N-heteroaryl pyrazolopyrimidines as cyclin dependent kinase inhibitors

In its many embodiments, the present invention provides a novel class of pyrazolo[1,5-a]pyrimidine compounds as inhibitors of cyclin dependent kinases, methods of preparing such compounds, pharmaceutical compositions containing one or more such compounds, methods of preparing pharmaceutical formulations comprising one or more such compounds, and methods of treatment, prevention, inhibition, or amelioration of one or more diseases associated with the CDKs using such compounds or pharmaceutical compositions.

FIELD OF THE INVENTION

The present invention relates to pyrazolo[1,5-a]pyrimidine compounds useful as protein kinase inhibitors (such as for example, the inhibitors of the cyclin-dependent kinases, mitogen-activated protein kinase (MAPK/ERK), glycogen synthase kinase 3(GSK3beta) and the like), pharmaceutical compositions containing the compounds, and methods of treatment using the compounds and compositions to treat diseases such as, for example, cancer, inflammation, arthritis, viral diseases, neurodegenerative diseases such as Alzheimer's disease, cardiovascular diseases, and fungal diseases. This application claims benefit of priority from U.S. provisional patent applications, Ser. No. 60/408,027 filed Sep. 4, 2002, and Ser. No. 60/421,959 filed Oct. 29, 2002.

BACKGROUND OF THE INVENTION

Protein kinase inhibitors include kinases such as, for example, the inhibitors of the cyclin-dependent kinases (CDKs), mitogen activated protein kinase (MAPK/ERK), glycogen synthase kinase 3 (GSK3beta), and the like. Protein kinase inhibitors are described, for example, by M. Hale et al in WO02/22610 A1 and by Y. Mettey et al inJ. Med. Chem., (2003) 46 222-236. The cyclin-dependent kinases are serine/threonine protein kinases, which are the driving force behind the cell cycle and cell proliferation. Individual CDK's, such as, CDK1, CDK2, CDK3, CDK4, CDK5, CDK6 and CDK7, CDK8 and the like, perform distinct roles in cell cycle progression and can be classified as either G1, S, or G2M phase enzymes. Uncontrolled proliferation is a hallmark of cancer cells, and misregulation of CDK function occurs with high frequency in many important solid tumors. CDK2 and CDK4 are of particular interest because their activities are frequently misregulated in a wide variety of human cancers. CDK2 activity is required for progression through G1 to the S phase of the cell cycle, and CDK2 is one of the key components of the G1 checkpoint. Checkpoints serve to maintain the proper sequence of cell cycle events and allow the cell to respond to insults or to proliferative signals, while the loss of proper checkpoint control in cancer cells contributes to tumorgenesis. The CDK2 pathway influences tumorgenesis at the level of tumor suppressor function (e.g. p52, RB, and p27) and oncogene activation (cyclin E). Many reports have demonstrated that both the coactivator, cyclin E, and the inhibitor, p27, of CDK2 are either over- or underexpressed, respectively, in breast, colon, nonsmall cell lung, gastric, prostate, bladder, non-Hodgkin's lymphoma, ovarian, and other cancers. Their altered expression has been shown to correlate with increased CDK2 activity levels and poor overall survival. This observation makes CDK2 and its regulatory pathways compelling targets for the development years, a number of adenosine 5′-triphosphate (ATP) competitive small organic molecules as well as peptides have been reported in the literature as CDK inhibitors for the potential treatment of cancers. U.S. Pat. No. 6,413,974, col. 1, line 23-col. 15, line 10 offers a good description of the various CDKs and their relationship to various types of cancer.

There is a need for new compounds, formulations, treatments and therapies to treat diseases and disorders associated with CDKs. It is, therefore, an object of this invention to provide compounds useful in the treatment or prevention or amelioration of such diseases and disorders.

SUMMARY OF THE INVENTION

In its many embodiments, the present invention provides a novel class of pyrazolo[1,5-a]pyrimidine compounds as inhibitors of cyclin dependent kinases, methods of preparing such compounds, pharmaceutical compositions comprising one or more such compounds, methods of preparing pharmaceutical formulations comprising one or more such compounds, and methods of treatment, prevention, inhibition or amelioration of one or more diseases associated with the CDKs using such compounds or pharmaceutical compositions.

In one aspect, the present application discloses a compound, or pharmaceutically acceptable salts or solvates of said compound, said compound having the general structure shown in Formula III:

R2is selected from the group consisting of R9, alkyl, alkenyl, alkynyl, CF3, heterocyclyl heterocyclylalkyl, halogen, haloalkyl, aryl, arylalkyl, heteroarylalkyl, alkynylalkyl, cycloalkyl, heteroaryl, alkyl substituted with 1-6 R9groups which can be the same or different and are independently selected from the list of R9shown below, aryl substituted with 1-3 aryl or heteroaryl groups which can be the same or different and are independently selected from phenyl, pyridyl, thiophenyl, furanyl and thiazolo groups, aryl fused with an aryl or heteroaryl group, heteroaryl substituted with 1-3 aryl or heteroaryl groups which can be the same or different and are independently selected from phenyl, pyridyl, thiophenyl, furanyl and thiazolo groups, heteroaryl fused with an aryl or heteroaryl group,

wherein one or more of the aryl and/or one or more of the heteroaryl in the above-noted definitions for R2can be unsubstituted or optionally substituted with one or more moieties which can be the same or different, each moiety being independently selected from the group consisting of halogen, —CN, —OR5, —SR5, —S(O)2R6, —S(O)2NR5R6, —NR5R6, —C(O)NR5R6, CF3, alkyl, aryl and OCF3;

wherein each of said alkyl, cycloalkyl, aryl, arylalkyl, heterocyclyl, heterocyclylalkyl, heteroaryl and heteroarylalkyl for R3and the heterocyclyl moieties whose structures are shown immediately above for R3can be unsubstituted or optionally independently substituted with one or more moieties which can be the same or different, each moiety being independently selected from the group consisting of halogen, alkyl, aryl, cycloalkyl, CF3, CN, —OCF3, —(CR4R5)pOR5, —OR5, —NR5R6, —(CR4R5)pNR5R6, —C(O2)R5, —C(O)R5, —C(O)NR5R6, —SR6, —S(O)2R6, —S(O)2NR5R6, —N(R5)S(O)2R7, —N(H5)C(O)R7and —N(R5)C(O)NR5R6, with the proviso that no carbon adjacent to a nitrogen atom on a heterocyclyl ring carries a —OR5moiety;

R10is selected from the group consisting of H, alkyl, aryl, arylalkyl, cycloalkyl, heterocyclyl, heterocyclylalkyl, heteroaryl, and heteroarylalkyl, wherein each of said alkyl, aryl, arylalkyl, cycloalkyl, heterocyclyl, heterocyclylalkyl, heteroaryl, and heteroarylalkyl can be unsubstituted or optionally substituted with one or more moieties which can be the same or different, each moiety being independently selected from the group consisting of halogen, alkyl, aryl, cycloalkyl, heterocyclylalkyl, CF3, OCF3, CN, —OR5, —NR4R5, —C(R4R5)p—R9, —N(R5)Boc, —(CR4R5)pOR5, —C(O)2R5, —C(O)NR4R5, —C(O)R5, —SO3H, —SR5, S(O)2R7, —S(O)2NR4R5, —N(R5)S(O)2R7, —N(R5)C(O)R7and —N(R5)C(O)NR4R5;or optionally (i) R5and R10in the moiety —NR5R10, or (ii) R5and R5in the moiety —NR5R6, may be joined together to form a cycloalkyl or heterocyclyl moiety, with each of said cycloalkyl or heterocyclyl moiety being unsubstituted or optionally independently being substituted with one or more R9groups;

R7is selected from the group consisting of alkyl, cycloalkyl, aryl, arylalkenyl, heteroaryl, arylalkyl, heteroarylalkyl, heteroarylalkenyl, and heterocyclyl, wherein each of said alkyl, cycloalkyl, heteroarylalkyl, aryl, heteroaryl and arylalkyl can be unsubstituted or optionally independently substituted with one or more moieties which can be the same or different, each moiety being independently selected from the group consisting of halogen, alkyl, aryl, cycloalkyl, CF3, OCF3, CN, —OR5, —NR5R10, —CH2OR5, —C(O)2R5, —C(O)NR5R10, —C(O)R5, —SR10, —S(O)2R10, —S(O)2NR5R10, —N(R5)S(O)2R10, —N(R5)C(O)R10and —N(R5)C(O)NR5R10;

m is 0 to 4;

n is 1 to 4; and

p is 1 to 4,

with the proviso that when R2is phenyl, R3is not alkyl, alkynyl or halogen, and that when R2is aryl, R is not

and with the further proviso that when R is arylalkyl, then any heteroaryl substituent on the aryl of said arylalkyl contains at least three heteroatoms.

The compounds of Formula III can be useful as protein kinase inhibitors and can be useful in the treatment and prevention of proliferative diseases, for example, cancer, inflammation and arthritis. They may also be useful in the treatment of neurodegenerative diseases such Alzheimer's disease, cardiovascular diseases, viral diseases and fungal diseases.

DETAILED DESCRIPTION

In one embodiment, the present invention discloses pyrazolo[1,5-a]pyrimidine compounds which are represented by structural Formula III, or a pharmaceutically acceptable salt or solvate thereof, wherein the various moieties are as described above.

In another embodiment, R is —(CHR5)n-aryl, —(CHR5)n-heteroaryl, —(CHR5)n-heteroaryl (with said heteroaryl being substituted with an additional, same or different, heteroaryl), —(CHR5)n-heterocyclyl (with said heterocyclyl being substituted with an additional, same or different, heterocyclyl), or

wherein said alkyl, aryl, heteroaryl, cycloalkyl and the heterocyclyl structures shown immediately above for R3are optionally substituted with one or more moieties which can be the same or different, each moiety being independently selected from the group consisting of halogen, CF3, OCF3, lower alkyl, CN, —C(O)R5, —S(O2)R5, —C(═NH)—NH2, —C(═CN)—NH2, hydroxyalkyl, alkoxycarbonyl, —SR5, and OR5, with the proviso that no carbon adjacent to a nitrogen atom on a heterocyclyl ring carries a —OR5moiety.

In another embodiment, R4is H or lower alkyl.

In another embodiment, R5is H, lower alkyl or cycloalkyl.

In another embodiment, n is 1 to 2.

In an additional embodiment, R is —(CHR5)n-aryl, —(CHR5)n-heteroaryl.

In an additional embodiment, R2is lower alkyl, alkynyl or Br.

wherein said alkyl, aryl and the heterocyclyl moieties shown immediately above for R3are optionally substituted with one or more moieties which can be the same or different, each moiety being independently selected from the group consisting of halogen, CF3, lower alkyl, hydroxyalkyl, alkoxy, —S(O2)R5, and CN.

In an additional embodiment, R4is H.

In an additional embodiment, R8is alkyl or hydroxyalkyl.

In an additional embodiment, n is 1.

In an additional embodiment, p is 1 or 2.

Another embodiment discloses the inventive compounds shown in Table 1, which exhibited CDK2 inhibitory activity of about 0.0001 μM to >about 5 μM. The assay methods are described later (from page 333 onwards).

Another embodiment of the invention discloses the following compounds, which exhibited CDK2 inhibitory activity of about 0.0001 μM to about 0.5 μM:

Another embodiment of the invention discloses the following compounds, which exhibited CDK2 inhibitory activity of about 0.0001 μM to about 0.1 μM:

As used above, and throughout this disclosure, the following terms, unless otherwise indicated, shall be understood to have the following meanings:

“Patient” includes both human and animals.

“Mammal” means humans and other mammalian animals.

“Alkyl” means an aliphatic hydrocarbon group which may be straight or branched and comprising about 1 to about 20 carbon atoms in the chain. Preferred alkyl groups contain about 1 to about 12 carbon atoms in the chain. More preferred alkyl groups contain about 1 to about 6 carbon atoms in the chain. Branched means that one or more lower alkyl groups such as methyl, ethyl or propyl, are attached to a linear alkyl chain. “Lower alkyl” means a group having about 1 to about 6 carbon atoms in the chain which may be straight or branched. The term “substituted alkyl” means that the alkyl group may be substituted by one or more substituents which may be the same or different, each substituent being independently selected from the group consisting of halo, alkyl, aryl, cycloalkyl, cyano, hydroxy, alkoxy, alkylthio, amino, —NH(alkyl), —NH(cycloalkyl), —N(alkyl)2, carboxy and —C(O)O-alkyl. Non-limiting examples of suitable alkyl groups include methyl, ethyl, n-propyl, isopropyl and t-butyl.

“Alkynyl” means an aliphatic hydrocarbon group containing at least one carbon-carbon triple bond and which may be straight or branched and comprising about 2 to about 15 carbon atoms in the chain. Preferred alkynyl groups have about 2 to about 12 carbon atoms in the chain; and more preferably about 2 to about 4 carbon atoms in the chain. Branched means that one or more lower alkyl groups such as methyl, ethyl or propyl, are attached to a linear alkynyl chain. “Lower alkynyl” means about 2 to about 6 carbon atoms in the chain which may be straight or branched. Non-limiting examples of suitable alkynyl groups include ethynyl, propynyl, 2-butynyl and 3-methylbutynyl. The term “substituted alkynyl” means that the alkynyl group may be substituted by one or more substituents which may be the same or different, each substituent being independently selected from the group consisting of alkyl, aryl and cycloalkyl.

“Aryl” means an aromatic monocyclic or multicyclic ring system comprising about 6 to about 14 carbon atoms, preferably about 6 to about 10 carbon atoms. The aryl group can be optionally substituted with one or more “ring system substituents” which may be the same or different, and are as defined herein. Non-limiting examples of suitable aryl groups include phenyl and naphthyl.

“Aralkyl” or “arylalkyl” means an aryl-alkyl-group in which the aryl and alkyl are as previously described. Preferred aralkyls comprise a lower alkyl group. Non-limiting examples of suitable aralkyl groups include benzyl, 2-phenethyl and naphthalenylmethyl. The bond to the parent moiety is through the alkyl.

“Alkylaryl” means an alkyl-aryl- group in which the alkyl and aryl are as previously described. Preferred alkylaryls comprise a lower alkyl group. Non-limiting example of a suitable alkylaryl group is tolyl. The bond to the parent moiety is through the aryl.

“Cycloalkyl” means a non-aromatic mono- or multicyclic ring system comprising about 3 to about 10 carbon atoms, preferably about 5 to about 10 carbon atoms. Preferred cycloalkyl rings contain about 5 to about 7 ring atoms. The cycloalkyl can be optionally substituted with one or more “ring system substituents” which may be the same or different, and are as defined above. Non-limiting examples of suitable monocyclic cycloalkyls include cyclopropyl, cyclopentyl, cyclohexyl, cycloheptyl and the like. Non-limiting examples of suitable multicyclic cycloalkyls include 1-decalinyl, norbornyl, adamantyl and the like, as well as partially saturated species such as, for example, indanyl, tetrahydronaphthyl and the like.

“Ring system substituent” means a substituent attached to an aromatic or non-aromatic ring system which, for example, replaces an available hydrogen on the ring system. Ring system substituents may be the same or different, each being independently selected from the group consisting of alkyl, alkenyl, alkynyl, aryl, heteroaryl, aralkyl, alkylaryl, heteroaralkyl, heteroarylalkenyl, heteroarylalkynyl, alkylheteroaryl, hydroxy, hydroxyalkyl, alkoxy, aryloxy, aralkoxy, acyl, aroyl, halo, nitro, cyano, carboxy, alkoxycarbonyl, aryloxycarbonyl, aralkoxycarbonyl, alkylsulfonyl, arylsulfonyl, heteroarylsulfonyl, alkylthio, arylthio, heteroarylthio, aralkylthio, heteroaralkylthio, cycloalkyl, heterocyclyl, —C(═N—CN)—NH2, —C(═NH)—NH2, —C(═NH)—NH(alkyl), Y1Y2N—, Y1Y2N-alkyl-, Y1Y2NC(O)—, Y1Y2NSO2— and —SO2NY1Y2, wherein Y1and Y2can be the same or different and are independently selected from the group consisting of hydrogen, alkyl, aryl, cycloalkyl, and aralkyl. “Ring system substituent” may also mean a single moiety which simultaneously replaces two available hydrogens on two adjacent carbon atoms (one H on each carbon) on a ring system. Examples of such moiety are methylene dioxy, ethylenedioxy, —C(CH3)2— and the like which form moieties such as, for example:

“Heterocyclyl” means a non-aromatic saturated monocyclic or multicyclic ring system comprising about 3 to about 10 ring atoms, preferably about 5 to about 10 ring atoms, in which one or more of the atoms in the ring system is an element other than carbon, for example nitrogen, oxygen or sulfur, alone or in combination. There are no adjacent oxygen and/or sulfur atoms present in the ring system. Preferred heterocyclyls contain about 5 to about 6 ring atoms. The prefix aza, oxa or thia before the heterocyclyl root name means that at least a nitrogen, oxygen or sulfur atom respectively is present as a ring atom. Any —NH in a heterocyclyl ring may exist protected such as, for example, as an —N(Boc), —N(CBz), —N(Tos) group and the like; such protections are also considered part of this invention. The heterocyclyl can be optionally substituted by one or more “ring system substituents” which may be the same or different, and are as defined herein. The nitrogen or sulfur atom of the heterocyclyl can be optionally oxidized to the corresponding N-oxide, S-oxide or S,S-dioxide. Non-limiting examples of suitable monocyclic heterocyclyl rings include piperidyl, pyrrolidinyl, piperazinyl, morpholinyl, thiomorpholinyl, thiazolidinyl, 1,4-dioxanyl, tetrahydrofuranyl, tetrahydrothiophenyl, lactam, lactone, and the like.

It should be noted that in hetero-atom containing ring systems of this invention, there are no hydroxyl groups on carbon atoms adjacent to a N, O or S, as well as there are no N or S groups on carbon adjacent to another heteroatom. Thus, for example, in the ring:

there is no —OH attached directly to carbons marked 2 and 5.

It should also be noted that tautomeric forms such as, for example, the moieties:

are considered equivalent in certain embodiments of this invention.

“Alkynylalkyl” means an alkynyl-alkyl- group in which the alkynyl and alkyl are as previously described. Preferred alkynylalkyls contain a lower alkynyl and a lower alkyl group. The bond to the parent moiety is through the alkyl. Non-limiting examples of suitable alkynylalkyl groups include propargylmethyl.

“Heteroaralkyl” means a heteroaryl-alkyl- group in which the heteroaryl and alkyl are as previously described. Preferred heteroaralkyls contain a lower alkyl group. Non-limiting examples of suitable aralkyl groups include pyridylmethyl, and quinolin-3-ylmethyl. The bond to the parent moiety is through the alkyl.

“Hydroxyalkyl” means a HO-alkyl- group in which alkyl is as previously defined. Preferred hydroxyalkyls contain lower alkyl. Non-limiting examples of suitable hydroxyalkyl groups include hydroxymethyl and 2-hydroxyethyl.

“Acyl” means an H—C(O)—, alkyl-C(O)— or cycloalkyl-C(O)—, group in which the various groups are as previously described. The bond to the parent moiety is through the carbonyl. Preferred acyls contain a lower alkyl. Non-limiting examples of suitable acyl groups include formyl, acetyl and propanoyl.

“Aroyl” means an aryl-C(O)— group in which the aryl group is as previously described. The bond to the parent moiety is through the carbonyl. Non-limiting examples of suitable groups include benzoyl and 1-naphthoyl.

“Alkoxy” means an alkyl-O— group in which the alkyl group is as previously described. Non-limiting examples of suitable alkoxy groups include methoxy, ethoxy, n-propoxy, isopropoxy and n-butoxy. The bond to the parent moiety is through the ether oxygen.

“Aryloxy” means an aryl-O— group in which the aryl group is as previously described. Non-limiting examples of suitable aryloxy groups include phenoxy and naphthoxy. The bond to the parent moiety is through the ether oxygen.

“Aralkyloxy” means an aralkyl-O— group in which the aralkyl group is as previously described. Non-limiting examples of suitable aralkyloxy groups include benzyloxy and 1- or 2-naphthalenemethoxy. The bond to the parent moiety is through the ether oxygen.

“Alkylthio” means an alkyl-S— group in which the alkyl group is as previously described. Non-limiting examples of suitable alkylthio groups include methylthio and ethylthio. The bond to the parent moiety is through the sulfur.

“Arylthio” means an aryl-S— group in which the aryl group is as previously described. Non-limiting examples of suitable arylthio groups include phenylthio and naphthylthio. The bond to the parent moiety is through the sulfur.

“Aralkylthio” means an aralkyl-S— group in which the aralkyl group is as previously described. Non-limiting example of a suitable aralkylthio group is benzylthio. The bond to the parent moiety is through the sulfur.

“Alkoxycarbonyl” means an alkyl-O—CO— group. Non-limiting examples of suitable alkoxycarbonyl groups include methoxycarbonyl and ethoxycarbonyl. The bond to the parent moiety is through the carbonyl.

“Aryloxycarbonyl” means an aryl-O—C(O)— group. Non-limiting examples of suitable aryloxycarbonyl groups include phenoxycarbonyl and naphthoxycarbonyl. The bond to the parent moiety is through the carbonyl.

“Aralkoxycarbonyl” means an aralkyl-O—C(O)— group. Non-limiting example of a suitable aralkoxycarbonyl group is benzyloxycarbonyl. The bond to the parent moiety is through the carbonyl.

“Alkylsulfonyl” means an alkyl-S(O2)— group. Preferred groups are those in which the alkyl group is lower alkyl. The bond to the parent moiety is through the sulfonyl.

“Arylsulfonyl” means an aryl-S(O2)— group. The bond to the parent moiety is through the sulfonyl.

The term “isolated” or “in isolated form” for a compound refers to the physical state of said compound after being isolated from a synthetic process or natural source or combination thereof. The term “purified” or “in purified form” for a compound refers to the physical state of said compound after being obtained from a purification process or processes described herein or well known to the skilled artisan, in sufficient purity to be characterizable by standard analytical techniques described herein or well known to the skilled artisan.

It should also be noted that any heteroatom with unsatisfied valences in the text, schemes, examples and Tables herein is assumed to have the hydrogen atom(s) to satisfy the valences.

When any variable (e.g., aryl, heterocycle, R2, etc.) occurs more than one time in any constituent or in Formula III, its definition on each occurrence is independent of its definition at every other occurrence.

Prodrugs and solvates of the compounds of the invention are also contemplated herein. The term “prodrug”, as employed herein, denotes a compound that is a drug precursor which, upon administration to a subject, undergoes chemical conversion by metabolic or chemical processes to yield a compound of Formula III or a salt and/or solvate thereof. A discussion of prodrugs is provided in T. Higuchi and V. Stella,Pro-drugs as Novel Delivery Systems(1987) 14 of the A.C.S. Symposium Series, and inBioreversible Carriers in Drug Design, (1987) Edward B. Roche, ed., American Pharmaceutical Association and Pergamon Press, both of which are incorporated herein by reference thereto.

“Effective amount” or “therapeutically effective amount” is meant to describe an amount of compound or a composition of the present invention effective in inhibiting the CDK(s) and thus producing the desired therapeutic, ameliorative, inhibitory or preventative effect.

Compounds of Formula III, and salts, solvates and prodrugs thereof, may exist in their tautomeric form (for example, as an amide or imino ether). All such tautomeric forms are contemplated herein as part of the present invention.

The compounds according to the invention have pharmacological properties; in particular, the compounds of Formula III can be inhibitors of protein kinases such as, for example, the inhibitors of the cyclin-dependent kinases, mitogen-activated protein kinase (MAPK/ERK), glycogen synthase kinase 3(GSK3beta) and the like. The cyclin dependent kinases (CDKs) include, for example, CDC2 (CDK1), CDK2, CDK4, CDK5, CDK6, CDK7 and CDK8. The novel compounds of Formula III are expected to be useful in the therapy of proliferative diseases such as cancer, autoimmune diseases, viral diseases, fungal diseases, neurological/neurodegenerative disorders, arthritis, inflammation, anti-proliferative (e.g., ocular retinopathy), neuronal, alopecia and cardiovascular disease. Many of these diseases and disorders are listed in U.S. Pat. No. 6,413,974 cited earlier, the disclosure of which is incorporated herein.

More specifically, the compounds of Formula III can be useful in the treatment of a variety of cancers, including (but not limited to) the following: carcinoma, including that of the bladder, breast, colon, kidney, liver, lung, including small cell lung cancer, esophagus, gall bladder, ovary, pancreas, stomach, cervix, thyroid, prostate, and skin, including squamous cell carcinoma;

hematopoietic tumors of myeloid lineage, including acute and chronic myelogenous leukemias, myelodysplastic syndrome and promyelocytic leukemia;

tumors of mesenchymal origin, including fibrosarcoma and rhabdomyosarcoma;

tumors of the central and peripheral nervous system, including astrocytoma, neuroblastoma, glioma and schwannomas; and

Due to the key role of CDKs in the regulation of cellular proliferation in general, inhibitors could act as reversible cytostatic agents which may be useful in the treatment of any disease process which features abnormal cellular proliferation, e.g., benign prostate hyperplasia, familial adenomatosis polyposis, neuro-fibromatosis, atherosclerosis, pulmonary fibrosis, arthritis, psoriasis, glomerulonephritis, restenosis following angioplasty or vascular surgery, hypertrophic scar formation, inflammatory bowel disease, transplantation rejection, endotoxic shock, and fungal infections.

Compounds of Formula III may also be useful in the treatment of Alzheimer's disease, as suggested by the recent finding that CDK5 is involved in the phosphorylation of tau protein (J. Biochem, (1995) 117, 741-749).

Compounds of Formula III may induce or inhibit apoptosis. The apoptotic response is aberrant in a variety of human diseases. Compounds of Formula III, as modulators of apoptosis, will be useful in the treatment of cancer (including but not limited to those types mentioned hereinabove), viral infections (including but not limited to herpevirus, poxvirus, Epstein-Barr virus, Sindbis virus and adenovirus), prevention of AIDS development in HIV-infected individuals, autoimmune diseases (including but not limited to systemic lupus, erythematosus, autoimmune mediated glomerulonephritis, rheumatoid arthritis, psoriasis, inflammatory bowel disease, and autoimmune diabetes mellitus), neurodegenerative disorders (including but not limited to Alzheimer's disease, AIDS-related dementia, Parkinson's disease, amyotrophic lateral sclerosis, retinitis pigmentosa, spinal muscular atrophy and cerebellar degeneration), myelodysplastic syndromes, aplastic anemia, ischemic injury associated with myocardial infarctions, stroke and reperfusion injury, arrhythmia, atherosclerosis, toxin-induced or alcohol related liver diseases, hematological diseases (including but not limited to chronic anemia and aplastic anemia), degenerative diseases of the musculoskeletal system (including but not limited to osteoporosis and arthritis) aspirin-sensitive rhinosinusitis, cystic fibrosis, multiple sclerosis, kidney diseases and cancer pain.

Compounds of Formula II, as inhibitors of the CDKs, can modulate the level of cellular RNA and DNA synthesis. These agents would therefore be useful in the treatment of viral infections (including but not limited to HIV, human papilloma virus, herpesvirus, poxvirus, Epstein-Barr virus, Sindbis virus and adenovirus).

Compounds of Formula III may also be useful in the chemoprevention of cancer. Chemoprevention is defined as inhibiting the development of invasive cancer by either blocking the initiating mutagenic event or by blocking the progression of pre-malignant cells that have already suffered an insult or inhibiting tumor relapse.

Compounds of Formula III may also be useful in inhibiting tumor angiogenesis and metastasis.

Compounds of Formula III may also act as inhibitors of other protein kinases, e.g., protein kinase C, her2, raf 1, MEK1, MAP kinase, EGF receptor, PDGF receptor, IGF receptor, PI3 kinase, weel kinase, Src, Abl and thus be effective in the treatment of diseases associated with other protein kinases.

Another aspect of this invention is a method of treating a mammal (e.g., human) having a disease or condition associated with the CDKs by administering a therapeutically effective amount of at least one compound of Formula III, or a pharmaceutically acceptable salt or solvate of said compound to the mammal.

A preferred dosage is about 0.001 to 500 mg/kg of body weight/day of the compound of Formula III. An especially preferred dosage is about 0.01 to 25 mg/kg of body weight/day of a compound of Formula III, or a pharmaceutically acceptable salt or solvate of said compound.

If formulated as a fixed dose, such combination products employ the compounds of this invention within the dosage range described herein and the other pharmaceutically active agent or treatment within its dosage range. For example, the CDC2 inhibitor olomucine has been found to act synergistically with known cytotoxic agents in inducing apoptosis (J. Cell Sci., (1995) 108, 2897. Compounds of Formula III may also be administered sequentially with known anticancer or cytotoxic agents when a combination formulation is inappropriate. The invention is not limited in the sequence of administration; compounds of Formula III may be administered either prior to or after administration of the known anticancer or cytotoxic agent. For example, the cytotoxic activity of the cyclin-dependent kinase inhibitor flavopiridol is affected by the sequence of administration with anticancer agents.Cancer Research, (1997) 57, 3375. Such techniques are within the skills of persons skilled in the art as well as attending physicians.

Accordingly, in an aspect, this invention includes combinations comprising an amount of at least one compound of Formula II, or a pharmaceutically acceptable salt or solvate thereof, and an amount of one or more anti-cancer treatments and anti-cancer agents listed above wherein the amounts of the compounds/treatments result in desired therapeutic effect.

The pharmacological properties of the compounds of this invention may be confirmed by a number of pharmacological assays. The exemplified pharmacological assays which are described later have been carried out with the compounds according to the invention and their salts.

This invention is also directed to pharmaceutical compositions which comprise at least one compound of Formula II, or a pharmaceutically acceptable salt or solvate of said compound and at least one pharmaceutically acceptable carrier.

For preparing pharmaceutical compositions from the compounds described by this invention, inert, pharmaceutically acceptable carriers can be either solid or liquid. Solid form preparations include powders, tablets, dispersible granules, capsules, cachets and suppositories. The powders and tablets may be comprised of from about 5 to about 95 percent active ingredient. Suitable solid carriers are known in the art, e.g., magnesium carbonate, magnesium stearate, talc, sugar or lactose. Tablets, powders, cachets and capsules can be used as solid dosage forms suitable for oral administration. Examples of pharmaceutically acceptable carriers and methods of manufacture for various compositions may be found in A. Gennaro (ed.),Remington's Pharmaceutical Sciences,18thEdition, (1990), Mack Publishing Co., Easton, Pa.

Also included are solid form preparations that are intended to be converted, shortly before use, to liquid form preparations for either oral or parenteral administration. Such liquid forms include solutions, suspensions and emulsions.

The compounds of this invention may also be delivered subcutaneously.

Preferably the compound is administered orally.

The quantity of active compound in a unit dose of preparation may be varied or adjusted from about 1 mg to about 100 mg, preferably from about 1 mg to about 50 mg, more preferably from about 1 mg to about 25 mg, according to the particular application.

The actual dosage employed may be varied depending upon the requirements of the patient and the severity of the condition being treated. Determination of the proper dosage regimen for a particular situation is within the skill of the art. For convenience, the total daily dosage may be divided and administered in portions during the day as required.

The amount and frequency of administration of the compounds of the invention and/or the pharmaceutically acceptable salts thereof will be regulated according to the judgment of the attending clinician considering such factors as age, condition and size of the patient as well as severity of the symptoms being treated. A typical recommended daily dosage regimen for oral administration can range from about 1 mg/day to about 500 mg/day, preferably 1 mg/day to 200 mg/day, in two to four divided doses.

Another aspect of this invention is a kit comprising a therapeutically effective amount of at least one compound of Formula II, or a pharmaceutically acceptable salt or solvate of said compound and a pharmaceutically acceptable carrier, vehicle or diluent.

Yet another aspect of this invention is a kit comprising an amount of at least one compound of Formula II, or a pharmaceutically acceptable salt or solvate of said compound and an amount of at least one anticancer therapy and/or anti-cancer agent listed above, wherein the amounts of the two or more ingredients result in desired therapeutic effect.

The invention disclosed herein is exemplified by the following preparations and examples which should not be construed to limit the scope of the disclosure. Alternative mechanistic pathways and analogous structures will be apparent to those skilled in the art.

Where NMR data are presented,1H spectra were obtained on either a Varian VXR-200 (200 MHz,1H), Varian Gemini-300 (300 MHz) or XL-400 (400 MHz) and are reported as ppm down field from Me4Si with number of protons, multiplicities, and coupling constants in Hertz indicated parenthetically. Where LC/MS data are presented, analyses was performed using an Applied Biosystems API-100 mass spectrometer and Shimadzu SCL-10A LC column: Altech platinum C18, 3 micron, 33 mm×7 mm ID; gradient flow: 0 min—10% CH3CN, 5 min—95% CH3CN, 7 min—95% CH3CN, 7.5 min—10% CH3CN, 9 min—stop. The retention time and observed parent ion are given.

The following solvents and reagents may be referred to by their abbreviations in parenthesis:

Thin layer chromatography: TLC

nuclear magnetic resonance spectroscopy: NMR

liquid chromatography mass spectrometry: LCMS

high resolution mass spectrometry: HRMS

room temperature or rt (ambient): about 25° C.

EXAMPLES

In general, the compounds described in this invention can be prepared through the general routes described below in Scheme 1. Treatment of the

starting nitrile with potassium t-butoxide and ethyl formate gives rise to the intermediate enol 2 which upon treatment with hydrazine gives the desired substituted 3-aminopyrazole. Condensation of compounds of type 3 with the appropriately functionalized keto ester of type 5 gives rise to the pyridones 6 as shown in Scheme 3. The keto esters used in this general route are either commercially available or can be made as illustrated in Scheme 2.

The chlorides of type 9 can be prepared by treatment of the pyridones 8 with POCl3. When R2is equal to H, substitution in this position is possible on the compounds of type 9 by electrophilic halogenation, acylation, and various other electrophilic aromatic substitutions.

Introduction of the N7-amino functionality can be accomplished through displacement of the chloride of compounds of type 9 by reaction with the appropriate amine as shown in Scheme 3.

Condensation of compounds of type 7 with the appropriately functionalized malonate ester of type 11 gives rise to the pyridones 13 as shown in Scheme 4.

The chlorides of type 14 can be prepared by treatment of the pyridones 13 with POCl3. When R2is H, substitution in this position is possible on compounds of type 9 by electrophilic halogenation, acylation, and various other electrophilic aromatic substitutions.

Incorporation of the N7-amino functionality can be accomplished through regioselective displacement of the chloride of compounds of type 14. Incorporation of the N5-amino functionality by addition of an appropriate amine at higher temperature.

Alternatively, condensations of the aminopyrazoles of type 7 with an appropriately functionalize keto ester as prepared in Scheme 5, leads to compounds of type 13 as shown in Scheme 4.

The chlorides of type 14 can be prepared by treatment of the pyridones 13 with POCl3. When R2is equal to H, substitution in this position is possible on compounds of type 14 by electrophilic halogenation, acylation, and various other electrophilic aromatic substitutions.

Incorporation of the N7-amino functionality can be accomplished through displacement of the chloride of compounds of type 15.

Preparative Examples

A procedure in German patent DE 19834047 A1, p 19 was followed. To a solution of KOtBu (6.17 g, 0.055 mol) in anhydrous THF (40 mL) was added, dropwise, a solution of cyclopropylacetonitrile (2.0 g, 0.025 mol) and ethyl formate (4.07 g, 0.055 mol) in anhydrous THF (4 mL). A precipitate formed immediately. This mixture was stirred for 12 hr. It was concentrated under vacuum and the residue stirred with Et2O (50 mL). The resulting residue was decanted and washed with Et2O (2×50 mL) and Et2O removed from the residue under vacuum. The residue was dissolved in cold H2O (20 mL) and pH adjusted to 4-5 with 12 N HCl. The mixture was extracted with CH2Cl2(2×50 mL). The organic layers were combined, dried over MgSO4and concentrated under vacuum to give the aldehyde as a tan liquid.

The product from Preparative Example 1, Step A (2.12 g, 0.0195 mol), NH2NH2.H2O (1.95 g, 0.039 mol) and 1.8 g (0.029 mole) of glacial CH3CO2H (1.8 g, 0.029 mol) were dissolved in EtOH (10 mL). It was refluxed for 6 hr and concentrated under vacuum. The residue was slurried in CH2Cl2(150 mL) and the pH adjusted to 9 with 1N NaOH. The organic layer was washed with brine, dried over MgSO4and concentrated under vacuum to give the product as a waxy orange solid.

By essentially the same procedure set forth in Preparative Example 1, only substituting the nitrile shown in Column 2 of Table 2, the compounds in Column 3 of Table 2 were prepared:

2-Carbomethoxycyclopentanone (6.6 ml, 0.05 mol) in THF (15 ml) was added dropwise to a vigorously stirred suspension of NaH (60% in mineral oil, 4 g, 0.1 mol) in THF (100 ml) at 0-10° C. When bubbling ceased, the reaction mixture was treated at the same temperature with ClCOOMe (7.8 ml, 0.1 mol) in THF (15 ml). The resulted off-white suspension was stirred for 30 minutes at room temperature and 30 minutes under reflux. The reaction was monitored by TLC for disappearance of starting material. The reaction mixture was quenched with water carefully and partitioned between ethyl acetate and saturated solution of ammonium chloride in a funnel. Shaken and separated, the organic layer was washed with brine and dried over anhydrous sodium sulfate. Solvents were removed, and the residue was purified by flash chromatography, eluted with 5% and then 10% ethyl acetate in hexane. 9.4 g colorless oil was obtained with 94% yield.1H NMR (CDCl3) δ 3.90 (s, 3H), 3.73 (s, 3H), 2.65 (m, 4H), 1.98 (m, 2H).

To lithium diisopropylamide solution in THF (2.0 N, 0.04 mol) at −65° C., was added dropwise 2,2-dicarbomethoxycyclopentanone (4 g, 0.02 mol) in THF (60 ml). The resulted reaction mixture was stirred at the same temperature before adding methyl chloroformate (1.54 ml, 0.02 mol). Reaction mixture stirred for an hour and poured into saturated ammonium chloride solution with some ice. This solution was extracted three times with ether, and the combined ethearal layers were dried over sodium sulfate. Solvents were removed in vacuo, and the residue was purified by flash chromatography, eluted with 30% increased to 50% ethyl acetate in hexane. 2.3 g yellowish oil was obtained with 58% yield.1H NMR (CDCl3) δ 3.77 (s, 6H), 3.32 (t, 1H), 3.60-3.10 (m, 4H).

The reactions were done as outlined in (K. O. Olsen,J. Org. Chem., (1987) 52, 4531-4536). Thus, to a stirred solution of lithium diisopropylamide in THF at −65 to −70 C was added freshly distilled ethyl acetate, dropwise. The resulting solution was stirred for 30 min and the acid chloride was added as a solution in THF. The reaction mixture was stirred at −65 to −70° C. for 30 min and then terminated by the addition of 1 N HCl solution. The resulting two-phased mixture was allowed to warm to ambient temperature. The resulting mixture was diluted with EtOAc (100 mL) the organic layer was collected. The aqueous layer was extracted with EtOAc (100 mL). The organic layers were combined, washed with brine, dried (Na2SO4), and concentrated in vacuo to give the crude β-keto esters, which were used in the subsequent condensations.

By essentially the same procedure set forth in Preparative Example 6 only substituting the acid chlorides shown in Column 2 of Table 3, the h-keto esters shown in Column 3 of Table 3 were prepared:

To a solution of the acid in THF was added Et3N, followed by isobutyl chloroformate at −20 to −30° C. After the mixture was stirred for 30 min at −20 to −30° C., triethylamine hydrochloride was filtered off under argon, and the filtrate was added to the LDA-EtOAc reaction mixture (prepared as outlined in Method A) at −65 to −70° C. After addition of 1 N HCl, followed by routine workup of the reaction mixture and evaporation of the solvents, the crude β-keto esters were isolated. The crude material was used in the subsequent condensations.

By essentially the same conditions set forth in Preparative Example 20 only substituting the carboxylic acid shown in Column 2 of Table 4, the compounds shown in Column 3 of Table 4 were prepared:

A solution of 3-aminopyrazole (2.0 g, 24.07 mmol) and ethyl benzylacetate (4.58 mL, 1.1 eq.) in ACOH (15 mL) was heated at reflux for 3 hours. The reaction mixture was cooled to room temperature and concentrated hours. The resulting solid was diluted with EtOAc and filtered to give a white solid (2.04 g, 40% yield).

By essentially the same procedure set forth in Preparative Example 29 only substituting the aminopyrazole shown in Column 2 of Table 5 and the ester shown in Column 3 of Table 5, the compounds shown in Column 4 of Table 5 were prepared:

A procedure in U.S. Pat. No. 3,907,799 was followed. Sodium (2.3 g, 2 eq.) was added to EtOH (150 mL) portionwise. When the sodium was completely dissolved, 3-aminopyrazole (4.2 g, 0.05 mol) and diethyl malonate (8.7 g, 1.1 eq.) were added and the resulting solution heated to reflux for 3 hours. The resulting suspension was cooled to room temperature and filtered. The filter cake was washed with EtOH (100 mL) and dissolved in water (250 mL). The resulting solution was cooled in an ice bath and the pH adjusted to 1-2 with concentrated HCl. The resulting suspension was filtered, washed with water (100 mL) and dried under vacuum to give a white solid (4.75 g, 63% yield).

By essentially the same procedure set forth in Preparative Example 75 only substituting the compound shown in Column 2 of Table 6, the compounds shown in Column 3 of Table 6 are prepared:

A solution of the compound prepared in Preparative Example 29 (1.0 g, 4.73 mmol) in POCl3(5 mL) and pyridine (0.25 mL) was stirred at room temperature 3 days. The resulting slurry was diluted with Et2O, filtered, and the solid residue washed with Et2O. The combined Et2O washings were cooled to 0° C. and treated with ice. When the vigorous reaction ceased, the resulting mixture was diluted with H2O, separated, and the aqueous layer extracted with Et2O. The combined organics were washed with H2O and saturated NaCl, dried over Na2SO4, filtered, and concentrated to give a pale yellow solid (0.86 g, 79% yield). LCMS: MH+=230.

By essentially the same procedure set forth in Preparative Example 79, only substituting the compound shown in Column 2 of Table 7, the compounds shown in Column 3 of Table 7 were prepared:

POCl3(62 mL) was cooled to 5° C. under nitrogen and dimethylaniline (11.4 g, 2.8 eq.) and the compound prepared in Preparative Example 75 (4.75 g, 0.032 mol). The reaction mixture was warmed to 60° C. and stirred overnight. The reaction mixture was cooled to 30° C. and the POCl3was distilled off under reduced pressure. The residue was dissolved in CH2Cl2(300 mL) and poured onto ice. After stirring 15 minutes, the pH of the mixture was adjusted to 7-8 with solid NaHCO3. The layers were separated and the organic layer was washed with H2O (3×200 mL), dried over MgSO4, filtered, and concentrated. The crude product was purified by flash chromatography using a 50:50 CH2Cl2:hexanes solution as eluent to elute the dimethyl aniline. The eluent was then changed to 75:25 CH2Cl2:hexanes to elute the desired product (4.58 g, 77% yield). MS: MH+=188.

By essentially the same procedure set forth in Preparative Example 123 only substituting the compound in Column 2 of Table 8, the compounds shown in Column 3 of Table 8 are prepared:

A solution of the compound prepared in Preparative Example 79 (0.10 g, 0.435 mmol) in CH3CN (3 mL) was treated with NBS (0.085 g, 1.1 eq.). The reaction mixture was stirred at room temperature 1 hour and concentrated under reduced pressure. The crude product was purified by flash chromatography using a 20% EtOAc-in-hexanes solution as eluent (0.13 g, 100% yield). LCMS:MH+=308.

By essentially the same procedure set forth in Preparative Example 127 only substituting the compounds shown in Column 2 of Table 9, the compounds shown in Column 3 of Table 9 were prepared:

A solution of the compound prepared in Preparative Example 80 (0.3 g, 1.2 mmol) in CH3CN (15 mL) was treated with NCS (0.18 g, 1.1 eq.) and the resulting solution heated to reflux 4 hours. Additional NCS (0.032 g, 0.2 eq.) added and the resulting solution was stirred at reflux overnight. The reaction mixture was cooled to room temperature, concentrated in vacuo and the residue purified by flash chromatography using a 20% EtOAc in hexanes solution as eluent (0.28 g, 83% yield). LCMS: MH+=282.

By essentially the same procedure set forth in Preparative Example 165 only substituting the compound shown in Column 2 of Table 10, the compound shown in Column 3 of Table 10 was prepared:

By essentially the same procedure set forth in Preparative Example 165 only substituting N-iodosuccinimide, the above compound was prepared.

To a solution of the compound from Preparative Example 79 (1.0 g, 4.35 mmol) in DMF (6 mL) was added POCl3(1.24 mL, 3.05 eq.) and the resulting mixture was stirred at room temperature overnight. The reaction mixture was cooled to 0° C. and the excess POCl3was quenched by the addition of ice. The resulting solution was neutralized with 1N NaOH, diluted with H2O, and extracted with CH2Cl2. The combined organics were dried over Na2SO4, filtered and concentrated in vacuo. The crude product was purified by flash chromatography using a 5% MeOH in CH2Cl2solution as eluent (0.95 g, 85% yield). LCMS: MH+=258.

By essentially the same procedure set forth in Preparative Example 168 only substituting the compound prepared in Preparative Example 80, the above compound was prepared (0.45 g, 40% yield).

To a solution of the product of Preparative Example 169 (0.25 g, 0.97 mmol) in THF was added NaBH4(0.041 g, 1.1 eq.) and the resulting solution was stirred at room temperature overnight. The reaction mixture was quenched by the addition of H2O and extracted with CH2Cl2. The combined organics were dried over Na2SO4, filtered, and concentrated under reduced pressure. The crude product was purified by flash chromatography using a 60:40 hexanes:EtOAc mix as eluent (0.17 g, 69% yield). MS: MH+=260.

A solution of the compound prepared in Preparative Example 170 (0.12 g, 0.462 mmol), dimethyl sulfate (0.088 mL, 2.0 eq), 50% NaOH (0.26 mL) and catalytic Bu4NBr in CH2Cl2(4 mL) was stirred at room temperature overnight. The reaction mixture was diluted with H2O and extracted with CH2Cl2. The combined organics were dried over Na2SO4, filtered, and concentrated under reduced pressure. The crude product was purified by flash chromatography using a 30% EtOAc-in-hexanes solution as eluent (0.062 g, 48% yield).

To a solution of PPh3(4.07 g, 4.0 eq.) and CBr4(2.57 g, 2.0 eq.) in CH2Cl2(75 mL) at 0° C. was added the compound prepared in Preparative Example 168 (1.0 g, 3.88 mmol). The resulting solution was stirred at 0° C. for 1 hour and concentrated under reduced pressure. The residue was purified by flash chromatography using a 20% EtOAc in hexanes solution as eluent (1.07 g, 67% yield).

By essentially the same procedure set forth in Preparative Example 172 only substituting the compound prepared in Preparative Example 169 the above compound was prepared (0.5 g, 70% yield).

The compound prepared in Preparative Example 127 (3.08 g, 10.0 mmol), 2.0 M NH3in 2-propanol (50 mL, 100.0 mmol), and 37% aqueous NH3(10.0 mL) were stirred in a closed pressure vessel at 50° C. for 1 day. The solvent was evaporated and the crude product was purified by flash chromatography using 3:1 CH2Cl2:EtOAc as eluent. Pale yellow solid (2.30 g, 80%) was obtained. LCMS: M+=289.

By essentially the same procedure set forth in Preparative Example 174 only substituting the compound shown in Column 2 of Table 11, the compounds shown in Column 3 of Table 11 were prepared.

The compound prepared in Preparative Example 80 (0.3 g, 1.2 mmol), K2CO3(0.33 g, 2 eq.), and 4-aminomethylpyridine (0.13 mL, 1.1 eq.) was heated to reflux overnight. The reaction mixture was cooled to room temperature and concentrated under reduced pressure. The residue was diluted with H2O and extracted with CH2Cl2. The combined organics were dried over Na2SO4, filtered and, concentrated. The crude product was purified by flash chromatography using a 5% (10% NH4OH in MeOH) solution in CH2Cl2as eluent (0.051 g, 40% yield). LCMS: MH+=320.

By essentially the same procedure set forth in Preparative Example 181 only substituting the compound described in Preparative Example 92, the above compound was prepared. LCMS: MH+=370.

To a solution of the compound prepared in Preparative Example 123 (0.25 g, 1.3 mmol) in dioxane (5 mL) was added iPr2NEt (0.47 mL, 2.0 eq.) and 3-aminomethylpyridine (0.15 ml, 1.1 eq.). The resulting solution was stirred at room temperature 72 hours. The reaction mixture was diluted with H2O and extracted with EtOAc. The combined organics were washed with H2O and saturated NaCl, dried over Na2SO4, filtered, and concentrated in vacuo. The crude product was purified by flash chromatography using a 5% MeOH in CH2Cl2solution as eluent (0.29 g, 83% yield). MS: MH+=260.

By essentially the same procedure set forth in Preparative Example 183 only substituting the compound shown in Column 2 of Table 12, the compounds shown in Column 3 of Table 12 are prepared.

Preparative Example 188 and Preparative Example 189

To a solution of the compound prepared in Preparative Example 185 (1.18 g, 3.98 mmol) in THF (35 mL) at −78° C. was added LAH (4.78 mL, 1M in Et2O, 1.0 eq.) dropwise. The reaction mixture was stirred at −78° C. for 3 hours at which time additional LAH (2.0 mL, 1M in Et2O, 0.42 eq.) was added dropwise. The reaction mixture was stirred an additional 1.25 hours and quenched by the addition of saturated Na2SO4(8.5 mL). The reaction mixture was diluted with EtOAC (23 mL), H2O (2 mL), and CH3OH (50 mL). The resulting slurry was filtered through a plug of Celite. The Celite was washed with CH3OH and the filtrate dried with Na2SO4, filtered, and concentrated. The product was purified by flash chromatography using a CH2Cl2:CH3OH (93:7) solution as eluent to yield aldehyde as the first eluting product and alcohol as the second eluting product.

To a solution of the compound prepared in Preparative Example 188 (0.075 g, 0.30 mmol) in THF (2.0 mL) at 0° C. was added CH3MgBr (0.3 mL, 3.0M solution in Et2O, 3.0 eq.) dropwise. The resulting solution was stirred at 0° C. an additional 1.5 hours, warmed to room temperature, and stirred overnight. Additional CH3MgBr (0.15 mL, 3.0M in Et20, 1. eq.) was added and the resulting solution stirred an additional 1.5 hours. The reaction mixture was cooled to 0° C. and quenched by the addition of saturated NH4Cl. The resulting solution was diluted with CH2Cl2and H2O and extracted with CH2Cl2. The combined organics were washed with saturated NaCl and dried over Na2SO4, filtered, and concentrated. The crude product was purified by flash chromatography using a CH2Cl2:CH3OH (90:10) solution as eluent (0.048 g, 60% yield). MS: MH+=270.

By essentially the same procedure set forth in Preparative Example 190 only substituting the compound prepared in Preparative Example 185 and using excess MeMgBr (5 eq.), the above compound was prepared.

The compound prepared in Preparative Example 181 (0.29 g, 0.91 mmol), BOC2O (0.22 g, 1.1 eq), and DMAP (0.13 g, 1.1 eq.) in dioxane (10 mL) was stirred at room temperature 3 days. Additional BOC2O (0.10 g, 0.5 eq.) was added and the reaction mixture was stirred 4 hours. The reaction mixture was concentrated in vacuo, diluted with saturated NaHCO3(15 mL), and extracted with CH2Cl2(2×100 mL). The combined organics were dried over Na2SO4, filtered, and concentrated under reduce pressure. The crude product was purified by flash chromatography using a 5% (10% NH4OH in MeOH) solution in CH2Cl2as eluent (0.35 g, 91% yield). LCMS: MH+=420.

By essentially the same procedure set forth in Preparative Example 192 only substituting the compound prepared in Preparative Example 183, the above compound was prepared. MS: MH+=360.

By essentially the same procedure set forth in Preparative Example 192 only substituting the compound prepared in Preparative Example 184.1, the above compound was prepared. MS: MH+=454.

By essentially the same procedure set forth in Preparative Example 192 only substituting the above compound prepared in Preparative Example 187.11, the above compound was prepared (0.223 g, 88% yield). MS: MH+=528.

By essentially the same procedure set forth in Preparative Example 127 only substituting the compound prepared in Preparative Example 192, the above compound was prepared (0.38 g, 95% yield). LCMS: MH+=498.

By essentially the same procedure set forth in Preparative Example 195, only substituting the compound prepared in Preparative Example 193, the above compound was prepared (0.3 g, 83% yield). MS: MH+=438.

A solution of the compound prepared in Preparative Example 195 (0.15 g, 0.3 mmol), phenylboronic acid (0.073 g, 2.0 eq.), K3PO4(0.19 g, 3.0 eq.), and Pd(PPh3)4(0.017 g, 5 mol %) was heated at reflux in DME (16 mL) and H2O (4 mL) 7 hours. The resulting solution was cooled to room temperature, diluted with H2O (10 mL), and extracted with CH2Cl2(3×50 mL). The combined organics were dried over Na2SO4, filtered, and concentrated. The crude product was purified by flash chromatography using a 2.5% (10% NH4OH in MeOH) in CH2Cl2solution as eluent (0.16 g, 100% yield).

To a solution of 4-aminomethylpyridine (1.41 mL, 13.87 mmol) in CH2Cl2(50 mL) was added BOC2O (3.3 g, 1.1 eq.) and TEA and the resulting solution was stirred a room temperature 2 hours. The reaction mixture was diluted with H2O (50 mL) and extracted with CH2Cl2. The combined organics were dried over Na2SO4, filtered and concentrated under reduced pressure. The crude product was purified by flash chromatography using a 5% (10% NH4OH in MeOH) solution in CH2Cl2as eluent to give a yellow solid (2.62 g, 91% yield). LCMS: MH+=209.

By essentially the same procedure set forth in Preparative Example 198 only substituting 3-aminomethylpyridine, the above compound was prepared as a yellow oil (2.66 g, 92% yield). LCMS: MH+=209.

To a solution of the compound prepared in Preparative Example 198 (0.20 g, 0.96 mmol) in CH2Cl2(5 mL) at 0° C. was added m-CPBA (0.17 g, 1.0 eq) and the resulting solution stirred at 0° C. 2 hours and stored at 4° C. overnight at which time the reaction mixture was warmed to room temperature and stirred 3 hours. The reaction mixture was diluted with H2O and extracted with CH2Cl2. The combined organics were dried over Na2SO4, filtered, and concentrated. The crude product was purified by flash chromatography using a 10% (10% NH4OH in MeOH) solution as eluent: LCMS: MH+=255.

A solution of oxone (58.6 g) in H2O (250 mL) was added dropwise to the compound prepared in Preparative Example 199 (27 g, 0.13 mol) and NaHCO3(21.8 g, 2.0 eq.) in MeOH (200 mL) and H2O (250 mL). The resulting solution was stirred at room temperature overnight. The reaction mixture was diluted with CH2Cl2(500 mL) and filtered. The layers were separated and the aqueous layer extracted with CH2Cl2. The combined organics were dried over Na2SO4, filtered, and concentrated under reduced pressure to give a white solid (21.0 g, 72% yield). MS: MH+=255.

The compound prepared in Preparative Example 200 (0.29 g, 1.29 mmol) was stirred at room temperature in 4M HCl in dioxane (0.97 mL) 2 hours. The reaction mixture was concentrated in vacuo and used without further purification. LCMS: MH+=125.

By essentially the same procedure set forth in Preparative Example 202 only substituting the compound prepared in Preparative Example 201, the compound shown above was prepared. LCMS: MH+=125.

To 4-N-t-Butoxycarbonylaminopiperidine (0.8 g, 4.0 mmol) in CH2Cl2(10 mL) at 0° C. was added TEA (1.40 mL, 2.5 eq.) and 3-trifluoromethyl benzoyl chloride (1.05 g, 1.25 eq.). The resulting solution was stirred 15 minutes and warmed to room temperature and stirred 3 hours. The reaction mixture was diluted with CH2Cl2and washed with 5% Na2CO3(2×100 mL). The organic layer was dried over Na2SO4, filtered and concentrated to yield a pale yellow solid (quantitative crude yield).

To a solution of the compound prepared in Preparative Example 204 (1.0 g, 2.76 mmol) in CH2Cl2(15 mL) at 0° C. was added TFA (8 mL) and the resulting solution was stirred at 0° C. for 30 minutes and room temperature 1 hour. The reaction mixture was poured onto Na2CO3(40 g) and H2O (400 mL) added and the resulting mixture was extracted with CH2Cl2. The combined organics were dried over Na2SO4, filtered, and concentrated under reduced pressure. The crude product was purified by flash chromatography using a 20% (7N NH3in MeOH) solution in CH2Cl2as eluent (0.6 g, 82% yield).

To a solution of 6-chloronicotinamide (1 g, 6.39 mmol) in isoamyl alcohol (15 mL) at rt was added Na2CO3(0.81 g, 7.67 mmol) followed by methoxyethylamine (0.67 mL, 7.67 mmol). The mixture was heat at 130° C. for 16 h, cooled to rt, and was filtered thru a medium glass-fritted filter. The resulting filtrate was concentrated under reduced pressure and the resultant solid was triturated with Et2O (2×10 mL). The crude solid was placed under high vacuum to afford 1.2 g (96%) of a light yellow solid. M+H=196.

To a solution of amide (1.2 g, 6.12 mmol) from Preparative Example 206, Step A in THF (5 mL) at 0° C. was added a solution of BH3-THF (43 mL; 43 mmol) dropwise over 10 min. The resultant solution was warmed to rt and stirred for 14 h. The mixture was cooled to 0° C. and was sequentially treated with 6M HCl (35 mL), water (30 mL), and MeOH (150 mL). The mixture was stirred for 8 h and was concentrated under reduced pressure. The crude residue was triturated with MeOH, concentrated under reduced pressure, and placed under high vacuum to afford 1.6 g (82%) of a white solid as the dihydrochloride salt. M+H (free base)=182.0. This material was used crude in the coupling with 7-Cl adducts.

By essentially the same known procedure set forth in Preparative Example 206 only by utilizing the amines shown in Column 2 of Table 13 and the amines shown in Column 3 of Table 13 were prepared:

The above compound was prepared accordingly to the methods described in WO 91/18904.

The above compound was prepared accordingly to the methods described in U.S. Pat. No. 6,180,627 B1.

A solution of aldehyde (50 g, 0.41 mol) [WO 0232893] in MeOH (300 mL) was cooled to 0° C. and carefully treated with NaBH4(20 g, 0.53 mol in 6 batches) over 20 minutes. The reaction was then allowed to warm to 20° C. and was stirred for 4 hours. The mixture was again cooled to 0° C., carefully quenched with saturated aqueous NH4Cl, and concentrated. Flash chromatography (5-10% 7N NH3-MeOH/CH2Cl2) provided the primary alcohol (31 g, 62%) as a light yellow solid.

A slurry of alcohol (31 g, 0.25 mol) from Preparative Example 216, Step A in CH2Cl2(500 mL) was cooled to 0° C. and slowly treated with SOCl2(55 mL, 0.74 mol over 30 minutes). The reaction was then stirred overnight at 20° C. The material was concentrated, slurried in acetone, and then filtered. The resulting beige solid was dried overnight in vacuo (38.4 g, 52%, HCl salt).

To a 15 mL pressure tube charged with a stir bar was added chloride (150 mg, 0.83 mmol) from Preparative Example 216, Step B followed by 7 M NH3/MeOH (10 mL). The resulting solution was stirred for 48 h at rt where upon the mixture was concentrated under reduced pressure to afford a light yellow solid (0.146 g, 83%). M+H (free base)=140.

The above compound was prepared accordingly to methods described in WO 00/26210.

The above compound was prepared accordingly to methods described in WO 99/10325.

The known amine dihydrochloride was prepared according to methods described in WO 02/64211.

The above compound was prepared according to methods described in WO 02/64211.

The known primary alcohol was prepared according to WO 00/37473 and was converted to the desired amine dihydrochloride in analogous fashion as Preparative Example 220 according to WO 02/064211.

To a solution of aldehyde (WO 02/32893) (0.46 g, 2.07 mmol) in MeOH/THF (2 mL/2 mL) at 0° C. was added NaBH4(94 mg, 2.48 mmol) in one portion. The resulting mixture was stirred for 12 h at rt and was diluted with sat. aq. NH4Cl (3 mL). The mixture was concentrated under reduced pressure and the resultant aqueous layer was extracted with CH2Cl2(3×5 mL). The organic layers were combined, washed with brine (1×5 mL), dried (Na2SO4), and filtered. The organic layer was concentrated under reduced pressure to afford 417 mg (90% yield) of a white solid. M+H=225.

The crude alcohol from Preparative Example 222, step A (0.4 g, 1.78 mmol) in CH2Cl2(4 mL) was added SOCl2(0.65 mL, 8.91 mmol) and the mixture was stirred for 2 h at rt. The mixture was concentrated under reduced pressure to afford 407 mg (94%) of a light yellow solid. M+H=243. The crude product was taken on without further purification.

To a solution of crude chloride from Preparative Example 222, Step B (0.33 g, 1.36 mmol) in a pressure tube charged with 7M NH3/MeOH (35 mL) and the mixture was stirred for 72 h. The mixture was concentrated under reduced pressure to afford 257 mg (85%) of a yellow semisolid. M+H (free base)=224.

To a round bottom flask charged with amine hydrochloride (0.24 g, 1.1 mmol) from Preparative Example 222 and a stir bar was added 4N HCl/dioxane (10 mL). The resulting solution was stirred for 12 h at rt, concentrated under reduced pressure, and triturated with CH2Cl2(3×5 mL). The crude product was filtered, washed with Et2O (2×5 mL), and dried under high vacuum to afford 0.19 g (91%) as the dihydrochloride salt. M+H (free base)=124.

Pd(PPh3)4(0.404 gm, 0.35 mmol) was added to a degassed solution of 4-cyanobenzene boronic acid (1.029 g, 7 mmol) and 2-bromopyridine (1.11 g, 7 mmol) in 75 mL acetonitrile. 0.4 M sodium carbonate solution (35 mL) was added to the reaction mixture and the resulting solution was refluxed at 90° C. under Ar for 24 hours (progress of reaction was monitored by TLC). The reaction mixture was cooled and aqueous layer was separated. The organic layer containing the product and spent catalyst was mixed with silica gel (15 g) and concentrated to dryness. The 4-(2-pyridyl)-benzonitrile was isolated by column chromatography (0.850 g, 68%). LCMS: MH+=181;1H NMR (CDCl3) δ 8.85 (d, 1H), 8.7 (dd, 1H), 7.9 (dd, 1H), 7.75 (d, 2H), 7.7 (d, 2H), 7.4 (dd, 1H).

By following essentially same procedure described in Preparative Example 224, only substituting the bromides in column 2 of Table 14, compounds in column 3 of Table 14 were prepared.

BH3-THF solution (1 M, 24 mL, 5 eq) was added slowly to a stirring solution of 4-(2-pyridyl)-benzonitrile (0.85 g, 4.72 mmol) in anhydrous THF (25 mL) under Ar, and the resulting solution was refluxed for about 12 hr. The solution was cooled to 0° C. using ice-water. Methanol (15 mL) was added drop-wise to the cold reaction mixture and stirred for 1 h to destroy excess BH3. Added HCl—methanol (1M, 10 mL) slowly to the reaction mixture and refluxed for 5 h. Concentrated the solution to dryness and the residue was dissolved in 25 mL water and extracted with ether to remove any un-reacted material. The aqueous solution was neutralized with solid potassium carbonate to pH 10-11. The free amine, thus formed was extracted with ether, dried over potassium carbonate (0.45 g, 50%). LCMS: MH+=185;1H NMR (CDCl3) δ8.85 (d, 1H), 8.7 (dd, 1H), 7.9 (dd, 1H), 7.75 (d, 2H), 7.7 (d, 2H), 7.4 (dd, 1H), 3.7 (t, 2H), 1.7 (t, 2H).

By following essentially the same procedure set forth in Preparative Example 229, compounds in column 3 of Table 15 were prepared.

A mixture 4-fluorobenzonitrile (3 g, 25 mmol) and imidazolyl sodium (2.48 g, 27.5 mmol) in DMF (50 mL) was stirred at 80° C. under Ar for 12 h. Progress of reaction was monitored by TLC. The reaction mixture was concentrated in vacuo and the residue was diluted with 50 mL water and stirred. The aqueous mixture was extracted with EtOAc (2×50 mL). Combined EtOAc extracts was dried over anhydrous MgSO4, concentrated, and the 4-(1-imidazolyl)-benzonitrile was isolated by column chromatography (3.6 g, 78%). LCMS: MH+=170;1H NMR (CDCl3) δ 8.0 (s, 1H), 7.5 (d, 2H), 7.4 (m, 3H), 7.3 (d, 1H)

4-(1-imidazolyl)-benzonitrile (1 g, 5.92 mmol) was dissolved in anhydrous THF (10 mL) and added drop-wise to a stirring solution of LAH-THF (1 M in THF, 18 mL) at room temperature. The reaction mixture was refluxed under Ar for 2 h and the progress was monitored by TLC. The mixture was cooled to 0° C. and quenched by drop-wise addition of a saturated Na2SO4—H2O solution. The mixture was stirred for 1 h and filtered to remove lithium salts. The filtrate was dried over anhydrous MgSO4and concentrated to obtain 4-(1-imidazolyl)-benzylamine (0.8 g, 80%). LCMS: MH+=174.

A mixture of 4-(5-oxazolyl)benzoic acid (1.0 g, 5.46 mmol) and Et3N (552 mg, 5.46 mmol) in 25 mL of THF was cooled to 0° C. and ClCOOi-Bu (745 mg, 5.46 mmol) was added dropwise. After the addition was over, the reaction mixture was stirred for additional 5 min and then aq NH4OH (0.63 mL of 28% solution, 10.46 mmol) was added. After overnight stirring, the solvent was evaporated, the residue was taken up in water and basified to pH 9. The precipitated solid was filtered, washed with water and dried over P2O5in a vacuum desiccator to provide 500 mg (48%) of the 4-(5-oxazolyl)-benzamide:1H NMR (DMSO-d6) δ 8.50 (s, 1H), 8.20-7.80 (m, 5H).

A suspension of 4-(5-oxazolyl)benzamide (500 mg, 2.657 mmol) in 10 mL of dry THF was cooled to 0° C. and 10 mL of 1 M BH3.THF (10.00 mmol) was added. The contents were refluxed overnight and the excess borane was destroyed by dropwise addition of methanol. The solvent was evaporated and the residue was treated with methanolic HCl to decompose the amine-borane complex. After evaporation of the methanol, the residue was taken in water, basified to pH 10 and the product was extracted in to DCM. The DCM layer was dried (K2CO3) and the solvent was removed to provide 150 mg (32%) of 4-(5-oxazolyl)benzylamine:1H NMR (CDCl3) δ 7.90 (s, 1H), 7.60 (d, 2H), 7.40 (d, 2H), 7.30 (s, 1H), 3.90 (s, 2H).

By essentially the same procedures set forth above, the compounds in Column 2 of Table 16 were reduced using the method indicated in Column 3 of Table 16 to give the amine indicated in Column 4 of Table 16.

1-Methylisonipecotamide (6.75 g, 47.5 mmoles) (prepared as described in Preparative Example 245, Step A above) was dissolved in anhydrous THF (350 mL) and the resulting mixture was added in portions to a stirred slurry of lithium aluminum hydride (1.8 g, 47.5 mmoles) in anhydrous THF (100 mL) at 0° C. under nitrogen. The mixture was stirred at 0° C. for 30 min and then heated at 66° C. for 25 h under nitrogen. Distilled water (1.88 mL) was added dropwise to the stirred mixture at 0° C., followed by 20% aqueous sodium hydroxide (1.42 mL) and then distilled water (6.75 mL) and the mixture was stirred for 15 min. The mixture was filtered and the solids were washed with THF and dichloromethane. The combined filtrates were evaporated to dryness and chromatographed on a silica gel column (30×5 cm) using 15%-20% (10% conc. ammonium hydroxide in methanol)-dichloromethane as the eluant to give 4-(aminomethyl)-1-methylpiperidine (0.678 g, 11%): FABMS: m/z 129.1 (MH+); HRFABMS: m/z 129.1389 (MH+). Calcd. for C7H17N2: m/z 129.1392; 8H (d6-DMSO): 2.08 ppm (3H, s, —NCH3); δC(d6-DMSO): CH3: under DMSO peaks; CH2, 29.6, 29.6, 46.7, 55.2, 55.2; CH, 46.2.

To a solution of (1S,2S)-2-benzyloxycyclopentyl amine (1.5 g, 7.84 mmol) in MeOH (50 mL) at rt was added 10% Pd/C (50% wet, 1.0 g) followed by dropwise addition of conc. HCl (0.7 mL). The mixture was stirred under a balloon of H2for 14 h and the catalyst was filtered off thru a pad of Celite. The pad of Celite was washed with MeOH (2×10 mL) and the resulting filtrate was concentrated under reduced pressure to afford 0.97 g (90%) of a yellow semisolid; M+H (free base)=102

In an analogous fashion to Preparative Example 248, the benzyl protected cycloalkyl amines (Column 2) were converted to the desired aminocycloalkanol hydrochloride derivatives (Column 3) as listed in Table 17.

To a solution of ester (prepared according toJ. Org. Chem. (1999), 64, 330) (0.5 g, 2.43 mmol) in THF (8 mL) at 0° C. was added LiAlH4(0.37 g, 9.74 mmol) in one portion. The resulting mixture was heated at reflux for 12 h and was cooled to 0° C. The mixture was treated sequentially with H2O (1 mL), 1 M NaOH (1 mL), and H2O (3 mL). CH2Cl2(10 ml) was added to the mixture which was stirred vigorously for 30 min. The mixture was filtered thru a pad of Celite which was washed generously with CH2Cl2(3×5 mL). The resulting filtrate was concentrated under reduced pressure to afford 0.41 g (85%) of a yellow/orange solid. M+H=142.

To a solution of L-proline methyl ester hydrochloride (0.50 g, 3.0 mmol) in CH2Cl2(15 mL) at 0° C. was added Et3N (1.1 mL, 7.55 mmol) followed by TFAA (0.56 mL, 3.92 mmol). The mixture was stirred for 12 h at rt and 1N HCl (25 mL) was added. The layers were separated and the organic layer was washed sequentially with sat. aq. NaHCO3(1×25 mL), and brine (1×25 mL). The organic layer was dried (Na2SO4), filtered, and concentrated under reduced pressure to afford 0.72 g (100%) of a yellow oil. M+H=226. The crude material was taken onto Step B without further purification.

To a solution of the compound prepared in Preparative Example 253, Step A (0.68 g, 3.0 mmol) in THF (20 mL) at 0° C. was added MeMgI (5.1 mL, 3.0M in Et2O) dropwise over 10 min. The resulting solution was stirred for 16 h at rt whereupon the mixture was quenched by addition of sat. aq. NH4Cl. The mixture was concentrated to dryness and the resultant residue was stirred with EtOAc (100 mL) for 45 min and filtered. The filtrate was concentrated under reduced pressure to afford 0.68 g (100%) of a yellow/orange oil. M+H=226. The crude material was taken onto Step C without further purification.

To a solution of the compound prepared in Preparative Example 253, Step B (0.68 g, 3.0 mmol) in MeOH (5 mL) was added a solution of KOH (0.68 g, 12.1 mmol) in MeOH (5 mL). The mixture was stirred at reflux for 12 h and rt for 72 h whereupon the mixture was concentrated to dryness. The crude residue was suspended in EtOAc (50 mL) and was stirred vigorously for 30 min and was filtered. This procedure was repeated 2× more and the resultant filtrate was concentrated under reduced pressure to afford 128 mg (33%) of a maroon/orange oil. M+H=130. This material was used without purification in the subsequent coupling step.

The aldehyde was prepared according to the procedure of Gupton (J. Heterocyclic Chem. (1991), 28, 1281).

Using the aldehyde from Preparative Example 254, the procedure of Gupton (J. Heterocyclic Chem. (1991), 28, 1281) was employed to prepare the title aldehyde.

The title aldehyde was prepared according to the procedure of Ragan et. alSynlett(2000), 8, 1172-1174.

The reaction of known cyclopentyl guanidine hydrochloride (Org. Lett. (2003), 5, 1369-1372) under the conditions of Ragan (Synlett(2000), 8, 1172-1174) afforded the title aldehyde.

The title compound was prepared according to known literatureMonatshefte fur Chemie(1973), 104, 1372-1382.

Examples

A solution of the product from Preparative Example 127 (0.27 g, 0.875 mmol), 4-aminomethylpyridine (0.12 g, 1.3 eq.), and K2CO3(0.24 g, 2 eq.) in CH3CN (5 mL) was stirred at room temperature 48 hours. The reaction mixture was diluted with H2O and extracted with CH2Cl2. The combined organics were dried over Na2SO4, filtered and concentrated. The crude product was purified by flash chromatography using a 4% MeOH in CH2Cl2solution as eluent (0.28 g, 93% yield). LCMS: MH+=380; mp=>205° C. (dec).

By following essentially the same procedure set forth in Example 1 only substituting the chlorides shown in Column 2 of Table 18 and the amines shown in Column 3 of Table 18, the compounds in Column 4 of Table 18 were prepared:

Additional data for select examples given below.

To a solution of the compound prepared in Example 156 (100 mg, 0.23 mmol) in dry THF (4 mL) was added LiAlH4(1.0 M in THF, 0.110 mL, 0.110 mmol) at 0° C. under N2. The mixture was stirred at 0° C. for 1 hr, warmed to 25° C., then additional LiAlH4(1.0 M in THF, 0.400 mL) was added, the mixture was stirred for 20 min and then quenched with MeOH (2.0 mL). The solvent was evaporated and the crude product was purified by flash chromatography using 10:1 CH2Cl2:MeOH as eluent. White solid (46 mg, 49%) was obtained. LCMS: M+=416. Mp=71-72° C.

To a solution of the compound prepared in Example 156 (70 mg, 0.16 mmol) in dry THF (3 mL) was added MeMgBr (3.0 M in Et20, 1.10 mL, 3.20 mmol) under N2. The mixture was stirred at 25° C. for 45 min and then quenched with saturated aqueous NH4Cl (5.0 mL). The mixture was poured into saturated aqueous NH4Cl (30 mL) and extracted with CH2Cl2(3×20 mL). The extracts were dried over Na2SO4and filtered. The solvent was evaporated and the crude product was purified by flash chromatography using 20:1 CH2Cl2:MeOH as eluent. White solid (25 mg, 36%) was obtained. LCMS: M+=444. Mp=76-80° C.

Anhydrous DMF (40 mL) was added under N2to the compound prepared in Preparative Example 174 (2.50 g, 8.65 mmol) and 60% NaH in mineral oil (346 mg, 8.65 mmol). The mixture was stirred at 25° C. for 1 hr, then 2-chloro-5-chloromethylpyridine N-oxide (1.54 g, 8.65 mmol) in anhydrous DMF (20 mL) was added slowly. The mixture was stirred at 25° C. for 18 hr, the solvent was evaporated and the crude product was purified by flash chromatography using 30:1 CH2Cl2:MeOH as eluent. So obtained solid was triturated by 50 mL of 1:1 EtOAc:hexane. Pale yellow solid (1.25 g, 34%) was obtained. LCMS: MH+=432. Mp=224-226° C.

By essentially the same procedure set forth in Example 213 combining the compounds shown in Column 2 of Table 19 with compounds in Column 3 of Table 19, the compounds shown in Column 3 of Table 19 were prepared.

CF3CH2OH (3.0 mL) was added under N2to 60% NaH in mineral oil (40 mg, 1.0 mmol), the mixture was stirred for 20 min, then the product prepared in Example 213 (50 mg, 0.12 mmol) was added. The mixture was refluxed for 20 hr, the solvent was evaporated, and the residue was purified by flash chromatography using 20:1 CH2Cl2:MeOH as eluent to yield pale yellow solid (35 mg, 61%). LCMS: M2H+=496. Mp=208-210° C.

By essentially the same procedure set forth in Example 218 combining the compounds shown in Column 1 of Table 20 with the appropriate alcohol, the compounds shown in Column 2 of Table 20 were prepared.

A mixture of the product prepared in Example 213 (100 mg, 0.23 mmol) and KOH (95 mg, 1.70 mmol) in 1,2-dimethoxyethane (3 mL) and H2O (1.5 mL) was refluxed under N2for 20 hr, quenched with acetic acid (0.30 mL), and the solvent was evaporated. The residue was suspended in H2O (15 mL), filtered and the solid was washed with H2O (15 mL) and Et2O (10 mL). Then it was mixed with CH2Cl2(2 mL) and Et2O (2 mL) and filtered. Et2O (5 mL) was added to the filtrate and the mixture was allowed to stand overnight. The solid was removed by filtration, washed with Et2O and then dissolved in MeOH (5 mL). The solution was filtered and the solvent from the filtrate was evaporated. Off-white solid (5 mg, 5%) was obtained. LCMS: M+=412. Mp=206-208° C.

By essentially the same procedure set forth in Example 227 combining the compounds shown in Column 1 of Table 21 with the appropriate amine, the compounds shown in Column 2 of Table 21 were prepared.

A mixture of the product prepared in Example 213 (80 mg, 0.19 mmol) and 2.0 M methylamine in THF was stirred in a closed pressure vessel at 50° C. for 72 hr. The solvent was evaporated, and the residue was purified by flash chromatography using 10:1 CH2Cl2: MeOH as eluent to yield pale yellow solid (40 mg, 51%). LCMS: M2H+=427. Mp=217-219° C.

By essentially the same procedure set forth in Example 234, the compound shown above was prepared. LCMS: M2H+=441. Mp=98-101° C.

The compound prepared in Preparative Example 174 (140 mg, 0.48 mmol) and the aldehyde (71 mg, 0.58 mmol) were stirred in anhydrous THF (4 mL) at 50° C. under N2. Ti(OiPr)4(0.574 mL, 1.92 mmol) was added, the mixture was stirred at 50° C. 3 hr, and cooled to 25° C. NaBH3CN (181 mg, 2.88 mmol) was added, the mixture was stirred for 2 more hr, then poured into 10% aqueous Na2CO3(100 mL), and extracted with CH2Cl2(3×50 mL). Combined extracts were dried over Na2SO4, filtered, and the solvent was evaporated. The residue was purified by flash chromatography using 15:1 CH2Cl2:MeOH as eluent to yield pale yellow solid (40 mg, 21%). LCMS: MH+=398. Mp>230° C.

By essentially the same procedure set forth in Example 236 combining the compounds shown in Column 2 and 3 of Table 22, the compounds shown in Column 4 of Table 22 were prepared.

A mixture of the compound prepared in Example 242 (100 mg, 0.24 mmol), conc. aqueous HCl (1.0 mL) and acetic acid (2.0 mL) were stirred at 100° C. under N2for 2 hr, then poured onto Na2CO3(15 g), and extracted with 1:1 acetone:CH2Cl2(3×30 mL). Combined extracts were filtered, and the solvent was evaporated. The residue was purified by flash chromatography using 10:1 CH2Cl2:MeOH as eluent to yield pale yellow solid (36 mg, 37%). LCMS: M2H+=398.

By essentially the same procedure set forth in Example 257 starting from the compounds shown in Column 1 of Table 23, the compounds shown in Column 2 of Table 23 were prepared.

To a stirred solution of the compound prepared in Example 239 (41 mg, 0.10 mmol) in CH2Cl2was added 1.0 M BBr3(0.30 mL, 0.30 mmol) in CH2Cl2at −78° C. The mixture was stirred at −78° C. for 5 min, then at 24° C. for 3 hr, then MeOH (2.0 mL) was added and the mixture was stirred for 10 min. The solvent was evaporated and the residue was purified by flash chromatography using 5:1:0.1 CH2Cl2:MeOH:conc. NH4OH as eluent to yield white solid (39 mg, 99%). LCMS: M+=397. Mp>230° C.

By essentially the same procedure set forth in Example 262 starting from the compounds shown in Column 1 of Table 24, the compounds shown in Column 2 of Table 24 were prepared.

TFA (0.5 mL) was added to a solution of the compound prepared in Preparative Example 197 (0.08 g, 0.16 mmol) in CH2Cl2(2.0 mL) at 0° C. and the resulting solution stirred 2.5 hours and stored at 4° C. overnight at which time additional TFA (0.5 mL) was added. The resulting solution was stirred 4 hours and concentrated in vacuo. The residue was neutralized with 1N NaOH and extracted with CH2Cl2. The combined organics were dried over Na2SO4, filtered, and concentrated under reduced pressure. The crude product was purified by flash chromatography using a 2.5% (10% NH4OH in MeOH) in CH2Cl2solution as eluent (0.009 g, 15% yield). LCMS: MH+=396; mp=53-54° C.

A solution of the compound prepared in Preparative Example 182 (26 mg, 0.070 mmol) and potassium thiocyanate (13 mg, 0.14 mmol) in MeOH (1 mL) was cooled in a cold water bath. To it was added a solution of bromine (22 mg, 0.14 mmol) in MeOH (0.7 mL) dropwise. The resulting reaction mixture was stirred for 4 h at room temperature and the volatiles were removed under reduced pressure. The residue obtained was suspended in a small amount of CH2Cl2. The potassium bromide was filtered off and pH of the filtrate was adjusted to about 7 by the addition of aqueous ammonia. It was concentrated under reduced pressure and the residual oil was purified by preparative thin-layer chromatography using 15% MeOH in CH2Cl2as eluent (26 mg, 87% yield).1H NMR (CDCl3) δ 8.75 (d, J=4.2 Hz, 2H), 8.38 (s, 1H), 7.68-7.64 (m, 2H), 7.46-7.39 (m, 3H), 7.22 (t, J=6.3 Hz, 1H), 6.43 (s, 1H), 4.84 (d, J=6.3 Hz, 2H); LCMS: MH+=427.

A solution of the compound from Preparative Example 184 (0.05 g, 0.15 mmol), N-methylpiperazine (20 μL, 1.2 eq.) and iPr2Et (52 μL, 2.0 eq.) in dioxane (1 mL) was heated to 70° C. overnight. The reaction mixture was cooled to room temperature and diluted with H2O and saturated NaHCO3. The resulting mixture was extracted with CH2Cl2, the combined organics dried over Na2SO4, filtered, and concentrated under reduced pressure. The crude product was purified by Preparative TLC using a 5% (10% NH4OH in MeOH) in CH2Cl2solution as eluent (0.028 g, 47% yield). MS: MH+=402. mp=210° C. (dec.)

By essentially the same procedure set forth in Example 268 only substituting the amine in Column 2 of Table 25 and the chlorides in Column 3 of Table 25, the compounds shown in Column 4 of Table 25 are prepared:

4-Fluorophenyl magnesium bromide (0.68 mL, 1.2 eq.) was added to the compound prepared in Preparative Example 193 (0.20 g, 0.55 mmol) and PdCl2(dppf)2(0.037 g, 10 mol %) in THF and the resulting solution was stirred at room temperature 72 hours. The reaction mixture was dilute with saturated NH4Cl and extracted with EtOAc. The combined organics were washed with saturated NaCl, dried over Na2SO4, filtered and concentrated. The crude product was purified by flash chromatography using neat EtOAc as eluent (0.15 g, 65% yield). MS: MH+=420.

By essentially the same procedure set forth in Preparative Example 127 only substituting the compound prepared in Example 276, Step A, the above compound was prepared (0.17 g, 94% yield).

By essentially the same procedure set forth in Preparative Example 200 only substituting the compound prepared in Example 276, Step B, the above compound was prepared (0.1 g, 100% yield).

By essentially the same procedure set forth in Example 265 only substituting the compound prepared in Example 276, Step C, the above compound was prepared (0.049 g, 62% yield). MS: MH+=414; mp=110-115° C.

Pd(PPh3)4(0.065 g, 10 mol %) was added to 3-cyanophenyl zinc iodide (2.2 mL, 0.5 M solution in THF, 2 eq.) and the compound prepared in Preparative Example 193 (0.2 g, 0.56 mmol) in DMF (2.0 mL) and the resulting solution heated to 80° C. g for 144 hours. The reaction mixture was cooled to room temperature, diluted with saturated NH4Cl and extracted with EtOAc. The combined organics were washed with H2O and brine, dried over Na2SO4, filtered, and concentrated under reduced pressure. The crude product was purified by flash chromatography using a neat EtOAC solution as eluent (0.07 g, 29% yield). MS: MH+=427.

Step B through Step D:

By essentially the same procedures set forth in Example 276, Step B through Step D, the above compound was prepared (0.023 g, 53% yield). MS: MH+=421; mp=230° C. (dec.)

By essentially the same procedure set forth in Example 276 only substituting the appropriate cyclopropylmagnesium bromide in Step A, the compound was prepared. MS: MH+=372; m. p.=96-98° C.

By following essentially the same procedure set forth in Example 279 only substituting the chlorides shown in Column 2 of Table 26 and the organozinc reagents shown in Column 3 of Table 26, the compounds in Column 4 of Table 26 were prepared:

Additional data for select compounds is shown below.

By essentially the same procedure set forth in Preparative Example 127 only substituting the compound prepared in Preparative Example 189, the above compound was prepared. MS: MH+=334; mp=170-173° C.

By essentially the same procedure set forth in Example 298 only substituting the compound shown in Table 27, Column 2, the compounds shown in Table 27, Column 3 were prepared:

To a solution of the compound prepared in Preparative Example 186 (0.1 g, 0.21 mmol) in THF (4.0 mL) at −78° C. was added nBuLi (0.57 mL, 2.16M in hexanes, 5.0 eq.) at −78° C. The reaction mixture was stirred 2 hours at −78° C., quenched with H2O, warmed to room temperature, and extracted with EtOAc. The combined organics were dried over Na2SO4, filtered, and concentrated under reduced pressure. The crude product was purified by Preparative TLC using a 2.5% (10% NH4OH in CH3OH) solution in CH2Cl2as eluent (0.013 g, 20% yield). MS: MH+=326; mp=71-72° C.

By essentially the same procedure set forth in Example 301 only substituting the compound from Preparative Example 187, the above compound was prepared (0.049 g, 68% yield). MS: MH+=344; mp=69-71° C.

To a solution of 3-H adduct from Preparative Example 187.1 (0.70 g, 2.32 mmol) in DMF (4.2 mL) at 0° C. was added POCl3(0.67 mL, 7.2 mmol) dropwise. The mixture was stirred for 14 h at rt, cooled to 0° C., and was quenched by addition of ice. 1N NaOH was carefully added to adjust pH to 8 and the mixture was extracted with CH2Cl2(3×25 mL). The organic layers were combined, dried (Na2SO4), filtered, and concentrated under reduced pressure. The crude product was recrystallized from EtOAc to afford 0.43 g (56%) of a yellow solid. mp 181-183° C.; M+H=330.

To a solution of aldehyde (100 mg, 0.30 mmol) from Example 303 in THF (1 mL) at 0° C. was added cyclohexyl magnesium bromide (0.46 mL, 2.0M in Et2O) dropwise over 5 min. The resulting mixture was stirred at 0° C. for 2 h and at rt for 12 h. The mixture was cooled to 0° C. and was treated with sat. aq. NH4Cl (3 mL) and CH2Cl2(5 mL). The layers were separated and the aqueous layer was extracted with CH2Cl2(2×5 mL). The organic layers were combined, washed with brine (1×5 mL), dried (Na2SO4), filtered and concentrated under reduced pressure to afford 110 mg (89%) of a light yellow semisolid. M+H=414. This material was carried on crude to Step B without further purification.

To a solution of alcohol (53 mg, 0.13 mmol) in CH2Cl2(0.5 mL) at 0° C. was added Et3SiH (24 μL, 0.15 mmol) followed by TFA (24 μL, 0.30 mmol). The mixture was stirred for 2 h at 0° C. and rt for 2 h whereupon additional portions of Et3SiH (24 mL, 0.15 mmol) and TFA (24 μL, 0.30 mmol) were added and the mixture was stirred for 3 h at rt (until complete by TLC). The mixture was concentrated under reduced pressure and the crude residue was partitioned between CH2Cl2(5 mL) and sat. aq. NaHCO3(2.5 mL). The layers were separated and the aqueous layer was extracted with CH2Cl2(2×5 mL). The organic layers were combined, washed with brine (1×5 mL), dried (Na2SO4), filtered and concentrated under reduced pressure. The crude product was purified by prep TLC (8×1000 mM) eluting with CH2Cl2/MeOH (22:1) to afford 29 mg (56%) of a yellow semisolid. M+H=398.

By essentially the same procedure set forth in Example 304, utilizing the aldehyde from Example 303 and substituting the Grignard or organolithium reagents shown in Column 2 of Table 28, the compounds in Column 3 of Table 28 were prepared:

To solution of aldehyde (81 mg, 0.25 mmol) from Example 303 in benzene (2.5 mL) was added carboethoxymethylene triphenyl phosphorane (0.12 g, 0.33 mmol) in one portion. The mixture was heated at reflux for 24 h, cooled to rt, and concentrated under reduced pressure. The mixture was diluted CH2Cl2(5 mL), brine (2 mL) was added, and the layers were separated. The aqueous layer was extracted with CH2Cl2(2×4 mL). The organic layers were combined, dried (Na2SO4), filtered, and concentrated under reduced pressure. The crude product was purified by preparative TLC (8×1000 μM) eluting with CH2Cl2/MeOH (20:1) to afford 98 mg (100%) of white solid. mp 151-153° C.; M+H=400.

To a mixture of benzyltriphenylphosphonium bromide (0.59 g, 1.37 mmol) in THF (3 mL) was added NaH (55 mg, 1.37 mmol) and the mixture was stirred for 30 min. The aldehyde (0.15 g, 0.46 mmol) from Example 303 was added in a single portion and the mixture was heated at reflux for 36 h. The mixture was cooled to rt and was concentrated under reduced pressure. The mixture was diluted CH2Cl2(5 mL), brine (2 mL) was added, and the layers were separated. The aqueous layer was extracted with CH2Cl2(2×4 mL). The organic layers were combined, dried (Na2SO4), filtered, and concentrated under reduced pressure. The crude product was purified by preparative TLC (8×1000 μM) eluting with CH2Cl2/MeOH (20:1) to afford 58 mg (32%) of yellow solid. mp 138-141° C.; M+H=404.

To a solution of aldehyde (0.20 g, 0.60 mmol) from Example 303 in THF (3 mL) was added Ti (i-OPr)4(0.36 mL, 1.21 mmol) dropwise followed by addition of (S)-(−)-2-methyl-2-propanesulfinamide (74 mg, 0.61 mmol). The resulting mixture was stirred for 18 h at reflux, cooled to rt, and quenched with brine (2 mL). The mixture was filtered thru a pad of Celite which was washed with EtOAc (2×2 mL). The layers were separated and the aqueous layer was extracted with EtOAc (2×4 mL). The organic layers were combined, dried (Na2SO4), filtered, and concentrated under reduced pressure. The crude product was purified by preparative TLC (8×1000 μM) eluting with CH2Cl2/MeOH (20:1) to afford 0.21 g (80%) of yellow solid. mp 108-110° C.; M+H=433.

Prepared in the same fashion as Example 315 except substituting (R)-(−)-2-methyl-2-propanesulfinamide to afford 0.25 g (94%) as a yellow solid. mp 107-109° C.; M+H=433.

To a solution of sulfinimine (50 mg, 0.12 mmol) from Example 316 in CH2Cl2(2.5 mL) at −40° C. was added MeMgBr (96 mL, 0.29 mmol) dropwise. The mixture was stirred for 5 h at −40° C. and was stirred at rt for 12 h. An additional portion of MeMgBr (96 mL, 0.29 mmol) and the mixture was stirred for 12 h. Sat. aq. NH4Cl (2 mL) was added and the mixture was extracted with EtOAc (3×4 mL). The organic layers were combined, dried (Na2SO4), filtered, and concentrated under reduced pressure to afford 30 mg (58%) of crude residue. This material was taken onto the next step without purification.

The crude material from Step A (30 mg, 0.067 mmol) in MeOH (2 mL) was added conc. HCl (2 mL). The mixture was stirred at rt for 12 h and the mixture was concentrated to dryness. The crude material was partitioned between CH2Cl2(3 mL) and sat. aq. NaHCO3(2 mL) and the layers were separated. The aqueous layer was extracted with CH2Cl2(2×3 mL) and the organic layers were combined. The organic layer was dried (Na2SO4), filtered, and concentrated under reduced pressure to afford 6 mg (24%) of the title compound as a light yellow solid. mp 100-102° C.; M+H=345.

To a solution of aldehyde (75 mg, 0.23 mmol) from Example 300 in THF/CH2Cl2(5 mL/1 mL) at rt was added MeONH2.HCl (38 mg, 0.46 mmol) followed by dropwise addition of pyridine (46 μL, 0.57 mmol). The mixture was stirred for 72 h at rt whereupon the mixture was concentrated to dryness. The crude material was partitioned between CH2Cl2(3 mL) and sat. aq. NaHCO3(2 mL) and the layers were separated. The aqueous layer was extracted with CH2Cl2(2×3 mL) and the organic layers were combined. The organic layer was dried (Na2SO4), filtered, and concentrated under reduced pressure. The crude product was purified by preparative TLC (3×1000 μM) eluting with CH2Cl2/MeOH (22:1) to afford 90 mg (100%) of light yellow solid. mp 173-175° C.; M+H=359.

To solution of aldehyde (60 mg, 0.18 mmol) from Example 303 at EtOH (2.5 mL) was added oxindole (48 mg, 0.37 mmol) followed by piperidine (3 drops). The mixture was heated at reflux for 14 h and the mixture was cooled to rt. The resultant precipitate was filtered and washed with cold EtOH (2×2 mL). The product was dried under high vacuum to afford 81 mg (100%) of the title compound as an orange/brown solid. mp 182-185° C.; M+H=445.

To a solution of 3-H analog (106 mg, 0.35 mmol) from Preparative Example 187.10 in AcOH (2 mL) was added 37% aqueous formaldehyde (1.5 ml; 1.40 mmol) followed by piperidine (100 μL; 0.37 mmol). The resulting mixture was stirred at rt for 24 h and the AcOH was removed under reduced pressure. The mixture was diluted with water (2 mL) and neutralized with 2M NaOH until pH=8. The aqueous layer was extracted with CH2Cl2(3×7 mL) and the organic layers were combined. The organic layer was washed with brine (1×4 mL), dried (Na2SO4), filtered, and concentrated under reduced pressure to afford 96 mg (69%) of an off-white solid. mp 88-90° C.; M+H 399.

By essentially the same procedure set forth in Example 320 only substituting the amines in Column 2 of Table 29 and employing the 3-H adduct from Preparative Example 187.10, the compounds in Column 3 of Table 29 were prepared:

To a solution of 3-H analog (113 mg, 0.38 mmol) from Preparative Example 187.10 in CH2Cl2(5 mL) at rt was added AlCl3(215 mg, 1.61 mmol) followed by AcCl (100 mL, 1.40 mmol). The mixture was heated at reflux for 12 h and was cooled to rt. The mixture was treated sequentially with 3M HCl (3 mL) followed by sat. aq. NaHCO3(until pH=8). The layers were separated and the aqueous layer was extracted with CH2Cl2(2×5 mL). The organic layers were combined, dried (Na2SO4), filtered, and concentrated under reduced pressure. The crude product was purified by preparative TLC (8×1000 mM) eluting with CH2Cl2/MeOH (20:1) to afford 68 mg (52%) of white solid. mp 220-221° C.; M+H=344.

Utilizing the method described in Example 323, except employing benzoyl chloride, the title compound was prepared in 61% yield as a white solid. mp 172-175° C.; M+H=406.

To a solution of ketone (100 mg, 0.29 mmol) from Example 323 in CH2Cl2(2.5 mL) at 0° C. was added MeMgBr (0.35 mL, 3.0M in Et2O) dropwise. The resulting mixture was stirred for 18 h at rt and was carefully quenched by addition of sat. aq. NH4Cl (2 mL) and CH2Cl2(2 mL) were added. The layers were separated and the aqueous layer was extracted with CH2Cl2(2×4 mL). The organic layers were combined, dried (Na2SO4), filtered, and concentrated under reduced pressure. The crude product was purified by preparative TLC (8×1000 μM) eluting with CH2Cl2/MeOH (10:1) to afford 68 mg (52%) of a yellow solid. mp 160-162° C.; M+H=360.

To a solution of ketone (84 mg, 0.24 mmol) from Example 323 in MeOH/THF (1:1; 2 mL total) at 0° C. was added NaBH4(12 mg, 0.30 mmol) in one portion. The resulting mixture was stirred for 18 h at rt whereupon and additional portion of NaBH4(12 mg, 0.30 mmol) was added. The mixture was stirred for 12 h whereupon the mixture was quenched with ice followed by addition of 1M NaOH to adjust the pH=9. The mixture was diluted with CH2Cl2(5 mL). The layers were separated and the aqueous layer was extracted with CH2Cl2(2×4 mL). The organic layers were combined, dried (Na2SO4), filtered, and concentrated under reduced pressure. The crude product was purified by preparative TLC (8×1000 μM) eluting with CH2Cl2/MeOH (10:1) to afford 25 mg (30%) of a yellow solid. mp 148-150° C.; M+H=346.

Using the same procedure as outlined in Example 326, the ketone (84 mg, 0.21 mmol) was converted to 53 mg (62%) as a light yellow solid. mp 78-80° C.; M+H=408.

To a solution of 3-H adduct (1.3 g, 4.31 mmol) from Preparative Example 187.10 in CH2Cl2(50 mL) was added Eschenmoser's salt (0.79 g, 4.31 mmol) followed by dropwise addition of TFA (0.56 mL, 7.33 mmol). The mixture was stirred at rt for 48 h and was diluted with CH2Cl2(250 mL). The organic layer was washed with sat. aq. NaHCO3(2×125 mL) to afford 1.41 h (92%) of a yellow solid. mp 231-233° C.; M+H=359.

To a solution of tertiary amine adduct (100 mg, 0.28 mmol) from Example 328 in 50% aq. DMF (5 mL) in a pressure tube was added KCN (0.15 g, 2.32 mmol). The tube was capped and heated at 100° C. for 96 h. The mixture was cooled to rt and was diluted with EtOAc (25 mL). The organic layer was washed with brine (1×5 mL) and water (1×5 mL). The organic layers was dried (Na2SO4), filtered, and concentrated under reduced pressure. The crude product was purified by preparative TLC (4×1000 μM) eluting with EtOAc to afford 21 mg (30%) of brown solid. mp 152-155° C.; M+H=341.

To a solution of alcohol (45 mg, 0.14 mmol) from Example 17.10 in CH2Cl2(0.7 mL) at 0° C. was added Et3SiH (26 μL, 0.16 mmol) followed by TFA (25 mL, 0.33 mmol). The mixture was stirred for 2 h at 0° C. and rt for 2 h whereupon additional portions of Et3SiH (26 μL, 0.16 mmol) and TFA (25 μL, 0.33 mmol) were added and the mixture was stirred for 4 h at rt (until complete by TLC). The mixture was concentrated under reduced pressure and the crude residue was partitioned between CH2Cl2(3 mL) and sat. aq. NaHCO3(1.5 mL). The layers were separated and the aqueous layer was extracted with CH2Cl2(2×4 mL). The organic layers were combined, washed with brine (1×5 mL), dried (Na2SO4), filtered and concentrated under reduced pressure. The crude product was purified by prep TLC (4×1000 mM) eluting with CH2Cl2/MeOH (20:1) to afford 21 mg (48%) of a yellow solid. mp 146-148° C.; M+H=316.

To a solution of 3-H adduct (90 mg, 0.30 mmol) from Preparative Example 187.10 in conc. H2SO4(2 mL) at 0° C. was added fuming HNO3(30 μL, 0.72 mmol) dropwise. The resulting mixture was stirred for 1 h at 0° C. whereupon ice (˜1 g) was added to the mixture. The resulting precipitate was collected and was washed with water (2×2 mL) and CH2Cl2(2×2 mL). The crude product was dried under high vacuum to afford 67 mg (60%) of the monosulfate salt as a yellow/orange solid. mp 250° C.; M+H (free base)=392.

To a solution of aldehyde (0.10 g, 0.39 mmol) from Preparative Example 168 in THF (2.5 mL) at 0° C. was added CF3TMS (64 mL, 0.43 mmol) followed by CsF (10 mg). The resulting mixture was stirred for 2 h at 0° C. and 2 h at rt. 1M HCl (5 mL) was added and the mixture was diluted with CH2Cl2(10 mL). The layers were separated, the aqueous layer was extracted with CH2Cl2(2×10 mL), and the organic layers were combined. The organic layer was washed with brine (1×10 mL), dried (Na2SO4), filtered, and concentrated under reduced pressure to afford 127 mg (99%) of a yellow semisolid. M+H=328. The crude product was carried on without further purification.

By utilizing the general procedure set forth in Example 1, the 7-Cl adduct (127 mg, 0.39 mmol) from Example 332, Step A was reacted with 3-(aminomethyl)pyridine (73 μL, 0.43 mmol) to afford 80 mg (51%) of the title compound as a light yellow solid. mp 68-72° C.; M+H=400.

To a solution of aniline (200 mg, 0.69 mmol) from Preparative Example 174 in THF (6 mL) at rt was added aldehyde (114 mg, 0.83 mmol) from Preparative Example 256 followed by dropwise addition of Ti(i-OPr)4(0.82 mL, 2.77 mmol). The mixture was stirred at reflux for 4 h and was cooled to rt. NaCNBH3(347 mg, 5.53 mmol) was added and the mixture was stirred for 2 h at rt. The mixture was cooled to 0° C., treated with 1M NaOH (4 mL) and brine (1 mL) and stirred for 30 min. The mixture was extracted with CH2Cl2(3×10 mL) and the organic layers were combined. The organic layer was washed with brine (1×7 mL), dried (Na2SO4), filtered, and concentrated under reduced pressure. The crude product was purified by preparative thin-layer chromatography (8×1000 νM plates) eluting with CH2Cl2/MeOH (25:1) to afford 89 mg (31%) of the title compound as a yellow solid. mp 210-213° C.; M+H=411.

By essentially the same procedure set forth in Example 333 only by utilizing the anilines shown in Column 2 of Table 30 and the aldehydes shown in Column 3 of Table 30, the compounds in Column 4 of Table 30 were prepared:

Reaction of aniline (0.20 g, 0.69 mmol) with aldehyde (0.13 g, 0.83 mmol) under the reaction conditions described in Example 333 afforded 70 mg (23%) of thiomethyl derivative as a yellow solid. M+H=428.

To a solution of thiomethyl derivative (60 mg, 0.14 mmol) from Example 338, Step A in dioxane (2 mL) was added Boc2O (61 mg, 0.28 mmol) followed by DMAP (21 mg, 0.17 mmol). The mixture was stirred for 14 h at rt and was concentrated under reduced pressure. The crude product was purified by preparative thin-layer chromatography (6×1000 μM plates) eluting with hexanes/EtOAc (4:1) to afford 61 mg (83%) of the title compound as a yellow solid. M+H=528.

To a solution of thiomethyl derivative from Example 338, Step B (41 mg, 0.078 mmol) in CH2Cl2(2 mL) was added MCPBA (33 mg, 0.19 mmol) in one portion. The resulting mixture was stirred for 3 h at rt and the mixture was diluted with CH2Cl2(5 mL) and sat. aq. NaHCO3(2.5 mL). The layers were separated, the aqueous layer was extracted with CH2Cl2(2×5 mL), and the organic layers were combined. The organic layer was dried (Na2SO4), filtered, and concentrated under reduced pressure to afford 40 mg (92%) of the sulfone adduct as a light yellow solid. M+H=560.

To a flask charged with sulfone from Example 338, Step C (75 mg, 0.13 mmol) and a stir bar was added morpholine (2 ml; 22 mmol). The mixture was heated at reflux for 12 h, cooled to rt, and concentrated to dryness under high vacuum. The crude product was purified by preparative thin-layer chromatography (6×1000 μM plates) eluting with CH2Cl2/MeOH (40:1) to afford 41 mg (68%) of the title compound as a yellow solid. mp 209-210° C.; M+H=466.

The title compound was prepared according to the procedure outlined in Example 338 except using benzyl amine to afford 12 mg (70%) of a white solid. mp 194-196; M+H=487.

To a solution of 5-chloro adduct (0.15 g, 0.34 mmol) in dioxane/DIPEA (2.5 mL/1.0 mL) at rt was added cyclopentylamine (0.041 μL, 0.41 mmol) dropwise. The resulting solution was stirred at reflux for 16 h, cooled to rt, and concentrated under reduced pressure. The crude material was purified by preparative thin-layer chromatography (8×1000 μM) eluting with CH2Cl2/MeOH (25:1) to afford 148 mg (89%) of a yellow oil. M+H=489.

Step B: Removal of the t-butoxycarbonyl Protecting Group with TFA

To a solution of the compound prepared in Example 340, Step A (135 mg, 0.28 mmol) in CH2Cl2(2 mL) at rt was added TFA (0.54 mL, 7.0 mmol) dropwise. The resulting solution was stirred for 18 h at rt and was concentrated under reduced pressure. The crude material was redissolved in CH2Cl2(5 mL) and the organic layer was sequentially washed with sat. aq. NaHCO3(2×2 mL) and brine (1×2 mL). The organic layer was dried (Na2SO4), filtered, and concentrated under reduced pressure. The crude material was purified by preparative thin-layer chromatography (8×1000 μM) eluting with CH2Cl2/MeOH (20:1) to afford 105 mg (97%) of white solid. mp 120-122° C.; M+H=389.

By essentially the same procedure set forth in Example 340 only substituting the appropriate amine, the above compound was prepared. MS: MH+=431.

Step B: Removal to t-butoxycarbonyl Protecting Group with KOH.

To a mixture of the compound prepared in Example 341, Step A (0.14 g, 0.26 mmol) in EtOH: H2O (3 mL, 2:1) was added KOH (0.29 g, 20 eq.) in one portion. The resulting solution was stirred at reflux 14 hours, cooled to room temperature, and concentrated under reduced pressure. The residue was taken up in CH2Cl2(5 mL) and diluted with saturated NaHCO3(2 mL). The layers were separated and the aqueous layer extracted with CH2Cl2(2×4 mL). The combined organics were washed with brine, dried over Na2SO4, filtered, and concentrated under reduced pressure. The crude product was purified by preparative TLC (8×1000 μM) eluting with 5% MeOH in CH2Cl2solution (0.066 g, 59% yield). MS: MH+=432; mp=219-221° C.

By essentially the same procedure set forth in Example 340 only substituting the chlorides in Column 2 of Table 31 and removing the t-butoxycarbonyl protecting group by the method shown in Column 3 of Table 31, the compounds shown in Column 4 of Table 31 were prepared.

Additional data for select example shown below:

By essentially the same conditions set forth in Example 341, Steps A and B only substituting the compound prepared in Preparative Example 193.10, the compounds in Column 4 of Table 32 were prepared.

Additional data for select examples shown below:

By the procedure set forth inChem. Pharm. Bull.1999, 47, 928-938. utilizing the oxygen or sulfur nucleophiles shown in Column 2 as described of Table 33 and by employing the cleavage method listed in Column 3 of Table 33, the compounds in Column 4 of Table 33 were prepared:

To a solution of amino compound (18 mg, 0.043 mmol) from Example 373 in CH2Cl2(1 mL) at rt was added DIPEA (10 μL, 0.056 mmol) followed by MeSO2Cl (4 mL, 0.052 mmol). The mixture was stirred at rt for 12 h and was diluted with CH2Cl2(2 mL) and sat. aq. NaHCO3(2 mL). The layers were separated and the organic layer was extracted with brine (1×2 mL). The organic layer was dried (Na2SO4), filtered, and concentrated under reduced pressure. The crude material was purified by preparative thin-layer chromatography (4×1000 μM) eluting with CH2Cl2/MeOH (20:1) to afford 16 mg (75%) of white solid. mp 152-154° C.; M+H=495.

Utilizing the procedure outlined in Example 422, the amino compounds (Column 2) were converted to the corresponding methylsulfonamides (Column 3) in Table 34.

A mixture of the compound prepared in Example 425, Step A (50 mg, 0.12 mmol) and KOH (100 mg, 1.80 mmol) in ethanol (3 mL) and H2O (0.6 mL) was stirred at 70° C. under N2for 24 hr. NaHCO3(1.0 g), Na2SO4(2.0 g), and CH2Cl2(20 mL) were added, the mixture was shaken and then filtered. The solvent was evaporated and the residue was purified by flash chromatography using 20:1:0.1 CH2Cl2:MeOH:conc.NH4OH as eluent to yield yellow waxy solid (17 mg, 45%). LCMS: MH+=328. Mp=48-51° C.

By essentially the same procedure set forth in Example 425, Step A only using tributylmethylethynyltin, the compound shown above was prepared.

A mixture of the compound prepared in Example 426, Step A (150 mg, 0.34 mmol) and PtO2 (30 mg, 0.13 mmol) in glacial acetic acid (5 mL) was stirred under 1 atmosphere of H2for 20 hr. The mixture was filtered, fresh PtO2 (30 mg, 0.13 mmol) was added and the mixture was stirred under 1 atmosphere of H2for 2.5 hr. The mixture was poured onto Na2CO3(20 g) and H2O (200 mL) and it was extracted with CH2Cl2(4×20 mL). The combined extracts were dried over Na2SO4and filtered. The solvent was evaporated and the residue was purified by flash chromatography using 1:1 CH2Cl2:EtOAc as eluent to yield yellow waxy solid (68 mg, 45%).

By essentially the same procedure set forth in Example 425, Step B only substituting the compound prepared in Example 426, Step B, the compound shown above was prepared, MS: MH+=344. Mp=110-112° C.

A mixture of the compound prepared in Preparative Example 194 (527 mg, 1.00 mmol), triethyl(trifluoromethyl)silane (666 mg, 3.60 mmol), potassium fluoride (210 mg, 3.60 mmol), and CuI (850 mg, 4.46 mmol) in anhydrous DMF (4 mL) was stirred in a closed pressure vessel at 80° C. for 72 hr. CH2Cl2(80 mL) was added and the mixture was filtered through Celite. The solvent was evaporated and the residue was purified by flash chromatography using 2:1 CH2Cl2: EtOAc as eluent to yield pale orange waxy solid (70 mg, 15%). LCMS: M+=470.

TFA (0.70 mL) was added at 0° C. under N2to a stirred solution of the compound prepared in Example 427, Step A (70 mg, 0.15 mmol), in anhydrous CH2Cl2(3 mL). The mixture was stirred at 0° C. for 10 min, then at 25° C. for 2 hr. It was poured into 10% aqueous Na2CO3(50 mL), extracted with CH2Cl2(3×15 mL), dried over Na2SO4, and filtered. The solvent was evaporated and the residue was purified by flash chromatography using EtOAc as eluent to yield off-white solid (40 mg, 73%). LCMS: M+=370. Mp=156-158° C.

A mixture of the compound prepared in Example 428, Step A (36 mg, 0.10 mmol) and KOH (300 mg, 5.40 mmol) in ethanol (3 mL), 1,2-dimethoxyethane (3.0 mL0 and H2O (0.8 mL) was refluxed under N2for 4 hr. It was poured into saturated aqueous NaHCO3(100 mL), extracted with CH2Cl2(5×10 mL), dried over Na2SO4, and filtered. The solvent was evaporated and the residue was purified by flash chromatography using 30:1 EtOAc:MeOH as eluent to yield colorless waxy (18 mg, 69%). LCMS: MH+=266.

N-bromosuccinimide (12 mg, 0.068 mmol) in anhydrous CH3CN (2 mL) was added under N2to a stirred solution of the compound prepared in Example 428, Step B (18 mg, 0.068 mmol), in anhydrous CH3CN (2 mL). The mixture was stirred at 25° C. for 2 hr. The solvent was evaporated and the residue was purified by flash chromatography using EtOAc as eluent to yield 5 mg (17%) of the dibromo compound (white solid, LCMS: MH+=370, mp=150-152° C.) and 8 mg (34%) of the monobromo compound (colorless solid, LCMS: M+=344, mp=196-198° C.).

1,3-propanesultam (72 mg, 0.60 mmol) in anhydrous DMF (3 mL) was added under N2to 60% NaH in mineral oil (36 mg, 0.90 mmol). The mixture was stirred for 20 min, then the compound prepared in Preparative Example 196 (200 mg, 0.46 mmol) was added. The mixture was stirred at 100° C. for 30 min, the solvent was evaporated and the residue was purified by flash chromatography using EtOAc as eluent to yield colorless solid (150 mg, 63%). LCMS: M+=523.

TFA (1.5 mL) was added at 0° C. under N2to a stirred solution of the compound prepared in Preparative Example 196 (140 mg, 0.27 mmol), in anhydrous CH2Cl2(5 mL). The mixture was stirred at 0° C. for 10 min, then at 25° C. for 2 hr. It was poured onto Na2CO3(10 g), extracted with CH2Cl2(3×50 mL), and filtered. The solvent was evaporated and the residue was purified by flash chromatography using 40:1 EtOAc:MeOH as eluent to yield white solid (32 mg, 28%). LCMS: M+=423. Mp=218-220° C.

3-Bromo-7-chloro-5-(2-chlorophenyl)pyrazolo[1,5-a]pyrimidine (1 equivalent) (prepared as described in Preparative Example 129), or 3-Bromo-7-chloro-5-phenylpyrazolo[1,5-a]pyrimidine (1 equivalent) (prepared as described in Preparative Example 127), R1NH2(1.2 equivalents) and diisopropyl ethylamine (2 equivalents) were dissolved in anhydrous 1,4-dioxane and the mixture was heated at 75° C. for the time given in Table 97. The solution was evaporated to dryness and the residue was chromatographed on a silica gel column as described in Table 97, to give the title compound.

Using the appropriate reactants and essentially the same procedure as described above, the products of Examples 431 to 438 were prepared. Variations in the reaction conditions are noted in Table 35.

Additional physical data for the compounds are given below:

3-Bromo-7-chloro-5-(2-chlorophenyl)pyrazolo[1,5-a]pyrimidine (50 mg, 0.146 mmoles) (prepared as described in Preparative Example 129) was dissolved in anhydrous 1,4-dioxane (5 mL) in a GeneVac Technologies carousel reaction tube. PS-diisopropyl ethylamine resin (161 mg, 0.5828 mmoles) was added to each tube. A freshly prepared 1M solution of the appropriate amine R1NH2in anhydrous 1,4-dioxane (0.2185 mL, 0.2185 mmoles) was added to each tube and the tubes were sealed and heated at 70° C. for 78 h with magnetic stirring in the reaction block. Each tube was filtered and the resin was washed with anhydrous 1,4-dioxane and then dichloromethane. The combined individual filtrates from each tube were evaporated to dryness and the residues were each re-dissolved in anhydrous 1,4-dioxane (5 mL) and placed in GeneVac reaction tubes. To each tube was added PS-isocyanate resin (594 mg, 0.8742 mmoles) and PS-trisamine resin (129 mg, 0.4371 mmoles) and the tubes were stirred at 25° C. for 20 h in the reaction block. The resins were filtered off and washed with anhydrous 1,4-dioxane and dichloromethane. The filtrates from each tube were evaporated to dryness and the residues were each chromatographed on a silica gel column using the column size and the eluant shown in Table 36, to give the title compounds.

Additional physical data for the compounds are given below:

3-Bromo-7-chloro-5-(2-chlorophenyl)pyrazolo[1,5-a]pyrimidine (50 mg, 0.146 mmoles) (prepared as described in Preparative Example 129) was dissolved in anhydrous 1,4-dioxane (5 mL) in a GeneVac Technologies carousel reaction tube. PS-diisopropyl ethylamine resin (161 mg, 0.5828 mmoles) was added to each tube. A freshly prepared solution of the appropriate amine R1NH2(0.219 mmoles) in anhydrous 1,4-dioxane (0.3 mL) was added to each tube, with the exception of Example 99-5 in which the amine was dissolved in 10% MeOH in 1,4-dioxane (0.3 mL), and the tubes were sealed and heated at 70° C. for 74 h with magnetic stirring in the reaction block. Each tube was filtered and the resin was washed with anhydrous 1,4-dioxane and then dichloromethane. The combined individual filtrates from each tube were evaporated to dryness and the residues were each re-dissolved in anhydrous 1,4-dioxane (5 mL) and placed in GeneVac reaction tubes. To each tube was added PS-isocyanate resin (594 mg, 0.8742 mmoles) and PS-trisamine resin (129 mg, 0.4371 mmoles) and the tubes were stirred at 25° C. for 20 h in the reaction block. The resins were filtered off and washed with anhydrous 1,4-dioxane and dichloromethane. The filtrates from each tube were evaporated to dryness and the residues were each chromatographed on a silica gel column using the column size and the eluant shown in Table 37, to give the title compounds.

Additional physical data for the compounds are given below:

This enantiomer may be prepared by essentially the same manner as described above.

To a solution of the compound prepared in Example 204 (1.11 g, 2.12 mmol) in anhydrous acetonitrile (20 mL) was added TMSI (1.70 g, 8.52 mmol), dropwise at ambient temperature. After 10 minutes the acetonitrile was removed in vacuo. The resulting yellow foam was treated with 2 N HCl solution (7 mL) and then washed immediately with Et2O (5×). The pH of the aqueous was adjusted to 10 with 50% NaOH (aq) and the product was isolated by saturation of the solution with NaCl (s) followed by extraction with CH2Cl2(5×) to give the crystalline product (733 mg, 89% yield). MH+=387; m. p.=207.5° C.

By essentially the same procedure set forth in Example 462 only substituting the compounds shown in Column 2 of Table 38, the compounds shown in Column 3 of Table 38 were prepared.

A solution of the sulfonic acid (560 mg, 1.17 mmol) in 5 mL of dry DMF was cooled to 0° C. and SOCl2(278 mg, 2.34 mmol) was added. The reaction mixture was brought to RT and stirred overnight. The next day the contents were poured on ice and the pH was carefully adjusted to 8. The product was extracted in to EtOAc and the solvent was removed after drying (Na2SO4) to provide 240 mg (41%) of the crude sulfonyl chloride which was used for the next step without further purification.1H NMR (CDCl3) δ 8.20-8.10 (m, 1H), 8.10-7.95 (m, 3H), 7.65 (d, 2H), 7.45-7.35 (m, 1H), 7.35-7.20 (m, 1H), 7.15-7.05 (m, 1H), 6.95 (t, 1H), 4.85 (d, 2H).

A mixture of the compound prepared in Example 129 (300 mg, 0.66 mmol), NaOH (5 g), CH3OH—H2O (100 mL, 90:10) was stirred at 25 C for about 15 h. Progress of hydrolysis was checked by TLC. Reaction mixture was concentrated to remove methanol. The concentrate was diluted with 50 mL water, and extracted with ether to remove any un-reacted ester. Aqueous solution, thus obtained, was neutralized with 3 N HCl to pH 4 to obtain free acid, filtered and washed repeatedly with water. The acid was dried under vacuum (270 mg, 93%) and used without further purification.

By essentially the same procedure set forth in Example 475 only substituting the compounds in Column 2 of Table 39, the compounds in Column 3 of Table 39 were prepared.

Additional data for select examples shown below:

A mixture of the acid from Example 475 (85 mg, 0.193 mmol) and Et3N (20 mg, 0.193 mmol) in THF (20 mL) was stirred at 25 C for 15 min. Isobutyryl chloroformate (28 mg, 0.205 mmol) was added to the reaction mixture and stirred for 10 min followed by addition of NH4OH solution (0.5 mL). The reaction mixture was stirred for 1 hr and concentrated to dryness. The dry mass was purified by column chromatography.

By essentially the same procedure set forth in Example 480 only substituting the carboxylic acid shown in Column 2 of Table 40 and the amine shown in Column 3 of Table 40, the compounds shown in Column 4 of Table 40 were prepared.

Additional data for select examples given below:

A solution of NaOH (59 mg, 1.47 mmol) in 1 mL of water was added to a suspension of NH2OH.HCl (102 mg, 1.47 mmol) in 10 mL of methanol at 0° C. After 5 min, the compound prepared in Example 210.10 (208 mg, 0.49 mmol) was added and the reaction mixture was refluxed overnight. The solvent was removed in vacuo and the residue was partitioned between water and EtOAc. The EtOAc layer was dried (Na2SO4) and the solvent was evaporated. The resulting crude amidoxime was suspended in trimethyl orthoformate containing catalytic amount of PTS acid and refluxed overnight. The solvent was removed and the residue was taken up in EtOAc. The EtOAc layer was washed with aq NaHCO3followed by water and brine. The solvent was evaporated and the residue was purified by chromatography (silica, hexane:EtOAc (1:1)) to provide 80 mg (35%) of the oxadiazole.1H NMR (CDCl3) δ 8.75 (s, 1H), 8.20-8.10 (m, 3H), 8.03 (s, 1H), 7.53 (d, J=9 Hz, 2H), 7.45-7.36 (m, 1H), 7.30-7.22 (m, 2H), 7.16-7.08 (m, 1H), 6.80 (t, J=5 Hz, 1H), 6.56 (s, 1H).

By essentially the same procedure set forth in Example 509 only substituting the compound prepared in Preparative Example 192, the above compound was prepared. yield=75; MH+=453; m. p.=79.3° C.

A mixture of the nitrile (235 mg, 0.56 mmol) and Me3SnN3(343 mg, 1.67 mmol) in 20 mL of dry toluene was refluxed for 2 days under Ar. The solvent was removed in vacuo and the residue was dissolved in dry methanol. HCl gas was bubbled through the solution for 15 min and the reaction mixture allowed to stand at overnight at RT. The next day, the solvent was removed, the residue was taken in water and the pH was adjusted to 5. The precipitated product was extracted into EtOAc. Evaporation of the EtOAc layer after drying (Na2SO4) provided the residue which was purified by chromatography (silica, DCM:MeOH (98:2→95:5)) to yield 50 mg (19%) of the pure tetrazole.1H NMR (CD3OD) δ 8.10 (s, 1H), 8.00 (d, J=9 Hz, 2H), 7.90 (t, J=7 Hz, 1H), 7.65 (d, J=9 Hz, 2H), 7.50-7.40 (m, 1H), 7.30-7.10 (m, 2H), 6.45 (s, 1H), 4.80 (s, 2H); LCMS: MH+=465.0

By essentially the same procedure set forth in Example 511 only substituting the compound prepared in Example 192, the above compound was prepared. Yield=64; MH+=453; m. p.=238.9° C.

The compound prepared in Example 157 was dissolved in dioxane (30 mL) and a HCl-dioxane solution (4 M, 30 mL) was added. The reaction mixture was stirred at room temperature for 4 h. The reaction mixture was evaporated under reduced pressure and ethyl acetate (200 mL) was added. The organic solution was washed with 1 N sodium hydroxide followed by saturated brine. The organic layer was dried over anhydrous sodium sulfate and evaporated under reduced pressure. MH+=442.1

By essentially the same procedure set forth in Example 513, only substituting the compounds shown in Column 2 of Table 41, the compounds shown in Column 3 of Table 41 were prepared.

General Procedure for 5-piperidinyl Parallel Library Formation

To a mixture of the starting material (80 mg, 0.21 mmol) shown in Column 2 of Table 42 in anhydrous CH2Cl2(1.5 mL) was added DIPEA (75 μL, 0.42 mmol) and the appropriate capping reagent (1.1 equiv., 0.23 mmol). After 1 to 2 h, the reaction mixture was applied to 1000 micron preparatory TLC plate and was subsequently developed using a 8-10% EtOH—CH2Cl2as eluent to afford the compounds shown in Column 3 of Table 42.

Additional data for select examples given below.

General Procedure 1: Procedure for the Amide Formation Parallel Synthesis:

Parallel synthesis was conducted in polypropylene 96-well reaction blocks with removable top seal and fixed bottom seal. Each reaction well was fitted with a 20 micron polypropylene bottom frit and the maximum volume was 3 mL. Collection block was not fitted with bottom frit. To each reaction well was added a solution of an amine (0.021 mmol) dissolved in a DMF-THF-MeCN mixture (4:3:3 v/v, 0.95 mL), EDC resin (P-EDC, Polymer Laboratories Ltd., 43 mg, 0.063 mmol), 1-hydroxybenzotriazole (HOBt, 5.67 mg, 0.042 mmol) and a solution of a carboxylic acid in dimethylformamide (1 M, 0.0315 mL, 0.0315 mmol). The reaction mixture was agitated at room temperature for 16 h. The crude product solution was filtered into a reaction well loaded with trisamine resin (P—NH2, Argonaut Tech. Inc., 30 mg, 0.126 mmol) and isocyanate resin (P—NCO, Argonaut Tech. Inc., 35 mg, 0.063 mmol). The reaction mixture was agitated at room temperature for 16 h and filtered into the collection block. The product solution was evaporated under reduced pressure to afford the desired amide product.

General Procedure 2: Procedure for the Sulfonamide Formation Parallel Synthesis

Parallel synthesis was conducted in polypropylene 96-well reaction blocks with removable top seal and fixed bottom seal. Each reaction well was fitted with a 20 micron polypropylene bottom frit and the maximum volume was 3 mL. Collection block was not fitted with bottom frit. To each reaction well was added a solution of an amine (0.021 mmol) dissolved in a DMF-THF-MeCN mixture (3:2:2 v/v, 0.95 mL), DIEA resin (P-DIEA, Argonaut Tech. Inc., 18 mg, 0.063 mmol) and a solution of a sulfonyl chloride in dimethylformamide (1 M, 0.0315 mL, 0.0315 mmol). The reaction mixture was agitated at room temperature for 16 h. The crude product solution was filtered into a reaction well loaded with trisamine resin (P—NH2, Argonaut Tech. Inc., 30 mg, 0.126 mmol) and isocyanate resin (P—NCO, Argonaut Tech. Inc., 35 mg, 0.063 mmol). The reaction mixture was agitated at room temperature for 16 h and filtered into the collection block. The product solution was evaporated under reduced pressure to afford the desired sulfonamide product.

General Procedure 3: Procedure for the Urea Formation Parallel Synthesis

Parallel synthesis was conducted in polypropylene 96-well reaction blocks with removable top seal and fixed bottom seal. Each reaction well was fitted with a 20 micron polypropylene bottom frit and the maximum volume was 3 mL. Collection block was not fitted with bottom frit. To each reaction well was added a solution of an amine (0.021 mmol) dissolved in a DMF-MeCN mixture (1:1 v/v, 0.95 mL) and a solution of an isocyanate in dichloromethane (0.33 M, 0.126 mL, 0.042 mmol). The reaction mixture was agitated at room temperature for 16 h. The crude product solution was filtered into a reaction well loaded with trisamine resin (P—NH2, Argonaut Tech. Inc., 30 mg, 0.126 mmol) and isocyanate resin (P—NCO, Argonaut Tech. Inc., 35 mg, 0.063 mmol). The reaction mixture was agitated at room temperature for 16 h and filtered into the collection block. The product solution was evaporated under reduced pressure to afford the desired urea product.

General Procedure 4: Procedure for the Reductive Alkylation Parallel Synthesis

Parallel synthesis was conducted in polypropylene 96-well reaction blocks with removable top seal and fixed bottom seal. Each reaction well was fitted with a 20 micron polypropylene bottom frit and the maximum volume was 3 mL. Collection block was not fitted with bottom frit. To each reaction well was added a solution of an amine (0.021 mmol) dissolved in AcOH-DCE mixture (1:99 v/v, 0.5 mL), a solution of an aldehyde or ketone in dichloroethane (1 M, 0.147 mL, 0.147 mmol), and a solution of tetramethylammonium triacetoxyborohydride (11 mg, 0.042 mmol) dissolved in AcOH-DCE mixture 1:99 v/v, 0.5 mL). The reaction mixture was agitated at room temperature for 3 days. The crude product solution was filtered into a reaction well loaded with sulfonic acid resin Lanterns (P—SO3H, MimotopesPty Ltd., 0.3 mmol). The reaction mixture was agitated at room temperature for 2 h and decanted. The product resin Lanterns were washed with methanol (1 mL) for three times. A solution of ammonia in methanol (2 M, 1.2 mL) was added. The reaction mixture was agitated at room temperature for 30 min. and filtered into the collection block. The product solution was evaporated under reduced pressure to afford the desired tertiary amine product.

General Procedure 5: Procedure for the Parallel Synthesis of 7,N-substituted pyrazolo[1,5a]pyrimidines

To 3-bromo-7-chloro-5-(2-chloro-phenyl)-pyrazolo[1,5-a]pyrimidine (9.0 mg, 0.03 mmol) in tetrahydrofuran were added di-iso-propylethylamine (12 μL, 0.07), followed by cyclopropylmethylamine (70 μL, 0.07 mmol; 1M solution in DMF). The reaction mixture was heated to 70° C. for 36 h and then cooled to rt. The mixture was treated with (P—NCO, Argonaut Tech. Inc 70 mg, 0.12 mmol), and P—CO3−(Argonaut Tech. Inc 70 mg, 0.24 mmol) and shaken at rt for 12-18 h. The solution was filtered and evaporated to dryness to provide the product. observed m/z 375.21.

General Procedure 6: Procedure for the Parallel Synthesis of 5,N-substituted pyrazolo[1,5a]pyrimidines

Parallel synthesis was performed in a 96 well polypropylene blocks as described elsewhere. In the instance that heating was required, reactions were conducted in 2.5 mL glass tubes individually sealed with a polypropylene mat and heating achieved by a 96 well heat transfer block.

To the 3-bromo-5-chloro-7-N-Boc-alkylamino-pyrazolo[1,5-a]pyrimidine (17 mg, 0.04 mmol) in p-dioxane were added DIEA (9 μL, 0.05), followed by cyclopropyl-methylamine (80 μL, 0.08 mmol; 1M solution in isopropanol). The reaction mixture was heated to 90° C. for 36 h and then cooled to rt. The mixture was treated with P—NCO (Argonaut Tech. Inc. 70 mg, 0.12 mmol) and P—CO3−(ArgonautTech. Inc. 70 mg, 0.24 mmol) and shaken at rt for 12-18 h. The solution was filtered and evaporated to dryness to provide the product.

Step B (Acidic):

The product from STEP A was taken up in 35% TFA/DCM and agitated for 4 h followed by concentration under high vacuum. The residue was treated with 10% HCl(aq) in MeOH agitated for 2 h and then concentrated to give the desired product. observed m/z 375.21.

Step B (Basic):

The product from step A was taken up in EtOH and treated with Ambersep® 900-OH ion exchange resin (Acros, 100 mg), heated at reflux for 48 h with gently stirring. The reaction mixture was cooled to rt, filtered and concentrated to provide the desired product.

By utilizing the procedure set forth in General Procedure 1 and the compound from Example 462 shown below, the compounds with the observed m/z shown in Table 43 were prepared.

By utilizing the procedure set forth in General Procedure 1 and the compound from Example 471 shown below, the compounds shown in Table 44 with the observed m/z were prepared.

By utilizing the procedure set forth in General Procedure 1 and the compound from Example 515 shown below, the compounds shown in Table 45 with the observed m/z were prepared.

By utilizing the procedure set forth in General Procedure 1 and the compound from Example 513 shown below, the compounds shown in Table 46 with the observed m/z were prepared.

By utilizing the procedure set forth in General Procedure 1 and the compound from Example 526 shown below, the compounds shown in Table 47 with the observed m/z were prepared.

By utilizing the procedure set forth in General Procedure 1 and the compound from Example 524 shown below, the compounds shown in Table 48 with the observed m/z were prepared.

By utilizing the procedure set forth in General Procedure 1 and the compound from Example 525 shown below, the compounds shown in Table 49 with the observed m/z were prepared.

By utilizing the procedure set forth in General Procedure 1 and the compound from Example 526.10 shown below, the compounds shown in Table 50 with the observed m/z were prepared.

By utilizing the procedure set forth in General Procedure 1 and the compound from Example 518 shown below, the compounds shown in Table 51 with the observed m/z were prepared.

By utilizing the procedure set forth in General Procedure 1 and the compound from Example 519 shown below, the compounds shown in Table 52 with the observed m/z were prepared.

By utilizing the procedure set forth in General Procedure 1 and the compound from Example 520 shown below, the compounds shown in Table 53 with the observed m/z were prepared.

By utilizing the procedure set forth in General Procedure 1 and the compound from Example 522 shown below, the compounds shown in Table 54 with the observed m/z were prepared.

By utilizing the procedure set forth in General Procedure 1 and the compound from Example 523 shown below, the compounds shown in Table 55 with the observed m/z were prepared.

By utilizing the procedure set forth in General Procedure 2 and the compound from Example 462 shown below, the compounds shown in Table 56 with the observed m/z were prepared.

By utilizing the procedure set forth in General Procedure 2 and the compound from Example 471 shown below, the compounds shown in Table 57 with the observed m/z were prepared.

By utilizing the procedure set forth in General Procedure 2 and the compound from Example 515 shown below, the compounds shown in Table 58 with the observed m/z were prepared.

By utilizing the procedure set forth in General Procedure 2 and the compound from Example 513 shown below, the compounds shown in Table 59 with the observed m/z were prepared.

By utilizing the procedure set forth in General Procedure 2 and the compound from Example 513 shown below, the compounds shown in Table 60 with the observed m/z were prepared.

By utilizing the procedure set forth in General Procedure 2 and the compound from Example 524 shown below, the compounds shown in Table 61 with the observed m/z were prepared.

By utilizing the procedure set forth in General Procedure 2 and the compound from Example 525 shown below, the compounds shown in Table 62 with the observed m/z were prepared.

By utilizing the procedure set forth in General Procedure 2 and the compound from Example 526.10 shown below, the compounds shown in Table 63 with the observed m/z were prepared.

By utilizing the procedure set forth in General Procedure 2 and the compound from Example 518 shown below, the compounds shown in Table 64 with the observed m/z were prepared.

By utilizing the procedure set forth in General Procedure 2 and the compound from Example 519 shown below, the compounds shown in Table 65 with the observed m/z were prepared.

By utilizing the procedure set forth in General Procedure 2 and the compound from Example 520 shown below, the compounds shown in Table 67 with the observed m/z were prepared.

By utilizing the procedure set forth in General Procedure 2 and the compound from Example 521 shown below, the compounds shown in Table 68 with the observed m/z were prepared.

By utilizing the procedure set forth in General Procedure 2 and the compound from Example 523 shown below, the compounds shown in Table 69 with the observed m/z were prepared.

By utilizing the procedure set forth in General Procedure 3 and the compound from Example 462 shown below, the compounds shown in Table 70 with the observed m/z were prepared.

By utilizing the procedure set forth in General Procedure 3 and the compound from Example 471 shown below, the compounds shown in Table 71 with the observed m/z were prepared.

By utilizing the procedure set forth in General Procedure 3 and the compound from Example 513 shown below, the compounds shown in Table 72 with the observed m/z were prepared.

By utilizing the procedure set forth in General Procedure 3 and the compound from Example 524 shown below, the compounds shown in Table 73 with the observed m/z were prepared.

By utilizing the procedure set forth in General Procedure 3 and the compound from Example 524 shown below, the compounds shown in Table 74 with the observed m/z were prepared.

By utilizing the procedure set forth in General Procedure 3 and the compound from Example 519 shown below, the compounds shown in Table 75 with the observed m/z were prepared.

By utilizing the procedure set forth in General Procedure 3 and the compound from Example 520 shown below, the compounds shown in Table 76 with the observed m/z were prepared.

By utilizing the procedure set forth in General Procedure 3 and the compound from Example 521 shown below, the compounds shown in Table 77 with the observed m/z were prepared.

By utilizing the procedure set forth in General Procedure 3 and the compound from Example 523 shown below, the compounds shown in Table 78 with the observed m/z were prepared.

By utilizing the procedure set forth in General Procedure 4 and the compound from Example 462 shown below, the compounds shown in Table 79 with the observed m/z were prepared.

By utilizing the procedure set forth in General Procedure 4 and the compound from Example 471 shown below, the compounds shown in Table 80 with the observed m/z were prepared.

By utilizing the procedure set forth in General Procedure 4 and the compound from Example 525 shown below, the compounds shown in Table 81 with the observed m/z were prepared.

By utilizing the procedure set forth in General Procedure 4 and the compound from Example 526.10 shown below, the compounds shown in Table 82 with the observed m/z were prepared.

By utilizing the procedure set forth in General Procedure 4 and the compound from Example 521 shown below, the compounds shown in Table 83 with the observed m/z were prepared.

By utilizing the procedure set forth in General Procedure 4 and the compound from Example 523 shown below, the compounds shown in Table 84 with the observed m/z were prepared.

By utilizing the procedure set forth in General Procedure 5 and the compound from Preparative Example 81 shown below, the compounds shown in Table 85 with the observed m/z were prepared.

By utilizing the procedure set forth in General Procedure 6 and the compound from Preparative Example 196, the compounds shown in Table 86 with the observed m/z were prepared.

BACULOVIRUS CONSTRUCTIONS: Cyclins A and E were cloned into pFASTBAC (Invitrogen) by PCR, with the addition of a GluTAG sequence (EYMPME) at the amino-terminal end to allow purification on anti-GluTAG affinity columns. The expressed proteins were approximately 46 kDa (cyclin E) and 50 kDa (cyclin A) in size. CDK2 was also cloned into pFASTBAC by PCR, with the addition of a haemaglutinin epitope tag at the carboxy-terminal end (YDVPDYAS). The expressed protein was approximately 34 kDa in size.

ENZYME PRODUCTION: Recombinant baculoviruses expressing cyclins A, E and CDK2 were infected into SF9 cells at a multiplicity of infection (MOI) of 5, for 48 hrs. Cells were harvested by centrifugation at 1000 RPM for 10 minutes. Cyclin-containing (E or A) pellets were combined with CDK2 containing cell pellets and lysed on ice for 30 minutes in five times the pellet volume of lysis buffer containing 50 mM Tris pH 8.0, 0.5% NP40, 1 mM DTT and protease/phosphatase inhibitors (Roche Diagnostics GmbH, Mannheim, Germany). Mixtures were stirred for 30-60 minutes to promote cyclin-CDK2 complex formation. Mixed lysates were then spun down at 15000 RPM for 10 minutes and the supernatant retained. 5 ml of anti-GluTAG beads (for one liter of SF9 cells) were then used to capture cyclin-CDK2 complexes. Bound beads were washed three times in lysis buffer. Proteins were competitively eluted with lysis buffer containing 100-200 ug/mL of the GluTAG peptide. Eluate was dialyzed overnight in 2 liters of kinase buffer containing 50 mM Tris pH 8.0, 1 mM DTT, 10 mM MgCl2, 100 uM sodium orthovanadate and 20% glycerol. Enzyme was stored in aliquots at −70° C.

IN VITRO KINASE ASSAY: CDK2 kinase assays (either cyclin A or E-dependent) were performed in low protein binding 96-well plates (Corning Inc, Corning, N.Y.). Enzyme was diluted to a final concentration of 50 ug/ml in kinase buffer containing 50 mM Tris pH 8.0, 10 mM MgCl2, 1 mM DTT, and 0.1 mM sodium orthovanadate. The substrate used in these reactions was a biotinylated peptide derived from Histone H1 (from Amersham, UK). The substrate was thawed on ice and diluted to 2 uM in kinase buffer. Compounds were diluted in 10% DMSO to desirable concentrations. For each kinase reaction, 20 ul of the 50 ug/ml enzyme solution (1 ug of enzyme) and 20 ul of the 1 uM substrate solution were mixed, then combined with 10 ul of diluted compound in each well for testing. The kinase reaction was started by addition of 50 ul of 4 uM ATP and 1 uCi of33P-ATP (from Amersham, UK). The reaction was allowed to run for 1 hour at room temperature. The reaction was stopped by adding 200 ul of stop buffer containing 0.1% Triton X-100, 1 mM ATP, 5 mM EDTA, and 5 mg/ml streptavidine coated SPA beads (from Amersham, UK) for 15 minutes. The SPA beads were then captured onto a 96-well GF/B filter plate (Packard/Perkin Elmer Life Sciences) using a Filtermate universal harvester (Packard/Perkin Elmer Life Sciences.). Non-specific signals were eliminated by washing the beads twice with 2M NaCl then twice with 2 M NaCl with 1% phosphoric acid. The radioactive signal was then measured using a TopCount 96 well liquid scintillation counter (from Packard/Perkin Elmer Life Sciences).

IC50DETERMINATION: Dose-response curves were plotted from inhibition data generated, each in duplicate, from 8 point serial dilutions of inhibitory compounds. Concentration of compound was plotted against % kinase activity, calculated by CPM of treated samples divided by CPM of untreated samples. To generate IC50values, the dose-response curves were then fitted to a standard sigmoidal curve and IC50values were derived by nonlinear regression analysis. The thus obtained IC50values for the compounds of the invention are shown in Table 87. These kinase activities were generated by using cyclin A or cyclin E using the above-described assay.

As demonstrated above by the assay values, the compounds of the present invention exhibit excellent CDK inhibitory properties.