz), 7.59 (d, 1H, J=7.5 Hz), 8.31 (br s, 1H).
To a solution of the alcohol (250 mg, 1.70 mmol) from above in CH2Cl2 (8.5 mL) was added MnO2 (85%, 1.74 g, 17.0 mmol) and the resulting suspension was stirred at room temperature for 4 hours. The reaction mixture was diluted with CH2Cl2, filtered through Celite and the cake was washed with CH2Cl2. The filtrate was concentrated under reduced pressure to afford the desired aldehyde (120 mg, 41%) as an orange-pink solid which was used without further purification in the next reaction.
Using General Procedure B: 1H-Indole-2-carbaldehyde (73 mg, 0.50 mmol) and N′-(1H-benzimidazol-2-ylmethyl)-N′-(5,6,7,8-tetrahydro-8-quinolinyl)-1,4-benzenedimethanamine (200 mg, 0.50 mmol) were stirred at room temperature in MeOH (5 mL) for 4.5 hours. NaBH4 (38 mg, 1.0 mmol) was added and the resultant mixture stirred for an additional 15 minutes. Purification of the crude light yellow foam by column chromatography on silica gel (200:1:1—EtOAc:MeOH:NH4OH followed by 100:1:1—EtOAc:MeOH:NH4OH) afforded AMD9692 (180 mg, 68%) as a tan foam. 1H NMR (CDCl3) δ 1.60–1.78 (m, 1H), 1.97–2.11 (m, 2H), 2.21–2.34 (m, 1H), 2.65–2.79 (m, 1H), 2.79–2.95 (m, 1H), 3.70 (s, 2H), 3.74 (s, 2H), 3.89 (s, 2H), 3.97 (d, 1H, J=16.8 Hz), 4.05–4.14 (m, 1H), 4.18 (d, 1H, J=16.8 Hz), 6.31 (s, 1H), 7.04–7.23 (m, 7H), 7.30 (d, 1H, J=8.1 Hz), 7.37 (d, 2H, J=8.1 Hz), 7.43 (d, 1H, J=7.2 Hz), 7.53 (d, 2H, 7.2 Hz), 7.65 (d, 1H, J=7.5 Hz), 8.59 (br s, 1H), 8.71 (d, 1H, J=3.9 Hz); 13C NMR (CDCl3) δ 20.58, 22.65, 28.42, 45.21, 47.76, 51.92, 52.97, 59.60, 99.48, 109.96 (2 carbons), 117.87, 118.67, 119.25, 120.51 (2 carbons), 121.47, 127.35, 127.66, 127.93, 133.96, 135.21, 136.45, 136.77, 137.40, 137.91, 146.12, 155.53, 156.63. ES-MS m/z 527.4 (M+H). Anal. Calcd. for C34H34N6.0.9H2O: C, 75.22; H, 6.65; N, 15.48. Found: C, 75.20; H, 6.58; N, 15.12.
EXAMPLE: 97




AMD9618: Preparation of (1H-Benzoimidazol-2-ylmethyl)-(4-{[(pyrrolidin-2-ylmethyl)-amino]-methyl}-benzyl)-(5,6,7,8-tetrahydro-quinolin-8-yl)-amine (hydrobromide salt)
Using General Procedure B: To a stirred solution of N-(tert-butoxycarbonyl)-D-prolinal (0.121 g, 0.61 mmol) in dry CH2Cl2 (9 mL) was added N′-(1H-benzimidazol-2-ylmethyl)-N′-(5,6,7,8-tetrahydro-8-quinolinyl)-1,4-benzenedimethanamine (0.236 g, 0.59 mmol) at room temperature and the mixture stirred for 40 min. To the resultant mixture was added sodium triacetoxyborohydride (0.174 g, 0.82 mmol) and the mixture stirred overnight at room temperature. Purification and separation of the crude material by radial chromatography on a 2 mm TLC grade silica gel plate (CH2Cl2/MeOH/NH4OH, 50:1:1) afforded the more polar mono-alkylated (77 mg, 23%) and the less polar dialkylated (70 mg, 21%) products, both as white foams.
Using General Procedure D: Conversion of the more polar monoalkylated amine from above (77 mg, 0.13 mmol) to the hydrobromide salt with simultaneous removal of the Boc group gave AMD9618 (46 mg) as a white solid. 1H NMR (D2O) □ 1.63–1.89 (m, 1H), 1.91–2.12 (br m, 4H), 2.15–2.32 (m, 3H), 2.37–2.48 (br m, 1H), 2.98–3.06 (m, 2H), 3.20–3.37 (m, 4H), 3.72 (s, 2H), 3.75–3.85 (m, 3H), 4.42 (d, 1H, J=16.5 Hz), 4.61 (d, 1H, J=16.5 Hz), 7.03 (d, 2H, J=7.8 Hz), 7.22 (d, 2H, J=7.8 Hz), 7.46–7.52 (m, 2H), 7.53–7.60 (m, 2H), 7.91 (dd, 1H, J=7.8, 1.8 Hz), 8.38 (d, 1H, J=8.1 Hz), 8.74 (d, 1H, J=5.7 Hz); 13C NMR (D2O) □20.43, 20.89, 23.17, 27.83, 28.98, 46.51, 47.50, 50.04, 51.08, 56.56, 56.65, 63.06, 113.93, 126.10, 126.68, 129.89, 130.22, 130.56, 130.84, 138.32, 139.68, 141.00; 148.25, 150.82, 151.64; ES-MS m/z 481 (M+H); Anal. Calcd. for C30H36N6.4.0HBr.3.5H2O: C, 41.54; H, 5.46; N, 9.69; Br, 36.85. Found: C, 41.67; H, 5.39; N, 9.61; Br, 36.78.
EXAMPLE: 98




AMD9619: (1H-Benzoimidazol-2-ylmethyl)-{4-[(bis-pyrrolidin-2-ylmethyl-amino)-methyl]-benzyl}-(5,6,7,8-tetrahydro-quinolin-8-yl)-amine (hydrobromide salt)
Using General Procedure D: Conversion of the less polar dialkylated amine from above (70 mg, 0.092 mmol) to the hydrobromide salt with simultaneous removal of the Boc group gave AMD9619 (42 mg) as a white solid. 1H NMR (D2O) □ 1.50–1.64 (m, 2H), 1.74–1.83 (m, 2H), 1;84–2.07 (br m, 4H), 2.08–2.47 (br m, 10H), 3.00–3.06 (m, 2H), 3.18–3.31 (m, 5H), 3.38 (s, 2H), 3.64–3.88 (m, 5H), 4.48 (d, 1H, J=16.8 Hz), 4.65 (d, 1H, J=16.5 Hz), 6.92 (d, 2H, J=7.8 Hz), 7.20 (d, 2H, J=7.2 Hz), 7.45–7.52 (m, 2H), 7.57–7.63 (m, 2H), 7.93 (t, 1H, J=7.2 Hz), 8.40 (d, 1H, J=8.1 Hz), 8.78 (d, 1H, J=5.7 Hz); 13C NMR (D2O) 20.47, 20.99, 23.18, 27.88, 28.07, 29.15, 45.60, 53.87, 53.93, 57.39, 63.45, 63.52, 114.04, 114.07, 126.12, 126.73, 130.33, 130.37, 130.53, 130.58, 136.02, 136.06, 139.69, 141.08, 148.34, 150.83, 152.46; ES-MS m/z 564 (M+H); Anal. Calcd. for C35H45N7.4.9HBr.3.8H2O: C, 40.87; H, 5.63; N, 9.53; Br, 39.06. Found: C, 40.86; H, 5.62; N, 9.30; Br, 38.06.
EXAMPLE: 99




AMD9669: Preparation of (1H-Benzoimidazol-2-ylmethyl)-(4-{[(pyrrolidin-2-ylmethyl)-amino]-methyl}-benzyl)-(5,6,7,8-tetrahydro-quinolin-8-yl)-amine (hydrobromide salt)
To a stirred solution of N′-(1H-benzimidazol-2-ylmethyl)-N′-(5,6,7,8-tetrahydro-8-quinolinyl)-1,4-benzenedimethanamine (0.231 g, 0.58 mmol) in dry MeOH (5.5 mL) was added N-(tert-butoxycarbonyl)-L-prolinal (0.116 g, 0.58 mmol) and the mixture was stirred at room temperature for 2.5 h. The reaction mixture was concentrated under reduced pressure and subjected to high vacuum for 1 h. The residue was dissolved in dry MeOH (5 mL) and to the resultant solution was added sodium borohydride (44 mg, 1.16 mmol), which was stirred for 0.5 h (see General Procedures XX). Purification by radial chromatography on a 2 mm TLC grade silica gel plate (CH2Cl2/MeOH/NH4OH, 100:1:1 followed by 50:1:1) afforded the desired product (0.151 g, 45%) as a colourless oil.
Using General Procedure D: Conversion of the free amine from above (151 mg, 0.26 mmol) to the hydrobromide salt with simultaneous removal of the Boc group gave AMD9669 (188 mg) as an off-white solid. 1H NMR (D2O) □ 1.60–1.76 (m, 1H), 1.78–2.13 (br m, 4H), 2.14–2.35 (m, 3H), 2.36–2.48 (br m, 1H), 2.98–3.04 (m, 2H), 3.20–3.37 (m, 4H), 3.71 (s, 2H), 3.75–3.90 (m, 3H), 4.42 (d, 1H, J=16.5 Hz), 4.60 (d, 1H, J=16.5 Hz), 7.02 (d, 2H, J=7.8 Hz), 7.21 (d, 2H, J=7.5 Hz), 7.45–7.52 (m, 2H), 7.52–7.59 (m, 2H), 7.90 (t, 1H, J=6.6 Hz), 8.37 (d, 1H, J=8.1 Hz), 8.73 (d, 1H, J=5.7 Hz); 13C NMR (D2O) 20.25, 20.71, 27.65, 28.80, 46.33, 47.31, 49.86, 50.89, 56.38, 62.88, 113.75, 125.92, 126.51, 129.71, 130.04, 130.35, 130.66, 138.13, 139.49, 140.83, 148.09, 150.63, 151.44; ES-MS m/z 481 (M+H); Anal. Calcd. for C30H36N6.4.0HBr.2.5H2O: C, 42.42; H, 5.34; N, 9.89; Br, 37.63. Found: C, 42.54; H, 5.30; N, 9.75; Br, 37.53.
EXAMPLE: 100




AMD9668: Preparation of (1H-Benzimidazol-2-ylmethyl)-(4-{[(1H-benzimidazol-2-ylmethyl)-amino]-methyl}-benzyl)-(5,6,7,8-tetrahydro-quinolin-8-yl)-amine (hydrobromide salt)
To a stirred solution of 1-(2-trimethylsilylethoxymethyl)-2-formyl-benzimidazole (prepared as described by Bridger et al. U.S. patent application Ser. No. 09/535,314) (0.150 g, 0.54 mmol) in dry MeOH (2.5 mL) was added a dry MeOH (2.5 mL) solution of N′-(1H-benzimidazol-2-ylmethyl)-N′-(5,6,7,8-tetrahydro-8-quinolinyl)-1,4-benzenedimethanamine (0.215 g, 0.54 mmol) under an argon atmosphere. The mixture was stirred at room temperature for 1.5 h then concentrated under reduced pressure and analyzed by 1H NMR. The residue was dissolved in dry MeOH (5 mL) and to the resultant solution was added sodium borohydride (41 mg, 1.08 mmol) and the reaction mixture stirred for 16 h (see General Procedures XX). Purification of the crude product by radial chromatography on a 2 mm TLC grade silica gel plate (CH2Cl2/MeOH/NH4OH, 100:1:1 followed by 50:1:1) afforded the desired product (0.165 g, 47%) as a pale yellow oil.
The material from above (0.110 g, 0.17 mmol) was dissolved in dry CH2Cl2 (2 mL) and trifluoroacetic acid (1 mL) was added dropwise. The resultant mixture was stirred overnight at room temperature. The reaction mixture was diluted with CH2Cl2 (15 mL) and then concentrated in vacuo. The resultant residue was diluted with CH2Cl2 (20 mL) and 1N NaOH (20 mL), the aqueous layer extracted with CH2Cl2 (2×15 mL), the phases separated and the combined organic extracts dried (Na2SO4), filtered, and concentrated in vacuo. Purification of the crude material by radial chromatography on a 1 mm TLC grade silica gel plate (CH2Cl2/MeOH/NH4OH, 100:1:1 followed by 75:1:1 and 50:1:1) afforded the desired product (45 mg, 51%) as a colourless oil.
Using General Procedure D: Conversion of the free amine from above (45 mg, 0.085 mmol) to the hydrobromide salt with simultaneous removal of the Boc group gave AMD9668 (68 mg) as a white solid. 1H NMR (D2O) □ 1.75–1.94 (br m, 1H), 2.11–2.30 (m, 2H), 2.30–2.45 (br m, 1H), 3.01 (br s, 2H), 3.60 (d, 1H, J=12 Hz), 3.73 (d, 1H, J=12.6 Hz), 3.87 (s, 2H), 4.37 (d, 1H, J=16.2 Hz), 4.49 (s, 2H), 4.57 (d, 1H, J=16.5 Hz), 6.98 (d, 2H, J=7.5 Hz), 7.09 (d, 2H, J=7.5 Hz), 7.26–7.40 (m, 2H), 7.40–7.49 (m, 2H), 7.49–7.61 (m, 2H), 7.59–7.73 (m, 2H), 7.91 (t, 1H, J=7.2 Hz), 8.38 (d, 1H, J=7.8 Hz) 8.72 (d, 1H, J=5.7 Hz); 13C NMR (D2O) 20.39, 20.85, 27.82, 41.56, 50.02, 50.83, 56.41, 62.92, 113.91 (2 carbons), 115.01 (2 carbons), 126.15, 126.60 (4 carbons), 129.78, 129.92 (2 carbons), 130.45, 130.65 (2 carbons), 133.25, 138.19, 139.67, 141.04, 142.99, 148.31, 150.75, 151.62; ES-MS m/z 528 (M+H). Anal. Calcd. for C29H33N5O.3.0HBr.2.0H2O: C, 43.69; H, 4.80; N, 10.81; Br, 35.23. Found: C, 43.80; H, 4.80; N, 10.57; Br, 35.09.
EXAMPLE: 101




AMD9574: Preparation of (1H-benzoimidazol-2-ylmethyl)-(4-{[(3-methylsulfanyl-pyridin-2-ylmethyl)-amino]-methyl}-benzyl)-(5,6,7,8-tetrahydro-quinolin-8-yl)-amine




Preparation of 3-methylsulfanyl-pyridine-2-carbaldehyde
To a cold (−78° C.) stirred solution of TMEDA (0.60 mL, 4.0 mmol) in dry diethyl ether (15 mL) was added a 2.5 M solution of nBuLi in hexanes (1.6 mL, 4.0 mmol). The resulting mixture was stirred 30 min at −78° C., at which point a solution of 3-(methylthio)pyridine (prepared as described by Trecourt, F.; Breton, G.; Bonnet, V.; Mongin, F.; Marsais, F.; Queguiner, G. Tetrahedron 2000, 56, 1349–1360) (500 mg, 4.0 mmol) in dry diethyl ether (5 mL) was added dropwise. The resulting red/orange solution was stirred 2 h at −78° C., then neat DMF (0.31 mL, 4.4 mmol) was added dropwise and stirring was continued for a further 2 h. Saturated aqueous sodium bicarbonate (20 mL) was added, then the phases were separated and the aqueous layer was extracted with CH2Cl2 (3×30 mL). The combined organic extracts were dried (MgSO4), and concentrated in vacuo. Purification of the crude material thus obtained by flash chromatography (silica gel, 4:1 hexanes-EtOAc) afforded 119 mg (19%) of 3-methylsulfanyl-pyridine-2-carbaldehyde. 1H NMR (CDCl3)] 2.45 (s, 3H), 7.42 (dd, 1H, J=8, 5 Hz), 7.67 (d, 1H, J=9 Hz), 8.50–8.52 (m, 1H), 10.14 (s, 1H).
Following the General Procedure B: (4-aminomethyl-benzyl)-(1H-benzoimidazol-2-ylmethyl)-(5,6,7,8-tetrahydro-quinolin-8-yl)-amine (122 mg, 0.31 mmol) and 3-methylsulfanyl-pyridine-2-carbaldehyde (47 mg, 0.31 mmol) were converted into the corresponding reductive amination product using the following quantities of reagents and solvents: sodium triacetoxyborohydride (130 mg, 0.62 mmol), CH2Cl2 (3 mL). The reaction time in this case was 18 h. Purification of the crude material thus obtained by radial chromatography (silica gel, 1 mm plate, 50:2:1 CH2Cl2-MeOH—NH4OH) afforded 48 mg (29%) of AMD9574 as a white foam. 1H NMR (CDCl3) □ 1.66–1.74 (m, 1H), 1.87–2.08 (m, 3H), 2.22–2.26 (m, 1H), 2.37 (s, 3H), 2.70–2.74 (m, 1H), 2.82–2.85 (m, 1H), 3.73 (s, 2H), 3.79 (s, 2H), 3.93 (s, 2H), 3.96 (d, 1H, J=16 Hz), 4.07 (dd, 1H, J=9, 6 Hz), 4.17 (d, 1H, J=16 Hz), 7.12 (dd, 1H, J=11, 7 Hz), 7.16–7.25 (m, 6H), 7.35 (d, 2H, J=8 Hz), 7.41 (dt, 2H, J=8, 1 Hz), 7.50–7.52 (m, 1H), 7.63–7.66 (m, 1H), 8.29 (dd, 1H, J=5, 1 Hz), 8.69 (dd, 1H, J=5, 1 Hz); 13C NMR (CDCl3) □ 15.1, 21.4, 23.3, 29.2, 48.5, 51.9, 53.3, 53.7, 60.0, 110.9, 118.7, 121.2, 121.6, 122.1, 128.2, 128.5, 132.6, 133.8, 134.6, 137.1, 137.9, 139.2, 144.7, 146.9, 156.2, 156.4, 157.5. ES-MS m/z 535 (M+H). Anal. Calcd. for C32H34N6S.0.4CH2Cl2–0.2H2O: C, 68.00; H, 6.20; N, 14.68; S, 5.60. Found: C, 68.40; H, 6.42; N, 14.31; S, 5.42.
EXAMPLE: 102




AMD9612: Preparation of (1H-benzoimidazol-2-ylmethyl)-(4-{[(3-methanesulfinyl-pyridin-2-ylmethyl)-amino]-methyl}-benzyl)-(5,6,7,8-tetrahydro-quinolin-8-yl)-amine




Preparation of 3-methanesulfinyl-pyridine-2-carbaldehyde
To a cold (0° C.), stirred solution of 3-methylsulfanyl-pyridine-2-carbaldehyde (prepared as described for AMD9574) (280 mg, 1.83 mmol) in a mixture of MeOH (20 mL) and water (2 mL) was added solid oxone (2.25 g, 3.66 mmol) and the resulting heterogeneous mixture was stirred for 5 h. At this point, the reaction mixture was diluted with CH2Cl2 (50 mL), and then filtered through celite, washed with CH2Cl2 (3×20 mL) and concentrated and dried in vacuo. Flash chromatography (silica gel, 4:1 hexanes-EtOAc) of the residue thus obtained afforded 70 mg (23%) of 3-methanesulfinyl-pyridine-2-carbaldehyde. 1H NMR (CDCl3) □ 2.86 (s, 3H), 7.81 (dd, 1H, J=8, 5 Hz), 8.66–8.69 (m, 1H), 8.90 (d, 1H, J=3 Hz), 10.12 (s, 1H).
Following the General Procedure B: (4-aminomethyl-benzyl)-(1H-benzoimidazol-2-ylmethyl)-(5,6,7,8-tetrahydro-quinolin-8-yl)-amine (164 mg, 0.41 mmol) and 3-methanesulfinyl-pyridine-2-carbaldehyde (70 mg, 0.41 mmol) were converted into the corresponding reductive amination product using the following quantities of reagents and solvents: sodium triacetoxyborohydride (175 mg, 0.82 mmol), CH2Cl2 (4 mL). The reaction time in this case was 18 h. Purification of the crude material thus obtained by radial chromatography (silica gel, 1 mm plate, 50:2:1 CH2Cl2-MeOH—NH4OH) afforded 80 mg (34%) of AMD9612 as a white foam. 1H NMR (CDCl3) □ 1.66–1.70 (m, 1H), 2.00–2.07 (m, 4H), 2.23–2.25 (m, 1H), 2.73–2.82 (m, 5H), 3.70 (s, 2H), 2.72 (s, 2H), 3.91 (s, 2H), 3.94 (d, 1H, J=15 Hz), 4.07 (dd, 1H, J=9, 6 Hz), 4.17 (dd, 1H, J=15 Hz), 7.14–7.24 (m, 5H), 7.34–7.37 (m, 2H), 7.39–7.42 (m, 2H), 7.50–7.52 (m, 1H), 7.60–7.61 (m, 1H), 8.33 (dt, 1H, J=8, 1 Hz), 8.57 (d, 1H, J=5 Hz), 8.70 (d, 1H, J=5 Hz); 13C NMR (CDCl3) □ 21.3, 23.4, 29.1, 43.6, 48.4, 52.5, 53.3, 53.6, 60.2, 121.4, 122.2, 123.6, 128.2, 128.7, 132.2, 134.7, 137.2, 138.2, 138.3, 141.9, 146.9, 150.6, 155.4, 156.2, 157.3. ES-MS m/z 551 (M+H). Anal. Calcd. for C32H34N6OS.1.3CH4O.0.3H2O: C, 66.91; H, 6.71; N, 14.06; S, 5.36. Found: C, 66.88; H, 6.39; N, 13.93; S, 5.26.
EXAMPLE: 103




AMD9624: Preparation of (1H-benzoimidazol-2-ylmethyl)-(4-{[(3-methoxy-pyrazin-2-ylmethyl)-amino]-methyl}-benzyl)-(5,6,7,8-tetrahydro-quinolin-8-yl)-amine
Following the General Procedure B: (4-aminomethyl-benzyl)-(1H-benzoimidazol-2-ylmethyl)-(5,6,7,8-tetrahydro-quinolin-8-yl)-amine (118 mg, 0.30 mmol) and 3-methoxypyrazinecarboxaldehyde (prepared as described by Lepretre, A.; Turck, A.; Ple, N.; Knochel, P.; Queguiner, G. Tetrahedron 1999, 56, 265–273) (41 mg, 0.30 mmol) were converted into the corresponding reductive amination product using the following quantities of reagents and solvents: sodium triacetoxyborohydride (126 mg, 0.60 mmol), CH2Cl2 (3 mL). The reaction time in this case was 18 h. Purification of the crude material thus obtained by radial chromatography (silica gel, 1 mm plate, 50:2:1 CH2Cl2-MeOH—NH4OH) afforded 36 mg (23%) of AMD9624 as a white foam. 1H NMR (CDCl3) □ 1.68–1.72 (m, 1H), 2.00–2.08 (m, 3H), 2.22–2.26 (m, 1H), 2.70–2.74 (m, 1H), 2.84–2.87 (m, 1H), 3.72 (s, 2H), 3.78 (s, 2H), 3.89 (s, 2H), 3.91 (s, 3H), 3.95 (d, 1H, J=16 Hz), 4.07 (dd, 1H, J=9, 6 Hz), 4.17 (d, 1H, J=16 Hz), 7.14–7.23 (m, 5H), 7.36 (d, 2H, J=8 Hz), 7.42 (dd, 1H, J=8, 1 Hz), 7.50–7.53 (m, 1H), 7.63–7.66 (m, 1H), 7.92 (d, 1H, J=3 Hz), 8.02 (d, 1H, J=3 Hz), 8.68 (dd, 1H, J=5, 1 Hz); 13C NMR (CDCl3) □ 21.4, 23.3, 29.2, 48.5, 49.0, 53.2, 53.4, 53.7, 60.1, 110.9, 118.7, 121.5, 122.2, 128.2, 128.6, 134.7, 135.4, 137.1, 138.0, 138.7, 139.0, 145.2, 146.9, 156.3, 157.4, 158.1. ES-MS m/z 542 (M+Na). Anal. Calcd. for C31H33N7O.0.4C4H8O2.1.8H2O: C, 66.67; H, 6.83; N, 16.69. Found: C, 66.31; H, 6.44; N, 16.39.
EXAMPLE: 104




AMD9675: Preparation of (1H-benzoimidazol-2-ylmethyl)-(4-{[(pyrimidin-2-ylmethyl)-amino]-methyl}-benzyl)-(5,6,7,8-tetrahydro-quinolin-8-yl)-amine
Following the General Procedure for alkylation: (4-aminomethyl-benzyl)-(1H-benzoimidazol-2-ylmethyl)-(5,6,7,8-tetrahydro-quinolin-8-yl)-amine (300 mg, 0.76 mmol) and 2-(chloromethyl)pyrimidine (prepared as described by Sakamoto, T.; Kaneda, S.; Hama, Y.; Yoshizawa, H.; Yamanaka, H. Heterocycles 1983, 20, 991–994) (88 mg, 0.68 mmol) were converted into the corresponding alkylation product using the following quantities of reagents and solvents: diisopropylethylamine (260 uL, 1.37 mmol), CH3CN (4 mL). The reaction time in this case was 24 h, while the reaction temperature was 40° C. The resulting crude material was purified by flash chromatography (silica gel, 20:2:1 CH2Cl2-MeOH—NH4OH) to provide a  ̃2:1 mixture of mono- and di-alkylation products; in our hands, separation of these compounds proved to be problematic. Thus, the mixture was taken up in THF (4 mL), and water (2 drops) and di-tert-butyl dicarbonate (436 mg, 2.0 mmol) were added. The resulting solution was stirred 2 h, then concentrated in vacuo and filtered through a plug of silica (elution with 20:2:1 CH2Cl2-MeOH—NH4OH). Radial chromatography (silica gel, 1 mm plate, 50:2:1 CH2Cl2-MeOH—NH4OH) of the crude material thus obtained afforded  ̃120 mg of a mixture of the mono- and di-BOC-protected mono-alkylation products. This mixture was taken up in neat TFA (1 mL) and stirred 30 min. Saturated aqueous sodium bicarbonate (5 mL) was cautiously added, and the resulting mixture was extracted with CH2Cl2 (3×10 mL) then the combined organic extracts were dried (MgSO4), and concentrated in vacuo. Purification of the crude material thus obtained by radial chromatography (silica gel, 1 mm plate, 50:1:1 CH2Cl2-MeOH—NH4OH) afforded 35 mg (9%) of AMD9675 as a white foam. 1H NMR (CDCl3) □ 1.68–1.72 (m, 1H), 2.00–2.06 (m, 2H), 2.24–2.35 (m, 2H), 2.70–2.74 (m, 1H), 2.84–2.87 (m, 1H), 3.72 (s, 2H), 3.92 (s, 2H), 3.95 (d, 1H, J=16 Hz), 4.02 (s, 2H), 4.07 (dd, 1H, J=9, 6 Hz), 4.17 (d, 1H, J=16 Hz), 7.10 (t, 1H, J=5 Hz), 7.15–7.24 (m, 5H), 7.35 (d, 2H, J=8 Hz), 7.42 (d, 1H, J=8 Hz), 7.58 (br s, 2H), 8.63 (d, 2H, J=5 Hz), 8.68 (dd, 1H, J=5, 1 Hz); 13C NMR (CDCl3) □ 21.4, 23.2, 29.2, 48.5, 53.2, 53.7, 54.9, 60.1, 110.9, 118.7, 119.0, 121.4, 122.2, 128.3, 128.6, 134.7, 137.1, 138.0, 138.9, 146.9, 156.2, 156.9, 157.4, 168.9. ES-MS m/z 490 (M+H). Anal. Calcd. for C30H31N7.0.1CH2Cl2–1.1H2O: C, 69.80; H, 6.50; N, 18.93. Found: C, 69.75; H, 6.35; N, 19.28.
EXAMPLE: 105




AMD9679: Preparation of N′-(1H-benzimidazol-2-ylmethyl)-N′-(5,6,7,8-tetrahydro-8-quinolinyl)-1,3-benzenedimethanamine
To a stirred solution of 8-amino-5,6,7,8-tetrahydroquinoline (6.43 g, 43 mmol) in CH2Cl2 (450 mL) at room temperature was added 3-cyanobenzaldehyde (5.69 g, 43 mmol) and sodium triacetoxyborohydride (17.0 g, 80 mmol) and the mixture stirred 16 h. The reaction was quenched with 1N NaOH (200 mL) and the phases separated. The organic phase was dried (Na2SO4) and concentrated under reduced pressure to give a yellow oil (11.7 g) which was purified by flash chromatography on silica gel (97:3 CH2Cl2/CH3OH) to provide N-(5,6,7,8-tetrahydro-8-quinolinyl)-3-cyanobenzylamine (9.10 g, 81%) as a pale yellow solid.
Using General Procedure for alkylation: A solution of the material from above (4.17 g, 15.8 mmol), potassium iodide (130 mg, 0.80 mmol) and N,N-diisopropylethylamine (5.2 mL, 30 mmol) in CH3CN (160 mL) was reacted with N-(tert-butoxycarbonyl)-2-chloromethylbenzimidazole (prepared as described by An, H.; Wang, T.; Mohan, V.; Griffey, R. H.; Cook, P. D Tetrahedron 1998, 54, 3999–4012) (4.22 g, 15.8 mmol). Purification of the crude material by flash chromatography on silica gel (1:1 EtOAc/hexanes) gave the alkylated product (6.86 g, 88%) as a yellow foam.
To a solution of the material from above (6.86 g, 13.9 mmol) in NH3 saturated methanol (100 mL) in a Parr bottle was added Raney nickel (approx 1 g) and the mixture hydrogenated at 50 psi hydrogen in a Parr hydrogenator for 17 h. The product mixture was filtered through Celite 521 and the solvent from the eluent removed in vacuo. Purification of the crude material by flash chromatography on silica gel (5% CH2Cl2/CH3OH/NH4OH, 19:1:0 followed by 18:1:1) gave AMD9679 (4.36 g, 79%) as a yellow foamy solid. 1H NMR (CDCl3) δ 1.58–1.75 (m, 1H), 1.96–2.09 (m, 2H), 2.24–2.30 (m, 1H), 2.70–2.94 (m, 2H), 3.74 (s, 2H), 3.78 (s, 2H), 3.94–4.20 (m, 3H), 7.07 (d, 1H, J=7.5 Hz), 7.15–7.21 (m, 4H), 7.30 (d, 1H, J=7.5 Hz), 7.36 (s, 1H), 7.43 (d, 1H, J=7.5 Hz), 7.47 (s br, 2H), 8.67 (d, 1H, J=4.2 Hz). 13C NMR (CDCl3) δ 21.77, 23.70, 29.65, 46.47, 49.12, 54.51, 60.78, 121.93(2), 122.65, 126.45, 127.61, 127.98, 128.83, 135.23, 137.70, 140.08, 142.72, 147.27, 156.35, 157.72. ES-MS m/z 398 (M+H). Anal. Calcd. for C25H27N5.1.0H2O.0.23CH2Cl2: C, 69.65; H, 6.82; N, 16.10. Found: C, 69.57; H, 6.91; N, 16.30.
EXAMPLE: 106




AMD9590: Preparation of (1H-Benzimidazol-2-ylmethyl)-(3-{[(5-butyl-pyridin-2-ylmethyl)-amino]-methyl}-benzyl)-(5,6,7,8-tetrahydro-quinolin-8-yl)-amine
Using the reductive amination general procedure B: Reaction of (3-aminomethyl-benzyl)-1H-benzimidazol-2-ylmethyl)-(5,6,7,8-tetrahydro-quinolin-8-yl)-amine (155 mg, 0.39 mmol), 5-butyl-pyridine-2-carbaldehyde (64 mg, 0.39 mmol), NaBH(OAc)3 (248 mg, 1.17 mmol), and AcOH (200 uL) for 1 h at room temperature followed by column chromatography on silica gel (EtOAc/MeOH/NH4OH 199:1:1) gave the title compound (67 mg, 32%) as a white foam.
Using general procedure D: Conversion of the foam from above to the hydrobromide salt gave AMD9590 as a white powder. 1H NMR (300 MHz, D2O) δ 0.85 (t, 3H, J=7.2 Hz), 1.23–1.30 (m, 2H), 1.53–1.60 (m, 2H), 1.75–2.00 (m, 1H), 2.18–2.27 (m, 2H), 2.41–2.42 (m, 1H), 2.72 (t, 2H, J=7.5 Hz), 3.02 (br s, 2H), 3.77 (d, 1H, J=12.9 Hz), 3.85 (d, 1H, J=12.9 Hz), 3.88 (s, 2H), 4.36 (s, 2H), 4.40 (d, 1H, J=16.5 Hz), 4.60 (d, 1H, J=16.5 Hz), 4.72–4.74 (m, 1H), 6.85 (d, 1H, J=7.8 Hz), 7.14 (t, 2H, J=7.8 Hz), 7.28 (d, 1H, J=7.8 Hz), 7.45–7.49 (m, 2H), 7.51–7.56 (m, 2H), 7.67 (d, 1H, J=8.1 Hz), 7.90 (dd, 1H, J=8.1, 6.3 Hz), 8.13 (dd, 1H, J=8.1, 2.1 Hz), 8.38 (d, 1H, J=7.5 Hz), 8.51 (d, 1H, J=1.8 Hz), 8.75 (d, 1H, J=4.8 Hz); 13C NMR (75.5 MHz, D2O) δ 13.45, 20.44, 20.89, 21.83, 27.85, 31.91, 32.38, 48.09, 49.88, 50.84, 56.66, 62.88, 113.86, 126.13, 126.80, 126.90, 129.60, 129.96, 130.20, 130.45, 131.28, 131.68, 137.62, 139.76, 140.99, 143.09, 143.93, 144.47, 145.34, 148.30, 150.72, 151.56. ES-MS m/z 545 (M+H). Anal. Calcd. C35H40N6.3.9(HBr).3.9H2O.0.1(C4H10O): C, 45.33; H, 5.66; N, 8.96; Br, 33.22; Found: C, 45.53; H, 5.65; N, 8.95; Br, 32.86.
EXAMPLE: 107




AMD9599: Preparation of (1H-benzimidazol-2-ylmethyl)-(3-{[(2,6-dichloro-pyridin-4-ylmethyl)-amino]-methyl}-benzyl)-(5,6,7,8-tetrahydro-quinolin-8-yl)-amine
Using general procedure B: Reaction of (3-aminomethyl-benzyl)-1H-benzimidazol-2-ylmethyl)-(5,6,7,8-tetrahydro-quinolin-8-yl)-amine (90 mg, 0.23 mmol), 2,6-dichloro-pyridine-4-carbaldehyde (40 mg, 0.23 mmol), and NaBH(OAc)3 (97 mg, 0.46 mmol) for 4 h at room temperature followed by column chromatography on silica gel (EtOAc/MeOH/NH4OH 199:1:1) gave the title compound (57 mg, 45%) as a white foam.
Using general procedure D: Conversion of the foam from above to the hydrobromide salt gave AMD9599 as a white powder. 1H NMR (300 MHz, D2O) δ 1.80–2.00 (m, 1H), 2.18–2.30 (m, 2H), 2.40–2.44 (m, 1H), 3.01 (br s, 2H), 3.72–3.86 (m, 4H), 4.11 (s, 2H), 4.38 (d, 1H, J=16.2 Hz), 4.58 (d, 1H, J=16.2 Hz), 4.70–4.73 (m, 1H), 6.84 (d, 1H, J=7.5 Hz), 7.05 (s, 1H), 7.14 (t, 1H, J=7.8 Hz), 7.27 (d, 1H, J=7.8 Hz), 7.31 (s, 2H), 7.44–7.47 (m, 2H), 7.50–7.55 (m, 2H), 7.90 (dd, 1H, J=7.5, 5.7 Hz), 8.37 (d, 1H, J=7.8 Hz), 8.74 (d, 1H, J=5.4 Hz); 13C NMR (75.5 MHz, D2O) δ 20.44, 20.86, 27.85, 48.19, 49.84, 50.62, 56.53, 62.76, 113.88, 124.21, 126.10, 126.66, 129.60, 129.89, 130.23, 130.68, 131.26, 131.65, 137.59, 139.79, 140.95, 146.49, 148.18, 150.80, 151.61. ES-MS m/z 557 (M+H). Anal. Calcd. C31H30N6Cl2.2.9(HBr).2.8H2O: C, 44.19; H, 4.61; N, 9.97; Cl, 8.42; Br, 27.50; Found: C, 44.37; H, 4.43; N, 9.91; Cl, 8.33; Br, 27.21.
EXAMPLE: 108




AMD 9600: Preparation of (1H-benzimidazol-2-ylmethyl)-(3-{[(2,6-dimethoxy-pyridin-4-ylmethyl)-amino]-methyl}-benzyl)-(5,6,7,8-tetrahydro-quinolin-8-yl)-amine
Using general procedure B: Reaction of (3-aminomethyl-benzyl)-1H-benzimidazol-2-ylmethyl)-(5,6,7,8-tetrahydro-quinolin-8-yl)-amine (144 mg, 0.36 mmol), 2,6-dimethoxy-pyridine-4-carbaldehyde (60 mg, 0.36 mmol), and NaBH(OAc)3 (153 mg, 0.72 mmol) for 19 h at room temperature followed by column chromatography on silica gel (EtOAc/MeOH/NH4OH 199:1:1) gave AMD9600 (100 mg, 51%) as a white foam. 1H NMR (300 MHz, CDCl3) δ 1.66–1.70 (m, 1H), 2.00–2.10 (m, 4H), 2.26–2.30 (m, 1H), 2.74–2.85 (m, 2H), 3.66 (s, 2H), 3.69 (s, 2H), 3.73 (s, 2H), 3.91 (s, 6H), 3.96 (d, 1H, J=16.5 Hz), 4.04–4.13 (m, 1H), 4.18 (d, 1H, J=16.5 Hz), 6.30 (s, 2H), 7.08 (d, 1H, J=7.5 Hz), 7.15–7.20 (m, 4H), 7.41–7.44 (m, 2H), 7.56 (br s, 2H), 8.68 (d, 1H, J=5.2 Hz); 13C NMR (75.5 MHz, CDCl3) δ 21.78, 23.59, 29.66, 49.06, 52.23, 53.24, 53.92, 54.47, 60.66, 100.57, 121.97, 122.67, 127.43, 127.76, 128.70, 128.81, 135.23, 137.71, 139.95, 140.11, 147.33, 155.26, 156.38, 157.68, 163.86. ES-MS m/z 549 (M+H). Anal. Calcd. C33H36N6O2.1.0(H2O): C, 69.94; H, 6.76; N, 14.83; 0, 8.47; Found: C, 69.75; H, 6.67; N, 14.45; O, 8.41.
EXAMPLE: 109




AMD9616: Preparation of (1H-benzimidazol-2-ylmethyl)-(3-{[(4,6-dimethyl-pyridin-2-ylmethyl)-amino]-methyl}-benzyl)-(5,6,7,8-tetrahydro-quinolin-8-yl)-amine (hydrobromide salt)
Using general procedure B: Reaction of (3-aminomethyl-benzyl)-1H-benzimidazol-2-ylmethyl)-(5,6,7,8-tetrahydro-quinolin-8-yl)-amine (150 mg, 0.38 mmol), 4,6-dimethyl-pyridine-2-carbaldehyde (52 mg, 0.38 mmol), and NaBH(OAc)3 (160 mg, 0.76 mmol) for 18 h at room temperature followed by column chromatography on silica gel (EtOAc/MeOH/NH4OH 199:1:1) gave the title compound (129 mg, 66%) as a white foam.
Using general procedure D: Conversion of the foam from above to the hydrobromide salt gave AMD9616 as a white powder. 1H NMR (300 MHz, D2O) δ 1.89–2.05 (m, 1H), 2.02–2.32 (m, 2H), 2.44–2.47 (m, 1H), 2.51 (s, 3H), 2.63 (s, 3H), 3.03 (br s, 2H), 3.85 (dd, 2H, J=24.33, 12.9 Hz), 3.96 (s, 2H), 4.42–4.46 (m, 3H), 4.62 (d, 1H, J=17.4 Hz), 6.88 (d, 1H, J=7.5 Hz), 7.16 (dd, 1H, J=7.8, 7.5 Hz), 7.22 (s, 1H), 7.32 (d, 1H, J=7.5 Hz), 7.48–7.63 (m, 6H), 7.92 (dd, 1H, J=7.2, 6.3 Hz), 8.39 (d, 1H, J=8.1 Hz), 8.78 (d, 1H, J=5.4 Hz), 13C NMR (75.5 MHz, D2O) δ 19.55, 20.46, 20.89, 21.89, 27.86, 46.81, 49.86, 51.15, 56.66, 63.84, 113.89, 126.11, 126.48, 126.80, 129.10, 129.71, 129.94, 130.45, 131.44, 131.83, 137.70, 139.80, 140.97, 143.24, 148.28, 150.68, 151.51, 155.22, 161.32. ES-MS m/z 517 (M+H). Anal. Calcd. C33H36N6.3.7(HBr).2.6(H2O): C, 45.93; H, 5.24; N, 9.74; Br, 34.26; Found: C, 45.89; H, 5.17; N, 9.41; Br, 34.39.
EXAMPLE: 110




AMD9617: Preparation of (1H-benzimidazol-2-ylmethyl)-(3-{[(2,6-dimethyl-pyridin-4-ylmethyl)-amino]-methyl}-benzyl)-(5,6,7,8-tetrahydro-quinolin-8-yl)-amine
Using general procedure B: Reaction of (3-aminomethyl-benzyl)-1H-benzimidazol-2-ylmethyl)-(5,6,7,8-tetrahydro-quinolin-8-yl)-amine (150 mg, 0.38 mmol), 2,6-dimethyl-pyridine-4-carbaldehyde (52 mg, 0.38 mmol), and NaBH(OAc)3 (160 mg, 0.76 mmol) for 18 h at room temperature followed by column chromatography on silica gel (EtOAc/MeOH/NH4OH 199:1:1) gave the title compound (125 mg, 64%) as a white foam.
Using general procedure D: Conversion of the foam from above to the hydrobromide salt gave AMD9617 as a white powder. 1H NMR (300 MHz, D2O) δ 1.88–1.90 (m, 1H), 2.20–2.33 (m, 2H), 2.43–2.46 (m, 1H), 2.68 (s, 6H), 3.03 (br s, 2H), 3.81–3.88 (m, 3H), 3.92 (s, 2H), 4.32 (s, 2H), 4.43 (d, 1H, J=16.2 Hz), 4.62 (d, 1H, J=16.2 Hz), 6.89 (d, 1H, J=7.5 Hz), 7.16 (dd, 1H, J=7.8, 7.5 Hz), 7.25 (s, 1H), 7.33 (d, 1H, J=7.5 Hz), 7.48–7.58 (m, 6H), 7.91 (dd, 1H, J=7.5, 6.0 Hz), 8.39 (d, 1H, J=7.8 Hz), 8.79 (d, 1H, J=. 5.4 Hz); 13C NMR (75.5 MHz, D2O) δ 18.34, 19.51, 19.94, 26.91, 47.89, 48.93, 50.14, 55.70, 61.88, 112.94, 124.26, 125.15, 125.82, 128.84, 128.92, 129.16, 129.54, 130.60, 130.84, 136.70, 138.86, 140.00, 147.31, 149.39, 149.74, 150.60, 153.49. ES-MS m/z 517 (M+H). Anal. Calcd. C33H36N6.3.8(HBr).3.8(H2O): C, 44.40; H, 5.35; N, 9.42; Br, 34.02; Found: C, 44.35; H, 5.15; N, 9.17; Br, 34.04.
EXAMPLE: 111




AMD9626: Preparation of (1H-benzimidazol-2-ylmethyl)-(5,6,7,8-tetrahydro-quinolin-8-yl)-amino]-methyl}-benzylamino)-methyl]-pyridin-3-ol
Using general procedure B: Reaction of (3-aminomethyl-benzyl)-1H-benzimidazol-2-ylmethyl)-(5,6,7,8-tetrahydro-quinolin-8-yl)-amine (158 mg, 0.40 mmol), 3-hydroxy-pyridine-2-carbaldehyde (49 mg, 0.40 mmol), and NaBH(OAc)3 (101 mg, 0.48 mmol) for 48 h at room temperature followed by column chromatography on silica gel (CH2Cl2/MeOH/NH4OH 194:3:3) gave AMD9626 (98 mg, 49%) as a white foam. 1H NMR (300 MHz, CDCl3) δ 1.72–1.73 (m, 1H), 2.00–2.08 (m, 2H), 2.26–2.31 (m, 1H), 2.75–2.86 (m, 2H), 3.72 (d, 1H, J=3.6 Hz), 3.77 (s, 2H), 3.98 (d, 1H, J=16.5 Hz), 4.08–4.11 (m, 1H), 4.14 (s, 1H), 4.16 (s, 2H), 7.08 (dd, 1H, J=7.2, 5.1 Hz), 7.10–7.22 (m, 6H), 7.28–7.30 (m, 1H), 7.42 (d, 1H, J=7.8 Hz), 7.46 (s, 1H), 7.50–7.51 (m, 1H), 7.61 (br s, 1H), 8.05 (dd, 1H, J=4.2, 1.5 Hz), 8.69–8.70 (m, 1H); 13C NMR (75.5 MHz, CDCl3) δ 21.84, 24.21, 29.63, 49.28, 53.30, 54.57, 61.05, 111.46, 119.07, 121.74, 122.65, 123.67, 123.96, 127.65, 128.34, 128.99, 135.08, 137.61, 138.36, 140.27, 140.42, 143.83, 147.45, 155.12, 156.49, 157.77. ES-MS m/z 505 (M+H). Anal. Calcd. C31H32N6O.0.7(CH2Cl2).1.4(H2O): C, 64.61; H, 6.19; N, 14.26; 0, 6.52; Found: C, 64.50; H, 5.92; N, 14.12; 0, 6.55.
EXAMPLE: 112




AMD9627: Preparation of (1H-benzimidazol-2-ylmethyl)-{3-[(1-pyridin-2-yl-ethylamino)-methyl]-benzyl}-(5,6,7,8-tetrahydro-quinolin-8-yl)-amine
Using the general procedure B: Reaction of (3-aminomethyl-benzyl)-1H-benzimidazol-2-ylmethyl)-(5,6,7,8-tetrahydro-quinolin-8-yl)-amine (150 mg, 0.38 mmol), 1-pyridin-2-yl-ethanone (42 uL, 0.38 mmol), NaBH(OAc)3 (97 mg, 0.46 mmol), and AcOH (150 uL) for 18 h at room temperature followed by column chromatography on silica gel (EtOAc/MeOH/NH4OH 199:1:1) gave the title compound (101 mg, 53%) as a white foam.
Using the general procedure D: Conversion of the foam from above to the hydrobromide salt gave AMD9627 as a white powder. 1H NMR (300 MHz, D2O) δ 1.60 (d, 3H, J=6.9 Hz), 1.75–2.06 (m, 1H), 2.20–2.24 (m, 2H), 2.28–2.40 (m, 1H), 3.03 (br s, 2H), 3.49–3.55 (m, 1H), 3.69 (d, 1H, J=13.2 Hz), 3.82 (dd, 2H, J=20.4, 13.2 Hz), 4.36–4.43 (m, 1H), 4.58 (d, 1H, J=16.5 Hz), 4.73–4.76 (m, 1H), 6.79 (d, 1H, J=7.5 Hz), 6.99 (s, 1H), 7.13 (dd, 1H, J=7.8, 7.5 Hz), 7.27 (d, 1H, J=7.5 Hz), 7.42–7.52 (m, 4H), 7.57 (d, 1H, J=7.8 Hz), 7.62 (ddd, 1H, J=6.3, 6.3, 0.9 Hz), 7.93 (dd, 1H, J=6.9, 6.6 Hz), 8.08 (dd, 1H, J=7.8, 7.8 Hz), 8.40 (d, 1H, J=7.8 Hz), 8.63–8.65 (m, 1H), 8.75 (d, 1H, J=5.4 Hz); 13C NMR (75.5 MHz, D2O) δ 18.36, 20.43, 20.87, 27.83, 49.07, 49.86, 56.65, 57.52, 62.93, 113.79, 124.22, 125.87, 126.11, 126.73, 129.37, 129.88, 130.41, 130.56, 130.99, 131.46, 137.55, 139.68, 141.00, 141.40, 148.28, 148.37, 150.73, 151.54, 153.34. ES-MS m/z 503 (M+H). Anal. Calcd. C32H34N6.3.6(HBr).3.4(H2O): C, 44.94; H, 5.23; N, 9.83; Br, 33.64; Found: C, 44.94; H, 5.00; N, 9.61; Br, 33.61.
EXAMPLE: 113




AMD9628: Preparation of (1H-benzimidazol-2-ylmethyl)-(5,6,7,8-tetrahydro-quinolin-8-yl)-{3-[(1-thiophen-3-yl-ethylamino)-methyl]-benzyl}-amine
Using general procedure B: Reaction of (3-aminomethyl-benzyl)-1H-benzimidazol-2-ylmethyl)-(5,6,7,8-tetrahydro-quinolin-8-yl)-amine (150 mg, 0.38 mmol), 3-acetylthiophene (48 mg, 0.38 mmol), NaBH(OAc)3 (104 mg, 0.49 mmol), and AcOH (150 uL) for 48 h at room temperature followed by column chromatography on silica gel (EtOAc/MeOH/NH4OH 199:1:1) gave the title compound (87 mg, 46%) as a white foam.
Using general procedure D: Conversion of the foam from above to the hydrobromide salt gave AMD9628 as a white powder. 1H NMR (300 MHz, D2O) δ 1.59 (d, 3H, J=6.9 Hz), 1.90–1.99 (m, 1H), 2.20–2.28 (m, 2H), 2.42–2.50 (m, 1H), 3.03 (br s, 2H), 3.25 (dd, 1H, J=13.2, 6.6 Hz), 3.47–3.56 (m, 1H), 3.77–3.87 (m, 2H), 4.35–4.47 (m, 2H), 4.59 (d, 1H, J=16.5 Hz), 4.73–4.81 (m, 1H), 6.74 (d, 1H, J=6.9 Hz), 6.87–6.88 (m, 1H), 7.13–7.18 (m, 2H), 7.26 (d, 1H, J=7.5 Hz), 7.44–7.51 (m, 4H), 7.54–7.55 (m, 1H), 7.59–7.62 (m, 1H), 7.93 (dd, 1H, J=7.2, 6.6 Hz), 8.40 (d, 1H, J=7.8 Hz), 8.72–8.75 (m, 1H); 13C NMR (75.5 MHz, D2O) δ 18.68, 20.43, 20.88, 27.82, 48.34, 49.91, 53.81, 56.69, 63.01, 113.80, 126.10, 126.26, 126.57, 126.76, 128.69, 129.09, 129.86, 130.48, 130.70, 130.79, 130.99, 131.25, 136.48, 137.50, 139.67, 140.98, 148.23, 150.77, 151.59. ES-MS m/z 508 (M+H). Anal. Calcd. C31H33N5S.2.9(HBr).2.7(H2O): C, 47.07; H, 5.26; N, 8.85; S, 4.05; Br, 29.30; Found: C, 46.95; H, 5.20; N, 8.61; S, 3.71; Br, 29.62.
EXAMPLE: 114




AMD9667: Preparation of (1H-benzimidazol-2-ylmethyl)-(3-{[(4-chloro-pyridin-2-ylmethyl)-amino]-methyl}-benzyl)-(5,6,7,8-tetrahydro-quinolin-8-yl)-amine
Using general procedure B: Reaction of (3-aminomethyl-benzyl)-1H-benzimidazol-2-ylmethyl)-(5,6,7,8-tetrahydro-quinolin-8-yl)-amine (133 mg, 0.33 mmol), 4-chloro-pyridine-2-carbaldehyde (47 mg, 0.33 mmol), NaBH4 (25 mg, 0.66 mmol), for 36 h at room temperature followed by column chromatography on silica gel (EtOAc/MeOH/NH4OH 199:1:1) gave the title compound (118 mg, 69%) as a white foam. 1H NMR (300 MHz, CDCl3) δ 1.63–1.66 (m, 1H), 1.94–2.04 (m, 2H), 2.24–2.26 (m, 1H), 2.65–2.86 (m, 2H), 3.72 (s, 2H), 3.75 (s, 2H), 3.82 (s, 2H), 3.97 (d, 1H, J=16.5 Hz), 4.04–4.09 (m, 1H), 4.17 (d, 1H, J=16.2 Hz), 7.09–7.20 (m, 6H), 7.28–7.30 (m, 2H), 7.38 (d, 1H, J=7.5 Hz), 7.48 (s, 1H), 7.55 (br s, 2H), 8.41 (d, 1H, J=5.1 Hz), 8.64 (d, 1H, J=3.6 Hz); 13C NMR (75.5 MHz, CDCl3) δ 19.59, 21.47, 27.45, 46.97, 51.54, 52.14, 52.25, 58.44, 110.29, 116.63, 119.72, 120.43, 120.55, 120.82, 125.28, 125.55, 126.56, 126.73, 133.00, 135.47, 137.80, 137.92, 142.68, 145.10, 148.27, 154.19, 155.53, 159.79. ES-MS m/z 523 (M+H). Anal. Calcd. C31H31N6Cl.1.0(H2O): C, 68.81; H, 6.15; N, 15.53; Cl, 6.55; Found: C, 68.82; H, 5.99; N, 15.50; Cl, 6.74.
EXAMPLE: 115




AMD9665: Preparation of (1H-Benzimidazol-2-ylmethyl)-(3-{[(pyridin-2-ylmethyl)-amino]-methyl}-benzyl)-(5,6,7,8-tetrahydro-quinolin-8-yl)-amine (hydrobromide salt)
Using general procedure B: Reaction of Pyridine-2-carbaldehyde (17.7 uL, 0.19 mmol), (3-aminomethyl-benzyl)-1H-benzimidazol-2-ylmethyl)-(5,6,7,8-tetrahydro-quinolin-8-yl)-amine (74 mg, 0.19 mmol) and sodium triacetoxyborohydride (36 mg, 0.22 mmol) in MeOH (1.8 mL) at room temperature under N2 for 18 h, followed by purification of the crude material by chromatography on silica gel (2:2:96 CH3OH—NH3 H2O—CH2Cl2) afforded the title compound (61 mg, 67%) as a white foam.
Using General Procedure D: Conversion of the foam from above (61 mg, 0.12 mmol) to the hydrobromide salt using an acetic acid/HBr solution, followed by re-precipitation of the salt from diethyl ether gave AMD9665 as a white solid. 1H NMR (CD3OD) {tilde over (1)}□□−2.02 (m, 1H), 2.21–2.32 (m, 2H), 2.48–2.53 (m, 1H), 3.02–3.15 (m, 2H), 3.85 (d, 1H, J=12.9 Hz), 3.94 (d, 1H, J=12.9 Hz), 4.29–4.63 (m, 6H), 4.71 (dd, 1H, J=5.7, 10.8 Hz), 7.17–7.21 (m, 2H), 7.43–7.46 (m, 1H), 7.51–7.59 (m, 2H), 7.69–7.87 (m, 4H), 7.97 (dd, 1H, J=6, 7.8 Hz), 8.17 (s, 1H), 8.17–8.20 (m, 1H); 8.41 (dd, 1H, J=1.2, 7.5 Hz), 8.75 (d, 1H, J=5.1 Hz), 9.06 (dd, 1H, J=1.2, 5.4 Hz); 13C NMR (CD3OD) δ 21.72, 21.87, two peaks overlapped with methanol, 52.25, 57.69, 62.22, 115.29, 127.21, 128.04, 130.60, 131.19, 132.31, 132.57, 132.95, 133.88, 138.73, 142.07, 143.22, 148.49, 149.43, 151.98, 152.66; ES-MS m/z 490.3 (M+H); Anal. Calcd. For (C31H29N5O).3.7(HBr).4.0(H2O): C, 43.29; H, 5.12; N, 9.77; Br, 34.37. Found: C, 43.21; H, 4.99; N, 9.65; Br, 34.50.
EXAMPLE: 116




AMD9672: (1H-Benzimidazol-2-ylmethyl)-[3-[(1-phenyl-ethylamino)-methyl]-benzyl]-(5,6,7,8-tetrahydro-quinolin-8-yl)-amine (hydrobromide salt)
Using general procedure B: Reaction of acetophenone (40 mg, 0.34 mmol), (3-aminomethyl-benzyl)-1H-benzimidazol-2-ylmethyl)-(5,6,7,8-tetrahydro-quinolin-8-yl)-amine (134 mg, 0.34 mmol) in MeOH (2 mL) at 60° C. overnight under N2 and 2 min of stirring after addition of sodium borohydride (25 mg, 0.66 mmol), followed by purification of the crude material by chromatography on silica gel (2:2:96 CH3OH—NH3 H2O—CH2Cl2) afforded the title compound (41 mg, 24%) as a white foam.
Using General Procedure D: Conversion of the foam from above (41 mg, 0.08 mmol) to the hydrobromide salt using an acetic acid/HBr solution, followed by re-precipitation of the salt from diethyl ether gave AMD9672 as a white solid. 1H NMR (CD3OD) {tilde over (1)}□□ (t, 3H, J=6.6 Hz), 1.89–1.98 (m, 1H), 2.23–2.27 (m, 2H), 2.48 (b, 1H), 3.06 (b, 2H), 3.69–4.09 (m, 4H), 4.36–4.66 (m, 4H), 6.98 (d, 1H, J=7.2 Hz), 7.16 (dd, 1H, J=7.1, 7.1 Hz), 7.38 (d, 1H, J=6.9 Hz), 7.50–7.58 (m, 7H), 7.73–7.76 (m, 2H), 7.98 (dd, 1H, J=3.5, 3.5 Hz), 8.07 (s, 1H), 8.41 (d, 1H, J=7.5 Hz), 9.04 (s, 1H); 13C NMR (CD3OD) δ 20.35, 21.75, 21.88, 29.24, two peaks overlapped with methanol, 57.59, 60.62, 62.18, 115.28, 127.19, 128.00, 129.50, 130.55, 130.90, 131.01, 131.26, 132.33, 133.34, 133.48, 137.82, 138.65, 142.07, 149.32, 152.10, 152.78; ES-MS m/z 502.3 (M+H); Anal. Calcd. For (C33H35N5).3(HBr).2.3(H2O): C, 50.44; H, 5.46; N, 8.91; Br, 30.50. Found: C, 50.74; H, 5.35; N, 8.73; Br, 30.24.
EXAMPLE: 117




AMD9686: (1H-Benzimidazol-2-ylmethyl)-(3-{[(1-phenyl-ethyl)-pyridin-2-ylmethyl-amino]-methyl}-benzyl)-(5,6,7,8-tetrahydro-quinolin-8-yl)-amine (hydrobromide salt)
Using general procedure B: Reaction of Pyridine-2-carbaldehyde (22 mg, 0.20 mmol, (1H-Benzimidazol-2-ylmethyl)-{3-[(1-phenyl-ethylamino)-methyl]-benzyl}-(5,6,7,8-tetrahydro-quinolin-8-yl)-amine (101 mg, 0.20 mmol) and sodium triacetoxyborohydride (58 mg, 0.26 mmol) in CH2Cl2 (2 mL) at room temperature under N2 for 20 h, followed by purification of the crude material by chromatography on silica gel (2:2:96 CH3OH—NH3 H2O—CH2Cl2) afforded the title compound (60 mg, 50%) as a white foam.
Using General Procedure D: Conversion of the foam from above (60 mg, 0.10 mmol) to the hydrobromide salt using an acetic acid/HBr solution, followed by re-precipitation of the salt from diethyl ether gave AMD9686 as a white solid. 1H NMR (CD3OD) 1.91 (d, 3H, J=6.6 Hz), 1.98–2.01 (m, 1H), 2.23–2.30 (m, 2H), 2.45–2.49 (m, 1H), 3.01–3.06 (m, 2H), 3.30 (s, 1H), 3.70–3.76 (m, 1H), 3.84 (d, 1H, J=12.3 Hz), 4.16–4.66 (m, 7H), 6.99 (d, 2H, J=4.2 Hz), 7.18 (b, 1H), 7.29 (b, 2H), 7.44–7.45 (m, 3H), 7.48–7.53 (m, 2H), 7.65–7.66 (m, 3H), 7.74–7.77 (m, 2H), 7.98–8.03 (m, 1H), 8.09 (s, 1H), 8.31 (s, 1H), 8.42 (d, 1H, J=7.8 Hz), 9.08 (dd, 1H, J=5.5, 5.5 Hz); 13C NMR (CD3OD) δ 16.95, 17.30, 21.77, 21.88, 29.23, 54.14, 57.64, 58.28, 58.56, 62.34, 67.03, 67.29, 115.27, 125.70, 127.27, 128.01, 130.36, 130.78, 130.97, 131.49, 131.70, 132.26, 132.51, 132.79, 134.44, 134.51, 136.55, 138.32, 141.03, 141.96, 142.19, 148.45, 149.49, 151.98, 152.76; ES-MS m/z 593.4 (M+H); Anal. Calcd. For (C38H38N6).3.9(HBr).1.3(H2O).0.6(C4H10O): C, 50.43; H, 5.29; N, 8.73; Br, 32.39. Found: C, 50.45; H, 5.32; N, 8.71; Br, 32.35.
EXAMPLE: 118




AMD9740: Preparation of 2-(4-{[(1H-Benzimidazol-2-ylmethyl)-(5,6,7,8-tetrahydro-quinolin-8-yl)-amino]-methyl}-benzylamino)-phenol (hydrobromide salt)
Preparation of 4-hydroxymethylbenzaldehyde
Terephthaldicarboxaldehyde (30.02 g, 224 mmol), methanol (200 mL), palladium on activated carbon, (10%, 3.02 g) and 2-(aminomethyl)pyridine (2.3 mL, 22 mol, 0.01 mol equiv) were combined in a hydrogenation vessel and the reaction mixture was shaken on a Parr hydrogenator for 2.5 hours at 40 psi of hydrogen. The mixture was filtered through celite, the cake washed with methanol and the solvent from the eluent removed in vacuo. Purification of the crude product by column chromatography on silica gel (EtOAc/Hexanes, 1:1) afforded the title compound (23.8 g, 78%) as a white solid. 1H NMR (CDCl3) □ 4.80 (s, 2H), 7.53 (d, 2H, J=9 Hz), 7.87 (d, 2H, J=9 Hz), 10.00 (s, 1H).
Preparation of 4-{[(1H-Benzimidazol-2-ylmethyl)-(5,6,7,8-tetrahydro-quinolin-8-yl)-amino]-methyl}-benzaldehyde
To a stirred solution of 8-amino-5,6,7,8-tetrahydroquinoline (5.56 g, 37.5 mmol) in dry MeOH (150 mL) was added 4-hydroxymethylbenzaldehyde (7.22 g, 52.5 mmol) under an argon atmosphere and the mixture was stirred overnight at room temperature. To the resultant solution was added sodium borohydride (2.85 g, 75 mmol) in three portions over 45 minutes and the reaction mixture stirred for 24 h to afford a pale yellow oil which was used in the next step without any further purification (see General Procedures A and B).
To a stirred solution of the oil from above (7.64 g) in dry CH3CN (100 mL) was added N,N-diisopropylethylamine (10 mL, 57 mmol), potassium iodide (0.24 g, 1.4 mmol) and 1-N-tert-butoxycarbonyl-2-chloromethylbenzimidazole (7.98 g, 29.9 mmol) as a solution in CH3CN (50 mL). The mixture was stirred under an argon atmosphere at 60° C. overnight. The reaction mixture was concentrated in vacuo, diluted with CH2Cl2 (100 mL) and washed with saturated aqueous ammonium chloride (150 mL). The aqueous layer was extracted with CH2Cl2 (2×50 mL) and the combined organic layers were dried (Na2SO4), filtered, and concentrated in vacuo.
A solution of the crude material from above in CH2Cl2/trifluoroacetic acid (2:1, 30 mL) was stirred for 3 h at room temperature. The reaction mixture was diluted with CH2Cl2 (30 mL) and concentrated in vacuo. The residue was diluted with CH2Cl2 (50 mL) and washed with 1N NaOH (50 mL). The aqueous layer was extracted with CH2Cl2 (2×30 mL) and the combined organic layers were dried (Na2SO4), filtered, and concentrated in vacuo to afford a brown foam. The resultant alcohol was used in the next step without any further purification.
To a stirred solution of the alcohol from above (9.29 g) in dry CH2Cl2 (200 mL) was added MnO2 (20.3 g, 233 mmol) and the mixture stirred for 4 h at room temperature. An additional portion of MnO2 (8.5 g, 97.8 mmol) was then added and the mixture stirred overnight at room temperature. The reaction mixture was filtered through a celite pad, the cake washed with CHCl3 and the resultant filtrate concentrated in vacuo. Purification of the crude product by column chromatography on silica gel (CH2Cl2/MeOH, 97:3 followed by 96:4) afforded the aldehyde (5.08 g, 34%, 5 steps) as a pale yellow solid. 1H NMR (CDCl3) □ 1.56–1.74 (br m, 2H), 1.92–2.09 (m, 2H), 2.28–2.32 (m, 1H), 2.70–2.94 (m, 2H), 3.84 (s, 2H), 3.94 (d, 1H, J=16.5 Hz), 4.08–4.14 (m, 1H), 4.23 (d, 1H, J=16.5 Hz), 7.18–7.26 (m, 4H), 7.45 (d, 1H, J=7.8 Hz), 7.56 (d within m, 4H, J=13.5 Hz), 7.76 (d, 2H, J=8.1 Hz), 8.72 (d, 1H, J=4.2 Hz), 9.92 (s, 1H). ES-MS m/z 397 (M+H).
Using General Procedure B: To a stirred solution of 4-{[(1H-Benzimidazol-2-ylmethyl)-(5,6,7,8-tetrahydro-quinolin-8-yl)-amino]-methyl}-benzaldehyde (190 mg, 0.48 mmol) and 2-aminophenol (65 mg, 0.60 mmol) in THF (5 mL) and acetic acid (0.25 mL) was added NaBH(OAc)3 (147 mg, 0.69 mmol) and the mixture stirred at room temperature overnight. Purification of the crude material by column chromatography on silica gel gel (CH2Cl2/MeOH/NH4OH, 95:4:1) afforded the desired product (157 mg, 67%) as a yellow foam.
Using General Procedure D: Conversion of the foam from above (54 mg, 0.11 mmol) to the hydrobromide salt followed by re-precipitation of the intermediate solid from methanol/ether gave AMD9740 (72 mg, 86%) as a rose solid. 1H NMR (D2O) 1.87–1.92 (m, 1H), 2.18–2.25 (m, 2H), 2.39–2.42 (m, 1H), 3.02–3.04 (m, 2H), 3.77 (d, 1H, J=12.6 Hz), 3.83 (d, 1H, J=12.6 Hz), 3.96 (d, 1H, J=13.5 Hz), 4.01 (d, 1H, J=13.5 Hz), 4.40 (d, 1H, J=16.5 Hz), 4.59 (d, 1H, J=16.5 Hz), 4.69–4.79 (m, 1H, overlap with HOD), 6.79 (t, 1H, J=7.8 Hz), 6.86–6.96 (m, 4H), 7.13 (d, 2H, J=7.8 Hz), 7.24 (t, 1H, J=7.8 Hz), 7.48 (dd, 2H, J=6, 3 Hz), 7.57 (dd, 2H, J=6, 3 Hz), 7.92 (dd, 1H, J=7.8, 6 Hz), 8.39 (d, 1H, J=8.1 Hz), 8.75 (d, 1H, J=5.5 Hz); 13C NMR (D2O) □ 20.46, 20.88, 27.83, 49.94, 52.87, 56.61, 62.93, 113.92, 117.17, 120.82, 121.63, 124.30, 126.12, 126.71, 130.48, 131.37, 137.93, 139.66, 140.99, 148.28, 150.06, 150.82, 151.61. ES-MS m/z 490 (M+H). Anal. Calcd. for C31H31N5O.3.0HBr.1.8H2O: C, 48.79; H, 4.96; N, 9.18; Br, 31.20. Found: C, 49.13; H, 4.91; N, 8.80; Br, 30.82.
EXAMPLE: 119




AMD9744: Preparation of (1H-Benzimidazol-2-ylmethyl)-{4-[(1H-pyrazol-3-ylamino)-methyl]-benzyl}-(5,6,7,8-tetrahydro-quinolin-8-yl)-amine (hydrobromide salt)
Using General Procedure B: To a stirred solution of 4-{[(1H-Benzimidazol-2-ylmethyl)-(5,6,7,8-tetrahydro-quinolin-8-yl)-amino]-methyl}-benzaldehyde (199 mg, 0.50 mmol) and 3-aminopyrazole (60 mg, 0.72 mmol) in THF (5 mL) and acetic acid (0.2 mL) was added NaBH(OAc)3 (166 mg, 0.78 mmol) and the resultant mixture stirred at room temperature for 2.5 days. Purification of the crude material by radial chromatography on silica gel gel (2 mm plate, CH2Cl2/MeOH/NH4OH, 100:1:1 then 50:1:1) afforded the desired amine (52 mg, 23%) as a white foam.
Using General Procedure D: Conversion of the foam from above (43 mg, 0.093 mmol) to the hydrobromide salt followed by re-precipitation of the intermediate solid from methanol/ether gave AMD9744 (54 mg, 78%) as a grey solid. 1H NMR (D2O) 1.91–1.94 (m, 1H), 2.22–2.34 (m, 2H), 2.41–2.46 (m, 1H), 3.04–3.05 (m, 2H), 3.77 (d, 1H, J=12.6 Hz), 3.84 (d, 1H, J=12.6 Hz), 3.90 (s, 2H), 4.46 (d, 1H, J=16.5 Hz), 4.64 (d, 1H, J=16.5 Hz), 4.74–4.79 (m, 1H, overlap with HOD), 5.70 (s, 1H), 6.94 (d, 2H, J=7.8 Hz), 7.15 (d, 2H, J=7.8 Hz), 7.47 (dd, 2H, J=6, 3 Hz), 7.57 (dd, 2H, J=6, 3 Hz), 7.72 (s, 1H), 7.91 (dd, 1H, J=7.2, 6.6 Hz), 8.39 (d, 1H, J=7.8 Hz), 8.75 (d, 1H, J=5.7 Hz); 13C NMR (D2O) □ 20.48, 20.91, 27.85, 47.20, 50.33, 56.62, 63.19, 113.76, 126.04, 126.52, 127.59, 130.46, 135.53, 135.80, 137.40, 139.61, 140.91, 148.20, 150.92, 151.40, 151.87. ES-MS m/z 464 (M+H). Anal. Calcd. for C28H29N7.3.1HBr.1.6H2O: C, 45.25; H, 4.79; N, 13.19; Br, 33.33. Found: C, 45.55; H, 4.83; N, 12.92; Br, 32.98.
EXAMPLE: 120




AMD9703: Preparation of (S)-5-[(4-{[(1H-Benzimidazol-2-ylmethyl)-(5,6,7,8-tetrahydro-quinolin-8-yl)-amino]-methyl}-benzylamino)-methyl]-pyrrolidin-2-one (hydrobromide salt)
Preparation of (S)-5-(aminomethyl)-2-pyrrolidinone
To a suspension of (S)-5-(hydroxymethyl)-2-pyrrolidinone p-toluenesulfonate (1.358 g, 5.04 mmol) and sodium azide (1.65 g, 25.4 mmol) in DMF (5 mL) was added sodium hydride (25 mg, 1.04 mmol) and the mixture stirred at 60° C. overnight. The reaction was concentrated in vacuo then redissolved in CH2Cl2 (40 mL) and brine (40 mL). The aqueous layer was extracted with CH2Cl2 (2×25 mL), the phases separated and the combined organic extracts dried (Na2SO4), filtered and concentrated. The resultant crude oil (1.07 g) was used without further purification in the next step.
To a solution of the crude azide from above (0.57 g) in MeOH (10 mL) was added palladium on activated carbon (10%, 100 mg) and the mixture was hydrogenated (Parr hydrogenator, 45 psi) for 3 h. The reaction mixture was filtered through Celite and the cake was washed with methanol and CH2Cl2. The combined filtrates were evaporated under reduced pressure to afford the title compound as a clear oil (0.368 g, 63% over 2 steps). 1H NMR (CDCl3) □ 1.27 (br s, 2H), 1.73–1.78 (m, 1H), 2.18–2.27 (m, 1H), 2.33–2.39 (m, 2H), 2.65 (dd, 1H, J=12, 9 Hz), 2.87 (dd, 1H, J=12, 3 Hz), 3.64–3.70 (m, 1H), 6.52 (br s, 1H).
4-{[(1H-Benzimidazol-2-ylmethyl)-(5,6,7,8-tetrahydro-quinolin-8-yl)-amino]-methyl}-benzaldehyde (192 mg, 0.48 mmol) was condensed with (S)-5-(aminomethyl)-2-pyrrolidinone (92 mg, 0.79 mmol) in dry MeOH (5 mL) for 2.5 h at room temperature and the resultant imine was reduced with sodium borohydride (48 mg, 1.27 mmol) for 1 h (see General Procedures A and B). Purification of the crude material by radial chromatography on silica gel gel (2 mm plate, CH2Cl2/MeOH/NH4OH, 50:1:1 then 25:1:1) afforded the free amine (227 mg, 95%) as a white foam.
Using General Procedure D: Conversion of the foam from above (146 mg, 0.30 mmol) to the hydrobromide salt followed by re-precipitation of the intermediate solid from methanol/ether gave AMD9703 (186 mg, 75%) as a white solid. 1H NMR (D2O) 1.72–1.90 (m, 2H), 2.20–2.43 (m, 6H), 2.94 (d, 2H, J=6 Hz), 3.01–3.03 (br m, 2H), 3.71 (s, 2H), 3.79 (d, 1H, J=12.6 Hz), 3.87 (d, 1H, J=12.6 Hz), 3.94–4.00 (m, 1H), 4.45 (d, 1H, J=16.5 Hz), 4.64 (d, 1H, J=16.5 Hz), 4.75–4.79 (m, 1H, overlap with HOD), 7.04 (d, 2H, J=7.8 Hz), 7.23 (d, 2H, J=7.8 Hz), 7.49 (dd, 2H, J=6.3, 3 Hz), 7.58 (dd, 2H, J=6.3, 3 Hz), 7.92 (dd, 1H, J=7.5, 6.3 Hz), 8.39 (d, 1H, J=7.8 Hz), 8.76 (d, 1H, J=5.7 Hz); 13C NMR (D2O) □ 18.31, 18.80, 22.35, 25.71, 27.48, 48.01, 48.69, 48.89, 49.51, 54.52, 60.97, 111.81, 123.99, 124.55, 127.97, 128.08, 128.34, 128.68, 135.96, 137.56, 138.87, 146.15, 148.63, 149.55, 179.87. ES-MS m/z 495 (M+H). Anal. Calcd. for C30H34N6O.3.5HBr.1.3H2O.0.5C4H10O: C, 45.85; H, 5.42; N, 10.02; Br, 33.36. Found: C, 45.70; H, 5.36; N, 9.96; Br, 33.59.
EXAMPLE: 121




AMD9751: Preparation of 3-[(4-{[(1H-Benzimidazol-2-ylmethyl)-(5,6,7,8-tetrahydro-quinolin-8-yl)-amino]-methyl}-benzylamino)-methyl]-piperidin-2-one (hydrobromide salt)
Preparation of HN3 Solution in CHCl3 
To an ice-cooled solution of NaN3 in H2O (10 mL) was added CHCl3 (10 mL) followed by 1 N H2SO4 (5 mL) dropwise. The biphasic mixture was stirred vigorously at 0° C. for 30 min then transferred to a separatory funnel and the layers separated. The organic layer was dried (Na2SO4), filtered and used in the following reaction.
Preparation of 3-(aminomethyl)-2-piperidone:
To a suspension of 3-(hydroxymethyl)-2-piperidone (prepared as described by Altman, J.; Ben-Ishai, D. Tetrahedron: Asymmetry 1993, 4, 91–100) (0.438 g, 3.39 mmol) and triphenylphosphine (0.97 g, 3.70 mmol) in THF (10 mL) was added the HN3 solution in CHCl3 from above (5 mL, 5 mmol). The mixture was cooled to 0° C. and diethyl azodicarboxylate (0.65 mL, 4.1 mmol) added dropwise. The reaction was stirred at room temperature overnight then concentrated in vacuo and purified by column chromatography on silica gel (CHCl3/MeOH, 96:4) to afford the desired azide (0.183 g, 35%) as a white solid.
To a solution of the azide from above (85 mg, 0.55 mmol) in MeOH (5 mL) was added palladium on activated carbon (10%, 28 mg) and the mixture was stirred under hydrogen (1 atmosphere) for 2 d. The reaction mixture was filtered through Celite and the cake was washed with methanol and CH2Cl2. The combined filtrates were evaporated under reduced pressure to afford the title compound as a clear oil (68 mg, 96%).
4-{[(1H-Benzimidazol-2-ylmethyl)-(5,6,7,8-tetrahydro-quinolin-8-yl)-amino]-methyl}-benzaldehyde (147 mg, 0.37 mmol) was condensed with 3-(aminomethyl)-2-piperidone (68 mg, 0.53 mmol) in dry MeOH (5 mL) for 2 h at room temperature and the resultant imine was reduced with sodium borohydride (50 mg, 1.32 mmol) overnight (see General Procedures A and B). Purification of the crude material by radial chromatography on silica gel gel (2 mm plate, CH2Cl2/MeOH/NH4OH, 50:1:1) afforded the free amine (115 mg, 61%) as a white foam.
Using General Procedure D: Conversion of the foam from above (95 mg, 0.19 mmol) to the hydrobromide salt followed by re-precipitation of the intermediate solid from methanol/ether gave AMD9751 (134 mg, 83%) as a yellow solid. 1H NMR (D2O) 1.38–1.45 (m, 1H), 1.62–1.79 (m, 1H), 1.84–1.90 (m, 3H), 2.24–2.30 (m, 2H), 2.42–2.46 (m, 1H), 2.57–2.62 (m, 1H), 2.86–2.89 (m, 1H), 2.95–3.03 (m, 3H), 3.19–3.25 (m, 2H), 3.65–3.76 (m, 2H), 3.78 (d, 1H, J=12.9 Hz), 3.86 (d, 1H, J=12.9 Hz), 4.46 (d, 1H, J=16.5 Hz), 4.65 (d, 1H, J=16.5 Hz), 4.74–4.79 (m, 1H, overlap with HOD), 7.03 (d, 2H, J=7.8 Hz), 7.24 (d, 2H, J=7.8 Hz), 7.49 (dd, 2H, J=6, 3.3 Hz), 7.58 (dd, 2H, J=6, 3.3 Hz), 7.93 (dd, 1H, J=7.2, 6.6 Hz), 8.40 (d, 1H, J=7.8 Hz), 8.77 (d, 1H, J=5.7 Hz); 13C NMR (D2O) □ 20.49, 20.93, 20.98, 24.32, 27.89, 36.68, 41.75, 48.22, 50.07, 50.27, 56.68, 63.20, 113.99, 126.16, 126.73 (2 carbons), 129.92 (2 carbons), 130.49, 130.90 (2 carbons), 137.99, 139.73 (2 carbons), 141.02, 148.32 (2 carbons), 150.80, 151.78, 174.97. ES-MS m/z 509 (M+H). Anal. Calcd. for C31H36N6O.3.5HBr.1.9H2O.0.5C4H10O: C, 45.92; H, 5.64; N, 9.74; Br, 32.40. Found: C, 45.81; H, 5.50; N, 9.69; Br, 32.54.
EXAMPLE: 122




AMD9678: Preparation of (1H-benzimidazol-2-ylmethyl)-[4-(3,4-dihydro-1H-isoquinolin-2-ylmethyl)-benzyl]-(5,6,7,8-tetrahydro-quinolin-8-yl)-amine (hydrobromide salt)
Using General Procedure B: To a stirred solution of 1,2,3,4-tetrahydroisoquinoline (49 mg, 0.37 mmol), 4-{[(1H-benzimidazol-2-ylmethyl)-(5,6,7,8-tetrahydro-quinolin-8-yl)-amino]-methyl}-benzaldehyde (140 mg, 0.34 mmol), and AcOH 0.020 mL, 0.35 mmol) in THF (3.5 mL) was added NaBH(OAc)3 (94 mg, 0.44 mmol) and the mixture was stirred at room temperature for 2 h. Purification of the crude material by column chromatography on silica gel (500:5:1 CH2Cl2/MeOH/NH4OH) afforded a colourless foam (137 mg).
Using General Procedure D: Conversion of the foam from above (131 mg, 0.255 mmol) to the hydrobromide salt followed by re-precipitation of the intermediate solid from methanol/ether gave AMD9678 (171 mg, 64%) as a colourless solid. 1H NMR (D2O) □ 1.90 (m, 1H), 2.18–2.54 (m, 4H), 3.03 (m, 4H), 3.42–3.66 (m, 2H), 3.83 (m, 2H), 4.01 (m, 2H), 4.15 (dd, 1H, J=15, 6 Hz), 4.49 (dd, 1H, J=17, 3.6 Hz), 4.67 (d, 1H, J=17 Hz), 4.78 (m, 1H), 7.11 (m, 5H), 7.30 (m, 5H), 7.48 (m, 2H), 7.93 (m, 1H), 8.40 (d, 1H, J=8.1 Hz), 8.79 (m, 1H); 13C NMR (D2O) □ 20.45, 21.02, 25.17, 27.88, 49.07, 50.48, 52.17, 56.79, 58.15, 63.49, 113.64, 126.16, 126.64, 127.24, 127.43, 127.54, 127.77, 128.91, 129.22, 130.27, 130.88, 131.85, 138.59, 139.74, 141.09, 148.34, 150.73, 151.94. ES-MS m/z 514 (M+H). Anal. Calcd. for C34H35N5.3.1HBr.2.8H2O: C, 50.11; H, 5.40; N, 8.59; Br, 30.39. Found: C, 49.94; H, 5.30; N, 8.44; Br, 30.56.
EXAMPLE: 123




AMD9684: Preparation of (S)-Pyrrolidine-2-carboxylic acid 4-{[(1H-benzimidazol-2-ylmethyl)-(5,6,7,8-tetrahydro-quinolin-8-yl)-amino]-methyl}-benzylamide (hydrobromide salt)
To a stirred solution of N′-(1H-benzimidazol-2-ylmethyl)-N′-(5,6,7,8-tetrahydro-8-quinolinyl)-1,4-benzenedimethanamine (148 mg, 0.37 mmol) in dry CH2Cl2 (5 mL) was added N-(tert-butoxycarbonyl)-L-proline (88 mg, 0.41 mmol), N,N-diisopropylethylamine (0.13 mL, 0.75 mmol), 1-hydroxybenzotriazole hydrate (68 mg, 0.50 mmol) and 1-(3-dimethylaminopropyl)-3-ethyl carbodiimide HCl (EDC) (99 mg, 0.52 mmol) and the mixture stirred at room temperature overnight. The reaction mixture was diluted with CH2Cl2 (25 mL) and saturated aqueous sodium bicarbonate (30 mL) and the aqueous layer was separated and extracted with CH2Cl2 (2×15 mL). The combined organic phases were dried (Na2SO4), filtered and evaporated in vacuo to give the crude product as a white foam. Purification by column chromatography on silica gel (CH2Cl2/MeOH, 96:4) gave the desired amide (214 mg, 85%) as a white foam.
Using General Procedure D: Conversion of the foam from above (185 mg, 0.31 mmol) to the hydrobromide salt with simultaneous removal of the N-tert-butoxycarbonyl protecting group followed by re-precipitation of the intermediate solid from methanol/ether gave AMD9684 (208 mg, 83%) as a white solid. 1H NMR (D2O) 1.86–2.03 (m, 4H), 2.18–2.24 (m, 2H), 2.36–2.42 (m, 2H), 3.00–3.02 (br m, 2H), 3.33–3.38 (m, 2H), 3.70–3.81 (m, 3H), 3.86–3.93 (m, 1H), 4.28 (t, 1H, J=7.2 Hz), 4.41 (d, 1H, J=16.5 Hz), 4.59 (d, 1H, J=16.5 Hz), 4.70–4.79 (m, 1H, overlap with HOD), 6.81 (d, 2H, J=7.8 Hz), 7.10 (d, 2H, J=7.8 Hz), 7.48 (dd, 2H, J=6.6, 3.3 Hz), 7.56 (dd, 2H, J=6.6, 3.3 Hz), 7.89 (dd, 1H, J=7.5, 6.3 Hz), 8.36 (d, 1H, J=8.1 Hz), 8.72 (d, 1H, J=6 Hz); 13C NMR (D2O) □ 20.46, 20.85, 24.19, 27.83, 30.23, 42.75, 46.91, 50.18, 56.56, 60.10, 63.05, 113.83, 126.02, 126.61, 127.24, 130.38, 130.52, 135.63, 137.64, 139.59, 140.88, 148.17, 150.92, 151.80, 169.57. ES-MS m/z 495 (M+H). Anal. Calcd. for C30H34N6O.3.1HBr.1.9H2O.0.3C4H10O: C, 46.73; H, 5.52; N, 10.48; Br, 30.89. Found: C, 46.79; H, 5.42; N, 10.42; Br, 30.73.
EXAMPLE: 124




AMD 9705: Preparation of (1H-Benzimidazol-2-ylmethyl)-[4-(pyrimidin-2-ylaminomethyl)-benzyl]-(5,6,7,8-tetrahydro-quinolin-8-yl)-amine (hydrobromide salt)
Preparation of 4-(pyrimidin-2-ylaminomethyl)-benzaldehyde
Using General Procedure B: Reaction of 4-hydroxymethylbenzaldehyde (4.05 g, 29.8 mmol) and 2-aminopyrimidine (1.43 g, 15.0 mmol) with NaBH(OAc)3 (9.11 g, 43.0 mmol) in CH2Cl2 (75 mL) and glacial acetic acid (3.5 mL) for 18 hours followed by purification of the crude material by column chromatography on silica gel (25:1 CH2Cl2—CH3OH) gave 1.50 g of a white solid. The solid (1.50 g) from above was dissolved in CH2Cl2 (75 mL), treated with activated MnO2 (6.10 g, 70.1 mmol) and stirred at room temperature overnight. The mixture was filtered through celite and the cake was washed with CH2Cl2. The solvent was removed from the filtrate under reduced pressure and the crude material was purified by column chromatography on silica gel (50:1 CH2Cl2—CH3OH) to afford the title compound (0.57 g, 18% from 2-aminopyrimidine) as a white solid. 1H NMR (CDCl3) □ 4.75 (d, 2H, J=6.3 Hz), 5.78 (br s, 1H), 6.58 (t, 1H, J=4.8 Hz), 7.51 (d, 2H, J=7.8 Hz), 7.85 (d, 2H, J=7.8 Hz), 8.28 (d, 2H, J=4.8 Hz), 9.99 (s, 1H);

    
    
        Using General Procedure B: Reaction of 4-(pyrimidin-2-ylaminomethyl)-benzaldehyde (0.142 g, 0.66 mmol) and (1-tert-butoxycarbonyl-1H-benzimidazol-2-ylmethyl)-(5,6,7,8-tetrahydro-quinolin-8-yl)-amine (0.171 g, 0.45 mmol) with NaBH(OAc)3 (0.230 g, 1.08 mmol) in CH2Cl2 (5 mL) for 44 hours followed by purification of the crude material by radial chromatography on silica gel (2 mm plate, 10:1 CH2Cl2—CH3OH, followed by 25:1:1 CH2Cl2—CH3OH—NH4OH) provided the desired tertiary amine (0.118 g, 45%) as a white solid.
    
    


Using General Procedure D: Conversion of the white solid (118 mg) to the hydrobromide salt with simultaneous removal of the BOC-protecting group, followed by re-precipitation of the intermediate solid from methanol/ether, gave AMD9705 (125 mg) as a white solid. 1H NMR (D2O) □ 1.82–1.97 (m, 1H), 2.20–2.32 (m, 2H), 2.39–2.48 (m, 1H), 3.04 (br s, 2H), 3.76 (d, 1H, J=12.3 Hz), 3.83 (d, 1H, J=12.3 Hz), 4.17 (s, 2H), 4.44 (d, 1H, J=16.5 Hz), 4.62 (d, 1H, J=16.5 Hz), 4.73–4.79 (m, 1H, overlaps with HOD), 6.96 (d, 2H, J=7.8 Hz), 7.01 (t, 2H, J=5.4 Hz), 7.14 (d, 2H, J=7.8 Hz), 7.41 (dd, 2H, J=3.0, 6.0 Hz), 7.54 (dd, 2H, J=3.0, 6.0 Hz), 7.92 (dd, 1H, J=7.5, 6.0 Hz), 8.39 (d, 1H, J=7.8 Hz), 8.50 (d, 1H, J=5.1 Hz), 8.74 (d, 1H, J=5.4 Hz); 13C NMR (D2O) □ 20.47, 20.90, 44.13, 50.24, 56.65, 63.21, 110.74, 113.74, 126.05, 126.48, 127.60, 130.44, 135.87, 136.91, 139.60, 140.95, 148.22, 150.93, 151.91; ES-MS m/z 476 (M+H). Anal. Calcd. for C29H29N7.3.0HBr.1.8H2O: C, 46.40; H, 4.78; N, 13.06; Br, 31.93. Found: C, 46.47; H, 4.79; N, 12.83; Br, 31.99.
EXAMPLE: 125




AMD9693: Preparation of {4-[(1H-Benzimidazol-2-ylamino)-methyl]-benzyl}-(1H-benzimidazol-2-ylmethyl)-(5,6,7,8-tetrahydro-quinolin-8-yl)-amine
Using General Procedure A: To a stirred solution of 4-{[(1H-benzimidazol-2-ylmethyl)-(5,6,7,8-tetrahydro-quinolin-8-yl)-amino]-methyl}-benzaldehyde (140 mg, 0.34 mmol) and 2-aminobenzimidazole (45 mg, 0.0.34 mmol) in MeOH (4 mL) was added NaBH3CN (64 mg, 1.1 mmol) and the mixture was stirred at room temperature for 20 hours. Purification of the crude yellow foam by column chromatography on silica gel (200:1:1—EtOAc:MeOH:NH4OH) followed by radial chromatography on silica gel (100:1:1—CH2Cl2:MeOH:NH4OH) afforded AMD9693 (26 mg, 15%) as a white solid. 1H NMR (CDCl3) δ 1.57–1.74 (m, 1H), 1.87–2.05 (m, 2H), 2.10–2.20 (m, 1H), 2.63–2.75 (m, 1H), 2.75–2.90 (m, 1H), 3.54 (s, 2H), 3.86 (d, 1H, J=16.8 Hz), 4.03–4.16 (m, 2H), 4.24–4.35 (m, 2H), 5.44 (br s, 1H), 6.88–6.91 (m, 4H), 7.10–7.19 (m, 7H), 7.42 (d, 1H, J=7.5 Hz), 7.54 (br s, 2H), 8.65 (d, 1H, J=4.2 Hz); 13C NMR (CDCl3) δ 21.16, 24.26, 29.10, 46.66, 48.40, 53.29, 60.62, 111.39 (br), 118.11 (br), 120.13, 121.81, 122.37, 127.22, 128.57, 133.86, 134.79, 137.41, 138.17, 143.78, 146.67, 155.56, 156.41, 157.20. ES-MS m/z 514.4 (M+H). Anal. Cald. for C32H31N7.0.8CH2Cl2.0.4C4H8O2: C, 66.98; H, 5.85; N, 15.90. Found: C, 67.14; H, 5.66; N, 15.87.
EXAMPLE: 126




AMD9704: Preparation of (1H-benzoimidazol-2-ylmethyl)-(4-phenylaminomethyl-benzyl)-(5,6,7,8-tetrahydro-quinolin-8-yl)-amine
Following the General Procedure A: 4-{[(1H-benzoimidazol-2-ylmethyl)-(5,6,7,8-tetrahydro-quinolin-8-yl)-amino]-methyl}-benzaldehyde (200 mg, 0.50 mmol) and aniline (46 uL, 0.50 mmol) were converted into the corresponding reductive amination product using the following quantities of reagents and solvents: sodium cyanoborohydride (47 mg, 0.75 mmol), MeOH (3 mL). The reaction time in this case was 18 h. The residue was taken up in MeOH (3 mL) and sodium borohydride (38 mg, 1.0 mmol) was added to reduce any unreacted starting material. After stirring 30 min, saturated aqueous sodium bicarbonate (5 mL) was added, then the phases were separated and the aqueous layer was extracted with CH2Cl2 (3×10 mL). The combined organic extracts were dried (MgSO4), and concentrated in vacuo. Purification of the crude material thus obtained by radial chromatography (silica gel, 1 mm plate, 50:2:1 CH2Cl2-MeOH—NH4OH) afforded 49 mg (22%) of AMD9704 as a white foam. 1H NMR (CDCl3) □ 1.68–1.72 (m, 1H), 2.02–2.09 (m, 2H), 2.25–2.27 (m, 1H), 2.71–2.75 (m, 1H), 2.83–2.87 (m, 1H), 3.74 (s, 2H), 3.91–3.93 (m, 1H), 3.97 (d, 1H, J=16 Hz), 4.10 (dd, 1H, J=9, 6 Hz), 4.16–4.23 (m, 3H), 6.59 (dd, 2H, J=9, 1 Hz), 6.71 (t, 1H, J=7 Hz), 7.12–7.24 (m, 7H), 7.38 (d, 2H, J=8 Hz), 7.43 (dd, 1H, J=8, 1 Hz), 7.51–7.53 (m, 1H), 7.64–7.67 (m, 1H), 8.71 (dd, 1H, J=5, 1 Hz); 13C NMR (CDCl3) □ 21.3, 23.4, 29.2, 47.9, 48.5, 53.6, 60.3, 110.9, 112.7, 117.3, 118.7, 121.3, 121.6, 122.2, 127.4, 128.8, 129.2, 134.6, 137.1, 138.3, 146.9, 148.1, 156.3, 157.4. ES-MS m/z 474 (M+H). Anal. Calcd. for C31H31N5.0.9H2O: C, 76.01; H, 6.75; N, 14.30. Found: C, 76.04; H, 6.57; N, 14.18.
EXAMPLE: 127




AMD9741: Preparation of (1H-benzimidazol-2-ylmethyl)-{4-[(1H-imidazol-2-ylamino)-methyl]-benzyl}-(5,6,7,8-tetrahydro-quinolin-8-yl)-amine
To a suspension of 2-aminoimidazole sulphate (150 mg, 0.57 mmol) in anhydrous MeOH (10 mL) was added excess K2CO3. After 18 hours the reaction mixture was diluted with CH2Cl2 (40 mL), filtered through Celite and the cake was washed with CH2Cl2. The filtrate was concentrated under reduced pressure to afford a brown syrup (150 mg) which was used without further purification in the next reaction.
Using General Procedure A: To a stirred solution of 4-{[(1H-benzimidazol-2-ylmethyl)-(5,6,7,8-tetrahydro-quinolin-8-yl)-amino]-methyl}-benzaldehyde (200 mg, 0.49 mmol) and the amine (41 mg, 0.49 mmol) from above in MeOH (5 mL) was added NaBH3CN (94.3 mg, 1.5 mmol) and the mixture was stirred at room temperature for 5 days. Purification of the crude yellow foam by column chromatography on silica gel (100:1:1—CH2Cl2:MeOH:NH4OH) afforded AMD9741 (26 mg, 15%) as a brown solid (22 mg, 10%). 1H NMR (CDCl3) δ 1.61–1.76 (m, 1H), 1.92–2.09 (m, 2H), 2.17–2.27 (m, 1H), 2.68–2.76 (m, 1H), 2.80–2.90 (m, 1H), 3.64 (s, 2H), 3.89 (d, 1H, J=16.5 Hz), 4.05–4.14 (m, 2H), 4.22 (s, 2H), 4.39 (br s, 1H), 6.54 (s, 2H), 7.06 (d, 2H, J=7.8 Hz), 7.15–7.20 (m, 3H), 7.25 (d, 2H, J=6.9 Hz), 7.43 (d, 1H, J=7.8 Hz), 7.54 (br s, 2H), 8.67 (d, 1H, J=4.5 Hz); 13C NMR (CDCl3) δ 19.22, 21.83, 27.12, 45.73, 46.41, 51.49, 58.49, 111.83, 112.90, 115.59, 119.64, 120.29, 125.33, 126.71, 132.76, 135.33, 135.86, 136.22, 144.75, 148.75, 154.19, 155.23. ES-MS m/z 464.3 (M+H). Anal. Calcd. for C28H29N7.1.4CH2Cl2: C, 60.62; H, 5.50; N, 16.83. Found: C, 60.53; H, 5.48; N, 16.94.
EXAMPLE: 128




AMD9458: Preparation of [4-(Pyridin-2-ylaminomethyl)-benzyl]-(5,6,7,8-tetrahydro-quinolin-8-yl)-amine (hydrobromide salt)
Preparation of [4-(Pyridin-2-ylaminomethyl)-phenyl]-methanol




Using general procedure B: Reaction of 4-hydroxymethyl-benzaldehyde (1.01 g, 7.42 mmol), 2-aminopyridine (697 mg, 7.42 mmol), acetic acid (0.5 mL) and sodium triacetoxyborohydride (3.2 g, 14.8 mmol) in THF (20 mL) at room temperature under N2 for 40 min., then one hour at 50° C., followed by purification of crude material using chromatography on silica gel (2:2:96 CH3OH—NH3 H2O—CH2Cl2), afforded the title compound (1.17 g, 74%) as white foam.
Preparation of 4-(Pyridin-2-ylaminomethyl)-benzaldehyde




To a solution of oxalyl chloride (0.9 ml, 10.32 mmol) in CH2Cl2 (15 ml) at −78° C. was added a solution of DMSO (1.5 ml, 21.11 mmol) in CH2Cl2 (10 ml) and the mixture allowed to stir for 20 min. at −78° C., after which [4-(Pyridin-2-ylaminomethyl)-phenyl]-methanol (1.1 g, 5.13 mmol) in CH2Cl2 (10 ml) was added dropwise. Stirring was continued for 2 hours and then Et3N (2.9 ml, 21.30 mmol) was added dropwise. The cooling bath was removed, stirring was continued for 3 h, and the mixture was diluted with 300 mL ethyl acetate, washed with sat. NaHCO3, brine and dried over Na2SO4. Evaporation of the solvent and purification of the residue by flash chromatography on silica gel, using 30% ethyl acetate in CH2Cl2, gave the title compound (335 mg, 31%) as a pure white solid.
Using general procedure B: Reaction of 4-(Pyridin-2-ylaminomethyl)-benzaldehyde (335 mg, 1.58 mmol), 5,6,7,8-Tetrahydro-quinolin-8-ylamine (235 mg, 1.58 mmol), acetic acid (0.2 mL) and sodium triacetoxyborohydride (1.0 g, 4.74 mmol) in THF (10 mL) at room temperature under N2 for 40 min., followed by purification of crude material using chromatography on silica gel (1:1:98 CH3OH—NH3 H2O—CH2Cl2), afforded the title compound (485 mg, 86%) as a white foam.
Using General Procedure D: Conversion of the foam from above (30 mg, 0.084 mmol) to the hydrobromide salt using an acetic acid/HBr solution, followed by re-precipitation of the salt from diethyl ether gave AMD9458 as a white solid. 1H NMR (D2O) {tilde over (1)}□□−2.07 (m, 2H), 2.30–2.36 (m, 2H), 2.88–3.07 (m, 2H), 4.40 (d, 1H, J=12.6 Hz), 4.50 (d, 1H, J=13.2 Hz), 4.64 (s, 2H), 6.88 (dd, 1H, J=6.8, 6.8 Hz), 7.00 (d, 1H, J=9 Hz), 7.45 (d, 2H, J=8.4 Hz), 7.53 (d, 2H, J=8.4 Hz), 7.68 (dd, 1H, J=5.7, 7.5 Hz), 7.77 (d, 1H, J=6.6 Hz), 7.87 (ddd, 1H, J=1.5, 5.7, 9 Hz), 8.09 (d, 1H, J=7.8 Hz), 8.57 (d, 1H, J=4.5 Hz); 13C NMR (D2O) □ 17.71, 24.43, 27.12, 45.23, 49.36, 55.32, 113.36, 126.37, 128.40, 130.43, 130.95, 135.53, 137.89, 144.20, 144.52, 145.94, 152.99; ES-MS m/z 345.2 (M+H); Anal. Calcd. for (C22H24N4).3.3(HBr).0.6(H2O).0.4(C4H10O): C, 43.48; H, 5.02; N, 8.59; Br, 40.45. Found: C, 43.29; H, 5.32; N, 8.69; Br, 40.82.
EXAMPLE: 129




AMD9496: Preparation of Benzimidazol-2-ylmethyl)-[4-(pyridin-2-ylaminomethyl) benzyl]-(5,6,7,8-tetrahydro-quinolin-8-yl)-amine (hydrobromide salt)
Using general procedure B: Reaction of 1-(2-Trimethylsilanyl-ethoxymethyl)-1H-benzimidazole-2-carbaldehyde (243 mg, 0.88 mmol), [4-(Pyridin-2-ylaminomethyl)-benzyl]-(5,6,7,8-tetrahydro-quinolin-8-yl)-amine (315 mg, 0.87 mmol), acetic acid (0.2 mL) and sodium triacetoxyborohydride (553 mg, 2.61 mmol) in THF (9 mL) at room temperature under N2 for 40 min., followed by purification of the crude material by chromatography on silica gel (1:1:98 CH3OH—NH3 H2O—CH2Cl2), afforded the title compound (315 mg, 60%) as a white foam.
Using general procedure F: Reaction of [4-(Pyridin-2-ylaminomethyl)-benzyl]-(5,6,7,8-tetrahydro-quinolin-8-yl)-[1-(2-trimethylsilanyl-ethoxymethyl)-1H-benzimidazol-2-ylmethyl]-amine (315 mg, 0.52 mmol), 6 N HCl solution (5 ml) at 50° C. for 3 h, followed by purification of crude material using chromatography on silica gel (1:1:98 CH3OH—NH3 H2O—CH2Cl2), afforded the title compound (215 mg, 87%) as a white foam.
Using General Procedure D: Conversion of the foam from above (50 mg, 0.11 mmol) to the hydrobromide salt using an acetic acid/HBr solution, followed by re-precipitation of the salt from diethyl ether gave AMD9496. 1H NMR (D2O) δ 1.77–1.90 (m, 1H), 2.14–2.26 (m, 2H), 2.35–2.40 (m, 1H), 2.96–2.98 (m, 2H), 3.67 (d, 1H, J=12.6 Hz), 3.75 (d, 1H, J=12.6 Hz), 4.02 (s, 2H), 4.38 (d, 1H, J=16.5 Hz), 4.56 (d, 1H, J=16.5 Hz), 4.68–4.74 (m, 1H), 6.76 (d, 1H, J=9.3 Hz), 6.84 (dd, 1H, J=6.75, 6.75 Hz), 6.91 (d, 2H, J=7.8 Hz), 7.10 (d, 2H, J=7.8 Hz), 7.32–7.37 (m, 2H), 7.47–7.51 (m, 2H), 7.69 (d, 1H, J=6.3 Hz), 7.79–7.87 (m, 2H), 8.31 (d, 1H, J=7.5 Hz), 8.70 (d, 1H, J=5.4 Hz); 13C NMR (D2O) δ 20.49, 20.92, 27.86, 44.65, 50.29, 56.57, 63.07, 112.95, 113.28, 113.80, 126.00, 126.41, 127.43, 130.59, 135.54, 135.97, 136.06, 139.71, 140.83, 144.59, 148.08, 150.94, 151.88, 152.59; ES-MS m/z 475.4 (M+H); Anal. Calcd. for (C30H30N6).3.0(HBr).1.8(H2O): C, 48.08; H, 4.92; N, 11.21; Br, 31.97. Found: C, 48.01; H, 4.91; N, 11.06; Br, 32.07.
EXAMPLE: 130




AMD9670: Preparation of (1H-Benzimidazol-2-ylmethyl)-[4-(5,8-dihydro-6H-[1,7]naphthylpyridine-7-ylmethyl)-benzyl]-(5,6,7,8-tetrahydroquinolin-8-yl)-amine (hydrobromide salt)
Preparation of N-benzyl-2-[2-(hydroxymethyl)-pyridin-3-yl]-acetamide




To a stirred solution of ethyl-2-[2-(acetoxymethyl)-pyridin-3-yl]-acetate (prepared from 2-methylnicotinic acid as described by Y. Sato et al., Chem. Pharm. Bull.; EN. 1960, 8, 427) (2.37 g, 10 mmol) in EtOH (50 mL) was added KOH (3 g, 53 mmol) and the mixture stirred at reflux overnight. The mixture was cooled, concentrated under reduced pressure and diluted with brine (5 mL) and CH2Cl2 (25 mL). The aqueous phase was extracted with CH2Cl2 (2×20 mL), the phases separated and the combined organic extracts dried (Na2SO4), filtered and concentrated to afford ethyl-2-[2-(hydroxymethyl)-pyridin-3-yl]-acetate (1.03 g, 52%).
To the product from above (97 mg, 0.5 mmol) was added benzylamine (107 mg, 1.0 mmol) and the resultant solution was heated at 150° C. for 8 h. The reaction was cooled, concentrated in vacuo and purified by chromatography on silica gel (CH2Cl2/MeOH, 10:1) to afford the title compound (105 mg, 88%). 1H NMR (CDCl3) 3.55 (s, 2H), 4.41 (d, 1H, J=5.7 Hz), 4.59 (br s, 1H (OH)), 4.75 (s, 2H), 6.04 (br s, 1H (NH)), 7.28 (m, 6H), 7.61 (d, 1H, J=5.8 Hz), 8.47 (d, 1H, J=4.9 Hz).
Preparation of 5,6,7,8-tetrahydro-[1,7]-naphthylpyridine




To a solution of N-benzyl-2-[2-(hydroxymethyl)-pyridin-3-yl]-acetamide (357 mg, 1.5 mmol) in THF (2 mL) was added borane in THF (5 mL of a 1.0 M solution, 5 mmol) and the mixture heated at 50° C. for 3 h. The reaction was cooled, quenched with MeOH (5 mL) and heated at 50° C. for 1 h. The resultant mixture was cooled, concentrated under reduced pressure, diluted with 3 N HCl (5 mL) and heated at 80° C. for 6 h. After cooling, an aqueous 15% NaOH solution was added until a basic pH (pH=13) was obtained and the mixture was extracted with CH2Cl2 (3×10 mL). The phases were separated and the combined organic fractions were dried (Na2SO4), concentrated under reduced pressure and purified by column chromatography on silica gel (CH2Cl2/MeOH/NH4OH, 100:10:1) to afford benzyl-2-[2-(hydroxymethyl)-pyridin-3-yl]-ethylamine (86 mg, 41%) as a yellow oil. 1H NMR (CDCl3) 2.75 (t, 2H, J=6.8 Hz), 2.88 (t, 2H, J=6.8 Hz), 4.75 (s, 2H), 7.18–7.34 (m, 6H), 7.50 (d, 1H, J=7.8 Hz), 8.43 (d, 1H, J=4.9 Hz). ES-MS m/z 243 (M+H).
To a stirred solution of triphenylphosphine (150 mg, 0.62 mmol) in CH2Cl2 (10 mL) 0° C. was added bromine (0.075 mL, 1.5 mmol) followed by a solution of benzyl-2-[2-(hydroxymethyl)-pyridin-3-yl]-ethylamine (150 mg, 0.62 mmol) in CH2Cl2 (5 mL) and the reaction stirred overnight at room temperature. The mixture was then concentrated under reduced pressure and purified by column chromatography on silica gel (CH2Cl2/MeOH, 20:1) to afford the desired benzyl-protected product (106 mg, 76%) as a white powder. 1H NMR (CDCl3) 3.14 (m, 4H), 4.09 (s, 2H), 4.15 (s, 2H), 7.13 (t, 1H, J=6.6 Hz), 7.19 (m, 3H), 7.36 (d, 1H, J=6.6 Hz), 7.46 (m, 2H), 8.35 (d, 1H, J=5.2 Hz). ES-MS m/z 225 (M+H).
To a solution of the solid from above (106 mg, 0.473 mmol) in MeOH (20 mL) and AcOH (5 mL) in a Parr bottle was added 10% palladium on carbon (106 mg) and the mixture hydrogenated at 50 psi hydrogen in a Parr hydrogenator for 16 h. The product mixture was filtered through celite and the solvent from the eluent removed in vacuo. The resultant residue was purified by column chromatography on silica gel (CH2Cl2/MeOH, 10:1) to afford the title compound (54 mg, 85%), 5,6,7,8-tetrahydro-[1,7]-naphthylpyridine, as a yellow crystalline solid. 1H NMR (CDCl3) 3.14 (t, 2H, J=6.8 Hz), 3.40 (t, 2H, J=6.8 Hz), 4.35 (s, 2H), 7.34 (dd, 1H, J=8.1, 5.2 Hz), 7.63 (d, 1H, J=8.1 Hz), 8.41 (d, 1H, J=5.2 Hz).
Using General Procedure A: To a solution of 5,6,7,8-tetrahydro-[1,7]-naphthylpyridine (40 mg, 0.3 mmol) and 4-{[(1H-Benzimidazol-2-ylmethyl)-(5,6,7,8-tetrahydro-quinolin-8-yl)-amino]-methyl}-benzaldehyde (70 mg, 0.141 mmol) in MeOH (8 mL) was added NaBH3CN (50 mg, 0.8 mmol) and the mixture stirred at room temperature for 16 h. Purification by column chromatography on silica gel (CH2Cl2/MeOH, 10:1) afforded the alkylated product (48 mg, 55%), (1H-N-t-butoxycarbonyl-benzimidazol-2-ylmethyl)-[4-(5,8-dihydro-6H-[1,7]naphthylpyridine-7-ylmethyl)-benzyl]-(5,6,7,8-tetrahydroquinolin-8-yl)-amine. 1H NMR (CDCl3) □.1.44 (s, 9H), 1.88 (m, 1H), 2.01 (m, 4H), 2.51 (t, 2H, J=6.8 Hz), 2.77 (m, 2H), 2.79 (t, 2H, J=6.8 Hz), 3.49 (m, 2H), 3.62 (m, 3H), 4.33 (t, 1H, J=5.8 Hz), 4.63 (s, 2H), 6.98 (m, 2H), 7.14–7.22 (m, 6H), 7.31 (m, 2H), 7.55 (d, 1H, J=8.1 Hz), 7.64 (d, 1H, J=5.8 Hz), 8.36 (d, 1H, J=4.8 Hz), 8.44 (d, 1H, J=5.1 Hz).
Using General Procedure D: Conversion of the material from above (34 mg, 0.055 mmol) to the hydrobromide salt with simultaneous removal of the BOC-protecting group, followed by re-precipitation of the intermediate solid from methanol/ether, gave AMD9670 (36 mg) as a white solid. 1H NMR (D2O) □ 1.88 (m, 1H), 2.21 (m, 2H), 2.43 (m, 1H), 3.01 (m, 2H), 3.13 (br s, 4H), 3.85 (dd, 2H, J=12.6, 12.3 Hz), 4.09 (s, 2H), 4.17 (s, 2H), 4.48 (d, 1H, J=17.4 Hz), 4.66 (d, 1H, J=17.4 Hz), 4.86 (m, 1H), 7.14 (d, 2H, J=8.1 Hz), 7.21 (dd, 2H, J=6.1, 3.3 Hz), 7.29 (d, 2H, J=8.1 Hz), 7.51 (dd, 2H, J=6.0, 3.1 Hz), 7.65 (dd, 1H, J=8.1, 5.4 Hz), 7.92 (dd, 1H, J=7.8, 5.7 Hz), 8.04 (d, 1H, J=7.8 Hz), 8.40 (d, 1H, J=7.8 Hz), 8.53 (d, 1H, J=4.2 Hz), 8.77 (d, 1H, J=5.1 Hz). 13C NMR (D2O) □ 20.97, 24.04, 27.85, 48.24, 50.33, 51.48, 57.22, 58.78, 63.41, 113.73 (2C), 125.69, 126.15, 126.53 (2C), 127.41, 130.04, 130.39, 131.00 (2C), 130.55, 131.76 (2C), 138.92, 139.70, 141.12, 142.64, 145.42, 148.34, 152.50, 156.69 ES-MS m/z 515 (M+H); Anal. Calcd. for (C33H34N6×4HBr×1.6H2O×1.4HOAc): C, 45.20; H, 4.96; N, 8.84; Br 33.60. Found: C, 45.45; H, 5.03; N, 8.86; Br, 33.26.
EXAMPLE: 131




AMD9407: Preparation of N-(2-pyridinylmethyl)-N′-[1H-benzimidazol-2-ylmethyl)]-N′-[trans-2-(N-phenylamino)cyclohexyl]-1,4-benzenedimethanamine (hydrobromide salt)
Preparation of 2-[N-(t-butyloxycarbonyl)]amino-cyclohexanone
To a suspension of trans-2-aminocyclohexanol hydrochloride (1.69 g, 11.1 mmol) and triethylamine (3.1 mL, 22.2 mmol) in THF (25 mL) was added di-tert-butyl dicarbonate (2.78 g, 12.7 mmol) and the mixture stirred at room temperature for 5 hours. The reaction was diluted with ethyl acetate (10 mL) and water (30 mL). The phases were separated and the aqueous phase washed with ethyl acetate (2×25 mL). The combined organic extracts were washed with brine (1×30 mL), dried (Na2SO4), filtered and concentrated under reduced pressure. The resultant white solid (2.39 g) was used without further purification in the next reaction.
To a suspension of the alcohol from above (0.620 g) and powdered 3 Å molecular sieves (0.550 g) in CH2Cl2 (7 mL) was added 4-methylmorpholine N-oxide (0.505 g, 4.32 mmol) and tetrapropylammonium perruthenate (0.070 g, 0.20 mmol) and the mixture stirred for 2 hours. The reaction was concentrated under reduced pressure and purified by column chromatography through a plug of silica gel (ethyl acetate) to afford the title compound (0.542 g, 88% over 2 steps) as a clear oil. 1H NMR (CDCl3) 1.44 (br s, 9H), 1.58–1.87 (m, 4H), 2.08–2.17 (m, 1H), 2.32–2.43 (m, 1H), 2.48–2.62 (m, 2H), 4.19–4.27 (m, 1H), 5.48 (br s, 1H, NH); 13C NMR (D2O) □ 23.85, 27.10, 27.65, 28.04, 35.59, 40.80, 58.85, 155.00, 207.30.
Preparation of trans-N-phenyl-cyclohexane-1,2-diamine
To a solution of 2-[N-(t-butyloxycarbonyl)]amino-cyclohexanone (0.785 g, 3.69 mmol, aniline (0.68 mL, 7.46 mmol) and glacial acetic acid (0.22 mL) in THF (10 mL) was added NaBH(OAc)3 (1.173 g, 5.53 mmol) and the mixture was stirred at 60□ C. overnight. The reaction was cooled to room temperature, diluted with CH2Cl2 (60 mL) and washed with saturated aqueous NaHCO3 (50 mL). The aqueous phase was washed with CH2Cl2 (2×25 mL) and the combined organic extracts dried (Na2SO4), filtered and concentrated under reduced pressure. Purification and separation of the resultant brown oil by flash chromatography on silica gel (Hexanes/EtOAc, 9:1) afforded the low polarity cis-N-phenyl-N′-(t-butyloxycarbonyl)-cyclohexane-1,2-diamine isomer (0.095 g, 9%) and the high polarity trans-N-phenyl-N′-(t-butyloxycarbonyl)-cyclohexane-1,2-diamine isomer (0.412 g, 39%), both as pale yellow solids.
The trans isomer from above (0.223 g, 0.77 mmol) was dissolved in CH2Cl2 (2 mL) and treated with trifluoroacetic acid (2 mL) and the mixture stirred overnight. The reaction was concentrated under reduced pressure then diluted with CH2Cl2 (45 mL) and 1 N NaOH (35 mL). The phases were separated and the aqueous phase was washed with CH2Cl2 (2×30 mL). The combined organic extracts were dried (Na2SO4), filtered and concentrated under reduced pressure to provide trans-N-phenyl-cyclohexane-1,2-diamine (0.138 g) as a yellow oil. 1H NMR (CDCl3) 1.21–1.36 (m, 4H), 1.45–1.55 (m, 3H), 1.73–1.76 (m, 2H), 1.97–2.01 (m, 1H), 2.12–2.16 (m, 1H), 2.52 (td, 1H, J=9.6, 2.7 Hz), 2.95 (td, 1H, J=9.6, 3.3 Hz), 6.66–6.72 (m, 3H), 7.17 (td, 2H, J=7.5, 1.8 Hz).
1-[[2-(trimethylsilyl)ethoxy]methyl]-benzimidazole-2-carboxaldehyde
To a stirred solution of benzimidazole (2.00 g, 16.9 mmol) in anhydrous DMF (25 mL) was added N,N-diisopropylethylamine (7.3 mL, 42.2 mmol) followed by 2-(trimethylsilyl)ethoxymethyl chloride (3.3 mL, 18.6 mmol) and the resultant solution was heated to 80□ C. for 4 hours. Purification of the crude brown oil through a plug of silica gel (CH2Cl2/MeOH, 19:1) provided the 1-(2-trimethylsilylethoxymethyl)-benzimidazole (3.19 g, 76%) as an orange oil. 1H NMR (CDCl3) −0.05 (s, 9H), 0.90 (t, 2H, J=9 Hz), 3.51 (t, 2H, J=9 Hz), 5.55 (s, 2H), 7.32–7.37 (m, 2H), 7.55 (br d, 1H, J=6 Hz), 7.83 (br d, 1H, J=6 Hz), 7.98 (s, 1H).
To a cold (−40□ C.), stirred solution of the 1-(2-trimethylsilylethoxymethyl)-benzimidazole (0.678 g, 2.73 mmol) in dry THF (10 mL) was added a 2.5 M solution of n-butyllithium in hexanes (1.4 mL, 3.5 mmol). The reaction mixture turned deep red. After 30 minutes, DMF (1.3 mL, 16.8 mmol) was added to the reaction mixture and the resultant solution was allowed to warm to room temperature overnight. After the usual work up, the resultant yellow oil was used without further purification in the reductive amination step. 1H NMR (CDCl3)) −0.05 (s, 9H), 0.90 (t, 2H, J=9 Hz), 3.56 (t, 2H, J=9 Hz), 6.05 (s, 2H), 7.43–7.53 (m, 2H), 7.66 (d, 1H, J=6 Hz), 7.95 (d, 1H, J=6 Hz), 10.13 (s, 1H).
Using General Procedure B: To a stirred solution of trans-N-phenyl-cyclohexane-1,2-diamine (0.137 g, 0.72 mmol) and 4-[[N-(-t-butoxycarbonyl)-N-(2-pyridinylmethyl)amino]methyl]benzaldehyde (0.239 g, 0.66 mmol) in CH2Cl2 (10 mL) was added NaBH(OAc)3 (0.229 g, 1.08 mmol) and the mixture was stirred at room temperature for 4.5 hours. Purification of the crude material by flash chromatography on silica gel (CH2Cl2/MeOH, 96:4) afforded the protected amine (0.198 g) as a yellow foam.
To a solution of the foam from above (0.198 g) and 1-[[2-(trimethylsilyl)ethoxy]methyl]-benzimidazole-2-carboxaldehyde (0.110 g, 0.40 mmol) in MeOH (4 mL) was added NaBH3CN (0.036 g, 0.57 mmol) and the mixture stirred at room temperature overnight. Purification of the crude material by flash chromatography on silica gel (CH2Cl2/MeOH, 98:2 followed by 96:4) afforded the desired benzimidazole derivative (0.211 g, 42% over 2 steps) as a pale yellow oil.
Simultaneous BOC and SEM Deprotection: A solution of the oil from above (0.211 g, 0.28 mmol) in 5 M HCl/THF (5:1, 12 mL) was stirred at 60□ C. for 4 hours. The reaction was cooled to room temperature, diluted with 10 N NaOH (15 mL, pH>10) and extracted with CH2Cl2 (3×25 mL). The combined organic layers were dried (Na2SO4), filtered and concentrated under reduced pressure. Purification of the crude brown oil by radial chromatography (2 mm plate, CH2Cl2/MeOH, 96:4) afforded the title compound (0.050 g, 34%) as a clear, colourless oil.
Using General Procedure D: The free base from above (0.050 g, 0.094 mmol) was converted to the hydrobromide salt with HBr(g) saturated MeOH (2 mL) to provide AMD9407 (0.080 g) as an off-white solid. 1H NMR (D2O) 1.21–1.61 (m, 3H), 1.61–1.78 (m, 2H), 1.87–.00 (m, 2H), 2.27–2.32 (m, 1H), 3.29 (td, 1H, J=10.5, 2.4 Hz), 3.85 (s, 2H), 3.85–3.98 (m, 2H), 4.21–4.41 (m, 2H), 4.26 (s, 2H), 4.62 (d, 1H, J=16.5 Hz), 7.07 (d, 2H, J=8.1 Hz), 7.31 (d, 2H, J=8.1 Hz), 7.35–7.39 (m, 2H), 7.46–7.52 (m, 4H), 7.58–7.63 (m, 3H), 7.76 (d, 1H, J=8.1 Hz), 7.81 (dd, 1H, J=7.8, 15.7 Hz), 8.30 (td, 1H, J=8.1, 1.5 Hz), 8.70 (d, 1H, J=5.7 Hz); 13C NMR (D2O) □ 23.67, 24.09, 24.48, 27.94, 48.45 (2 carbons), 50.62 (2 carbons), 62.23 (2 carbons), 113.88 (2 carbons), 124.06 (2 carbons), 126.63 (2 carbons), 126.96 (2 carbons), 129.93, 130.32 (2 carbons), 130.52 (2 carbons), 130.69, 130.91 (2 carbons), 130.98 (2 carbons), 132.87, 138.49, 144.19, 146.31, 147.25, 151.50. ES-MS m/z 531 (M+H). Anal. Calcd. for C34H38N6.4.1HBr.3.5H2O: C, 44.12; H, 5.35; N, 9.08; Br, 35.40. Found: C, 44.34; H, 5.28; N, 8.70; Br, 35.11.
EXAMPLE: 132




AMD9423: Preparation of N-(2-pyridinylmethyl)-N′-[cis-2-(N-phenylamino)cyclohexyl]-1,4-benzenedimethanamine (hydrobromide salt)
Preparation of cis-N-phenyl-cyclohexane-1,2-diamine
The cis-N-phenyl-N′-(t-butyloxycarbonyl)-cyclohexane-1,2-diamine isomer from above (0.095 g, 0.33 mmol) was dissolved in CH2Cl2 (2 mL) and treated with trifluoroacetic acid (2 mL) and the mixture stirred overnight. The reaction was worked up to afford the title compound (0.069 g) as a pale yellow solid. 1H NMR (CDCl3) 1.28–1.37 (m, 5H), 1.50–1.63 (m, 6H), 3.18 (br s, 1H), 3.42–3.45 (m, 1H), 6.63–6.70 (m, 3H), 7.16 (br t, 2H, J=7.5 Hz).
Using General Procedure B: To a stirred solution of cis-N-phenyl-cyclohexane-1,2-diamine (0.069 g) and 4-[[N-(-t-butoxycarbonyl)-N-(2-pyridinylmethyl)amino]methyl]benzaldehyde (PCT International Application PCT/CA00/00321) (0.239 g, 0.66 mmol) in CH2Cl2 (5 mL) was added NaBH(OAc)3 (0.112 g, 0.53 mmol) and the mixture stirred at room temperature for 2 hours. Purification of the crude material by flash chromatography on silica gel (CH2Cl2/MeOH, 96:4) afforded the protected amine (0.128 g, 78% over 2 steps) as a clear oil.
Using General Procedure D: The oil from above (0.050 g, 0.10 mmol) was converted to the hydrobromide salt with simultaneous deprotection of the BOC group to provide AMD9423 (0.071 g) as a white solid. 1H NMR (D2O) 1.47–1.58 (m, 4H), 1.70–1.91 (m, 4H), 3.48–3.55 (m, 1H), 3.96–3.98 (m, 1H), 4.19 (d, 1H, J=13.2 Hz), 4.31 (d, 1H, J=13.2 Hz), 4.37 (s, 2H), 4.65 (s, 2H), 6.74–6.81 (m, 3H), 7.19 (t, 2H, J=7.8 Hz), 7.39 (s, 4H), 8.00 (t, 1H, J=6.9 Hz), 8.05 (d, 1H, J=8.1 Hz), 8.52 (t, 1H, J=7.8 Hz), 8.80 (d, 1H, J=5.8 Hz); 13C NMR (D2O) □ 20.08, 22.34, 24.16, 27.22, 47.69, 48.48, 48.99, 51.61, 57.02, 114.95 (2 carbons), 119.37, 127.97, 128.25, 130.11 (2 carbons), 131.06 (2 carbons), 131.20 (2 carbons), 131.43, 132.67, 144.50, 145.78, 146.29, 146.91. ES-MS m/z 401 (M+H). Anal. Calcd. for C26H32N4.4.3HBr.3.0H2O.0.7C4H10O: C, 40.49; H, 5.82; N, 6.56; Br, 40.21. Found: C, 40.60; H, 5.52; N, 6.43; Br, 39.97.
EXAMPLE: 133




AMD9469: Preparation of N-(2-pyridinylmethyl)-N′-[trans-2-[(pyridin-2-ylmethyl)amino]cyclohexyl]-1,4-benzenedimethanamine (hydrobromide salt)
Preparation of trans-N-(t-butoxycarbonyl)-N′-pyridin-2-ylmethyl-cyclohexane-1,2-diamine
Using General Procedure B: To a solution of 2-[N-(t-butyloxycarbonyl)]amino-cyclohexanone (117 mg, 0.55 mmol) and 2-(aminomethyl)pyridine (0.065 mL, 0.63 mmol in CH2Cl2 (5 mL) was added NaBH(OAc)3 (167 mg, 0.79 mmol) and the mixture stirred at room temperature overnight. The resultant crude pale yellow oil (168 mg) was used without further purification in the next step. 1H NMR (CDCl3) 1.08–1.22 (m, 4H), 1.43 (s, 9H), 1.61–1.67 (m, 2H), 2.04–2.16 (m, 2H), 2.29 (td, 1H, J=9, 3 Hz), 2.31 (br s, 1H, NH), 3.27–3.33 (m, 1H), 3.85 (d, 1H, J=0.15 Hz), 4.02 (d, 1H, J=15 Hz), 5.37 (br s, 1H, NH), 7.14 (dd, 1H, J=9, 6 Hz), 7.28 (d, 1H, J=9 Hz), 7.59 (td, 1H, J=9, 3 Hz), 8.53 (d, 1H, J=3 Hz).
To a solution of the oil from above (168 mg) and N,N-diisopropylethylamine (0.15 mL, 0.87 mmol) in CH2Cl2 (2.5 mL) was added benzylchloroformate (0.10 mL, 0.70 mmol) and the mixture stirred at room temperature for 4 hours. The reaction was diluted with CH2Cl2 (15 mL) and saturated aqueous NaHCO3 (15 mL) and the phases separated. The aqueous phase was washed with CH2Cl2 (2×10 mL) and the combined organic extracts were dried (Na2SO4), filtered and concentrated under reduced pressure. The resultant crude yellow oil (256 mg) was used without further purification in the next step.
BOC Deprotection: The oil from above (256 mg) was dissolved in CH2Cl2 (2 mL) and treated with trifluoroacetic acid (2 mL) and the mixture stirred for 40 minutes. The resultant crude orange oil (188 mg) was used without further purification in the next step.
Using General Procedure B: To a solution of the oil from above (188 mg) and 4-[[N-(t-butoxycarbonyl)-N-(2-pyridinylmethyl)amino]methyl]benzaldehyde (190 mg, 0.58 mmol) in CH2Cl2 (4 mL) was added NaBH(OAc)3 (175 mg, 0.83 mmol) and the mixture stirred at room temperature overnight. Purification of the crude material by flash chromatography on silica gel (CH2Cl2/MeOH/NH4OH, 96:4:0 followed by 95:4:1) afforded the desired amine (270 mg, 76% over 4 steps) as a clear oil.
BOC Deprotection: The oil from above (136 mg, 0.21 mmol) was dissolved in CH2Cl2 (2 mL) and treated with trifluoroacetic acid (2 mL) and the mixture stirred overnight. Purification of the resultant crude oil by flash chromatography on silica gel (CH2Cl2/MeOH/NH4OH, 95:4:1) afforded the desired amine (94 mg) as a clear oil.
CBz Deprotection: To a solution of the oil from above (94 mg) in MeOH (5 mL) was added palladium on activated carbon (10%, 14 mg) and the mixture was hydrogenated (1 atmosphere) at room temperature overnight. The reaction mixture was filtered through celite and the cake was washed with methanol. The combined filtrates were evaporated under reduced pressure and the resultant clear oil was purified by radial chromatography on silica gel (1 mm plate, 50:1:1 CH2Cl2/MeOH/NH4OH) to afford the free amine (34 mg, 39% over 2 steps) as a clear oil.
Using General Procedure D: The free base from above (34 mg, 0.082 mmol) was converted to the hydrobromide salt with HBr(g) saturated MeOH (2 mL) to provide AMD9469 (62 mg) as a pale yellow solid. 1H NMR (D2O) 1.18–1.30 (m, 3H), 1.47–1.54 (m, 1H), 1.79–1.84 (m, 2H), 2.31–2.36 (m, 2H), 2.86–2.92 (m, 1H), 3.20 (td, 1H, J=10.8, 3.6 Hz), 4.18 (d, 1H, J=16.8 Hz), 4.29 (d, 1H, J=13.5 Hz), 4.43–4.49 (m, 4H), 4.65 (s, 2H), 7.57 (s, 4H), 7.78–7.87 (m, 2H), 7.92 (t, 1H, J=6.9 Hz), 7.98 (d, 1H, J=7.8 Hz), 8.36–8.46 (m, 3H), 8.78 (d, 1H, J=5.4 Hz); 13C NMR (D2O) □ 23.64, 23.87, 27.23, 30.15, 47.17, 47.79, 48.36, 51.45, 58.69, 60.14, 125.99, 126.22, 127.47, 127.63, 131.08 (2 carbons), 131.35 (2 carbons), 131.85, 133.07, 142.30, 145.47, 145.55, 145.88, 146.58, 153.84. ES-MS m/z 416 (M+H). Anal. Calcd. for C26H33N5.5.2HBr.2.6H2O: C, 35.36; H, 4.95; N, 7.93; Br, 47.05. Found: C, 35.29; H, 5.02; N, 7.63; Br, 47.24.
EXAMPLE: 134




AMD9470: Preparation of N-(2-pyridinylmethyl)-N′-[cis-2-[(N-pyridin-2-ylmethyl)amino]cyclohexyl]-1,4-benzenedimethanamine (hydrobromide salt)
Preparation of trans-2-[N-(t-butoxycarbonyl)amino]-1-methanesulfonyloxycyclohexane
To a suspension of trans-2-aminocyclohexanol hydrochloride (4.95 g, 32.6 mmol) and triethylamine (10 mL, 71.7 mmol) in THF (75 mL) was added di-tert-butyl dicarbonate (8.25 g, 37.8 mmol) and the mixture stirred at room temperature for 1.5 hours. The reaction was diluted with ethyl acetate (75 mL) and water (25 mL) and the phases separated. The aqueous phase was washed with ethyl acetate (3×25 mL) and the combined organic extracts were washed with brine (3×30 mL), dried (MgSO4), filtered and concentrated under reduced pressure to give the Boc-protected amine (8.00 g) as a white solid.
To a stirred solution of trans-2-[N-(t-butoxycarbonyl)aminocyclohexanol (8.00 g, 37.2 mmol) and triethylamine (8.0 mL, 57.4 mmol) in CH2Cl2 (100 mL) at −78° C. was added methanesulfonyl chloride (3.5 mL, 45.2 mmol) dropwise and the mixture stirred for 10 minutes. The reaction was warmed to room temperature and stirred for another 40 minutes. The mixture was then diluted with water (10 mL) and brine (15 mL) and the phases separated. The organic layer was washed with brine (2×25 mL), dried (Na2SO4), filtered and concentrated to give the crude mesylate (11.04 g) as a white solid. 1H NMR (CDCl3) 1.26–1.37 (m, 3H), 1.44 (s, 9H), 1.59–1.69 (m, 2H), 1.70–1.79 (m, 1H), 2.10–2.21 (m, 2H), 3.03 (s, 3H), 3.58–3.61 (m, 1H), 4.44 (dt, 1H, J=9, 3 Hz), 4.68 (br s, 1H, NH).
Preparation of cis-1-[N-(t-butoxycarbonyl)]-cyclohexane-1,2-diamine
To a solution of the mesylate from above (11.04 g) in DMF (125 mL) was added sodium azide (15.45 g, 237.7 mmol) and the mixture stirred at 80° C. for 16 hours. The reaction was cooled to room temperature, concentrated under reduced pressure and the resultant residue diluted with ethyl acetate (100 mL), water (10 mL) and brine (15 mL). The phases were separated and the organic phase was washed with brine (3×25 mL), dried (MgSO4), filtered and concentrated to give the crude azide (6.17 g) as a yellow oil. Purification and separation of the crude product by flash chromatography on silica gel (Hexanes/ethyl acetate, 10:1) afforded the cis azide (2.17 g, 28% over 3 steps) and trans azide (2.20 g, 28% over 3 steps) both as white solids. cis-1-[N-(t-butoxycarbonyl)]-cyclohexane-1,2-diamine: 1H NMR (CDCl3) □1.27–1.37 (m, 3H), 1.44 (s, 9H), 1.58–1.73 (m, 3H), 1.94–2.01 (m, 2H), 3.56–3.63 (m, 1H), 3.92–3.95 (m, 1H), 4.72 (br s, 1H, NH). 13C NMR (CDCl3) □ 18.36, 23.03, 26.38, 27.03, 27.39, 49.77, 60.28, 78.24, 153.73. ES-MS m/z 263 (M+Na). trans-1-[N-(t-butoxycarbonyl)]-cyclohexane-1,2-diamine: 1H NMR (CDCl3) 1.19–1.39 (m, 3H), 1.46 (s, 9H), 1.64–1.78 (m, 3H), 2.02–2.07 (m, 2H), 3.08–3.13 (m, 1H), 3.36–3.42 (m, 1H), 4.50 (br s, 1H, NH). 13C NMR (CDCl3) □ 24.44, 24.68, 28.76, 31.06, 32.66, 54.27, 64.79, 80.08, 155.75. ES-MS m/z 263 (M+Na).
To a solution of the cis azide from above (2.12 g, 8.83 mmol) in MeOH (44 mL) was added palladium on activated carbon (10%, 227 mg) and the mixture was hydrogenated (30 psi) at room temperature for 17.5 hours. The reaction mixture was filtered through celite and the cake was washed with methanol. The combined filtrates were evaporated under reduced pressure to afford the title compound as a clear, colourless oil (1.85 g, 98%). 1H NMR (CDCl3) 1.41–1.68 (m, 10H), 1.45 (s, 9H), 2.98–3.00 (m, 1H), 3.57–3.59 (m, 1H), 5.00 (br s, 1H, NH).
Using General Procedure B: To a solution of cis-1-[N-(t-butoxycarbonyl)]-cyclohexane-1,2-diamine (0.79 g, 3.69 mmol) and 2-pyridinecarboxaldehyde (0.35 mL, 3.68 mmol) in CH2Cl2 (20 mL) was added NaBH(OAc)3 (0.036 g, 0.57 mmol) and the mixture stirred at room temperature overnight. The resultant crude oil was used without further purification in the next step. 1H NMR (CDCl3) 1.35–1.51 (m, 4H), 1.44 (s, 9H), 1.54–1.64 (m, 3H), 2.01–2.04 (m, 2H), 2.75–2.79 (m, 1H), 3.66–3.70 (m, 1H), 3.87 (d, 1H, J=15 Hz), 3.96 (d, 1H, J=15 Hz), 5.42 (br s, 1H, NH), 7.16 (dd, 1H, J=9, 6 Hz), 7.30 (d, 1H, J=9 Hz), 7.61 (td, 1H, J=9, 3 Hz), 8.56 (d, 1H, J=3 Hz).
CBz Protection: To a solution of the oil from above and N,N-diisopropylethylamine (0.96 mL, 5.52 mmol) in CH2Cl2 (10 mL) was added benzylchloroformate (0.64 mL, 4.48 mmol) and the mixture was stirred at room temperature for 3 hours. The reaction was diluted with CH2Cl2 (15 mL) and brine (25 mL) and the phases separated. The aqueous phase was washed with CH2Cl2 (2×20 mL) and the combined organic extracts were dried (Na2SO4), filtered and concentrated under reduced pressure. Purification of the crude product by flash chromatography on silica gel (CH2Cl2/MeOH, 97:3) afforded the di-protected diamine (1.44 g, 89% over 2 steps) as an orange oil.
BOC Deprotection: The oil from above (1.44 g, 3.28 mmol) was dissolved in CH2Cl2 (2 mL) and treated with trifluoroacetic acid (2 mL) and the mixture stirred overnight. The usual work-up afforded an orange oil (1.17 g) which was use without further purification in the next reaction.
Using General Procedure B: To a solution of the oil from above (296 mg) and 4-[[N-(t-butoxycarbonyl)-N-(2-pyridinylmethyl)amino]methyl]benzaldehyde (322 mg, 0.89 mmol) in CH2Cl2 (10 mL) was added NaBH(OAc)3 (280 mg, 1.32 mmol) and the mixture stirred at room temperature overnight. Purification of the crude material by flash chromatography on silica gel (CH2Cl2/MeOH, 96:4) afforded the desired amine (350 mg, 62% over 2 steps) as a clear oil.
CBz deprotection: To a solution of the oil from above (160 mg) in MeOH (3 mL) was added palladium on activated carbon (10%, 30 mg) and the mixture was hydrogenated (1 atmosphere) at room temperature for 3.5 hours. The reaction mixture was filtered through celite and the cake was washed with methanol. The combined filtrates were evaporated under reduced pressure and the resultant clear oil was purified by radial chromatography on silica gel (1 mm plate, 95:4:1 CH2Cl2/MeOH/NH4OH) to afford the free amine (80 mg, 63%) as a clear oil.
Using General Procedure D: The free base from above (80 mg, 0.16 mmol) was converted to the hydrobromide salt with simultaneous deprotection of the BOC group using HBr(g) saturated MeOH (2 mL) to provide AMD9470 (144 mg) as a grey solid. 1H NMR (D2O) 11.38–1.65 (m, 5H), 1.75–1.79 (m, 1H), 1.95–2.01 (m, 2H), 3.30–3.34 (m, 1H), 3.42–3.48 (m, 1H), 4.04 (d, 1H, J=17.4 Hz), 4.28 (d, 1H, J=13.5 Hz), 4.37 (d, 1H, J=13.5 Hz), 4.42 (s, 2H), 4.49 (d, 1H, J=17.4 Hz), 4.67 (s, 2H), 7.54 (s, 4H), 7.89–8.04 (m, 4H), 8.45–8.52 (m, 2H), 8.61 (d, 1H, J=5.4 Hz), 8.80 (d, 1H, J=5.4 Hz); 13C NMR (D2O) □ 18.74, 23.04, 24.14, 26.51, 47.86, 48.13, 48.22, 51.47, 53.90, 58.63, 126.09, 126.33, 127.67, 127.88, 131.29 (4 carbons), 131.74, 133.04, 140.90, 145.11, 146.08, 146.26, 146.91, 155.12. ES-MS m/z 416 (M+H). Anal. Calcd. for C26H33N5.4.7HBr.2.3H2O: C, 37.30; H, 5.09; N, 8.36; Br, 44.85. Found: C, 37.41; H, 5.00; N, 8.19; Br, 44.72.
EXAMPLE: 135




AMD9526: Preparation of N-(2-pyridinylmethyl)-N′-[cis-2-[(1H-imidazol-2-ylmethyl)amino]cyclohexyl]-1,4-benzenedimethanamine (hydrobromide salt)
Cis-1-[N-(t-butoxycarbonyl)]-cyclohexane-1,2-diamine (540 mg, 2.52 mmol) was stirred with 2-imidazole carboxaldehyde (250 mg, 2.60 mmol) in methanol (10 mL) overnight. Palladium on activated carbon (10%, 76 mg) was then added and the mixture was hydrogenated (1 atmosphere) at room temperature for 3 hours. The reaction mixture was filtered through celite and the cake was washed with methanol. The combined filtrates were evaporated under reduced pressure to give a pale yellow oil (785 mg) which was used without further purification in the next reaction.
Using General Procedure B: To a solution of the oil from above (115 mg) and 4-[[N-(t-butoxycarbonyl)-N-(2-pyridinylmethyl)amino]methyl]benzaldehyde (221 mg, 0.68 mmol) in CH2Cl2 (5 mL) was added NaBH(OAc)3 (178 mg, 0.84 mmol) and the mixture stirred at room temperature overnight. Purification of the crude material by flash chromatography on silica gel (CH2Cl2/MeOH/NH4OH, 96:4:0 then 95:4:1) afforded the product (135 mg, 45%) as a clear foam.
Using General Procedure D: The product from above (135 mg, 0.27 mmol) was converted to the hydrobromide salt (156 mg) with simultaneous deprotection of the Boc group. The salt was then dissolved in MeOH (1 mL) and diluted with 10 N NaOH (2 mL) and CH2Cl2 (10 mL). The aqueous phase was washed with CH2Cl2 (3×10 mL) and the combined organic layers dried (Na2SO4), filtered and concentrated under reduced pressure. Purification of the resultant yellow oil (76 mg) by radial chromatography on silica gel (1 mm plate, 40:1:1 CH2Cl2/MeOH/NH4OH) afforded pure free base (52 mg, 48%) as a colourless oil.
Using General Procedure D: Conversion of the oil from above (77 mg, 0.14 mmol) to the hydrobromide salt followed by re-precipitation of the intermediate solid from methanol/ether gave AMD9526 (89 mg, 80%) as a white solid. 1H NMR (D2O) 1.35–1.61 (m, 5H), 1.70–1.74 (m, 1H), 1.85–1.90 (m, 2H), 3.20–3.22 (m, 1H), 3.33–3.40 (m, 1H), 3.84 (d, 1H, J=16.5 Hz), 4.20–4.33 (m, 3H), 4.42 (s, 2H), 4.66 (s, 2H), 7.34 (s, 2H), 7.52 (s, 4H), 7.96 (t, 1H, J=6.9 Hz), 8.02 (d, 1H, J=8.1 Hz), 8.48 (td, 1H, J=7.8, 0.9 Hz), 8.79 (d, 1H, J=5.4 Hz); 13C NMR (D2O) □ 18.82, 22.91, 24.19, 26.30, 41.93, 48.07, 48.12, 51.50, 53.26, 58.28, 119.08 (2 carbons), 127.73, 127.96, 131.26 (4 carbons), 131.73, 133.01, 144.99, 146.17, 146.25, 146.89. ES-MS m/z 405 (M+H). Anal. Calcd. for C24H32N6.4.9HBr.3.6H2O: C, 33.29; H, 5.13; N, 9.71; Br, 45.22. Found: C, 33.46; H, 5.23; N, 9.53; Br, 45.01.
EXAMPLE: 136




AMD9527: Preparation of 2-{[4-([2-[(pyridin-2-ylmethyl)-amino]-cyclohexylamino]-methyl)-benzylamino]-methyl}-pyridin-3-ol (hydrobromide salt)
Preparation of (4-hydroxymethyl-benzyl)-(3-hydroxy-pyridin-2-ylmethyl)-carbamic acid tert-butyl ester




Using General Procedure B: (4-Aminomethyl-phenyl)-methanol (1.20 g, 8.75 mmol), 3-hydroxy-pyridine-2-carbaldehyde (1.18 g, 9.58 mmol), acetic acid (0.50 mL, 8.7 mmol), and NaBH(OAc)3 (5.60 g, 26.4 mmol) were reacted for 1 hour. Standard work-up gave a yellow foam that was used in the next step without further purification.
A solution of the crude yellow foam and di-t-butyl dicarbonate (2.3 g, 11 mmol) in THF (34 mL) was stirred at room temperature for 1 hour then concentrated. Purification of the crude material on silica gel (60% EtOAc/hexanes) gave the title compound as an orange foam (1.39 g, 46%). 1H NMR (CDCl3) □ 1.47 (s, 9H), 4.48 (s, 2H), 4.51 (s, 2H), 4.70 (d, 2H, J=6.0 Hz), 7.16 (dd, 1H, J=8.1, 4.5 Hz), 7.26 (m, 3H), 7.34 (d, 2H, J=8.1 Hz), 8.05 (dd, 1H, J=4.5, 1.2 Hz), 9.69 (s, 1H).
(4-Formyl-benzyl)-(3-hydroxy-pyridin-2-ylmethyl)-carbamic acid tert-butyl ester
A solution of (4-hydroxymethyl-benzyl)-(3-hydroxy-pyridin-2-ylmethyl)-carbamic acid tert-butyl ester (0.99 g, 2.9 mmol) in CH2Cl2 (14 mL) was stirred at room temperature with a suspension of 85% MnO2 (3.0 g, 29 mmol) for 15 hours. The catalyst was removed by filtration, and the filtrate was concentrated to give orange crystals (818 mg, 83%). 1H NMR (CDCl3) □ 1.44 (s, 9H), 4.54 (s, 2H), 4.61 (s, 2H), 7.17 (dd, 1H, J=8.1, 4.5 Hz), 7.26 (dd, 1H, J=8.1, 1.5 Hz), 7.37 (d, 2H, J=8.1 Hz), 7.84 (d, 2H, J=8.1 Hz), 8.03 (dd, 1H, J=4.5, 1.2 Hz), 9.55 (s, 1H), 10.00 (s, 1H).
(3-Hydroxy-pyridin-2-ylmethyl)-[4-([2-[(pyridin-2-ylmethyl)-amino]-cyclohexylamino]-methyl)-benzyl]-carbamic acid tert-butyl ester




Using General Procedure B: (2-Amino-cyclohexyl)-pyridin-2-ylmethyl-carbamic acid benzyl ester (198 mg, 0.583 mmol), (4-formyl-benzyl)-(3-hydroxy-pyridin-2-ylmethyl)-carbamic acid tert-butyl ester (200 mg, 0.584 mmol), acetic acid (0.033 mL, 0.58 mmol), and NaBH(OAc)3 (371 mg, 1.75 mmol) in dichloromethane were reacted for 2.5 hours. The crude yellow oil was filtered through silica gel using 100:3:0.2 CH2Cl2/MeOH/NH4OH to give a colourless foam (229 mg).
A solution of the crude material (224 mg) in MeOH (4 mL) was stirred at room temperature with a suspension of 10% Pd/C (25 mg, 0.023 mmol) under hydrogen atmosphere (1 atm) for 70 hours. The catalyst was removed by filtration, and the filtrate was concentrated. Purification of the crude material on silica gel (10% MeOH/CH2Cl2 and 30:5:1 CH2Cl2/MeOH/NH4OH) gave the title compound as a colourless oil (40 mg, 13%). 1H NMR (CDCl3) δ 1.34 (m, 4H), 1.47 (s, 9H), 1.70 (m, 4H), 2.77 (m, 2H), 3.62–3.90 (m, 4H), 4.46 (s, 2H), 4.48 (s, 2H), 7.13–7.31 (m, 8H), 7.63 (m, 1H), 8.06 (dd, 1H, J=4.5, 1.4 Hz), 8.52 (d, 1H, J=4.5 Hz), 9.74 (br s, 1H).
Using General Procedure D: (3-Hydroxy-pyridin-2-ylmethyl)-[4-({2-[(pyridin-2-ylmethyl)-amino]-cyclohexylamino}-methyl)-benzyl]-carbamic acid tert-butyl ester (40 mg, 0.075 mmol) was treated with saturated hydrogen bromide/acetic acid to provide AMD9527 as a colourless solid (60 mg, 91%). 1H NMR (D2O) 1.34–1.78 (m, 6H), 1.99 (m, 2H), 3.31 (m, 1H), 3.42 (m, 1H), 4.02 (d, 1H, J=17.4 Hz), 4.29 (m, 2H), 4.38 (s, 2H), 4.46 (d, 1H, J=17.4 Hz), 4.58 (s, 2H), 7.49 (m, 4H), 7.82–7.98 (m, 4H), 8.27 (dd, 1H, J=5.4, 1.2 Hz), 8.46 (m, 1H), 8.59 (d, 1H, J=5.7. Hz); 13C NMR (D2O) □ 18.73, 23.05, 24.13, 26.53, 44.10, 47.87, 48.18, 51.40, 53.87, 58.62, 126.06, 126.31, 129.42, 131.18, 131.65, 132.74, 133.00, 134.89, 140.88, 146.89, 155.18, 155.88. ES-MS m/z 432 (M+H). Anal Calcd for (C26H33N5O) 4.8(HBr) 3.4(H2O): C, 35.44; H, 5.10; N, 7.95; Br, 43.52. Found: C, 35.50; H, 5.01; N, 7.84; Br, 43.55.
The following examples (137–204) were prepared by the reaction of commercially available aldehydes/ketones with N-(1H-benzimidazol-2-ylmethyl)-N-(5,6,7,8-tetrahydro-8-quinolinyl)-1,4-benzenedimethanamine (AMD9381) using a reductive amination procedure with sodium cyanoborohydride in methanol/acetic acid, in a similar manner to the procedures described above:














Example 137




(1H-Benzoimidazol-2-ylmethyl)-(4-{[(pyridin-3-ylmethyl)-amino]-methyl}-benzyl)-(5,6,7,8-tetrahydro-quinolin-8-yl)-amine


 


Example 138




(1H-Benzoimidazol-2-ylmethyl)-(4-{[(pyridin-4-ylmethyl)-amino]-methyl}-benzyl)-(5,6,7,8-tetrahydro-quinolin-8-yl)-amine


 


Example 139




(1H-Benzoimidazol-2-ylmethyl)-(4-{[(2-chloro-quinolin-3-ylmethyl)-amino]-methyl}-benzyl)-(5,6,7,8-tetrahydro-quinolin-8-yl)-amine


 


Example 140




(1H-Benzoimidazol-2-ylmethyl)-(4-{[(quinolin-4-ylmethyl)-amino]-methyl}-benzyl)-(5,6,7,8-tetrahydro-quinolin-8-yl)-amine


 


Example 141




(1H-Benzoimidazol-2-ylmethyl)-[4-({[2,5-dimethyl-1-(3-trifluoromethyl-phenyl)-1H-pyrr+C9ol-3-ylmethyl]-amino}-methyl)-benzyl]-(5,6,7,8-tetrahydro-quinolin-8-yl)-amine


 


Example 142




(1H-Benzoimidazol-2-ylmethyl)-(4-{[(3,5-dimethyl-1-phenyl-1H-pyrazol-4-ylmethyl)-amino]-methyl}-benzyl)-(5,6,7,8-tetrahydro-quinolin-8-yl)-amine


 


Example 143




(1H-Benzoimidazol-2-ylmethyl)-(4-{[(3-methyl-benzo[b]thiophen-2-ylmethyl)-amino]-methyl}benzyl)-(5,6,7,8-tetrahydro-quinolin-8-yl)-amine


 


Example 144




(1H-Benzoimidazol-2-ylmethyl)-(4-{[(1-benzyl-1H-indol-3-ylmethyl)-amino]-methyl}-benzyl)-(5,6,7,8-tetrahydro-quinolin-8-yl)-amine


 


Example 145




(1H-Benzoimidazol-2-ylmethyl)-(4-{[(quinolin-3-ylmethyl)-amino]-methyl}-benzyl)-(5,6,7,8-tetrahydro-quinolin-8-yl)-amine


 


Example 146




(1H-Benzoimidazol-2-ylmethyl)-(4-{[(1-methyl-1H-indol-3-ylmethyl)-amino]-methyl}-benzyl)-(5,6,7,8-tetrahydro-quinolin-8-yl)-amine


 


Example 147




(1H-Benzoimidazol-2-ylmethyl)-{4-[(1-pyridin-3-yl-ethylamino)-methyl]-benzyl}-(5,6,7,8-tetrahydro-quinolin-8-yl)-amine


 


Example 148




(1H-Benzoimidazol-2-ylmethyl)-[4-({[5-(2-chloro-5-trifluoromethyl-phenyl)-furan-2-ylmethyl]-amino}-methyl)-benzyl]-(5,6,7,8-tetrahydro-quinolin-8-yl)-amine


 


Example 149




(1H-Benzoimidazol-2-ylmethyl)-(4-{[(1-oxy-pyridin-4-ylmethyl)-amino]-methyl}-benzyl)-(5,6,7,8-tetrahydro-quinolin-8-yl)-amine


 


Example 150




(1H-Benzoimidazol-2-ylmethyl)-(4-{[1-(1H-indol-2-yl)-ethylamino]-methyl}-benzyl)-(5,6,7,8-tetrahydro-quinolin-8-yl)-amine


 


Example 151




(1H-Benzoimidazol-2-ylmethyl)-(4-{[(1-methyl-1H-indol-2-ylmethyl)-amino]-methyl}-benzyl)-(5,6,7,8-tetrahydro-quinolin-8-yl)-amine


 


Example 152




(1H-Benzoimidazol-2-ylmethyl)-(4-{[(5-chloro-1-methyl-3-trifluoromethyl-1H-pyrazol-4-ylmethyl)-amino]-methyl}-benzyl)-(5,6,7,8-tetrahydro-quinolin-8-yl)-amine


 


Example 153




(1H-Benzoimidazol-2-ylmethyl)-(5,6,7,8-tetrahydro-quinolin-8-yl)-[4-({[1-(toluene-4-sulfonyl)-1H-pyrrol-2-ylmethyl]-amino}-methyl)-benzyl]-amine


 


Example 154




(1H-Benzoimidazol-2-ylmethyl)-(4-{[(5-methyl-2H-pyrazol-3-ylmethyl)-amino]-methyl}-benzyl)-(5,6,7,8-tetrahydro-quinolin-8-yl)-amine


 


Example 155




(H-Benzoimidazol-2-ylmethyl)-(4-{[(furan-2-ylmethyl)-amino]-methyl}-benzyl)-(5,6,7,8-tetrahydro-quinolin-8-yl)-amine


 


Example 156




(1H-Benzoimidazol-2-ylmethyl)-(5,6,7,8-tetrahydro-quinolin-8-yl)-(4-{[(thiophen-2-ylmethyl)-amino]-methyl}-benzyl)-amine


 


Example 157




(1H-Benzoimidazol-2-ylmethyl)-(4-{[(5-bromo-thiophen-2-ylmethyl)-amino]-methyl}-benzyl)-(5,6,7,8-tetrahydro-quinolin-8-yl)-amine


 


Example 158




(1H-Benzoimidazol-2-ylmethyl)-(4-{[(5-methyl-thiophen-2-ylmethyl)-amino]-methyl}-benzyl)-(5,6,7,8-tetrahydro-quinolin-8-yl)-amine


 


Example 159




(1H-Benzoimidazol-2-ylmethyl)-(5,6,7,8-tetrahydro-quinolin-8-yl)-(4-{[(thiophen-3-ylmethyl)-amino]-methyl}-benzyl)-amine


 


Example 160




(1H-Benzoimidazol-2-ylmethyl)-(4-{[1-(3-methyl-thiophen-2-yl)-ethylamino]-methyl}-benzyl)-(5,6,7,8-tetrahydro-quinolin-8-yl)-amine


 


Example 161




(1H-Benzoimidazol-2-ylmethyl)-(4-{[(2,5-dimethyl-1-phenyl-1H-pyrrol-3-ylmethyl)-amino]-methyl}-benzyl)-(5,6,7,8-tetrahydro-quinolin-8-yl)-amine


 


Example 162




(1H-Benzoimidazol-2-ylmethyl)-(4-{[(5-methyl-furan-2-ylmethyl)-amino]-methyl}-benzyl)-(5,6,7,8-tetrahydro-quinolin-8-yl)-amine


 


Example 163




(1H-Benzoimidazol-2-ylmethyl)-(4-{[(1-methyl-1H-pyrrol-2-ylmethyl)-amino]-methyl}-benzyl)-(5,6,7,8-tetrahydro-quinolin-8-yl)-amine


 


Example 164




(1H-Benzoimidazol-2-ylmethyl)-{4-[(1-furan-2-yl-ethylamino)-methyl]-benzyl}-(5,6,7,8-tetrahydro-quinolin-8-yl)-amine


 


Example 165




(1H-Benzoimidazol-2-ylmethyl)-(4-{[1-(2,4-dimethyl-thiazol-5-yl)-ethylamino]-methyl}-benzyl)-(5,6,7,8-tetrahydro-quinolin-8-yl)-amine


 


Example 166




(1H-Benzoimidazol-2-ylmethyl)-{4-[(4,5,6,7-tetrahydro-benzo[b]thiophen-4-ylamino)-methyl]-benzyl}-(5,6,7,8-tetrahydro-quinolin-8-yl)-amine


 


Example 167




4-{[(Benzofuran-2-ylmethyl)-amino]-methyl}-benzyl)-(1H-benzoimidazol-2-ylmethyl)-(5,6,7,8-tetrahydro-quinolin-8-yl)-amine


 


Example 168




(1H-Benzoimidazol-2-ylmethyl)-(4-{[(1-methyl-1H-benzoimidazol-2-ylmethyl)-amino]-methyl}-benzyl)-(5,6,7,8-tetrahydro-quinolin-8-yl)-amine


 


Example 169




(1H-Benzoimidazol-2-ylmethyl)-(4-{[(5-methyl-3H-imidazol-4-ylmethyl)-amino]-methyl}-benzyl)-(5,6,7,8-tetrahydro-quinolin-8-yl)-amine


 


Example 170




(1H-Benzoimidazol-2-ylmethyl)-(4-{[(1H-imidazol-2-ylmethyl)-amino] methyl}-benzyl)-(5,6,7,8-tetrahydro-quinolin-8-yl)-amine


 


Example 171




(1H-Benzoimidazol-2-ylmethyl)-(4-{[(1H-pyrrol-2-ylmethyl)-amino]-methyl}-benzyl)-(5,6,7,8-tetrahydro-quinolin-8-yl)-amine


 


Example 172




(1H-Benzoimidazol-2-ylmethyl)-(4-{[(6-methyl-pyridin-2-ylmethyl)-amino]-methyl}-benzyl)-(5,6,7,8-tetrahydro-quinolin-8-yl-amine


 


Example 173




(1H-Benzoimidazol-2-ylmethyl)-(4-{[(quinolin-2-ylmethyl)-amino]-methyl}-benzyl)-(5,6,7,8-tetrahydro-quinolin-8-yl)-amine


 


Example 174




(1H-Benzoimidazol-2-ylmethyl)-(4-{[1-(5-methyl-furan-2-yl)-ethylamino]-methyl}-benzyl)-(5,6,7,8-tetrahydro-quinolin-8-yl)-amine


 


Example 175




(1H-Benzoimidazol-2-ylmethyl)-(5,6,7,8-tetrahydro-quinolin-8-yl)-{4-[(1-thiazol-2-yl-ethylamino)-methyl]-benzyl}-amine


 


Example 176




(1H-Benzoimidazol-2-ylmethyl)-(5,6,7,8-tetrahydro-quinolin-8-yl)-{4-[(1-thiophen-2-yl-ethylamino)-methyl]-benzyl}-amine


 


Example 177




(1H-Benzoimidazol-2-ylmethyl)-(5,6,7,8-tetrahydro-quinolin-8-yl)-{4-[(1-thiophen-3-yl-ethylamino)-methyl]-benzyl}-amine


 


Example 178




(1H-Benzoimidazol-2-ylmethyl)-(4-{[(1H-imidazol-2-ylmethyl)-amino] methyl}-benzyl)-(5,6,7,8-tetrahydro-quinolin-8-yl)-amine


 


Example 179




(1H-Benzoimidazol-2-ylmethyl)-(4-{[(1H-pyrrol-2-ylmethyl)-amino]-methyl}-benzyl)-(5,6,7,8-tetrahydro-quinolin-8-yl)-amine


 


Example 180




(1H-Benzoimidazol-2-ylmethyl)-(4-{[(6-methyl-pyridin-2-ylmethyl)-amino]-methyl}-benzyl)-(5,6,7,8-tetrahydro-quinolin-8-yl)-amine


 


Example 181




(1H-Benzoimidazol-2-ylmethyl)-(4-{[(quinolin-2-ylmethyl)-amino]-methyl}-benzyl)-(5,6,7,8-tetrahydro-quinolin-8-yl)-amine


 


Example 182




(1H-Benzoimidazol-2-ylmethyl)-(4-{[1-(5-methyl-furan-2-yl)-ethylamino]-methyl}-benzyl)-(5,6,7,8-tetrahydro-quinolin-8-yl)-amine


 


Example 183




(1H-Benzoimidazol-2-ylmethyl)-(5,6,7,8-tetrahydro-quinolin-8-yl)-{4-[(1-thiazol-2-yl-ethylamino)-methyl]-benzyl}-amine


 


Example 184




(1H-Benzoimidazol-2-ylmethyl)-(5,6,7,8-tetrahydro-quinolin-8-yl)-{4-[(1-thiophen-2-yl-ethylamino)-methyl]-benzyl}-amine


 


Example 185




(1H-Benzoimidazol-2-ylmethyl)-(5,6,7,8-tetrahydro-quinolin-8-yl)-{4-[(1-thiophen-3-yl-nl ethylamino)-methyl]-benzyl}-amine


 


Example 186




(1H-Benzoimidazol-2-ylmethyl)-{4-[(1-pyrazin-2-yl-ethylamino)-methyl]-benzyl}-(5,6,7,8-tetrahydro-ouinolin-8-yl)-amine


 


Example 187




(1H-Benzoimidazol-2-ylmethyl)-{4-[(1-pyridin-4-yl-ethylamino)-methyl]-benzyl}-(5,6,7,8-tetrahydro-quinolin-8-yl)-amine


 


Example 188




(1H-Benzoimidazol-2-ylmethyl)-(4-{[(furan-3-ylmethyl)-amino]-methyl}-benzyl)-(5,6,7,8-tetrahydro-quinolin-8-yl)-amine


 


Example 189




2-(4-{[(1H-Benzoimidazol-2-ylmethyl)-(5,6,7,8-tetrahydro-quinolin-8-yl)-amino]-methyl}-benzylamino)-1,2-di-pyridin-2-yl-ethanol


 


Example 190




1H-Benzoimidazol-2-ylmethyl)-{4-[(1-pyridin-3-yl-propylamino)-methyl]-benzyl}-(5,6,7,8-tetrahydro-quinolin-8-yl)-amine


 


Example 191




1H-Benzoimidazol-2-ylmethyl)-(5,6,7,8-tetrahydro-quinolin-8-yl)-(4-{[(thiazol-2-ylmethyl)-amino]-methyl}-benzyl)-amine


 


Example 192




(1H-Benzoimidazol-2-ylmethyl)-(4-{[(6-fluoro-1H-indol-3-ylmethyl)-amino]-methyl}-benzyl)-(5,6,7,8-tetrahydro-quinolin-8-yl)-amine


 


Example 193




1H-Benzoimidazol-2-ylmethyl)-[4-({[5-(2-nitro-phenyl)-furan-2-ylmethyl]-amino}-methyl)-benzyl]-(5,6,7,8-tetrahydro-quinolin-8-yl)-amine


 


Example 194




(1H-Benzoimidazol-2-ylmethyl)-(4-{[(1H-imidazol-4-ylmethyl)-amino] methyl}-benzyl)-(5,6,7,8-tetrahydro-quinolin-8-yl)-amine


 


Example 195




(1H-Benzoimidazol-2-ylmethyl)-(5,6,7,8-tetrahydro-quinolin-8-yl)-[4-({[5-(3-trifluoromethyl-phenyl)-furan-2-ylmethyl]-amino}-methyl)-benzyl]-amine


 


Example 196




(1H-Benzoimidazol-2-ylmethyl)-(4-{[(5-chloro-3-methyl-1-phenyl-1H-pyrazol-4-ylmethyl)-amino]-methyl}-benzyl)-(5,6,7,8-tetrahydro-quinolin-8-yl)-amine


 


Example 197




(1H-Benzoimidazol-2-ylmethyl)-(4-{[(3-phenyl-1H-pyrazol-4-ylmethyl)-amino]-methyl}-benzyl)-(5,6,7,8-tetrahydro-quinolin-8-yl)-amine


 


Example 198




3-(4-{[(1H-Benzoimidazol-2-ylmethyl)-(5,6,7,8-tetrahydro-quinolin-8-yl)-amino]-methyl}-benzylamino)-3-pyridin-2-yl-propionic acidethyl ester


 


Example 199




1H-Benzoimidazol-2-ylmethyl)-(4-{[(5-chloro-1H-indol-3-ylmethyl)-amino]-methyl}-benzyl)-(5,6,7,8-tetrahydro-quinolin-8-yl)-amine


 


Example 200




4-{[(1-Benzenesulfonyl-1H-pyrrol-2-ylmethyl)-amino]-methyl}-benzyl)-(1H-benzoimidazol-2-ylmethyl)-(5,6,7,8-tetrahydro-quinolin-8-yl)-amine


 


Example 201




4-{[(Benzo[b]thiophen-3-ylmethyl)-amino]-methyl}-benzyl)-(1H-benzoimidazoi-2-ylmethyl)-(5,6,7,8-tetrahydro-quinolin-8-yl)-amine


 


Example 202




(1H-Benzoimidazol-2-ylmethyl)-[4-({[5-(2-methyl-5-trifluoromethyl-2H-pyrazol-3-yl)-thiophen-2-ylmethyl]-amino}-methyl)-benzyl]-(5,6,7,8-tetrahydro-quinolin-8-yl)-amine


 


Example 203




(1H-Benzoimidazol-2-ylmethy)-(5,6,7,8-tetrahydro-quinolin-8-yl)-[4-({[1-(tolene-4-sulfonyl)-1H-indol-3-ylmethyl]-amino}-methyl)-benzyl]-amine


 


Example 204




(1H-Benzoimidazol-2-ylmethyl)-(4-{[1-(3,5-dimethyl-pyrazin-2-yl)-ethylamino]-methyl}-benzyl)-(5,6,7,8-tetrahydro-quinolin-8-yl)-amine


 


Example 205




(1H-Benzoimidazol-2-ylmethyl)-(4-{[(4-bromo-1-methyl-1H-pyrazol-3-ylmethyl)-amino]-methyl}-benzyl)-(5,6,7,8-tetrahydro-quinolin-8-yl) amine


 


Example 206




(1H-Benzoimidazol-2-ylmethyl)-(4-{[(2-ethyl-5-methyl-3H-imidazol-4-ylmethyl)-amino]-methyl}-benzyl)-(5,6,7,8-tetrahydro-quinolin-8-yl)-amine


 


Example 207




(1H-Benzoimidazol-2-ylmethyl)-(4-{[(2-methyl-1H-imidazol-4-ylmethyl)-amino]-methyl}-benzyl)-(5,6,7,8-tetrahydro-quinolin-8-yl)-amine


 


Example 208




(1H-Benzoimidazol-2-ylmethyl)-(4-{[(2-phenyl-1H-imidazol-4-ylmethyl)-amino]-methyl}-benzyl)-(5,6,7,8-tetrahydro-quinolin-8-yl)-amine


 


Example 209




(1H-Benzoimidazol-2-ylmethyl)-(4-{[(2-ethyl-3H-imidazol-4-ylmethyl) amino]-methyl}-benzyl)-(5,6,7,8-tetrahydro-quinolin-8-yl)-amine


 


Example 210




6-[(4-{[(1H-Benzoimidazol-2-ylmethyl)-(5,6,7,8-tetrahydro-quinolin-8-yl)-amino]-methyl}-benzylamino)-methyl]-2-methylsulfanyl-nicotinonitrile


 


Example 211




(1H-Benzoimidazol-2-ylmethyl)-(4-{[(4-bromo-1H-pyrazol-3-ylmethyl)-amino]-methyl}-benzyl)-(5,6,7,8-tetrahydro-quinolin-8-yl)-amine


 


Example 212




(1H-Benzoimidazol-2-ylmethyl)-(4-{[(di-pyridin-2-yl-methyl)-amino]-methyl}-benzyl)-(5,6,7,8-tetrahydro-quinolin-8-yl)-amine









EXAMPLE: 213




AMD 9536: Preparation of N-(2-pyridinylmethyl)-N′-[cis-2-[[(1H)-benzimidazol-2-ylmethyl]amino]]cyclohexyl]-1,4-benzenedimethanamine (hydrobromide salt)
Preparation of cis-1-[N-(t-butoxycarbonyl)]-2-[N-(2-nitrobenzenesulfonyl)]-cyclohexane-1,2-diamine




To a solution of cis-1-[N-(t-butoxycarbonyl)]-cyclohexane-1,2-diamine (1.01 g, 4.72 mmol) in CH2Cl2 (24 mL) was added triethylamine (1 mL, 7.17 mmol) followed by 2-nitrobenzenesulfonyl chloride (1.12 g, 5.06 mmol) The resultant solution was stirred at room temperature for 2 hours then poured into water and diluted with CH2Cl2 (25 mL). The phases were separated and the organic phase was washed with brine (2×20 mL), dried (Na2SO4), and concentrated. The resultant white solid (1.73 g) was used without further purification. 1H NMR (CDCl3) □ 1.36–1.71 (m, 17H), 3.54–3.61 (m, 1H), 3.71–3.77 (m, 1H), 4.79 (br d, 1H J=7.8 Hz), 5.71 (br d, 1H J=8.1 Hz), 7.73–7.78 (m, 2H), 7.86–7.89 (m, 1H), 8.13–8.16 (m, 1H).
Preparation of cis-1 [N-(2-nitrobenzenesulfonyl)]-cyclohexane-1,2-diamine




The solid (0.38 g, 0.97 mmol) from above was dissolved in CH2Cl2 (4 mL) and treated with trifluoroacetic acid (2 mL) and the mixture was stirred for 60 minutes. The resultant yellow foam (0.258 g) was used without further purification. 1H NMR (CDCl3) 1.25–1.58 (m, 8H), 2.86–2.91 (m, 1H), 3.39–3.44 (m, 1H), 7.71–7.75 (m, 2H), 7.85–7.88 (m, 1H), 8.14–8.17 (m, 1H);




Using General Procedure B: To a solution of cis-1 [N-(2-nitrobenzenesulfonyl)]-cyclohexane-1,2-diamine (0.258 g, 0.862 mmol) and 4-[[N-(t-butoxycarbonyl)-N-(2-pyridinylmethyl)amino]methyl]benzaldehyde (0.281 g, 0.86 mmol) in CH2Cl2 (8 mL) was added NaBH(OAc)3 (0.362 g, 1.71 mmol) and the mixture was stirred at room temperature for 2 hours. Purification of the crude material by column chromatography on silica gel (20:1 CH2Cl2-MeOH) afforded the desired amine (0.400 g) as a white solid.




To a solution of the solid from above (0.20 g, 0.33 mmol) and N,N,-diisopropylethylamine (0.17 mL, 0.98 mmol) in CH2Cl2 (5 mL) was added benzylchloroformate (0.14 mL, 0.98 mmol) dropwise and the mixture was stirred at room temperature for 90 minutes. The crude oil was purified by column chromatography on silica gel (20:1 CH2Cl2-MeOH) and provided the protected amine (0.24 g) as a yellow foam.




Using General Procedure C: The yellow foam (0.46 g, 0.62 mmol) was treated with thiophenol (0.63 mL, 6.2 mmol) and K2CO3 (1.20 g, 8.70 mmol) in CH3CN (12 mL) for 30 minutes. Purification of the crude material by radial chromatography on silica gel (2 mm plate, 10:1:1 CH2Cl2-MeOH—NH4OH) provided 0.20 g of a yellow oil.




Using General Procedure B: To a solution of the above oil (0.10 g, 0.36 mmol) and 1-[2-(trimethylsilyl)ethoxy]methyl]-1H-benzimidazole-2-carboxaldehyde (0.281 g, 0.46 mmol) in CH2Cl2 (3.5 mL) was added NaBH(OAc)3 (0.229 g, 1.08 mmol) and the mixture was stirred at room temperature overnight. Purification of the crude material by radial chromatography on silica gel (2 mm plate, 40:1:1 CH2Cl2-MeOH—NH4OH) afforded the desired amine (0.199 g) as a white solid.
Global deprotection of SEM, Cbz & BOC protecting groups: The white solid (0.323 g) was dissolved in glacial acetic acid (2 mL), treated with HBr saturated acetic acid (7 mL) and stirred at room temperature overnight. The resultant hydrobromide salt was partitioned between CH2Cl2 (20 mL) and 10 N NaOH (4 mL). The aqueous phase was extracted with CH2Cl2 (3×10 mL) and the combined organic extracts were dried (Na2SO4), filtered and concentrated under reduced pressure to give the deprotected crude amine as a yellow oil. Purification of the crude material by radial chromatography on silica gel (1 mm plate, 40:1:1 CH2Cl2-MeOH—NH4OH) gave 0.043 g of the free base of the title compound as a colorless oil.
Using General Procedure D: Conversion of the free base to the hydrobromide salt, followed by re-precipitation of the intermediate solid from methanol/ether, gave AMD 9536 (0.087 g) as a white solid. 1H NMR (D2O) □ 1.40–1.75 (m, 6H), 1.89–1.96 (m, 2H), 3.32 (br s, 1H), 3.44–3.48 (m, 1H), 3.89 (d, 1H, J=13.2 Hz), 4.03–4.18 (m, 2H), 4.20 (d, 1H, J=13.8 Hz), 4.38 (d, 1H, J=13.5 Hz), 4.47 (s, 2H), 4.52 (d, 1H; J=18 Hz), 7.30 (d, 2H, J=8.1 Hz), 7.48 (d, 2H, J=8.1 Hz), 7.51–7.57 (m, 2H), 7.67–7.73 (m, 2H), 7.80–7.89 (m, 2H), 8.31 (td, 1H, J=8.1, 1.5 Hz), 8.71 (br d, 1H, J=6.0 Hz); 13C NMR (D2O) □ 19.01, 22.78, 24.45, 26.63, 42.73, 48.31, 48.71, 50.70, 53.63, 58.75, 114.14, 126.66, 126.98, 127.01, 130.74, 131.09, 131.14, 131.73, 133.28, 144.20, 146.37, 147.22, 153.63; ES-MS m/z 455 (M+H). Anal. Calcd. for C28H34N6.4.4HBr.4.5H2O: C, 37.68; H, 5.36; N, 9.42; Br, 39.39. Found: C, 37.83; H, 4.96; N, 9.11; Br, 39.00.
EXAMPLE: 214




AMD9576: Preparation of N-[2-(3-hydroxy)pyridinylmethyl]-N′-{cis-2-[[(1H)-benzimidazol-2-ylmethyl]amino]cyclohexyl}-1,4-benzenedimethanamine (hydrobromide salt)
Using General Procedure B: To a solution of cis-1-[N-(2-nitrobenzenesulfonyl)]-cyclohexane-1,2-diamine (prepared as described for EXAMPLE, AMD9536) (780 mg, 2.6 mmol) and (4-formylbenzyl)-[(3-hydroxy)pyridin-2-ylmethyl]-carbamic acid tert-butyl ester (890 mg, 2.6 mmol) in THF (25 mL) was added acetic acid (0.15 mL, 2.6 mmol) and NaBH(OAc)3 (1.65 g, 7.79 mmol) and the reaction stirred for 16 h to give a yellow foam (1.7 g).
A solution of the foam from above (1.7 g), N,N-diisopropylethylamine (1.5 mL, 8.6 mmol) and benzyl chloroformate (1.11 mL, 7.78 mmol) in CH2Cl2 (25 mL) was stirred at room temperature for 1.5 h. The mixture was diluted with saturated, aqueous NaHCO3 (20 mL) and the aqueous phase was extracted with CH2Cl2 (3×15 mL). The phases were separated and the combined organic phases dried (MgSO4), filtered and concentrated under reduced pressure. Purification of the crude material by column chromatography on silica gel (CH2Cl/MeOH, 98:2) gave a yellow foam (2.16 g) which was used without further purification in the next step.
Using General Procedure C: The foam from above (2.16 g) in CH3CN (50 mL) was reacted with thiophenol (0.80 mL, 7.8 mmol) and potassium carbonate (1.44 g, 10.4 mmol) at 40° C. for 20 h. Purification of the crude material by chromatography on neutral alumina (CH2Cl2/MeOH, 100:0 followed by 9:1) gave the deprotected material (976 mg, 65%) as a yellow foam. 1H NMR (CDCl3) □ 1.26–1.90 (m, 17H), 3.45 (s, 1H), 4.06 (m, 1H), 4.46 (s, 4H), 4.60 (d, 1H, J=17 Hz), 4.78 (d, 1H, J=17 Hz), 5.16 (m, 2H), 7.13–7.38 (m, 11H), 8.05 (d, 1H, J=4.2 Hz), 9.69 (br s, 1H).
General Procedure for Alkylation: To a solution of the foam from above (972 mg, 1.69 mmol) and N-(tert-butoxycarbonyl)-2-chloromethylbenzimidazole (451 mg, 1.69 mmol) in CH3CN (17 mL) was added potassium iodide (14 mg, 0.084 mmol) and N,N-diisopropylethylamine (0.44 mL, 2.5 mmol) and the mixture heated at 60° C. for 16 h. Purification of the crude material by chromatography on silica gel (CH2Cl2/MeOH/NH4OH, 200:3:0.2) gave the N-alkylated product (1.10 g, 81%) as a yellow foam. 1H NMR (CDCl3) □ 1.26–1.96 (m, 26H), 2.35 (s, 1H), 3.27 (s, 1H), 4.05 (s, 1H), 4.24 (m, 2H), 4.48 (m, 4H), 4.66 (m, 1H), 4.77–5.16 (m, 3H), 7.13–7.37 (m, 13H), 7.71 (m, 1H), 7.90 (m, 1H), 8.04 (dd, 1H, J=4.5, 1.5 Hz), 9.70 (s, 1H).
Using General Procedure D: The foam from above (190 mg, 0.236 mmol) was treated with HBr saturated acetic acid (5 mL) and stirred at room temperature overnight. Conversion of this material to the hydrobromide salt with simultaneous removal of the Boc and Cbz protecting groups gave a precipitate which was partitioned between CH2Cl2 (20 mL) and 10 N NaOH (4 mL). The aqueous phase was extracted with CH2Cl2 (3×10 mL) and the combined organic extracts were dried (MgSO4), filtered and concentrated under reduced pressure to give the deprotected crude amine. Purification of the crude material by chromatography on silica gel (CH2Cl2/MeOH/NH4OH, 100:5:1) gave a colourless oil (53 mg, 48%).
Using General Procedure D: Conversion of the oil from above (53 mg, 0.11 mmol) to the hydrobromide salt followed by re-precipitation of the intermediate solid from methanol/ether gave AMD9576 (89 mg, 82%) as a colourless solid (89 mg, 82%). 1H NMR (D2O) □ 1.38–1.76 (m, 6H), 1.93 (m, 2H), 3.33 (br s, 1H), 3.47 (m, 1H), 3.98 (m, 3H), 4.20 (d, 1H, J=14 Hz), 4.38 (d, 1H, J=14 Hz), 4.52 (m, 3H), 7.29 (d, 2H, J=8.1 Hz), 7.47 (d, 2H, J=8.4 Hz), 7.54 (m, 2H), 7.69 (m, 2H), 7.85 (dd, 1H, J=8.7, 5.4 Hz), 7.95 (dd, 1H, J=8.7, 0.9 Hz), 8.27 (dd, 1H, J=5.4, 1.2 Hz); 13C NMR (D2O) □ 20.55, 22.36, 24.34, 25.99, 28.18, 44.30, 45.47, 49.82, 52.38, 55.17, 60.33, 115.69, 128.18, 130.96, 132.26, 132.55, 132.67, 133.01, 134.11, 134.21, 134.84, 136.45, 155.16, 157.35. ES-MS m/z 471 (M+H). Anal Calcd for (C28H34N6O) 5.0(HBr) 2.0(H2O) 1.0(AcOH): C, 37.10; H, 4.88; N, 8.65; Br, 41.13. Found: C, 37.04; H, 4.70; N, 8.70; Br, 41.21.
EXAMPLE: 215




AMD 9537: Preparation of N-(3-hydroxy-2-pyridinylmethyl)-N′-[cis-2-[[imidazol-2-ylmethyl]amino]cyclohexyl]-1,4-benzenedimethanamine (hydrobromide salt)
Using General Procedure B: To a solution of cis-1 [N-(2-nitrobenzenesulfonyl)]-cyclohexane-1,2-diamine (0.318 g, 1.06 mmol) and 4-[[N-(t-butoxycarbonyl)-N-(3-hydroxy-2-pyridinylmethyl)amino]methyl]benzaldehyde (0.361 g, 1.04 mmol) in THF (10 mL) was added glacial acetic acid (60 □L, 1.05 mmol) followed by NaBH(OAc)3 (0.424 g, 2.00 mmol) and the mixture was stirred at room temperature for 3 hours. The resultant yellow foam (0.67 g) was used without further purification.




To a solution of the foam (0.66 g, 1.06 mmol) from above and N,N,-diisopropylethylamine (0.90 mL, 5.15 mmol) in CH2Cl2 (10 mL) was added benzylchloroformate (0.50 mL, 3.50 mmol) dropwise and the mixture was stirred at room temperature for 30 minutes. The crude oil was purified by column chromatography on silica gel (40:1 CH2Cl2-MeOH) and provided the protected amine (0.63 g) as a white foam.




Using General Procedure C: The white foam (0.63 g, 0.83 mmol) was treated with thiophenol (0.65 mL, 6.33 mmol) and K2CO3 (1.50 g, 10.88 mmol) in CH3CN (16 mL) for 30 minutes. Purification of the crude material by radial chromatography on silica gel (2 mm plate, 10:1:1 CH2Cl2-MeOH—NH4OH) provided 0.185 g of a white foam. 1H NMR (CDCl3) □ 1.26–1.90 (m, 17H), 3.45 (br s, 1H), 4.06 (br d, 1H, J=12.6 Hz), 4.46 (br s, 4H), 4.59 (d, 1H, J=16.6 Hz), 4.75–4.80 (m, 1H), 5.15 (br s, 2H), 7.13–7.36 (m, 11H), 8.05 (dd, 1H, J=4.5, 1.5 Hz), 9.70 (br s, 1H);




Using General Procedure A: To a solution of the above foam (0.185 g, 0.322 mmol) and imidazole-2-carboxaldehyde (0.030 g, 0.314 mmol) in MeOH (3.5 mL) was added NaBH3CN (0.047 g, 0.75 mmol) and the mixture was stirred at room temperature for 3 days. Purification of the crude material by radial chromatography on silica gel (2 mm plate, 20:1 CH2Cl2-MeOH) afforded the desired amine (0.114 g) as a white solid.




Removal of Cbz Protecting group: To a solution of the above solid (0.113 g, 0.172 mmol) in MeOH (2 mL) was added palladium on activated carbon (10%, 22 mg) and the mixture was hydrogenated (1 atm) at room temperature overnight. The crude material was purified by radial chromatography on silica gel (1 mm plate, 100:1:1 CH2Cl2-MeOH—NH4OH) and afforded the amine as a white solid (42 mg).
Using General Procedure D: Conversion of the white solid (42 mg) to the hydrobromide salt with simultaneous removal of the BOC-protecting group, followed by re-precipitation of the intermediate solid from methanol/ether, gave AMD 9537 (54 mg) as a white solid.
1H NMR (D2O) □ 1.37–1.63 (m, 5H), 1.72–1.77 (m, 2H), 1.88–1.94 (m, 1H), 3.22 (br s, 1H), 3.35–3.40 (m, 1H), 3.86 (d, 1H, J=16.5 Hz), 4.21–4.35 (m, 3H), 4.44 (s, 2H), 4.62 (s, 2H), 7.36 (s, 2H), 7.52 (s, 4H), 7.88 (dd, 1H, J=8.7, 5.4 Hz), 8.00 (d, 1H, J=8.7 Hz), 8.30 (d, 1H, J=5.1 Hz); 13C NMR (D2O) □ 16.45, 20.55, 21.82, 23.95, 39.57, 41.70, 45.72, 49.06, 50.89, 55.91, 116.69 (2 carbons), 127.09, 128.81 (4 carbons), 129.28, 130.29, 130.49, 130.60, 132.43, 144.57, 153.57; ES-MS m/z 421 (M+H).
EXAMPLE: 216
Inhibition of Chemokine Induced Ca Flux Measured on a FLIPR (Molecular Devices)
Reagents:
Loading dye: Fluo-3, AM (Molecular Probes F-1241) is dissolved in anhydrous DMSO and stored frozen in aliquots. To increase the solubility of the dye in the loading medium, 10% (w/v) pluronic acid (Molecular Probes F-127) is added to the Fluo-3 stock solution immediately before use.
Flux Buffer:
HBSS+20 mM Hepes buffer+0.2% BSA, pH 7.4. HBSS 10× [(w/o phenol red and sodium bicarbonate (Gibco 14 065–049)]; Hepes buffer 1M (Gibco 15 630–056), BSA (Sigma A3675). The flux buffer is vacuum-filtered and stored refrigerated for a maximum of 5 days. Before use in the experiment, the buffer is warmed at 37° C. in a waterbath.
Antagonists:
The test compounds were diluted in flux buffer to the desired concentration and added to 4 wells of a black microplate (4 parallel measurements per compound). The following control wells were used: 100% response control (no inhibition), flux buffer was added; 100% inhibition control: chemokine was added at 5-times the concentration required to induce a Ca flux.
Preparation of the Agonist (Chemokine) Plate
The chemokines are diluted in flux buffer to concentrations that are 4-fold higher than the desired concentrations required for stimulation of the cells (i.e. 2.5 nM for SDF-1□ and 0.6 nM for RANTES). The chemokines were added to untreated 96-well Sero well compound plates (International Medical, Sterilin code 611F96). In the negative control well's (baseline monitoring), flux buffer is added instead of chemokine. As a positive control to check for dye loading efficiency, 20 μM digitonin (final concentration) was also included. The agonist plate was incubated in the FLIPR (37° C.) for 15–30 min.
Cell Loading Protocol for Measuring Inhibition of SDF-1□ Induced Ca Flux in SUP-T1 Cells.
SUP-T1 cells were centrifuged at room temperature (RT) and re-suspended in loading medium (RPMI-1640 containing 2% FBS and 4 μM Fluo-3, AM). The cells were incubate at room temperature for 45 min. then washed twice in flux buffer then incubated in flux buffer at room temperature for 10 min. The cells were centrifuged and re-suspended in flux buffer at a density of 3×106 cells per mL. A 100 uL aliquot of the cell suspension (3×105 cells) was added to each well of a black microplate (Costar 3603), which already contains 50 uL of a solution of the test compound (at concentrations that are 3-fold higher than the desired final compound concentrations). The microplate is then gently centrifuged at room temperature. Homogeneous spreading of the cells on the bottom of the microplate wells was then confirmed with a microscope and the microplate was incubated in the FLIPR (37° C.) for 10 min. prior to testing.
Fluorescence Measurements as a Function of Time on the FLIPR
The FLIPR settings (camera exposure time and laser power) are adjusted to obtain initial fluorescence values between 8,000 and 10,000 units. After monitoring a 20 second-baseline, the agonist (chemokine) (50 uL) is added by automatic pipettor with black pipette tips. Fluorescence is measured simultaneously in all wells of the microplate every 2 seconds (first 2 min) and thereafter every 6 seconds (additional 2 min). The average ca-flux measured in each set of 4 identical wells (one test compound) was calculated by the FLIPR software.
The compounds of the current invention were tested for inhibition of SDF-1□ induced Ca flux in SUP-T1 cells using the method described above. The following compounds inhibited SDF-1□ induced Ca flux greater than 20% at 20 □g/mL:
Example numbers: 1, 2, 3, 4, 5, 6, 7, 9, 10, 11, 12, 13, 14, 15, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 35, 36, 38, 40, 42, 44, 54–68 and 132–134.
EXAMPLE: 217
Assay for Inhibition of HIV-1 (NL4.3) Replication in MT-4 Cells
Inhibition of HIV-1 NL4.3 (or IIIB, CXCR4 using) replication assays were performed as previously described (Bridger et al. J. Med. Chem. 1999, 42, 3971–3981; De Clercq et al. Proc. Natl. Acad. Sci, 1992, 89, 5286–5290; De Clercq et al. Antimicrob. Agents Chemother. 1994, 38, 668–674; Bridger et al. J. Med. Chem. 1995, 38, 366–378; Schols et al. J. Exp. Med., 1997, 186, 1383–1388). Anti-HIV activity and cytotoxicity measurements were carried out in parallel. They were based on the viability of MT-4 cells that had been infected with HIV in the presence of various concentrations of the test compounds. After the MT-4 cells were allowed to proliferate for 5 days, the number of viable cells was quantified by a tetrazolium-based colorimetric 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) procedure in 96-well microtrays. In all of these assays, viral input (viral multiplicity of infection, MOI) was 0.01, or 100 times the 50% cell culture infective dose (CCID50). The EC50 was defined as the concentration required to protect 50% of the virus-infected cells against viral cytopathicity.
When compounds of the current invention were tested for inhibition of HIV-1 NL4.3 or IIIB replication in MT-4 cells, the following compounds exhibited EC50's of less than 20 μg/mL:
Examples numbers: 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 35, 36, 38, 40, 42, 44, 54–70 and 131–134
EXAMPLE: 218
Assay for Inhibition of HIV-1 (BaL) Replication in PBMC's
When compounds of the current invention were tested for inhibition of HIV-1 BaL (CCR5 using) replication in PHA-stimulated PBMC's (peripheral blood mononuclear cells) using viral p24 antigen expression (De Clercq et al. Antimicrob. Agents Chemother. 1994, 38, 668–674; Schols et al. J. Exp. Med., 1997, 186, 1383–1388), the following compounds exhibited EC50's of less than 20 μg/mL:
Example numbers: 1, 2, 8, 13, 14, 17, 19, 25, 27, 28, 29, 30, 31, 32, 33, 35, 37, 54, 55, 61–64,66–68 and 132–134.

## Claims

1. A compound of the formula



and the salts thereof wherein:
A is a 6-membered carbocyclic, saturated ring;
R1 is halo, nitro, cyano, optionally substituted hydroxy, optionally substituted thiol, optionally substituted amino, carboxylate, carboxamide, sulfonate, sulfonamide, C2–4 alkanoyl, alkylsulfonyl, or aroyl;
wherein Y is a 6-membered heterocyclic group with one nitrogen, and R2 and R3 together with ring E form a substituted benzimidazole ring, which is substituted at any position on the ring with CF3, halo, alkyl, alkoxy, carboxyalkyl, hydroxy, benzoyl, phenyl, nitro, cyano, carboxylic acid, alkenyl, cycloalkyl, thiol, amino, acyl, carboxylate, carbamate, carboxamide, sulfonamide, aromatic, or heterocyclic group; or
Y is a 6-membered heterocyclic group with two nitrogens, benzoxazolyl, tetrahydroquinolinyl, isoquinolinyl, quinolinyl, 2,3-dioxybenzene, benzimidazolyl, benzothiophenyl, indolyl, 4,5,6,7,-tetrahydrobenzothiophenyl, or benzofuranyl; and R2 and R3 together with ring E form an unsubstituted benzimidazole ring;
wherein each Y may be substituted with hydroxy, halo, alkoxy, alkyl, substituted alkyl, sulfonyl, or toluenesulfonyl;
each R4 is independently H or C1–6 alkylene;
k is 0–1;
L1 is a covalent bond of C1–6 alkyl optionally containing N or O;
Ar is phenylene;
each n is independently 0–2;
R is H or C1–6 alkyl;
provided that said compound is other than
AMD8926: N-(2-pyridinylmethyl)-N′-(5-nitro-1H-benzimidazol-2-ylmethyl)-N′-(5,6,7,8-tetrahydro-8-quinolinyl)-1,4-benzenedimethanamine, or
AMD8927: N-(2-pyridinylmethyl)-N′-(5,6-dimethyl-1H-benzimidazol-2-ylmethyl)-N′-(5,6,7,8-tetrahydro-8-quinolinyl)-1,4-benzenedimethanamine.

2. A pharmaceutical composition comprising an effective therapeutic amount of the compound of claim 1.

3. The compound of claim 1, wherein Y is a 6-membered heterocyclic group with one nitrogen, and R2 and R3 together with ring E form a substituted benzimidazole ring.

4. The compound of claim 3, wherein Y is pyridine.

5. The compound of claim 3, wherein the benzimidazole ring is substituted with halo, C1–6 alkyl, CF3, carboxymethyl, hydroxy, benzoyl, alkoxy or phenyl.

6. The compound of claim 1, wherein Y is a 6-membered heterocyclic group with two nitrogens, benzoxazolyl, tetrahydroquinolinyl, isoquinolinyl, quinolinyl, 2,3-dioxybenzene, benzimidazolyl, benzothiophenyl, indolyl, 4,5,6,7,-tetrahydrobenzothiophenyl, or benzofuranyl; and R2 and R3 together with ring E form an unsubstituted benzimidazole ring.

7. The compound of claim 6, wherein said 6-membered heterocyclic group with two or more nitrogens is pyrazinyl or pyrimidinyl.

8. The compound of claim 1, wherein said compound is
AMD8936: N-(2-pyridinylmethyl)-N′-(5-trifluoromethyl-1H-benzimidazol-2-ylmethyl)-N′-(5,6,7,8-tetrahydro-8-quinolinyl)-1,4-benzenedimethanamine;
AMD8937: N-(2-pyridinylmethyl)-N′-(5-fluoro-1-H-benzimidazol-2-ylmethyl)-N′-(5,6,7,8-tetrahydro-8-quinolinyl)-1,4-benzenedimethanamine;
AMD9365: N-(2-pyridinylmethyl)-N′-(4,5-dimethyl-1-H-benzimidazol-2-ylmethyl)-N′-(5,6,7,8-tetrahydro-8-quinolinyl)-1,4-benzenedimethanamine;
AMD9344: N-(2-pyridinylmethyl)-N′-(4-trifluoromethyl-1-H-benzimidazol-2-ylmethyl)-N′-(5,6,7,8-tetrahydro-8-quinolinyl)-1,4-benzenedimethanamine;
AMD9419: N-(2-pyridinylmethyl)-N′-(5-carboxymethyl-1-H-benzimidazol-2-ylmethyl)-N′-(5,6,7,8-tetrahydro-8-quinolinyl)-1,4-benzenedimethanamine;
AMD9420: N-(2-pyridinylmethyl)-N′-(4-hydroxy-1-H-benzimidazol-2-ylmethyl)-N′-(5,6,7,8-tetrahydro-8-quinolinyl)-1,4-benzenedimethanamine;
AMD8971: N-(2-pyridinylmethyl)-N′-(5-benzoyl-1H-benzimidazol-2-ylmethyl)-N′-(5,6,7,8-tetrahydro-8-quinolinyl)-1,4-benzenedimethanamine;
AMD8933: N-(2-pyridinylmethyl)-N′-[5-chloro-1H-benzimidazol-2-ylmethyl]-N′-(5,6,7,8-tetrahydro-8-quinolinyl)-1,4-benzenedimethanamine;
AMD8968: N-(2-pyridinylmethyl)-N′-[5-methoxy-1H-benzimidazol-2-ylmethyl]-N′-(5,6,7,8-tetrahydro-8-quinolinyl)-1,4-benzenedimethanamine;
AMD9336: N-(2-pyridinylmethyl)-N′-[4-methoxy-1H-benzimidazol-2-ylmethyl]-N′-(5,6,7,8-tetrahydro-8-quinolinyl)-1,4-benzenedimethanamine;
AMD9368: N-(2-pyridinylmethyl)-N′-[4-phenyl-1H-benzimidazol-2-ylmethyl]-N′-(5,6,7,8-tetrahydro-8-quinolinyl)-1,4-benzenedimethanamine;
AMD9387: N-(2-pyridinylmethyl)-N′-[4,7-dimethoxy-1H-benzimidazol-2-ylmethyl]-N′-(5,6,7,8-tetrahydro-8-quinolinyl)-1,4-benzenedimethanamine;
AMD9338: N-(2-pyridinylmethyl)-N′-(4-methylbenzimidazol-2-ylmethyl)-N′-(5,6,7,8-tetrahydro-8-quinolinyl)-1,4-benzenedimethanamine;
AMD9345: N-(2-pyridinylmethyl)-N′-(4-fluorobenzimidazol-2-ylmethyl)-N′-(5,6,7,8-tetrahydro-8-quinolinyl)-1,4-benzenedimethanamine;
AMD9383: N-(2-pyridinylmethyl)-N′-(4-bromobenzimidazol-2-ylmethyl)-N′-(5,6,7,8-tetrahydro-8-quinolinyl)-1,4-benzenedimethanamine;
AMD9611: N-(benzoxazol-2-yl)-N′-(1H-benzimidazol-2-ylmethyl)-N′-(5,6,7,8-tetrahydro-8-quinolinyl)-1,4-benzenedimethanamine;
AMD9425: N-(5,6,7,8-tetrahydro-8-quinolinyl)-N′-(1H-benzimidazol-2-ylmethyl)-N′-(5,6,7,8-tetrahydro-8-quinolinyl)-1,4-benzenedimethanamine;
AMD9439: N-(3-isoquinolinylmethyl)-N′-(1H-benzimidazol-2-ylmethyl)-N′-(6,7,8-tetrahydro-8-quinolinyl)-1,4-benzenedimethanamine;
AMD9440: N-(4-methoxy-2-quinolinylmethyl)-N′-(1H-benzimidazol-2-ylmethyl)-N′-(5,6,7,8-tetrahydro-8-quinolinyl)-1,4-benzenedimethanamine;
AMD9682: N-((methylene-2,3-dioxy)benzenemethyl)-N′-(1H-benzimidazol-2-ylmethyl)-N′-(5,6,7,8-tetrahydro-8-quinolinyl)-1,4-benzenedimethanamine;
AMD9625: (1H-benzimidazol-2-ylmethyl)-(4-{[(pyrazin-2-ylmethyl)-amino]-methyl}-benzyl)-(5,6,7,8-tetrahydro-quinolin-8-yl)-amine;
AMD9673: (1H-benzimidazol-2-ylmethyl)-(4-{[(1H-indol-3-ylmethyl)-amino]-methyl}-benzyl)-(5,6,7,8-tetrahydro-quinolin-8-yl)-amine;
AMD9692: (1H-Benzimidazol-2-ylmethyl)-(4-{[(1H-indol-2-ylmethyl)-amino]-methyl}-benzyl)-(5,6,7,8-tetrahydro-quinolin-8-yl)-amine
AMD9668: (1H-Benzimidazol-2-ylmethyl)-(4-{[(1H-benzimidazol-2-ylmethyl)-amino]-methyl}-benzyl)-(5,6,7,8-tetrahydro-quinolin-8-yl)-amine;
AMD9624: (1H-benzoimidazol-2-ylmethyl)-(4-{[(3-methoxy-pyrazin-2-ylmethyl)-amino]-methyl}-benzyl)-(5,6,7,8-tetrahydro-quinolin-8-yl)-amine;
AMD9675: (1H-benzoimidazol-2-ylmethyl)-(4-{[(pyrimidin-2-ylmethyl)-amino]-methyl}-benzyl)-(5,6,7,8-tetrahydro-quinolin-8-yl)-amine;
AMD9705: (1H-Benzimidazol-2-ylmethyl)-[4-(pyrimidin-2-ylaminomethyl)-benzyl]-(5,6,7,8-tetrahydro-quinolin-8-yl)-amine;
AMD9693: {4-[(1H-Benzimidazol-2-ylamino)-methyl]-benzyl}-(1H-benzimidazol-2-ylmethyl)-(5,6,7,8-tetrahydro-quinolin-8-yl)-amine;
AMD9164: (1H-Benzoimidazol-2-ylmethyl)-(4-{[(2-chloro-quinolin-3-ylmethyl-amino]-methyl}-benzyl)-(5,6,7,8-tetrahydro-quinolin-8-yl)-amine;
AMD9165: (1H-Benzoimidazol-2-ylmethyl)-(4-{[(quinolin-4-ylmethyl-amino]-methyl}-benzyl)-(5,6,7,8-tetrahydro-quinolin-8-yl)-amine;
AMD9168: (1H-Benzoimidazol-2-ylmethyl)-(4-{[(3-methyl-benzo[b]thiophen-2-ylmethyl)-amino]-methyl}-benzyl)-(5,6,7,8-tetrahydro-quinolin-8-yl)-amine;
AMD9169: (1H-Benzoimidazol-2-ylmethyl)-(4-{[(1-benzyl-1H-indol-3-ylmethyl)-amino]-methyl}-benzyl)-(5,6,7,8-tetrahydro-quinolin-8-yl)-amine;
AMD9170: (1H-Benzoimidazol-2-ylmethyl)-(4-{[(quinolin-3-ylmethyl)-amino]-methyl}-benzyl)-(5,6,7,8-tetrahydro-quinolin-8-yl)-amine;
AMD9171: (1H-Benzoimidazol-2-ylmethyl)-(4-{[(1-methyl-1H-indol-3-ylmethyl)-amino]-methyl}-benzyl)-(5,6,7,8-tetrahydro-quinolin-8-yl)-amine;
AMD9176: (1H-Benzoimidazol-2-ylmethyl)-(4-{[1-(1H-indol-2-yl)-ethylamino]-methyl}-benzyl)-(5,6,7,8-tetrahydro-quinolin-8-yl)-amine;
AMD9177: (1H-Benzoimidazol-2-ylmethyl)-(4-{[1-methyl-1H-indol-2-ylmethyl)-amino]-methyl}-benzyl)-(5,6,7,8-tetrahydro-quinolin-8-yl)-amine;
AMD9192: (1H-Benzoimidazol-2-ylmethyl)-{4-[(4,5,6,7-tetrahydro-benzo[b]thiophen-4-ylamino)-methyl]-benzyl}-(5,6,7,8-tetrahydro-quinolin-8-yl)-amine;
AMD9194: 4-{[(Benzofuran-2-ylmethyl)-amino]-methyl}-benzyl)-(1H-benzoimidazol-2-ylmethyl)-(5,6,7,8-tetrahydro-quinolin-8-yl)-amine;
AMD9195: (1H-Benzoimidazol-2-ylmethyl)-(4-{[(1-methyl-1H-benzoimidazol-2-ylmethyl-amino]-methyl}-benzyl)-5,6,7,8-tetrahydro-quinolin-8-yl)-amine;
AMD9200: (1H-Benzoimidazol-2-ylmethyl)-(4-{[(quinolin-2-ylmethyl)-amino]-methyl}-benzyl)-(5,6,7,8-tetrahydro-quinolin-8-yl)-amine;
AMD9205: (1H-Benzoimidazol-2-ylmethyl)-{4-[(1-pyrazin-2-yl-ethylamino)-methyl]-benzyl}-(5,6,7,8-tetrahydro-quinolin-8-yl)-amine;
AMD9211: (1H-Benzoimidazol-2-ylmethyl)-(4-{[(6-fluoro-1H-indol-3-ylmethyl)-amino]-methyl}benzyl)-(5,6,7,8-tetrahydro-quinolin-8-yl)-amine;
AMD9218: 1H-Benzoimidazol-2-ylmethyl)-(4-{[(5-chloro-1H-indol-3-ylmethyl)-amino]-methyl}-benzyl)-(5,6,7,8-tetrahydro-quinolin-8-yl)-amine;
AMD9220: (4-{[(Benzo[b]thiophen-3-ylmethyl)-amino]-methyl}-benzyl)-(1H-benzoimidazol-2-ylmethyl)-5,6,7,8-tetrahydro-quinolin-8-yl)-amine;
AMD9222: (1H-Benzoimidazol-2-ylmethyl)-(5,6,7,8-tetrahydro-quinolin-8-yl)-[4-({[1-(tolene-4-sulfonyl)-1H-indol-3-ylmethyl]-amino}-methyl)-benzyl]-amine; or
AMD9223: (1H-Benzoimidazol-2-ylmethyl)-(4-{[1-3,5-dimethyl-pyrazin-2-yl)-ethylamino-1-methyl}-benzyl)-5,6,7,8-tetrahydro-quinolin-8-yl)-amine.

9. A pharmaceutical composition comprising an effective therapeutic amount of the compound of claim 1.

10. The pharmaceutical composition of claim 9, wherein Y is a 6-membered heterocyclic group with one nitrogen, and R2 and R3 together with ring E form a substituted benzimidazole ring.

11. The pharmaceutical composition of claim 10, wherein Y is pyridine.

12. The pharmaceutical composition of claim 9, wherein the benzimidazole ring is substituted with halo, C1–6 alkyl, CF3, carboxymethyl, hydroxy, benzoyl, alkoxy or phenyl.

13. The pharmaceutical composition of claim 9, wherein Y is a 6-membered heterocyclic group with two nitrogens, benzoxazolyl, tetrahydroquinolinyl, isoquinolinyl, quinolinyl, 2,3-dioxybenzene, benzimidazolyl, benzothiophenyl, indolyl, 4,5,6,7,-tetrahydrobenzothiophenyl, or benzofuranyl; and R2 and R3 together with ring E form an unsubstituted benzimidazole ring.

14. The pharmaceutical composition of claim 13, wherein said 6-membered heterocyclic group with two or more nitrogens is pyrazinyl or pyrimidinyl.

15. A pharmaceutical composition comprising an effective amount of the compound of claim 8.