# Patent

## Title
SGC stimulators

## Abstract

Compounds of Formula I are described. They are useful as stimulators of sGC, particularly NO-independent, heme-dependent stimulators. These compounds may be useful for treating, preventing or managing various disorders that are herein disclosed.

## Background
CROSS REFERENCE TO RELATED APPLICATIONS
This patent application is a 371 filing of PCT/US2013/060295, filed 18 Sep. 2013, which claims the benefit of U.S. Provisional Application No. 61/702,303 filed 18 Sep. 2012, the disclosures of which are herein incorporated by reference in their entirety.


FIELD OF THE INVENTION
The present disclosure relates to stimulators of soluble guanylate cyclase (sGC), pharmaceutical formulations comprising thereof and their uses, alone or in combination with one or more additional agents, for treating and/or preventing various diseases, wherein an increase in the concentration of nitric oxide (NO) or an increase in the concentration of cyclic Guanosine Monophosphate (cGMP) might be desirable.
BACKGROUND OF THE INVENTION
Soluble guanylate cyclase (sGC) is the primary receptor for nitric oxide (NO) in vivo. sGC can be activated via both NO-dependent and NO-independent mechanisms. In response to this activation, sGC converts GTP into the secondary messenger cyclic GMP (cGMP). The increased level of cGMP, in turn, modulates the activity of downstream effectors including protein kinases, phosphodiesterases (PDEs) and ion channels.
In the body, NO is synthesized from arginine and oxygen by various nitric oxide synthase (NOS) enzymes and by sequential reduction of inorganic nitrate. Three distinct isoforms of NOS have been identified: inducible NOS (iNOS or NOS II) found in activated macrophage cells; constitutive neuronal NOS (nNOS or NOS I), involved in neurotransmission and long term potentiation; and constitutive endothelial NOS (eNOS or NOS III) which regulates smooth muscle relaxation and blood pressure.
Experimental and clinical evidence indicates that reduced bioavailability and/or responsiveness to endogenously produced NO contributes to the development of cardiovascular, endothelial, renal and hepatic disease, as well as erectile dysfunction and other sexual disorders (e.g. female sexual disorder or vaginal atrophy). In particular, the NO signaling pathway is altered in cardiovascular diseases, including, for instance, systemic and pulmonary hypertension, heart failure, angina, stroke, thrombosis and other thromboembolic diseases, peripheral arterial disease, fibrosis of the liver, lung or kidney and atherosclerosis.
sGC stimulators are also useful in the treatment of lipid related disorders such as e.g., dyslipidemia, hypercholesterolemia, hypertriglyceridemia, sitosterolemia, fatty liver disease, and hepatitis.
Pulmonary hypertension (PH) is a disease characterized by sustained elevation of blood pressure in the pulmonary vasculature (pulmonary artery, pulmonary vein and pulmonary capillaries), which results in right heart hypertrophy, eventually leading to right heart failure and death. In PH, the bioactivity of NO and other vasodilators such as prostacyclin is reduced, whereas the production of endogenous vasoconstrictors such as endothelin is increased, resulting in excessive pulmonary vasoconstriction. sGC stimulators have been used to treat PH because they promote smooth muscle relaxation, which leads to vasodilation.
Treatment with NO-independent sGC stimulators also promoted smooth muscle relaxation in the corpus cavernosum of healthy rabbits, rats and humans, causing penile erection, indicating that sGC stimulators are useful for treating erectile dysfunction.
NO-independent, heme-dependent, sGC stimulators, such as those disclosed herein, have several important differentiating characteristics, including crucial dependency on the presence of the reduced prosthetic heme moiety for their activity, strong synergistic enzyme activation when combined with NO and stimulation of the synthesis of cGMP by direct stimulation of sGC, independent of NO. The benzylindazole compound YC-1 was the first sGC stimulator to be identified. Additional sGC stimulators with improved potency and specificity for sGC have since been developed. These compounds have been shown to produce anti-aggregatory, anti-proliferative and vasodilatory effects.
Since compounds that stimulate sGC in an NO-independent manner offer considerable advantages over other current alternative therapies, there is a need to develop novel stimulators of sGC. They are potentially useful in the prevention, management and treatment of disorders such as pulmonary hypertension, arterial hypertension, heart failure, atherosclerosis, inflammation, thrombosis, renal fibrosis and failure, liver cirrhosis, lung fibrosis, erectile dysfunction, female sexual arousal disorder and vaginal atrophy and other cardiovascular disorders; they are also potentially useful for the prevention, management and treatment of lipid related disorders.
SUMMARY OF THE INVENTION
The present invention is directed to compounds according to Formula I, or pharmaceutically acceptable salts thereof,




wherein:

    ring B is a 5-membered heteroaryl ring selected from furan or thiophene;
    n is an integer selected from 0 to 3;
    each JB is independently selected from halogen, —CN, a C1-6 aliphatic, —ORB or a C3-8 cycloaliphatic group; wherein each said C1-6 aliphatic and each said C3-8 cycloaliphatic group is optionally and independently substituted with up to 3 instances of R3;
    each RB is independently selected from hydrogen, a C1-6 aliphatic or a C3-8 cycloaliphatic ring; wherein each said C1-6 aliphatic and each said C3-8 cycloaliphatic ring is optionally and independently substituted with up to 3 instances of R3a;
    each R3 is independently selected from halogen, —CN, C1-4 alkyl, C1-4 haloalkyl, —O(C1-4 alkyl) or —O(C1-4 haloalkyl);
    each R3a is independently selected from halogen, —CN, C1-4 alkyl, C1-4 haloalkyl, —O(C1-4 alkyl) or —O(C1-4 haloalkyl);
    X is selected from N, C-JD or C—H;
    is an integer selected from 0 to 3;
    each JD is independently selected from halogen, —NO2, —ORD, —SRD, —C(O)RD, —C(O)ORD, —C(O)N(RD)2, —CN, —N(RD)2, —N(Rd)C(O)RD, N(Rd)C(O)ORD, —SO2RD, —SO2N(RD)2, —N(Rd)SO2RD, a C1-6 aliphatic, —(C1-6 aliphatic)-RD, a C3-8 cycloaliphatic ring, a 6 to 10-membered aryl ring, a 4 to 8-membered heterocyclic ring or a 5 to 10-membered heteroaryl ring; wherein each said 4 to 8-membered heterocylic ring and each said 5 to 10-membered heteroaryl ring contains between 1 and 3 heteroatoms independently selected from O, N or S; and wherein each said C1-6 aliphatic, each said C3-8 cycloaliphatic ring, each said 6 to 10-membered aryl ring, each said 4 to 8-membered heterocyclic ring and each said 5 to 10-membered heteroaryl ring is optionally and independently substituted with up to 3 instances of R5;
    each RD is independently selected from hydrogen, a C1-6 aliphatic, —(C1-6 aliphatic)-Rf, a C3-8 cycloaliphatic ring, a 4 to 8-membered heterocyclic ring, phenyl or a 5 to 6-membered heteroaryl ring; wherein each said 4 to 8-membered heterocylic ring and each said 5 to 6-membered heteroaryl ring contains between 1 and 3 heteroatoms independently selected from O, N or S; and wherein each said C1-6 aliphatic, each said C3-8 cycloaliphatic ring, each said 4 to 8-membered heterocyclic ring, each said phenyl and each said 5 to 6-membered heteroaryl ring is optionally and independently substituted with up to 3 instances of R5a;
    each Rd is independently selected from hydrogen, a C1-6 aliphatic, —(C1-6 aliphatic)-Rf, a C3-8 cycloaliphatic ring, a 4 to 8-membered heterocyclic ring, phenyl or a 5 to 6-membered heteroaryl ring; wherein each said heterocylic ring and each said heteroaryl ring contains between 1 and 3 heteroatoms independently selected from O, N or S; and wherein each said C1-6 aliphatic, each said C3-8 cycloaliphatic ring, each said 4 to 8-membered heterocyclic ring, each said phenyl and each said 5 to 6-membered heteroaryl ring is optionally and independently substituted by up to 3 instances of R5b;
    each Rf is independently selected from a C3-8 cycloaliphatic ring, a 4 to 8-membered heterocyclic ring, phenyl or a 5 to 6-membered heteroaryl ring; wherein each said heterocylic ring and each said heteroaryl ring contains between 1 and 3 heteroatoms independently selected from O, N or S; and wherein each said C1-6 aliphatic, each said C3-8 cycloaliphatic ring, each said 4 to 8-membered heterocyclic ring, each said phenyl and each said 5 to 6-membered heteroaryl ring is optionally and independently substituted by up to 3 instances of R5c;
    when JD is —C(O)N(RD)2, —N(RD)2 or —SO2N(RD)2, the two instances of RD together with the nitrogen atom attached to the RD, alternatively form a 4 to 8-membered heterocyclic ring or a 5-membered heteroaryl ring; wherein each said 4 to 8-membered heterocyclic ring and each said 5-membered heteroaryl ring optionally contains up to 2 additional heteroatoms independently selected from N, O or S, and wherein each said 4 to 8-membered heterocyclic ring and each said 5-membered heteroaryl ring is optionally and independently substituted by up to 3 instances of R5; or
    when JD is —N(Rd)C(O)RD, the RD group together with the carbon atom attached to the RD group, with the nitrogen atom attached to the Rd group and with the Rd group alternatively form a 4 to 8-membered heterocyclic ring or a 5-membered heteroaryl ring; wherein each said 4 to 8-membered heterocyclic ring and each said 5-membered heteroaryl ring optionally contains up to 2 additional heteroatoms independently selected from N, O or S, and wherein each said 4 to 8-membered heterocyclic ring and each said 5-membered heteroaryl ring is optionally and independently substituted by up to 3 instances of R5;
    when JD is —N(Rd)C(O)ORD, the RD group together with the oxygen atom attached to the RD group, with the carbon atom of the —C(O)— portion of the —N(Rd)C(O)ORD group, with the nitrogen atom attached to the Rd group, and with the Rd group alternatively form a 4 to 8-membered heterocyclic ring or a 5-membered heteroaryl ring; wherein each said 4 to 8-membered heterocyclic ring and each said 5-membered heteroaryl ring optionally contains up to 2 additional heteroatoms independently selected from N, O or S, and wherein each said 4 to 8-membered heterocyclic ring and each said 5-membered heteroaryl ring is optionally and independently substituted by up to 3 instances of R5;
    when JD is —N(Rd)SO2RD, the RD group together with the oxygen atom attached to the RD group, with the sulfur atom attached to said oxygen atom in the —SO2RD portion of the —N(Rd)SO2RD group, with the nitrogen atom attached to the Rd group, and with the Rd group alternatively form a 4 to 8-membered heterocyclic ring or a 5-membered heteroaryl ring; wherein each said 4 to 8-membered heterocyclic ring and each said 5-membered heteroaryl ring optionally contains up to 2 additional heteroatoms independently selected from N, O or S, and wherein each said 4 to 8-membered heterocyclic ring and each said 5-membered heteroaryl ring is optionally and independently substituted by up to 3 instances of R5;
    each R5 is independently selected from halogen, —CN, —NO2, C1-4 alkyl, a C7-12 aralkyl, C3-8 cycloalkyl ring, C1-4 haloalkyl, C1-4 cyanoalkyl, —OR6, —SR6, —OCOR6, —COR6, —C(O) OR6, —C(O)N(R6)2, —N(R6)C(O)R6, —N(R6)2, —SO2R6, —SO2N(R6)2, —N(R6)SO2R6, phenyl or an oxo group; wherein each said phenyl group is optionally and independently substituted with up to 3 instances of halogen, —OH, —NH2, —NH(C1-4 alkyl), —N(C1-4 alkyl)2, —NO2, —CN, C1-4 alkyl, C1-4 haloalkyl, —O(C1-4 alkyl) or —O(C1-4 haloalkyl); and wherein each said C7-12 aralkyl and each said cycloalkyl group is optionally and independently substituted with up to 3 instances of halogen;
    each R5a is independently selected from halogen, —CN, —NO2, C1-4 alkyl, a C7-12 aralkyl, C3-8 cycloalkyl ring, C1-4 haloalkyl, C1-4 cyanoalkyl, —OR6, —SR6, —OCOR6, —COR6, —C(O)OR6, —C(O)N(R6)2, —N(R6)C(O)R6, —N(R6)2, —SO2R6, —SO2N(R6)2, —N(R6)SO2R6, phenyl or an oxo group; wherein each said phenyl group is optionally and independently substituted with up to 3 instances of halogen, —OH, —NH2, —NH(C1-4 alkyl), —N(C1-4 alkyl)2, —NO2, —CN, C1-4 alkyl, C1-4 haloalkyl, —O(C1-4 alkyl) or —O(C1-4 haloalkyl); and wherein each said C7-12 aralkyl and each said cycloalkyl group is optionally and independently substituted with up to 3 instances of halogen;
    each R5b is independently selected from halogen, —CN, —NO2, C1-4 alkyl, a C7-12 aralkyl, C3-8 cycloalkyl ring, C1-4 haloalkyl, C1-4 cyanoalkyl, —OR6, —SR6, —OCOR6, —COR6, —C(O)OR6, —C(O)N(R6)2, —N(R6)C(O)R6, —N(R6)2, —SO2R6, —SO2N(R6)2, —N(R6)SO2R6, phenyl or an oxo group; wherein each said phenyl group is optionally and independently substituted with up to 3 instances of halogen, —OH, —NH2, —NH(C1-4 alkyl), —N(C1-4 alkyl)2, —NO2, —CN, C1-4 alkyl, C1-4 haloalkyl, —O(C1-4 alkyl) or —O(C1-4 haloalkyl); and wherein each said C7-12 aralkyl and each said cycloalkyl group is optionally and independently substituted with up to 3 instances of halogen;
    each R5c is independently selected from halogen, —CN, —NO2, C1-4 alkyl, a C7-12 aralkyl, C3-8 cycloalkyl ring, C1-4 haloalkyl, C1-4 cyanoalkyl, —OR6, —SR6, —OCOR6, —COR6, —C(O)OR6, —C(O)N(R6)2, —N(R6)C(O)R6, —N(R6)2, —SO2R6, —SO2N(R6)2, —N(R6)SO2R6, phenyl or an oxo group; wherein each said phenyl group is optionally and independently substituted with up to 3 instances of halogen, —OH, —NH2, —NH(C1-4 alkyl), —N(C1-4 alkyl)2, —NO2, —CN, C1-4 alkyl, C1-4 haloalkyl, —O(C1-4 alkyl) or —O(C1-4 haloalkyl); and wherein each said C7-12 aralkyl and each said cycloalkyl group is optionally and independently substituted with up to 3 instances of halogen;
    each R6 is independently selected from hydrogen, a C1-4 alkyl, a C2-4 alkenyl, phenyl, a C7-12 aralkyl or a C3-8 cycloalkyl ring; wherein each said C1-4 alkyl, each said C2-4 alkenyl, each said phenyl, each said C7-12 aralkyl and each said C3-8 cycloalkyl group is optionally and independently substituted with up to 3 instances of halogen;
    alternatively, two instances of R6 linked to the same nitrogen atom of R5, together with said nitrogen atom of R5, form a 5 to 8-membered heterocyclic ring or a 5-membered heteroaryl ring; wherein each said 5 to 8-membered heterocyclic ring and each said 5-membered heteroaryl ring optionally contains up to 2 additional heteroatoms independently selected from N, O or S; or
    alternatively, one instance of R6 linked to a nitrogen atom of R5 and one instance of R6 linked to a carbon or sulfur atom of the same R5, together with said nitrogen and said carbon or sulfur atom of the same R5, form a 5 to 8-membered heterocyclic ring or a 5-membered heteroaryl ring; wherein each said 5 to 8-membered heterocyclic ring and each said 5-membered heteroaryl ring optionally contains up to 2 additional heteroatoms independently selected from N, O or S;
    or, alternatively, two JD groups attached to two vicinal ring D atoms, taken together with said two vicinal ring D atoms, form a 5 to 7-membered heterocycle resulting in a fused ring D wherein said 5 to 7-membered heterocycle contains from 1 to 3 heteroatoms independently selected from N, O or S; and wherein said 5 to 7-membered heterocycle is optionally and independently substituted by up to 3 instances of halogen, —OH, —NH2, —NH(C1-4 alkyl), —N(C1-4 alkyl)2, —CN, C1-4 alkyl, C1-4 haloalkyl, —O(C1-4 alkyl), —O(C1-4 haloalkyl), oxo or phenyl; wherein said phenyl is optionally and independently substituted by up to three instances of halogen, —OH, —NH2, —NH(C1-4 alkyl), —N(C1-4 alkyl)2, —NO2, —CN, C1-4 alkyl, C1-4 haloalkyl, —O(C1-4 alkyl) or —O(C1-4 haloalkyl);
    RC is a ring C; ring C is a phenyl ring, a monocyclic 5 or 6-membered heteroaryl ring, a bicyclic 8 to 10-membered heteroaryl ring, a monocyclic 3 to 10-membered cycloaliphatic ring, or a monocyclic 4 to 10-membered heterocycle; wherein said monocyclic 5 or 6-membered heteroaryl ring, said bicyclic 8 to 10-membered heteroaryl ring, or said monocyclic 4 to 10-membered heterocycle contain between 1 and 4 heteroatoms selected from N, O or S; wherein said monocyclic 5 or 6-membered heteroaryl ring is not a 1,3,5-triazinyl ring; and wherein said phenyl, monocyclic 5 to 6-membered heteroaryl ring, bicyclic 8 to 10-membered heteroaryl ring, or monocyclic 4 to 10-membered heterocycle is optionally and independently substituted with up to 3 instances of JC;
    each JC is independently selected from halogen, —CN, —NO2, a C1-6 aliphatic, —ORH, —SRH, —N(RH)2, a C3-8 cycloaliphatic ring or a 4 to 8-membered heterocyclic ring; wherein said 4 to 8-membered heterocyclic ring contains 1 or 2 heteroatoms independently selected from N, O or S; wherein each said C1-6 aliphatic, each said C3-8 cycloaliphatic ring and each said 4 to 8-membered heterocyclic ring, is optionally and independently substituted with up to 3 instances of R7; or alternatively, two JC groups attached to two vicinal ring C atoms, taken together with said two vicinal ring C atoms, form a 5 to 7-membered heterocycle resulting in a fused ring C; wherein said 5 to 7-membered heterocycle contains from 1 to 2 heteroatoms independently selected from N, O or S;
    each RH is independently selected from hydrogen, a C1-6 aliphatic, a C3-8 cycloaliphatic ring or a 4 to 8-membered heterocyclic ring; wherein each said 4 to 8-membered heterocylic ring contains between 1 and 3 heteroatoms independently selected from O, N or S; and wherein each said C1-6 aliphatic, each said C3-8 cycloaliphatic ring, each said 4 to 8-membered heterocyclic ring, is optionally and independently substituted with up to 3 instances of R7a;
    alternatively, two instances of RH linked to the same nitrogen atom of JC, together with said nitrogen atom of JC, form a 4 to 8-membered heterocyclic ring or a 5-membered heteroaryl ring; wherein each said 4 to 8-membered heterocyclic ring and each said 5-membered heteroaryl ring optionally contains up to 2 additional heteroatoms independently selected from N, O or S, and wherein each said 4 to 8-membered heterocyclic ring and each said 5-membered heteroaryl ring is optionally and independently substituted by up to 3 instances of R7b; or
    each R7 is independently selected from halogen, —CN, —NO2, C1-4 alkyl, C1-4 haloalkyl, C3-8 cycloalkyl ring, —OR8, —SR8, —N(R8)2, or an oxo group; wherein each said cycloalkyl group is optionally and independently substituted with up to 3 instances of halogen;
    each R7a is independently selected from halogen, —CN, —NO2, C1-4 alkyl, C1-4 haloalkyl, C3-8 cycloalkyl ring, —OR8, —SR8, —N(R8)2, or an oxo group; wherein each said cycloalkyl group is optionally and independently substituted with up to 3 instances of halogen;
    each R7b is independently selected from halogen, —CN, —NO2, C1-4 alkyl, C1-4 haloalkyl, C3-8 cycloalkyl ring, —OR8, —SR8, —N(R8)2, or an oxo group; wherein each said cycloalkyl group is optionally and independently substituted with up to 3 instances of halogen;
    each R8 is independently selected from hydrogen, a C1-4 alkyl, C1-4 haloalkyl or a C3-8 cycloalkyl ring; wherein each said cycloalkyl group is optionally and independently substituted with up to 3 instances of halogen;
    alternatively, two instances of R8 linked to the same nitrogen atom of R7, together with said nitrogen atom of R7, form a 5 to 8-membered heterocyclic ring or a 5-membered heteroaryl ring; wherein each said 5 to 8-membered heterocyclic ring and each said 5-membered heteroaryl ring optionally contains up to 2 additional heteroatoms independently selected from N, O or S; and
    RA is selected from hydrogen, halogen, C1-4 alkyl or C1-4 haloalkyl.


The invention also provides a method of treating or preventing a disease, health condition or disorder in a subject in need thereof, comprising administering, alone or in combination therapy, a therapeutically or prophylactically effective amount of a compound of Formula I or a pharmaceutically acceptable salt thereof to the subject; wherein the disease, health condition or disorder is a peripheral, pulmonary, hepatic, liver, cardiac or cerebral vascular/endothelial disorder or condition, a urogenital-gynecological disorder or condition, a thromboembolic disease, a fibrotic disorder, or other pulmonary or respiratory disorder, renal or hepatic disorder, metabolic disorder, atherosclerosis or a lipid related disorder that benefits from sGC stimulation or from an increase in the concentration of NO or cGMP.


DETAILED DESCRIPTION OF THE INVENTION
Reference will now be made in detail to certain embodiments of the invention, examples of which are illustrated in the accompanying structures and formulae. While the invention will be described in conjunction with the enumerated embodiments, it will be understood that they are not intended to limit the invention to those embodiments. Rather, the invention is intended to cover all alternatives, modifications and equivalents that may be included within the scope of the present invention as defined by the claims. The present invention is not limited to the methods and materials described herein but include any methods and materials similar or equivalent to those described herein that could be used in the practice of the present invention. In the event that one or more of the incorporated literature references, patents or similar materials differ from or contradict this application, including but not limited to defined terms, term usage, described techniques or the like, this application controls.
DEFINITIONS AND GENERAL TERMINOLOGY
For purposes of this disclosure, the chemical elements are identified in accordance with the Periodic Table of the Elements, CAS version, and the Handbook of Chemistry and Physics, 75th Ed. 1994. Additionally, general principles of organic chemistry are described in “Organic Chemistry”, Thomas Sorrell, University Science Books, Sausalito: 1999, and “March's Advanced Organic Chemistry”, 5th Ed., Smith, M. B. and March, J., eds. John Wiley & Sons, New York: 2001, which are herein incorporated by reference in their entirety.
As described herein, compounds of Formula I may be optionally substituted with one or more substituents, such as illustrated generally below, or as exemplified by particular classes, subclasses and species of the invention. The phrase “optionally substituted” is used interchangeably with the phrase “substituted or unsubstituted.” In general, the term “substituted” refers to the replacement of one or more hydrogen radicals in a given structure with the radical of a specified substituent. Unless otherwise indicated, an optionally substituted group may have a substituent at each substitutable position of the group. When more than one position in a given structure can be substituted with more than one substituent selected from a specified group, the substituent may be either the same or different at each position unless otherwise specified. As will be apparent to one of ordinary skill in the art, groups such as —H, halogen, —NO2, —CN, —OH, —NH2 or —OCF3 would not be substitutable groups.
The phrase “up to”, as used herein, refers to zero or any integer number that is equal or less than the number following the phrase. For example, “up to 3” means any one of 0, 1, 2, or 3. As described herein, a specified number range of atoms includes any integer therein. For example, a group having from 1-4 atoms could have 1, 2, 3 or 4 atoms. When any variable occurs more than one time at any position, its definition on each occurrence is independent from every other occurrence.
Selection of substituents and combinations envisioned by this disclosure are only those that result in the formation of stable or chemically feasible compounds. Such choices and combinations will be apparent to those of ordinary skill in the art and may be determined without undue experimentation. The term “stable”, as used herein, refers to compounds that are not substantially altered when subjected to conditions to allow for their production, detection, and, in some embodiments, their recovery, purification, and use for one or more of the purposes disclosed herein. In some embodiments, a stable compound is one that is not substantially altered when kept at a temperature of 25° C. or less, in the absence of moisture or other chemically reactive conditions, for at least a week. A chemically feasible compound is a compound that can be prepared by a person skilled in the art based on the disclosures herein supplemented, if necessary, relevant knowledge of the art.
A compound, such as the compounds of Formula I or other compounds herein disclosed, may be present in its free form (e.g. an amorphous form, or a crystalline form or a polymorph). Under certain conditions, compounds may also form co-forms. As used herein, the term co-form is synonymous with the term multi-component crystalline form. When one of the components in the co-form has clearly transferred a proton to the other component, the resulting co-form is referred to as a “salt”. The formation of a salt is determined by how large the difference is in the pKas between the partners that form the mixture.
Unless only one of the isomers is drawn or named specifically, structures depicted herein are also meant to include all stereoisomeric (e.g., enantiomeric, diastereomeric, atropoisomeric and cis-trans isomeric) forms of the structure; for example, the R and S configurations for each asymmetric center, Ra and Sa configurations for each asymmetric axis, (Z) and (E) double bond configurations, and cis and trans conformational isomers. Therefore, single stereochemical isomers as well as racemates, and mixtures of enantiomers, diastereomers, and cis-trans isomers (double bond or conformational) of the present compounds are within the scope of the present disclosure. Unless otherwise stated, all tautomeric forms of the compounds of the present disclosure are also within the scope of the invention.
The present disclosure also embraces isotopically-labeled compounds which are identical to those recited herein, but for the fact that one or more atoms are replaced by an atom having an atomic mass or mass number different from the atomic mass or mass number usually found in nature. All isotopes of any particular atom or element as specified are contemplated within the scope of the compounds of the invention, and their uses. Exemplary isotopes that can be incorporated into compounds of the invention include isotopes of hydrogen, carbon, nitrogen, oxygen, phosphorus, sulfur, fluorine, chlorine, and iodine, such as 2H, 3H, 11C, 13C, 14C, 13N, 15N, 15O, 17O, 18O, 32P, 33P, 35S, 18F, 36Cl, 123I, and 125I, respectively. Certain isotopically-labeled compounds of the present invention (e.g., those labeled with 3H and 14C) are useful in compound and/or substrate tissue distribution assays. Tritiated (i.e., 3H) and carbon-14 (i.e., 14C) isotopes are useful for their ease of preparation and detectability. Further, substitution with heavier isotopes such as deuterium (i.e., 2H) may afford certain therapeutic advantages resulting from greater metabolic stability (e.g., increased in vivo half-life or reduced dosage requirements) and hence may be preferred in some circumstances. Positron emitting isotopes such as 15O, 13N, 11C, and 18F are useful for positron emission tomography (PET) studies to examine substrate receptor occupancy. Isotopically labeled compounds of the present invention can generally be prepared by following procedures analogous to those disclosed in the Schemes and/or in the Examples herein below, by substituting an isotopically labeled reagent for a non-isotopically labeled reagent.
The term “aliphatic” or “aliphatic group”, as used herein, means a straight-chain (i.e., unbranched) or branched, substituted or unsubstituted hydrocarbon chain that is completely saturated or that contains one or more units of unsaturation. Unless otherwise specified, aliphatic groups contain 1-20 aliphatic carbon atoms. In some embodiments, aliphatic groups contain 1-10 aliphatic carbon atoms. In other embodiments, aliphatic groups contain 1-8 aliphatic carbon atoms. In still other embodiments, aliphatic groups contain 1-6 aliphatic carbon atoms. In other embodiments, aliphatic groups contain 1-4 aliphatic carbon atoms and in yet other embodiments, aliphatic groups contain 1-3 aliphatic carbon atoms. Suitable aliphatic groups include, but are not limited to, linear or branched, substituted or unsubstituted alkyl, alkenyl, or alkynyl groups. Specific examples of aliphatic groups include, but are not limited to: methyl, ethyl, propyl, butyl, isopropyl, isobutyl, vinyl, sec-butyl, tert-butyl, butenyl, propargyl, acetylene and the like.
The term “alkyl”, as used herein, refers to a saturated linear or branched-chain monovalent hydrocarbon radical. Unless otherwise specified, an alkyl group contains 1-20 carbon atoms (e.g., 1-20 carbon atoms, 1-10 carbon atoms, 1-8 carbon atoms, 1-6 carbon atoms, 1-4 carbon atoms or 1-3 carbon atoms). Examples of alkyl groups include, but are not limited to, methyl, ethyl, n-propyl, isopropyl, n-butyl, isobutyl, s-butyl, t-butyl, pentyl, hexyl, heptyl, octyl and the like.
The term “alkenyl” refers to a linear or branched-chain monovalent hydrocarbon radical with at least one site of unsaturation, i.e., a carbon-carbon, sp2 double bond, wherein the alkenyl radical includes radicals having “cis” and “trans” orientations, or alternatively, “E” and “Z” orientations. Unless otherwise specified, an alkenyl group contains 2-20 carbon atoms (e.g., 2-20 carbon atoms, 2-10 carbon atoms, 2-8 carbon atoms, 2-6 carbon atoms, 2-4 carbon atoms or 2-3 carbon atoms). Examples include, but are not limited to, vinyl, allyl and the like.
The term “alkynyl” refers to a linear or branched monovalent hydrocarbon radical with at least one site of unsaturation, i.e., a carbon-carbon sp triple bond. Unless otherwise specified, an alkynyl group contains 2-20 carbon atoms (e.g., 2-20 carbon atoms, 2-10 carbon atoms, 2-8 carbon atoms, 2-6 carbon atoms, 2-4 carbon atoms or 2-3 carbon atoms). Examples include, but are not limited to, ethynyl, propynyl, and the like.
The term “carbocyclic” refers to a ring system formed only by carbon and hydrogen atoms. Unless otherwise specified, throughout this disclosure, carbocycle is used as a synonym of “non-aromatic carbocycle” or “cycloaliphatic”. In some instances the term can be used in the phrase “aromatic carbocycle”, and in this case it refers to an “aryl group” as defined below.
The term “cycloaliphatic” (or “non-aromatic carbocycle”, “non-aromatic carbocyclyl”, “non-aromatic carbocyclic”) refers to a cyclic hydrocarbon that is completely saturated or that contains one or more units of unsaturation but which is not aromatic, and which has a single point of attachment to the rest of the molecule. Unless otherwise specified, a cycloaliphatic group may be monocyclic, bicyclic, tricyclic, fused, spiro or bridged. In one embodiment, the term “cycloaliphatic” refers to a monocyclic C3-C12 hydrocarbon or a bicyclic C7-C12 hydrocarbon. In some embodiments, any individual ring in a bicyclic or tricyclic ring system has 3-7 members. Suitable cycloaliphatic groups include, but are not limited to, cycloalkyl, cycloalkenyl, and cycloalkynyl. Examples of aliphatic groups include cyclopropyl, cyclobutyl, cyclopentyl, cyclopentenyl, cyclohexyl, cyclohexenyl, cycloheptyl, cycloheptenyl, norbornyl, cyclooctyl, cyclononyl, cyclodecyl, cycloundecyl, cyclododecyl, and the like.
The term “cycloaliphatic” also includes polycyclic ring systems in which the non-aromatic carbocyclic ring can be “fused” to one or more aromatic or non-aromatic carbocyclic or heterocyclic rings or combinations thereof, as long as the radical or point of attachment is on the non-aromatic carbocyclic ring.
“Heterocycle” (or “heterocyclyl” or “heterocyclic), as used herein, refers to a ring system in which one or more ring members are an independently selected heteroatom, which is completely saturated or that contains one or more units of unsaturation but which is not aromatic, and which has a single point of attachment to the rest of the molecule. Unless otherwise specified, through this disclosure, heterocycle is used as a synonym of “non-aromatic heterocycle”. In some instances the term can be used in the phrase “aromatic heterocycle”, and in this case it refers to a “heteroaryl group” as defined below. The term heterocycle also includes fused, spiro or bridged heterocyclic ring systems. Unless otherwise specified, a heterocycle may be monocyclic, bicyclic or tricyclic. In some embodiments, the heterocycle has 3-18 ring members in which one or more ring members is a heteroatom independently selected from oxygen, sulfur or nitrogen, and each ring in the system contains 3 to 7 ring members. In other embodiments, a heterocycle may be a monocycle having 3-7 ring members (2-6 carbon atoms and 1-4 heteroatoms) or a bicycle having 7-10 ring members (4-9 carbon atoms and 1-6 heteroatoms). Examples of bicyclic heterocyclic ring systems include, but are not limited to: adamantanyl, 2-oxa-bicyclo[2.2.2]octyl, 1-aza-bicyclo[2.2.2]octyl.
As used herein, the term “heterocycle” also includes polycyclic ring systems wherein the heterocyclic ring is fused with one or more aromatic or non-aromatic carbocyclic or heterocyclic rings, or with combinations thereof, as long as the radical or point of attachment is on the heterocyclic ring.
Examples of heterocyclic rings include, but are not limited to, the following monocycles: 2-tetrahydrofuranyl, 3-tetrahydrofuranyl, 2-tetrahydrothiophenyl, 3-tetrahydrothiophenyl, 2-morpholino, 3-morpholino, 4-morpholino, 2-thiomorpholino, 3-thiomorpholino, 4-thiomorpholino, 1-pyrrolidinyl, 2-pyrrolidinyl, 3-pyrrolidinyl, 1-tetrahydropiperazinyl, 2-tetrahydropiperazinyl, 3-tetrahydropiperazinyl, 1-piperidinyl, 2-piperidinyl, 3-piperidinyl, 1-pyrazolinyl, 3-pyrazolinyl, 4-pyrazolinyl, 5-pyrazolinyl, 1-piperidinyl, 2-piperidinyl, 3-piperidinyl, 4-piperidinyl, 2-thiazolidinyl, 3-thiazolidinyl, 4-thiazolidinyl, 1-imidazolidinyl, 2-imidazolidinyl, 4-imidazolidinyl, 5-imidazolidinyl; and the following bicycles: 3-1H-benzimidazol-2-one, 3-(1-alkyl)-benzimidazol-2-one, indolinyl, tetrahydroquinolinyl, tetrahydroisoquinolinyl, benzothiolane, benzodithiane, and 1,3-dihydro-imidazol-2-one.
As used herein, the term “aryl” (as in “aryl ring” or “aryl group”), used alone or as part of a larger moiety, as in “aralkyl”, “aralkoxy”, “aryloxyalkyl”, refers to a carbocyclic ring system wherein at least one ring in the system is aromatic and has a single point of attachment to the rest of the molecule. Unless otherwise specified, an aryl group may be monocyclic, bicyclic or tricyclic and contain 6-18 ring members. The term also includes polycyclic ring systems where the aryl ring is fused with one or more aromatic or non-aromatic carbocyclic or heterocyclic rings, or with combinations thereof, as long as the radical or point of attachment is in the aryl ring. Examples of aryl rings include, but are not limited to, phenyl, naphthyl, indanyl, indenyl, tetralin, fluorenyl, and anthracenyl.
The term “aralkyl” refers to a radical having an aryl ring substituted with an alkylene group, wherein the open end of the alkylene group allows the aralkyl radical to bond to another part of the compound of Formula I. The alkylene group is a bivalent, straight-chain or branched, saturated hydrocarbon group. As used herein, the term “C7-12 aralkyl” means an aralkyl radical wherein the total number of carbon atoms in the aryl ring and the alkylene group combined is 7 to 12. Examples of “aralkyl” include, but not limited to, a phenyl ring substituted by a C1-6 alkylene group, e.g., benzyl and phenylethyl, and a naphthyl group substituted by a C1-2 alkylene group.
The term “heteroaryl” (or “heteroaromatic” or “heteroaryl group” or “aromatic heterocycle”) used alone or as part of a larger moiety as in “heteroaralkyl” or “heteroarylalkoxy” refers to a ring system wherein at least one ring in the system is aromatic and contains one or more heteroatoms, wherein each ring in the system contains 3 to 7 ring members and which has a single point of attachment to the rest of the molecule. Unless otherwise specified, a heteroaryl ring system may be monocyclic, bicyclic or tricyclic and have a total of five to fourteen ring members. In one embodiment, all rings in a heteroaryl system are aromatic. Also included in this definition are heteroaryl radicals where the heteroaryl ring is fused with one or more aromatic or non-aromatic carbocyclic or heterocyclic rings, or combinations thereof, as long as the radical or point of attachment is in the heteroaryl ring. Bicyclic 6, 5 heteroaromatic system, as used herein, for example, is a six membered heteroaromatic ring fused to a second five membered ring wherein the radical or point of attachment is on the six-membered ring.
Heteroaryl rings include, but are not limited to the following monocycles: 2-furanyl, 3-furanyl, N-imidazolyl, 2-imidazolyl, 4-imidazolyl, 5-imidazolyl, 3-isoxazolyl, 4-isoxazolyl, 5-isoxazolyl, 2-oxazolyl, 4-oxazolyl, 5-oxazolyl, N-pyrrolyl, 2-pyrrolyl, 3-pyrrolyl, 2-pyridyl, 3-pyridyl, 4-pyridyl, 2-pyrimidinyl, 4-pyrimidinyl, 5-pyrimidinyl, pyridazinyl (e.g., 3-pyridazinyl), 2-thiazolyl, 4-thiazolyl, 5-thiazolyl, tetrazolyl (e.g., 5-tetrazolyl), triazolyl (e.g., 2-triazolyl and 5-triazolyl), 2-thienyl, 3-thienyl, pyrazolyl (e.g., 2-pyrazolyl), isothiazolyl, 1,2,3-oxadiazolyl, 1,2,5-oxadiazolyl, 1,2,4-oxadiazolyl, 1,2,3-triazolyl, 1,2,3-thiadiazolyl, 1,3,4-thiadiazolyl, 1,2,5-thiadiazolyl, pyrazinyl, 1,3,5-triazinyl, and the following bicycles: benzimidazolyl, benzofuryl, benzothiophenyl, benzopyrazinyl, benzopyranonyl, indolyl (e.g., 2-indolyl), purinyl, quinolinyl (e.g., 2-quinolinyl, 3-quinolinyl, 4-quinolinyl), and isoquinolinyl (e.g., 1-isoquinolinyl, 3-isoquinolinyl, or 4-isoquinolinyl).
As used herein, “cyclo” (or “cyclic”, or “cyclic moiety”) encompasses mono-, bi- and tri-cyclic ring systems including cycloaliphatic, heterocyclic, aryl or heteroaryl, each of which has been previously defined.
“Fused” bicyclic ring systems comprise two rings which share two adjoining ring atoms.
“Bridged” bicyclic ring systems comprise two rings which share three or four adjacent ring atoms. As used herein, the term “bridge” refers to an atom or a chain of atoms connecting two different parts of a molecule. The two atoms that are connected through the bridge (usually but not always, two tertiary carbon atoms) are referred to as “bridgeheads”. In addition to the bridge, the two bridgeheads are connected by at least two individual atoms or chains of atoms. Examples of bridged bicyclic ring systems include, but are not limited to, adamantanyl, norbornanyl, bicyclo[3.2.1]octyl, bicyclo[2.2.2]octyl, bicyclo[3.3.1]nonyl, bicyclo[3.2.3]nonyl, 2-oxa-bicyclo[2.2.2]octyl, 1-aza-bicyclo[2.2.2]octyl, 3-aza-bicyclo[3.2.1]octyl, and 2,6-dioxa-tricyclo[3.3.1.03,7]nonyl. “Spiro” bicyclic ring systems share only one ring atom (usually a quaternary carbon atom) between the two rings.
The term “ring atom” refers to an atom such as C, N, O or S that is part of the ring of an aromatic ring, a cycloaliphatic ring, a heterocyclic or a heteroaryl ring. A “substitutable ring atom” is a ring carbon or nitrogen atom bonded to at least one hydrogen atom. The hydrogen can be optionally replaced with a suitable substituent group. Thus, the term “substitutable ring atom” does not include ring nitrogen or carbon atoms which are shared when two rings are fused. In addition, “substitutable ring atom” does not include ring carbon or nitrogen atoms when the structure depicts that they are already attached to one or more moiety other than hydrogen and no hydrogens are available for substitution.
“Heteroatom” refers to one or more of oxygen, sulfur, nitrogen, phosphorus, or silicon, including any oxidized form of nitrogen, sulfur, phosphorus, or silicon, the quaternized form of any basic nitrogen, or a substitutable nitrogen of a heterocyclic or heteroaryl ring, for example N (as in 3,4-dihydro-2H-pyrrolyl), NH (as in pyrrolidinyl) or NR+ (as in N-substituted pyrrolidinyl).
In some embodiments, two independent occurrences of a variable may be taken together with the atom(s) to which each variable is bound to form a 5-8-membered, heterocyclyl, aryl, or heteroaryl ring or a 3-8-membered cycloaliphatic ring. Exemplary rings that are formed when two independent occurrences of a substituent are taken together with the atom(s) to which each variable is bound include, but are not limited to the following: a) two independent occurrences of a substituent that are bound to the same atom and are taken together with that atom to form a ring, where both occurrences of the substituent are taken together with the atom to which they are bound to form a heterocyclyl, heteroaryl, cycloaliphatic or aryl ring, wherein the group is attached to the rest of the molecule by a single point of attachment; and b) two independent occurrences of a substituent that are bound to different atoms and are taken together with both of those atoms to form a heterocyclyl, heteroaryl, cycloaliphatic or aryl ring, wherein the ring that is formed has two points of attachment with the rest of the molecule. For example, where a phenyl group is substituted with two occurrences of —ORo as in Formula D1:




these two occurrences of —ORo are taken together with the carbon atoms to which they are bound to form a fused 6-membered oxygen containing ring as in Formula D2:




It will be appreciated that a variety of other rings can be formed when two independent occurrences of a substituent are taken together with the atom(s) to which each substituent is bound and that the examples detailed above are not intended to be limiting.
In some embodiments, an alkyl or aliphatic chain can be optionally interrupted with another atom or group. This means that a methylene unit of the alkyl or aliphatic chain can optionally be replaced with said other atom or group. Unless otherwise specified, the optional replacements form a chemically stable compound. Optional interruptions can occur both within the chain and/or at either end of the chain; i.e. both at the point of attachment(s) to the rest of the molecule and/or at the terminal end. Two optional replacements can also be adjacent to each other within a chain so long as it results in a chemically stable compound. Unless otherwise specified, if the replacement or interruption occurs at a terminal end of the chain, the replacement atom is bound to an H on the terminal end. For example, if —CH2CH2CH3 were optionally interrupted with —O—, the resulting compound could be —OCH2CH3, —CH2OCH3, or —CH2CH2OH. In another example, if the divalent linker —CH2CH2CH2— were optionally interrupted with —O—, the resulting compound could be —OCH2CH2—, —CH2OCH2—, or —CH2CH2O—. The optional replacements can also completely replace all of the carbon atoms in a chain. For example, a C3 aliphatic can be optionally replaced by —N(R′)—, —C(O)—, and —N(R′)— to form —N(R′)C(O)N(R′)— (a urea).
In general, the term “vicinal” refers to the placement of substituents on a group that includes two or more carbon atoms, wherein the substituents are attached to adjacent carbon atoms.
In general, the term “geminal” refers to the placement of substituents on a group that includes two or more carbon atoms, wherein the substituents are attached to the same carbon atom.
The terms “terminally” and “internally” refer to the location of a group within a substituent. A group is terminal when the group is present at the end of the substituent not further bonded to the rest of the chemical structure. Carboxyalkyl, i.e., RXO(O)C-alkyl is an example of a carboxy group used terminally. A group is internal when the group is present in the middle of a substituent at the end of the substituent bound to the rest of the chemical structure. Alkylcarboxy (e.g., alkyl-C(O)O— or alkyl-O(CO)—) and alkylcarboxyaryl (e.g., alkyl-C(O)O-aryl- or alkyl-O(CO)-aryl-) are examples of carboxy groups used internally.
As described herein, a bond drawn from a substituent to the center of one ring within a multiple-ring system (as shown below), represents substitution of the substituent at any substitutable position in any of the rings within the multiple ring system. For example, formula D3 represents possible substitution in any of the positions shown in formula D4:




This also applies to multiple ring systems fused to optional ring systems (which would be represented by dotted lines). For example, in Formula D5, X is an optional substituent both for ring A and ring B.




If, however, two rings in a multiple ring system each have different substituents drawn from the center of each ring, then, unless otherwise specified, each substituent only represents substitution on the ring to which it is attached. For example, in Formula D6, Y is an optional substituent for ring A only, and X is an optional substituent for ring B only.




As used herein, the terms “alkoxy” or “alkylthio” refer to an alkyl group, as previously defined, attached to the molecule, or to another chain or ring, through an oxygen (“alkoxy” i.e., —O-alkyl) or a sulfur (“alkylthio” i.e., —S-alkyl) atom.
The terms Cn-m “alkoxyalkyl”, Cn-m “alkoxyalkenyl”, Cn-m “alkoxyaliphatic”, and Cn-m “alkoxyalkoxy” mean alkyl, alkenyl, aliphatic or alkoxy, as the case may be, substituted with one or more alkoxy groups, wherein the combined total number of carbons of the alkyl and alkoxy groups, alkenyl and alkoxy groups, aliphatic and alkoxy groups or alkoxy and alkoxy groups, combined, as the case may be, is between the values of n and m. For example, a C4-6 alkoxyalkyl has a total of 4-6 carbons divided between the alkyl and alkoxy portion; e.g. it can be —CH2OCH2CH2CH3, —CH2CH2OCH2CH3 or —CH2CH2CH2OCH3.
When the moieties described in the preceding paragraph are optionally substituted, they can be substituted in either or both of the portions on either side of the oxygen or sulfur. For example, an optionally substituted C4 alkoxyalkyl could be, for instance, —CH2CH2OCH2(Me)CH3 or —CH2(OH)O CH2CH2CH3; a C5 alkoxyalkenyl could be, for instance, —CH═CHO CH2CH2CH3 or —CH═CHCH2OCH2CH3.
The terms aryloxy, arylthio, benzyloxy or benzylthio, refer to an aryl or benzyl group attached to the molecule, or to another chain or ring, through an oxygen (“aryloxy”, benzyloxy e.g., —O-Ph, —OCH2Ph) or sulfur (“arylthio” e.g., —S-Ph, —S—CH2Ph) atom. Further, the terms “aryloxyalkyl”, “benzyloxyalkyl” “aryloxyalkenyl” and “aryloxyaliphatic” mean alkyl, alkenyl or aliphatic, as the case may be, substituted with one or more aryloxy or benzyloxy groups, as the case may be. In this case, the number of atoms for each aryl, aryloxy, alkyl, alkenyl or aliphatic will be indicated separately. Thus, a 5-6-membered aryloxy(C1-4alkyl) is a 5-6 membered aryl ring, attached via an oxygen atom to a C1-4 alkyl chain which, in turn, is attached to the rest of the molecule via the terminal carbon of the C1-4 alkyl chain.
As used herein, the terms “halogen” or “halo” mean F, Cl, Br, or I.
The terms “haloalkyl”, “haloalkenyl”, “haloaliphatic”, and “haloalkoxy” mean alkyl, alkenyl, aliphatic or alkoxy, as the case may be, substituted with one or more halogen atoms. For example a C1-3 haloalkyl could be —CFHCH2CHF2 and a C1-2 haloalkoxy could be —OC(Br)HCHF2. This term includes perfluorinated alkyl groups, such as —CF3 and —CF2CF3.
As used herein, the term “cyano” refers to —CN or —C≡N.
The terms “cyanoalkyl”, “cyanoalkenyl”, “cyanoaliphatic”, and “cyanoalkoxy” mean alkyl, alkenyl, aliphatic or alkoxy, as the case may be, substituted with one or more cyano groups. For example a C1-3 cyanoalkyl could be —C(CN)2CH2CH3 and a C1-2 cyanoalkenyl could be ═CHC(CN)H2.
As used herein, an “amino” group refers to —NH2.
The terms “aminoalkyl”, “aminoalkenyl”, “aminoaliphatic”, and “aminoalkoxy” mean alkyl, alkenyl, aliphatic or alkoxy, as the case may be, substituted with one or more amino groups. For example a C1-3 aminoalkyl could be —CH(NH2)CH2CH2NH2 and a C1-2 aminoalkoxy could be —OCH2CH2NH2.
The term “hydroxyl” or “hydroxy” refers to —OH.
The terms “hydroxyalkyl”, “hydroxyalkenyl”, “hydroxyaliphatic”, and “hydroxyalkoxy” mean alkyl, alkenyl, aliphatic or alkoxy, as the case may be, substituted with one or more —OH groups. For example a C1-3 hydroxyalkyl could be —CH2(CH2OH)CH3 and a C4 hydroxyalkoxy could be —OCH2C(CH3)(OH)CH3.
As used herein, a “carbonyl”, used alone or in connection with another group refers to —C(O)— or —C(O)H. For example, as used herein, an “alkoxycarbonyl,” refers to a group such as —C(O)O(alkyl).
As used herein, an “oxo” refers to ═O, wherein oxo is usually, but not always, attached to a carbon atom (e.g., it can also be attached to a sulfur atom). An aliphatic chain can be optionally interrupted by a carbonyl group or can optionally be substituted by an oxo group, and both expressions refer to the same: e.g. —CH2—C(O)—CH3.
As used herein, in the context of resin chemistry (e.g. using solid resins or soluble resins or beads), the term “linker” refers to a bifunctional chemical moiety attaching a compound to a solid support or soluble support.
In all other situations, a “linker”, as used herein, refers to a divalent group in which the two free valences are on different atoms (e.g. carbon or heteroatom) or are on the same atom but can be substituted by two different substituents. For example, a methylene group can be C1 alkyl linker (—CH2—) which can be substituted by two different groups, one for each of the free valences (e.g. as in Ph-CH2-Ph, wherein methylene acts as a linker between two phenyl rings). Ethylene can be C2 alkyl linker (—CH2CH2—) wherein the two free valences are on different atoms. The amide group, for example, can act as a linker when placed in an internal position of a chain (e.g. —CONH—). A linker can be the result of interrupting an aliphatic chain by certain functional groups or of replacing methylene units on said chain by said functional groups. E.g. a linker can be a C1-6 aliphatic chain in which up to two methylene units are substituted by —C(O)— or —NH— (as in —CH2—NH—CH2—C(O)—CH2— or —CH2—NH—C(O)—CH2—). An alternative way to define the same —CH2—NH—CH2—C(O)—CH2— and —CH2—NH—C(O)—CH2— groups is as a C3 alkyl chain optionally interrupted by up to two —C(O)— or —NH— moieties. Cyclic groups can also form linkers: e.g. a 1,6-cyclohexanediyl can be a linker between two R groups, as in




A linker can additionally be optionally substituted in any portion or position.

Divalent groups of the type R—CH═ or R2C═, wherein both free valences are in the same atom and are attached to the same substituent, are also possible. In this case, they will be referred to by their IUPAC accepted names. For instance an alkylidene (such as, for example, a methylidene (═CH2) or an ethylidene (═CH—CH3)) would not be encompassed by the definition of a linker in this disclosure.
The term “protecting group”, as used herein, refers to an agent used to temporarily block one or more desired reactive sites in a multifunctional compound. In certain embodiments, a protecting group has one or more, or preferably all, of the following characteristics: a) reacts selectively in good yield to give a protected substrate that is stable to the reactions occurring at one or more of the other reactive sites; and b) is selectively removable in good yield by reagents that do not attack the regenerated functional group. Exemplary protecting groups are detailed in Greene, T. W. et al., “Protective Groups in Organic Synthesis”, Third Edition, John Wiley & Sons, New York: 1999, the entire contents of which is hereby incorporated by reference. The term “nitrogen protecting group”, as used herein, refers to an agents used to temporarily block one or more desired nitrogen reactive sites in a multifunctional compound. Preferred nitrogen protecting groups also possess the characteristics exemplified above, and certain exemplary nitrogen protecting groups are detailed in Chapter 7 in Greene, T. W., Wuts, P. G in “Protective Groups in Organic Synthesis”, Third Edition, John Wiley & Sons, New York: 1999, the entire contents of which are hereby incorporated by reference.
As used herein, the term “displaceable moiety” or “leaving group” refers to a group that is associated with an aliphatic or aromatic group as defined herein and is subject to being displaced by nucleophilic attack by a nucleophile.
As used herein, “amide coupling agent” or “amide coupling reagent” means a compound that reacts with the hydroxyl moiety of a carboxy moiety thereby rendering it susceptible to nucleophilic attack. Exemplary amide coupling agents include DIC (diisopropylcarbodiimide), EDCI (1-ethyl-3-(3-dimethylaminopropyl)carbodiimide), DCC (dicyclohexylcarbodiimide), BOP (benzotriazol-1-yloxy-tris(dimethylamino)-phosphonium hexafluorophosphate), pyBOP ((benzotriazol-1-yloxy)tripyrrolidinophosphonium hexafluorophosphate), etc.
The compounds of the invention are defined herein by their chemical structures and/or chemical names. Where a compound is referred to by both a chemical structure and a chemical name, and the chemical structure and chemical name conflict, the chemical structure is determinative of the compound's identity.
Compound Embodiments
The present invention is directed to compounds of Formula I, or pharmaceutically acceptable salts thereof,




wherein:

    ring B is a 5-membered heteroaryl ring selected from furan or thiophene;
    n is an integer selected from 0 to 3;
    each JB is independently selected from halogen, —CN, a C1-6 aliphatic, —ORB or a C3-8 cycloaliphatic group; wherein each said C1-6 aliphatic and each said C3-8 cycloaliphatic group is optionally and independently substituted with up to 3 instances of R3;
    each RB is independently selected from hydrogen, a C1-6 aliphatic or a C3-8 cycloaliphatic ring; wherein each said C1-6 aliphatic and each said C3-8 cycloaliphatic ring is optionally and independently substituted with up to 3 instances of R3a;
    each R3 is independently selected from halogen, —CN, C1-4 alkyl, C1-4 haloalkyl, —O(C1-4 alkyl) or —O(C1-4 haloalkyl);
    each R3a is independently selected from halogen, —CN, C1-4 alkyl, C1-4 haloalkyl, —O(C1-4 alkyl) or —O(C1-4 haloalkyl);
    X is selected from N, C-JD or C—H;
    o is an integer selected from 0 to 3;
    each JD is independently selected from halogen, —NO2, —ORD, —SRD, —C(O)RD, —C(O)ORD, —C(O)N(RD)2, —CN, —N(RD)2, —N(Rd)C(O)RD, —N(Rd)C(O)ORD, —SO2RD, —SO2N(RD)2, —N(Rd)SO2RD, a C1-6 aliphatic, —(C1-6 aliphatic)-RD, a C3-8 cycloaliphatic ring, a 6 to 10-membered aryl ring, a 4 to 8-membered heterocyclic ring or a 5 to 10-membered heteroaryl ring; wherein each said 4 to 8-membered heterocylic ring and each said 5 to 10-membered heteroaryl ring contains between 1 and 3 heteroatoms independently selected from O, N or S; and wherein each said C1-6 aliphatic, each said C3-8 cycloaliphatic ring, each said 6 to 10-membered aryl ring, each said 4 to 8-membered heterocyclic ring and each said 5 to 10-membered heteroaryl ring is optionally and independently substituted with up to 3 instances of R5;
    each RD is independently selected from hydrogen, a C1-6 aliphatic, —(C1-6 aliphatic)-Rf, a C3-8 cycloaliphatic ring, a 4 to 8-membered heterocyclic ring, phenyl or a 5 to 6-membered heteroaryl ring; wherein each said 4 to 8-membered heterocylic ring and each said 5 to 6-membered heteroaryl ring contains between 1 and 3 heteroatoms independently selected from O, N or S; and wherein each said C1-6 aliphatic, each said C3-8 cycloaliphatic ring, each said 4 to 8-membered heterocyclic ring, each said phenyl and each said 5 to 6-membered heteroaryl ring is optionally and independently substituted with up to 3 instances of Rya;
    each Rd is independently selected from hydrogen, a C1-6 aliphatic, —(C1-6 aliphatic)-Rf, a C3-8 cycloaliphatic ring, a 4 to 8-membered heterocyclic ring, phenyl or a 5 to 6-membered heteroaryl ring; wherein each said heterocylic ring and each said heteroaryl ring contains between 1 and 3 heteroatoms independently selected from O, N or S; and wherein each said C1-6 aliphatic, each said C3-8 cycloaliphatic ring, each said 4 to 8-membered heterocyclic ring, each said phenyl and each said 5 to 6-membered heteroaryl ring is optionally and independently substituted by up to 3 instances of R5b;
    each Rf is independently selected from a C3-8 cycloaliphatic ring, a 4 to 8-membered heterocyclic ring, phenyl or a 5 to 6-membered heteroaryl ring; wherein each said heterocylic ring and each said heteroaryl ring contains between 1 and 3 heteroatoms independently selected from O, N or S; and wherein each said C1-6 aliphatic, each said C3-8 cycloaliphatic ring, each said 4 to 8-membered heterocyclic ring, each said phenyl and each said 5 to 6-membered heteroaryl ring is optionally and independently substituted by up to 3 instances of R5c;
    when JD is —C(O)N(RD)2, N(RD)2 or —SO2N(RD)2, the two instances of RD together with the nitrogen atom attached to the RD, alternatively form a 4 to 8-membered heterocyclic ring or a 5-membered heteroaryl ring; wherein each said 4 to 8-membered heterocyclic ring and each said 5-membered heteroaryl ring optionally contains up to 2 additional heteroatoms independently selected from N, O or S, and wherein each said 4 to 8-membered heterocyclic ring and each said 5-membered heteroaryl ring is optionally and independently substituted by up to 3 instances of R5; or
    when JD is —N(Rd)C(O)RD, the RD group together with the carbon atom attached to the RD group, with the nitrogen atom attached to the Rd group and with the Rd group alternatively form a 4 to 8-membered heterocyclic ring or a 5-membered heteroaryl ring; wherein each said 4 to 8-membered heterocyclic ring and each said 5-membered heteroaryl ring optionally contains up to 2 additional heteroatoms independently selected from N, O or S, and wherein each said 4 to 8-membered heterocyclic ring and each said 5-membered heteroaryl ring is optionally and independently substituted by up to 3 instances of R5;
    when JD is —N(Rd)C(O)ORD, the RD group together with the oxygen atom attached to the RD group, with the carbon atom of the —C(O)— portion of the —N(Rd)C(O)ORD group, with the nitrogen atom attached to the Rd group, and with the Rd group alternatively form a 4 to 8-membered heterocyclic ring or a 5-membered heteroaryl ring; wherein each said 4 to 8-membered heterocyclic ring and each said 5-membered heteroaryl ring optionally contains up to 2 additional heteroatoms independently selected from N, O or S, and wherein each said 4 to 8-membered heterocyclic ring and each said 5-membered heteroaryl ring is optionally and independently substituted by up to 3 instances of R5;
    when JD is —N(Rd)SO2RD, the RD group together with the oxygen atom attached to the RD group, with the sulfur atom attached to said oxygen atom in the —SO2RD portion of the —N(Rd)SO2RD group, with the nitrogen atom attached to the Rd group, and with the Rd group alternatively form a 4 to 8-membered heterocyclic ring or a 5-membered heteroaryl ring; wherein each said 4 to 8-membered heterocyclic ring and each said 5-membered heteroaryl ring optionally contains up to 2 additional heteroatoms independently selected from N, O or S, and wherein each said 4 to 8-membered heterocyclic ring and each said 5-membered heteroaryl ring is optionally and independently substituted by up to 3 instances of R5;
    each R5 is independently selected from halogen, —CN, —NO2, C1-4 alkyl, a C7-12 aralkyl, C3-8 cycloalkyl ring, C1-4 haloalkyl, C1-4 cyanoalkyl, —OR6, —SR6, —OCOR6, —COR6, —C(O) OR6, —C(O)N(R6)2, —N(R6)C(O)R6, —N(R6)2, —SO2R6, —SO2N(R6)2, —N(R6)SO2R6, phenyl or an oxo group; wherein each said phenyl group is optionally and independently substituted with up to 3 instances of halogen, —OH, —NH2, —NH(C1-4 alkyl), —N(C1-4 alkyl)2, —NO2, —CN, C1-4 alkyl, C1-4 haloalkyl, —O(C1-4 alkyl) or —O(C1-4 haloalkyl); and wherein each said C7-12 aralkyl and each said cycloalkyl group is optionally and independently substituted with up to 3 instances of halogen;
    each R5a is independently selected from halogen, —CN, —NO2, C1-4 alkyl, a C7-12 aralkyl, C3-8 cycloalkyl ring, C1-4 haloalkyl, C1-4 cyanoalkyl, —OR6, —SR6, —OCOR6, —COR6, —C(O)OR6, —C(O)N(R6)2, —N(R6)C(O)R6, —N(R6)2, —SO2R6, —SO2N(R6)2, —N(R6)SO2R6, phenyl or an oxo group; wherein each said phenyl group is optionally and independently substituted with up to 3 instances of halogen, —OH, —NH2, —NH(C1-4 alkyl), —N(C1-4 alkyl)2, —NO2, —CN, C1-4 alkyl, C1-4 haloalkyl, —O(C1-4 alkyl) or —O(C1-4 haloalkyl); and wherein each said C7-12 aralkyl and each said cycloalkyl group is optionally and independently substituted with up to 3 instances of halogen;
    each R5b is independently selected from halogen, —CN, —NO2, C1-4 alkyl, a C7-12 aralkyl, C3-8 cycloalkyl ring, C1-4 haloalkyl, C1-4 cyanoalkyl, —OR6, —SR6, —OCOR6, —COR6, —C(O)OR6, —C(O)N(R6)2, —N(R6)C(O)R6, —N(R6)2, —SO2R6, —SO2N(R6)2, —N(R6)SO2R6, phenyl or an oxo group; wherein each said phenyl group is optionally and independently substituted with up to 3 instances of halogen, —OH, —NH2, —NH(C1-4 alkyl), —N(C1-4 alkyl)2, —NO2, —CN, C1-4 alkyl, C1-4 haloalkyl, —O(C1-4 alkyl) or —O(C1-4 haloalkyl); and wherein each said C7-12 aralkyl and each said cycloalkyl group is optionally and independently substituted with up to 3 instances of halogen;
    each R5c is independently selected from halogen, —CN, —NO2, C1-4 alkyl, a C7-12 aralkyl, C3-8 cycloalkyl ring, C1-4 haloalkyl, C1-4 cyanoalkyl, —OR6, —SR6, —OCOR6, —COR6, —C(O)OR6, —C(O)N(R6)2, —N(R6)C(O)R6, —N(R6)2, —SO2R6, —SO2N(R6)2, —N(R6)SO2R6, phenyl or an oxo group; wherein each said phenyl group is optionally and independently substituted with up to 3 instances of halogen, —OH, —NH2, —NH(C1-4 alkyl), —N(C1-4 alkyl)2, —NO2, —CN, C1-4 alkyl, C1-4 haloalkyl, —O(C1-4 alkyl) or —O(C1-4 haloalkyl); and wherein each said C7-12 aralkyl and each said cycloalkyl group is optionally and independently substituted with up to 3 instances of halogen;
    each R6 is independently selected from hydrogen, a C1-4 alkyl, a C2-4 alkenyl, phenyl, a C7-12 aralkyl or a C3-8 cycloalkyl ring; wherein each said C1-4 alkyl, each said C2-4 alkenyl, each said phenyl, each said C7-12 aralkyl and each said C3-8 cycloalkyl group is optionally and independently substituted with up to 3 instances of halogen;
    alternatively, two instances of R6 linked to the same nitrogen atom of R5, together with said nitrogen atom of R5, form a 5 to 8-membered heterocyclic ring or a 5-membered heteroaryl ring; wherein each said 5 to 8-membered heterocyclic ring and each said 5-membered heteroaryl ring optionally contains up to 2 additional heteroatoms independently selected from N, O or S; or
    alternatively, one instance of R6 linked to a nitrogen atom of R5 and one instance of R6 linked to a carbon or sulfur atom of the same R5, together with said nitrogen and said carbon or sulfur atom of the same R5, form a 5 to 8-membered heterocyclic ring or a 5-membered heteroaryl ring; wherein each said 5 to 8-membered heterocyclic ring and each said 5-membered heteroaryl ring optionally contains up to 2 additional heteroatoms independently selected from N, O or S;
    or, alternatively, two JD groups attached to two vicinal ring D atoms, taken together with said two vicinal ring D atoms, form a 5 to 7-membered heterocycle resulting in a fused ring D wherein said 5 to 7-membered heterocycle contains from 1 to 3 heteroatoms independently selected from N, O or S; and wherein said 5 to 7-membered heterocycle is optionally and independently substituted by up to 3 instances of halogen, —OH, —NH2, —NH(C1-4 alkyl), —N(C1-4 alkyl)2, —CN, C1-4 alkyl, C1-4 haloalkyl, —O(C1-4 alkyl), —O(C1-4 haloalkyl), oxo or phenyl; wherein said phenyl is optionally and independently substituted by up to three instances of halogen, —OH, —NH2, —NH(C1-4 alkyl), —N(C1-4 alkyl)2, —NO2, —CN, C1-4 alkyl, C1-4 haloalkyl, —O(C1-4 alkyl) or —O(C1-4 haloalkyl);
    RC is a ring C; ring C is a phenyl ring, a monocyclic 5 or 6-membered heteroaryl ring, a bicyclic 8 to 10-membered heteroaryl ring, a monocyclic 3 to 10-membered cycloaliphatic ring, or a monocyclic 4 to 10-membered heterocycle; wherein said monocyclic 5 or 6-membered heteroaryl ring, said bicyclic 8 to 10-membered heteroaryl ring, or said monocyclic 4 to 10-membered heterocycle contain between 1 and 4 heteroatoms selected from N, O or S; wherein said monocyclic 5 or 6-membered heteroaryl ring is not a 1,3,5-triazinyl ring; and wherein said phenyl, monocyclic 5 to 6-membered heteroaryl ring, bicyclic 8 to 10-membered heteroaryl ring, or monocyclic 4 to 10-membered heterocycle is optionally and independently substituted with up to 3 instances of JC;
    each JC is independently selected from halogen, —CN, —NO2, a C1-6 aliphatic, —ORH, —SRH, —N(RH)2, a C3-8 cycloaliphatic ring or a 4 to 8-membered heterocyclic ring; wherein said 4 to 8-membered heterocyclic ring contains 1 or 2 heteroatoms independently selected from N, O or S; wherein each said C1-6 aliphatic, each said C3-8 cycloaliphatic ring and each said 4 to 8-membered heterocyclic ring, is optionally and independently substituted with up to 3 instances of R7; or alternatively, two JC groups attached to two vicinal ring C atoms, taken together with said two vicinal ring C atoms, form a 5 to 7-membered heterocycle resulting in a fused ring C; wherein said 5 to 7-membered heterocycle contains from 1 to 2 heteroatoms independently selected from N, O or S;
    each RH is independently selected from hydrogen, a C1-6 aliphatic, a C3-8 cycloaliphatic ring or a 4 to 8-membered heterocyclic ring; wherein each said 4 to 8-membered heterocylic ring contains between 1 and 3 heteroatoms independently selected from O, N or S; and wherein each said C1-6 aliphatic, each said C3-8 cycloaliphatic ring, each said 4 to 8-membered heterocyclic ring, is optionally and independently substituted with up to 3 instances of R7a;
    alternatively, two instances of RH linked to the same nitrogen atom of JC, together with said nitrogen atom of JC, form a 4 to 8-membered heterocyclic ring or a 5-membered heteroaryl ring; wherein each said 4 to 8-membered heterocyclic ring and each said 5-membered heteroaryl ring optionally contains up to 2 additional heteroatoms independently selected from N, O or S, and wherein each said 4 to 8-membered heterocyclic ring and each said 5-membered heteroaryl ring is optionally and independently substituted by up to 3 instances of R7b; or
    each R7 is independently selected from halogen, —CN, —NO2, C1-4 alkyl, C1-4 haloalkyl, C3-8 cycloalkyl ring, —OR8, —SR8, —N(R8)2, or an oxo group; wherein each said cycloalkyl group is optionally and independently substituted with up to 3 instances of halogen;
    each R7a is independently selected from halogen, —CN, —NO2, C1-4 alkyl, C1-4 haloalkyl, C3-8 cycloalkyl ring, —OR8, —SR8, —N(R8)2, or an oxo group; wherein each said cycloalkyl group is optionally and independently substituted with up to 3 instances of halogen;
    each R7b is independently selected from halogen, —CN, —NO2, C1-4 alkyl, C1-4 haloalkyl, C3-8 cycloalkyl ring, —OR8, —SR8, —N(R8)2, or an oxo group; wherein each said cycloalkyl group is optionally and independently substituted with up to 3 instances of halogen;
    each R8 is independently selected from hydrogen, a C1-4 alkyl, C1-4 haloalkyl or a C3-8 cycloalkyl ring; wherein each said cycloalkyl group is optionally and independently substituted with up to 3 instances of halogen;
    alternatively, two instances of R8 linked to the same nitrogen atom of R7, together with said nitrogen atom of R7, form a 5 to 8-membered heterocyclic ring or a 5-membered heteroaryl ring; wherein each said 5 to 8-membered heterocyclic ring and each said 5-membered heteroaryl ring optionally contains up to 2 additional heteroatoms independently selected from N, O or S; and
    RA is selected from hydrogen, halogen, C1-4 alkyl or C1-4 haloalkyl.


In some embodiments of Formula I, ring B is thiophene. In some embodiments, said thiophene ring is a 3-thiophenyl ring. In other embodiments it is a 2-thiophenyl ring. In some embodiments, said thiophene ring is unsubstituted and n=0. In other embodiments, said thiophene is substituted and n is an integer selected from 1, 2 or 3.
In some embodiments of Formula I wherein ring B is substituted thiophene, each JB is independently selected from halogen, a C1-6 aliphatic or —ORB. In other embodiments, each JB is independently selected from a halogen atom. In some embodiments, when JB is independently selected from a halogen atom, each JB can be independently selected from fluoro or chloro, or each JB is fluoro. In other embodiments, each JB is independently selected from a C1-6 aliphatic. In some embodiments, each JB is methyl or ethyl. In other embodiments, each JB is methyl. In still other embodiments of Formula I, wherein ring B is substituted thiophene, each JB is independently selected from —ORB; wherein each RB is hydrogen or a C1-6 alkyl. In some embodiments, each RB is methyl, ethyl, propyl or isopropyl.
In some of the above embodiments, wherein ring B is substituted thiophene, n is 1 or 2 and each JB is independently selected from fluoro, chloro, methyl or methoxy. In other embodiments, ring B is a mono substituted thiophene and JB is fluoro.
In some of the embodiments of Formula I, wherein ring B is thiophene, unsubstituted or substituted, X is N so that ring D is pyrimidine, unsubstituted or substituted. Ring B can be 2-thiophenyl or 3-thiophenyl.
In some of the embodiments of Formula I, RC is 1,2-oxazole or 1,3-oxazole, unsubstituted or substituted.
In some of the embodiments of Formula I, wherein ring B is thiophene, unsubstituted or substituted, X is N so that ring D is pyrimidine, unsubstituted or substituted, and RC is 1,3-oxazole or 1,2-oxazole, unsubstituted or substituted.
In other embodiments of Formula I, ring B is a furan ring. In some embodiments, n=0 and the furan ring in unsubstituted. In other embodiments, ring B is a substituted furan ring and n is an integer selected from 1 and 2. In some of the above embodiments, wherein ring B is substituted furan, n is 1 or 2 and each JB is independently selected from fluoro, chloro, methyl or methoxy. In other embodiments, ring B is a mono substituted furan and JB is fluoro.
In some of the embodiments of Formula I, wherein ring B is furan, unsubstituted or substituted, X is C-JD or C—H, so that ring D is pyridine unsubstituted or substituted. Ring B can be 2-furanyl or 3-furanyl.
In some of the embodiments of Formula I, wherein ring B is furan, unsubstituted or substituted, X is C-JD or C—H, so that ring D is pyridine unsubstituted or substituted, and RC is 1,3-oxazole or 1,2-oxazole, unsubstituted or substituted.
In some embodiments of Formula I, X in ring D is C-JD or C—H. In other embodiments X in ring D is N.
In some embodiments of Formula I, ring D is unsubstituted and o is 0. In other embodiments of Formula I, o is an integer selected from 1 to 3.
In those embodiments of Formula I wherein ring D is substituted, each JD is independently selected from halogen, a C1-6 aliphatic, —N(RD)2, —N(Rd)C(O)RD, —N(Rd)C(O)ORD, N(Rd)C(O)N(RD)2, —SO2RD, —SO2N(RD)2, —N(Rd)SO2RD, —SRD, —ORD or an optionally substituted C3-8 cycloaliphatic ring. In some of the above embodiments, wherein ring D is substituted, o is 1. In other embodiments, o is 2. In other embodiments o is 3.
In some embodiments of Formula I, wherein ring D is substituted, o is 1, 2 or 3 and each JD is independently selected from methyl, chloro, fluoro, —N(RD)2, or —ORD; wherein each RD is independently selected from hydrogen or methyl. In other embodiments, o is 1 or 2 and each JD is independently selected from fluoro, hydroxyl or amino.
In some embodiments of Formula I, RC is a phenyl ring, a monocyclic 5 to or 6-membered heteroaryl ring, a monocyclic 3 to 10-membered cycloaliphatic ring or a monocyclic 4 to 10-membered heterocycle; each of them optionally and independently substituted by up to 6 instances of JC. In other embodiments of Formula I, ring C is a phenyl ring, a monocyclic 5 to 6-membered heteroaryl ring, a monocyclic 3 to 6-membered cycloaliphatic ring or a monocyclic 4 to 6-membered heterocycle; each of them optionally and independently substituted with up to 3 instances of JC.
In some embodiments of Formula I, RC is a monocyclic 3 to 6-membered cycloaliphatic ring, optionally and independently substituted with up to 2 instances of JC. In other embodiments, ring C is cyclopropyl, cyclobutyl, cyclopentyl or cyclohexyl. In other embodiments of Formula I, RC is a ring C which is a 4-membered cycloaliphatic ring substituted by 1 to 3 instances of JC, a 5-membered cycloaliphatic ring substituted by 1 to 4 instances of JC or a 6-membered cycloaliphatic ring substituted by 1 to 5 instances of JC; wherein each JC is independently selected from halogen or a C1-6 aliphatic.
In other embodiments of Formula I, RC is phenyl, optionally and independently substituted by up to 5 instances of JC. In some embodiments, ring C is phenyl and it is unsubstituted. In other embodiments, it is substituted by 1 to 3 instances of JC; wherein each JC is independently selected from halogen, a C1-6 aliphatic, —NH2, —CN or —O(C1-6 aliphatic). In other embodiments, each JC is independently selected from halogen, —NH2, —CN, C1-6 alkyl or —O(C1-4 alkyl). In still other embodiments, ring C is phenyl substituted by 1 to 2 instances of JC and each JC is selected from fluoro, chloro, methyl, —CN or —OCH3.
In still other embodiments of Formula I, RC is a 5 to 6-membered heteroaryl ring and is optionally and independently substituted by up to 5 instances of JC. In some embodiments, said 5 to 6-membered heteroaryl ring is unsubstituted. In other embodiments, it is substituted with 1 to 3 instances of JC. In some of these embodiments, the 5 to 6-membered heteroaryl ring can be selected from thienyl, thiazolyl, oxadiazolyl, oxazolyl, isooxazolyl, tetrazolyl, pyrrolyl, triazolyl, furanyl, pyridinyl, pyrimidinyl, pyrazinyl or pyridazinyl. In yet other embodiments, ring C is an isoxazole ring and it is unsubstituted.
In some embodiments of Formula I, ring C is a 5 to 6-membered heteroaryl ring and it is substituted by 1 to 5 instances of JC; wherein each JC is independently selected from halogen, a C1-6 aliphatic, —CN, —NH2 or —O(C1-6 aliphatic).
In some embodiments, the compounds of the invention are represented by structural Formula IIA or IIB:




wherein JB is selected from hydrogen or a halogen. In some embodiments the halogen is fluro.
In some embodiments of Formulae IIA and IIB, X in ring D is C—H. In other embodiments X in ring D is N.
In some embodiments of Formulae IIA and IIB, ring D is unsubstituted and o is 0. In other embodiments of Formulae IIA and IIB, o is an integer from 1 to 3.
In those embodiments of Formula IIA and IIB wherein ring D is substituted, each JD is independently selected from halogen, a C1-6 aliphatic, —N(RD)2, —ORD or an optionally substituted C3-8 cycloaliphatic ring. In other embodiments, n is 2 and each JD is independently selected from a halogen atom or —NH2 or —OH. In still other embodiments, n is 2 and one instance of JD is fluoro and the other one is —OH. In other embodiments, n is 1 and JD is —NH2.
In other embodiments of Formulae IIA and IIB, RC is phenyl, optionally and independently substituted by up to 5 instances of JC. In some embodiments, ring C is phenyl and it is unsubstituted. In other embodiments, it is substituted by 1 to 3 instances of JC; wherein each JC is independently selected from halogen, a C1-6 aliphatic, —NH2, —CN or —O(C1-6 aliphatic). In other embodiments, each JC is independently selected from halogen, —NH2, —CN, C1-6 alkyl or —O(C1-4 alkyl). In still other embodiments, ring C is phenyl substituted by 1 to 2 instances of JC and each JC is selected from fluoro, chloro, methyl, —CN or —OCH3.
In still other embodiments of Formulae HA and IIB, RC is a 5 to 6-membered heteroaryl ring and is optionally and independently substituted by up to 5 instances of JC. In some embodiments, said 5 to 6-membered heteroaryl ring is unsubstituted. In other embodiments, it is substituted with 1 to 3 instances of JC. In some of these embodiments, the 5 to 6-membered heteroaryl ring can be selected from thienyl, thiazolyl, oxadiazolyl, oxazolyl, isooxazolyl, tetrazolyl, pyrrolyl, triazolyl, furanyl, pyridinyl, pyrimidinyl, pyrazinyl or pyridazinyl. In other embodiments, the heteroaryl ring C is selected from isoxazolyl, furanyl, thienyl, thiazolyl, 1,3,4-oxadiazolyl, pyridinyl, pyrimidinyl or pyrazin-3-yl. In still other embodiments, the heteroaryl ring C is selected from isoxazolyl, thienyl, thiazolyl, 1,3,4-oxadiazolyl or pyridinyl. In other embodiments, ring C is a 5-6 membered heteroaryl and it is substituted by 1 or 2 instances of JC; wherein each JC is selected from fluoro, chloro, bromo, methyl, —CN, —NH2 or —OCH3. In yet other embodiments of Formula IIA and IIB, ring C is an isoxazole and it is unsubstituted.
The compounds of the invention are defined herein by their chemical structures and/or chemical names. Where a compound is referred to by both a chemical structure and a chemical name, and the chemical structure and chemical name conflict, the chemical structure is determinative of the compound's identity.
In some embodiments, compounds of Formula I are selected from those listed in Table 1.











TABLE 1









 




I-1



 








I-2



 








I-3



 








I-4



 








I-5










Methods of Preparing the Compounds

The compounds of Formula I may be prepared according to the schemes and examples depicted and described below. Unless otherwise specified, the starting materials and various intermediates may be obtained from commercial sources, prepared from commercially available compounds or prepared using well-known synthetic methods. Another aspect of the present invention is a process for preparing the compounds of Formula I as disclosed herein.
General synthetic procedures for the compounds of this invention are described below. The synthetic schemes are presented as examples and do not limit the scope of the invention in any way.
General Procedure A




Step 1: Dione Enolate Formation:
To a solution of ketone A in THF cooled to −78° C., LiHMDS (e.g., 0.9 eq, 1.0 M in toluene) is added dropwise via syringe. The reaction is then allowed to warm to 0° C., then charged with diethyl oxalate (1.2 eq). At this time, the reaction is warmed to room temperature and stirred at that temperature until judged complete (e.g., using either TLC or LC/MS analysis). Once the reaction is complete (reaction time was typically 45 minutes), the product dione enolate B is used as-is in Step 2, i.e., the cyclization step, without any further purification.
Step 2: Pyrazole Formation:
Dione enolate B is diluted with ethanol and consecutively charged with HCl (e.g., 3 eq, 1.25M solution in ethanol) and arylhydrazine hydrate (e.g., 1.15 eq). The reaction mixture is heated to 70° C. and stirred until cyclization is deemed complete (e.g., by LC/MS analysis, typically 30 minutes). Once complete, the reaction mixture is treated carefully with solid sodium bicarbonate (e.g., 4 eq) and diluted with dichloromethane and water. Layers are separated, and aqueous layer is further diluted with water before extraction with dichloromethane (3×). The combined organics are washed with brine, dried over MgSO4, filtered, and concentrated in vacuo. The resulting pyrazole C is then purified by SiO2 chromatography using an appropriate gradient of EtOAc in hexanes.
Step 3: Amidine Formation:
To a suspension of NH4Cl (e.g., 5 eq) in toluene cooled to 0° C. is added AlMe3 (e.g., 5 eq, 2.0M solution in toluene) dropwise via syringe. Reaction is allowed to warm to room temperature, and stirred until no more bubbling is observed. Pyrazole C is added in 1 portion to the reaction, heated to 110° C., and stirred at this temperature until judged complete (e.g., using either TLC or LC/MS analysis). Once complete, reaction is cooled, treated with excess methanol, and stirred vigorously for 1 hour at room temperature. The thick slurry is filtered, and the resulting solid cake is washed with methanol. The filtrate is concentrated in vacuo, and the resulting solids are re-suspended in an ethyl acetate:isopropyl alcohol=5:1 solvent mixture. The reaction is further treated with saturated sodium carbonate solution, and stirred for 10 minutes before the layers are separated. The aqueous layer is extracted with the ethyl acetate:isopropyl alcohol=5:1 solvent mixture (3×), and the combined organics are washed with brine. The organics are further dried over MgSO4, filtered, and the solvent is removed in vacuo. The product amidine D is used as-is in subsequent steps without further purification. See more details in the Example section.
Pharmaceutically Acceptable Salts of the Invention.
The phrase “pharmaceutically acceptable salt,” as used herein, refers to pharmaceutically acceptable organic or inorganic salts of a compound of Formula I. The pharmaceutically acceptable salts of a compound of Formula I are used in medicine. Salts that are not pharmaceutically acceptable may, however, be useful in the preparation of a compound of Formula I or of their pharmaceutically acceptable salts. A pharmaceutically acceptable salt may involve the inclusion of another molecule such as an acetate ion, a succinate ion or other counter ion. The counter ion may be any organic or inorganic moiety that stabilizes the charge on the parent compound. Furthermore, a pharmaceutically acceptable salt may have more than one charged atom in its structure. Instances where multiple charged atoms are part of the pharmaceutically acceptable salt can have multiple counter ions. Hence, a pharmaceutically acceptable salt can have one or more charged atoms and/or one or more counter ion.
Pharmaceutically acceptable salts of the compounds described herein include those derived from the compounds with inorganic acids, organic acids or bases. In some embodiments, the salts can be prepared in situ during the final isolation and purification of the compounds. In other embodiments the salts can be prepared from the free form of the compound in a separate synthetic step.
When a compound of Formula I is acidic or contains a sufficiently acidic bioisostere, suitable “pharmaceutically acceptable salts” refers to salts prepared form pharmaceutically acceptable non-toxic bases including inorganic bases and organic bases. Salts derived from inorganic bases include aluminum, ammonium, calcium, copper, ferric, ferrous, lithium, magnesium, manganic salts, manganous, potassium, sodium, zinc and the like. Particular embodiments include ammonium, calcium, magnesium, potassium and sodium salts. Salts derived from pharmaceutically acceptable organic non-toxic bases include salts of primary, secondary and tertiary amines, substituted amines including naturally occurring substituted amines, cyclic amines and basic ion exchange resins, such as arginine, betaine, caffeine, choline, N, N.sup.1-dibenzylethylenediamine, diethylamine, 2-diethylaminoethanol, 2-dimethylaminoethanol, ethanolamine, ethylenediamine, N-ethylmorpholine, N-ethylpiperidine, glucamine, glucosamine, histidine, hydrabamine, isopropylamine, lysine, methylglucamine, morpholine, piperazine, piperidine, polyamine resins, procaine, purines, theobromine, triethylamine, trimethylamine tripropylamine, tromethamine and the like.
When a compound of Formula I is basic or contains a sufficiently basic bioisostere, salts may be prepared from pharmaceutically acceptable non-toxic acids, including inorganic and organic acids. Such acids include acetic, benzenesulfonic, benzoic, camphorsulfonic, citric, ethanesulfonic, fumaric, gluconic, glutamic, hydrobromic, hydrochloric, isethionic, lactic, maleic, malic, mandelic, methanesulfonic, mucic, nitric, pamoic, pantothenic, phosphoric, succinic, sulfuric, tartaric, p-toluenesulfonic acid and the like. Particular embodiments include citric, hydrobromic, hydrochloric, maleic, phosphoric, sulfuric and tartaric acids. Other exemplary salts include, but are not limited, to sulfate, citrate, acetate, oxalate, chloride, bromide, iodide, nitrate, bisulfate, phosphate, acid phosphate, isonicotinate, lactate, salicylate, acid citrate, tartrate, oleate, tannate, pantothenate, bitartrate, ascorbate, succinate, maleate, gentisinate, fumarate, gluconate, glucuronate, saccharate, formate, benzoate, glutamate, methanesulfonate, ethanesulfonate, benzenesulfonate, p-toluenesulfonate, and pamoate (i.e., 1,1′-methylene-bis-(2-hydroxy-3-naphthoate)) salts.
The preparation of the pharmaceutically acceptable salts described above and other typical pharmaceutically acceptable salts is more fully described by Berg et al., “Pharmaceutical Salts,” J. Pharm. Sci., 1977:66:1-19, incorporated here by reference in its entirety.
In addition to the compounds described herein, their pharmaceutically acceptable salts may also be employed in compositions to treat or prevent the herein identified disorders.
Pharmaceutical Compositions and Methods of Administration.
The compounds herein disclosed, and their pharmaceutically acceptable salts thereof may be formulated as pharmaceutical compositions or “formulations”.
A typical formulation is prepared by mixing a compound of Formula I, or a pharmaceutically acceptable salt thereof, and a carrier, diluent or excipient. Suitable carriers, diluents and excipients are well known to those skilled in the art and include materials such as carbohydrates, waxes, water soluble and/or swellable polymers, hydrophilic or hydrophobic materials, gelatin, oils, solvents, water, and the like. The particular carrier, diluent or excipient used will depend upon the means and purpose for which a compound of Formula I is being formulated. Solvents are generally selected based on solvents recognized by persons skilled in the art as safe (GRAS-Generally Regarded as Safe) to be administered to a mammal. In general, safe solvents are non-toxic aqueous solvents such as water and other non-toxic solvents that are soluble or miscible in water. Suitable aqueous solvents include water, ethanol, propylene glycol, polyethylene glycols (e.g., PEG400, PEG300), etc. and mixtures thereof. The formulations may also include other types of excipients such as one or more buffers, stabilizing agents, antiadherents, surfactants, wetting agents, lubricating agents, emulsifiers, binders, suspending agents, disintegrants, fillers, sorbents, coatings (e.g. enteric or slow release) preservatives, antioxidants, opaquing agents, glidants, processing aids, colorants, sweeteners, perfuming agents, flavoring agents and other known additives to provide an elegant presentation of the drug (i.e., a compound of Formula I or pharmaceutical composition thereof) or aid in the manufacturing of the pharmaceutical product (i.e., medicament).
The formulations may be prepared using conventional dissolution and mixing procedures. For example, the bulk drug substance (i.e., a compound of Formula I, a pharmaceutically acceptable salt thereof, or a stabilized form of the compound, such as a complex with a cyclodextrin derivative or other known complexation agent) is dissolved in a suitable solvent in the presence of one or more of the excipients described above. A compound having the desired degree of purity is optionally mixed with pharmaceutically acceptable diluents, carriers, excipients or stabilizers, in the form of a lyophilized formulation, milled powder, or an aqueous solution. Formulation may be conducted by mixing at ambient temperature at the appropriate pH, and at the desired degree of purity, with physiologically acceptable carriers. The pH of the formulation depends mainly on the particular use and the concentration of compound, but may range from about 3 to about 8. When the agent described herein is a solid amorphous dispersion formed by a solvent process, additives may be added directly to the spray-drying solution when forming the mixture such as the additive is dissolved or suspended in the solution as a slurry which can then be spray dried. Alternatively, the additives may be added following spray-drying process to aid in the forming of the final formulated product.
The compound of Formula I or a pharmaceutically acceptable salt thereof is typically formulated into pharmaceutical dosage forms to provide an easily controllable dosage of the drug and to enable patient compliance with the prescribed regimen. Pharmaceutical formulations of a compound of Formula I, or a pharmaceutically acceptable salt thereof, may be prepared for various routes and types of administration. Various dosage forms may exist for the same compound, since different medical conditions may warrant different routes of administration.
The amount of active ingredient that may be combined with the carrier material to produce a single dosage form will vary depending upon the subject treated and the particular mode of administration. For example, a time-release formulation intended for oral administration to humans may contain approximately 1 to 1000 mg of active material compounded with an appropriate and convenient amount of carrier material which may vary from about 5 to about 95% of the total compositions (weight: weight). The pharmaceutical composition can be prepared to provide easily measurable amounts for administration. For example, an aqueous solution intended for intravenous infusion may contain from about 3 to 500 μg of the active ingredient per milliliter of solution in order that infusion of a suitable volume at a rate of about 30 mL/hr can occur. As a general proposition, the initial pharmaceutically effective amount of the inhibitor administered will be in the range of about 0.01-100 mg/kg per dose, namely about 0.1 to 20 mg/kg of patient body weight per day, with the typical initial range of compound used being 0.3 to 15 mg/kg/day.
The term “therapeutically effective amount” as used herein means that amount of active compound or pharmaceutical agent that elicits the biological or medicinal response in a tissue, system, animal or human that is being sought by a researcher, veterinarian, medical doctor or other clinician. The therapeutically or pharmaceutically effective amount of the compound to be administered will be governed by such considerations, and is the minimum amount necessary to ameliorate, cure or treat the disease or disorder or one or more of its symptoms.
The pharmaceutical compositions of Formula I will be formulated, dosed, and administered in a fashion, i.e., amounts, concentrations, schedules, course, vehicles, and route of administration, consistent with good medical practice. Factors for consideration in this context include the particular disorder being treated, the particular mammal being treated, the clinical condition of the individual patient, the cause of the disorder, the site of delivery of the agent, the method of administration, the scheduling of administration, and other factors known to medical practitioners, such as the age, weight, and response of the individual patient.
The term “prophylactically effective amount” refers to an amount effective in preventing or substantially lessening the chances of acquiring a disease or disorder or in reducing the severity of the disease or disorder before it is acquired or reducing the severity of one or more of its symptoms before the symptoms develop. Roughly, prophylactic measures are divided between primary prophylaxis (to prevent the development of a disease) and secondary prophylaxis (whereby the disease has already developed and the patient is protected against worsening of this process).
Acceptable diluents, carriers, excipients, and stabilizers are those that are nontoxic to recipients at the dosages and concentrations employed, and include buffers such as phosphate, citrate, and other organic acids; antioxidants including ascorbic acid and methionine; preservatives (such as octadecyldimethylbenzyl ammonium chloride; hexamethonium chloride; benzalkonium chloride, benzethonium chloride; phenol, butyl or benzyl alcohol; alkyl parabens such as methyl or propyl paraben; catechol; resorcinol; cyclohexanol; 3-pentanol; and m-cresol); proteins, such as serum albumin, gelatin, or immunoglobulins; hydrophilic polymers such as polyvinylpyrrolidone; amino acids such as glycine, glutamine, asparagine, histidine, arginine, or lysine; monosaccharides, disaccharides, and other carbohydrates including glucose, mannose, or dextrins; chelating agents such as EDTA; sugars such as sucrose, mannitol, tretralose or sorbitol; salt-forming counter-ions such as sodium; metal complexes (e.g. Zn-protein complexes); and/or non-ionic surfactants such as TWEENTM, PLURONICSTM or polyethylene glycol (PEG). The active pharmaceutical ingredients may also be entrapped in microcapsules prepared, for example, by coacervation techniques or by interfacial polymerization, e.g., hydroxymethylcellulose or gelatin-microcapsules and poly-(methylmethacylate) microcapsules, respectively; in colloidal drug delivery systems (for example, liposomes, albumin microspheres, microemulsions, nanoparticles and nanocapsules) or in macroemulsions. Such techniques are disclosed in Remington's: The Science and Practice of Pharmacy, 21st Edition, University of the Sciences in Philadelphia, Eds., 2005 (hereafter “Remington's”).
“Controlled drug delivery systems” supply the drug to the body in a manner precisely controlled to suit the drug and the conditions being treated. The primary aim is to achieve a therapeutic drug concentration at the site of action for the desired duration of time. The term “controlled release” is often used to refer to a variety of methods that modify release of drug from a dosage form. This term includes preparations labeled as “extended release”, “delayed release”, “modified release” or “sustained release”. In general, one can provide for controlled release of the agents described herein through the use of a wide variety of polymeric carriers and controlled release systems including erodible and non-erodible matrices, osmotic control devices, various reservoir devices, enteric coatings and multiparticulate control devices.
“Sustained-release preparations” are the most common applications of controlled release. Suitable examples of sustained-release preparations include semipermeable matrices of solid hydrophobic polymers containing the compound, which matrices are in the form of shaped articles, e.g. films, or microcapsules. Examples of sustained-release matrices include polyesters, hydrogels (for example, poly(2-hydroxyethyl-methacrylate), or poly(vinylalcohol)), polylactides (U.S. Pat. No. 3,773,919), copolymers of L-glutamic acid and gamma-ethyl-L-glutamate, non-degradable ethylene-vinyl acetate, degradable lactic acid-glycolic acid copolymers, and poly-D-(−)-3-hydroxybutyric acid.
“Immediate-release preparations” may also be prepared. The objective of these formulations is to get the drug into the bloodstream and to the site of action as rapidly as possible. For instance, for rapid dissolution, most tablets are designed to undergo rapid disintegration to granules and subsequent deaggregation to fine particles. This provides a larger surface area exposed to the dissolution medium, resulting in a faster dissolution rate.
Agents described herein can be incorporated into an erodible or non-erodible polymeric matrix controlled release device. By an erodible matrix is meant aqueous-erodible or water-swellable or aqueous-soluble in the sense of being either erodible or swellable or dissolvable in pure water or requiring the presence of an acid or base to ionize the polymeric matrix sufficiently to cause erosion or dissolution. When contacted with the aqueous environment of use, the erodible polymeric matrix imbibes water and forms an aqueous-swollen gel or matrix that entraps the agent described herein. The aqueous-swollen matrix gradually erodes, swells, disintegrates or dissolves in the environment of use, thereby controlling the release of a compound described herein to the environment of use. One ingredient of this water-swollen matrix is the water-swellable, erodible, or soluble polymer, which may generally be described as an osmopolymer, hydrogel or water-swellable polymer. Such polymers may be linear, branched, or cross linked. The polymers may be homopolymers or copolymers. In certain embodiments, they may be synthetic polymers derived from vinyl, acrylate, methacrylate, urethane, ester and oxide monomers. In other embodiments, they can be derivatives of naturally occurring polymers such as polysaccharides (e.g. chitin, chitosan, dextran and pullulan; gum agar, gum arabic, gum karaya, locust bean gum, gum tragacanth, carrageenans, gum ghatti, guar gum, xanthan gum and scleroglucan), starches (e.g. dextrin and maltodextrin), hydrophilic colloids (e.g. pectin), phosphatides (e.g. lecithin), alginates (e.g. ammonium alginate, sodium, potassium or calcium alginate, propylene glycol alginate), gelatin, collagen, and cellulosics. Cellulosics are cellulose polymer that has been modified by reaction of at least a portion of the hydroxyl groups on the saccharide repeat units with a compound to form an ester-linked or an ether-linked substituent. For example, the cellulosic ethyl cellulose has an ether linked ethyl substituent attached to the saccharide repeat unit, while the cellulosic cellulose acetate has an ester linked acetate substituent. In certain embodiments, the cellulosics for the erodible matrix comprises aqueous-soluble and aqueous-erodible cellulosics can include, for example, ethyl cellulose (EC), methylethyl cellulose (MEC), carboxymethyl cellulose (CMC), CMEC, hydroxyethyl cellulose (HEC), hydroxypropyl cellulose (HPC), cellulose acetate (CA), cellulose propionate (CP), cellulose butyrate (CB), cellulose acetate butyrate (CAB), CAP, CAT, hydroxypropyl methyl cellulose (HPMC), HPMCP, HPMCAS, hydroxypropyl methyl cellulose acetate trimellitate (HPMCAT), and ethylhydroxy ethylcellulose (EHEC). In certain embodiments, the cellulosics comprises various grades of low viscosity (MW less than or equal to 50,000 daltons, for example, the Dow MethocelTM series E5, E15LV, E50LV and K100LY) and high viscosity (MW greater than 50,000 daltons, for example, E4MCR, E10MCR, K4M, K15M and K100M and the MethocelTM K series) HPMC. Other commercially available types of HPMC include the Shin Etsu Metolose 90SH series.
Other materials useful as the erodible matrix material include, but are not limited to, pullulan, polyvinyl pyrrolidone, polyvinyl alcohol, polyvinyl acetate, glycerol fatty acid esters, polyacrylamide, polyacrylic acid, copolymers of ethacrylic acid or methacrylic acid (EUDRAGIT®, Rohm America, Inc., Piscataway, N.J.) and other acrylic acid derivatives such as homopolymers and copolymers of butylmethacrylate, methylmethacrylate, ethylmethacrylate, ethylacrylate, (2-dimethylaminoethyl) methacrylate, and (trimethylaminoethyl) methacrylate chloride.
Alternatively, the agents of the present invention may be administered by or incorporated into a non-erodible matrix device. In such devices, an agent described herein is distributed in an inert matrix. The agent is released by diffusion through the inert matrix. Examples of materials suitable for the inert matrix include insoluble plastics (e.g methyl acrylate-methyl methacrylate copolymers, polyvinyl chloride, polyethylene), hydrophilic polymers (e.g. ethyl cellulose, cellulose acetate, cross linked polyvinylpyrrolidone (also known as crospovidone)), and fatty compounds (e.g. carnauba wax, microcrystalline wax, and triglycerides). Such devices are described further in Remington: The Science and Practice of Pharmacy, 20th edition (2000).
As noted above, the agents described herein may also be incorporated into an osmotic control device. Such devices generally include a core containing one or more agents as described herein and a water permeable, non-dissolving and non-eroding coating surrounding the core which controls the influx of water into the core from an aqueous environment of use so as to cause drug release by extrusion of some or all of the core to the environment of use. In certain embodiments, the coating is polymeric, aqueous-permeable, and has at least one delivery port. The core of the osmotic device optionally includes an osmotic agent which acts to imbibe water from the surrounding environment via such a semipermeable membrane. The osmotic agent contained in the core of this device may be an aqueous-swellable hydrophilic polymer or it may be an osmogen, also known as an osmagent. Pressure is generated within the device which forces the agent(s) out of the device via an orifice (of a size designed to minimize solute diffusion while preventing the build-up of a hydrostatic pressure head). Non limiting examples of osmotic control devices are disclosed in U.S. patent application Ser. No. 09/495,061.
The amount of water-swellable hydrophilic polymers present in the core may range from about 5 to about 80 wt % (including for example, 10 to 50 wt %). Non limiting examples of core materials include hydrophilic vinyl and acrylic polymers, polysaccharides such as calcium alginate, polyethylene oxide (PEO), polyethylene glycol (PEG), polypropylene glycol (PPG), poly(2-hydroxyethyl methacrylate), poly(acrylic) acid, poly(methacrylic) acid, polyvinylpyrrolidone (PVP) and cross linked PVP, polyvinyl alcohol (PVA), PVA/PVP copolymers and PVA/PVP copolymers with hydrophobic monomers such as methyl methacrylate, vinyl acetate, and the like, hydrophilic polyurethanes containing large PEO blocks, sodium croscarmellose, carrageenan, hydroxyethyl cellulose (HEC), hydroxypropyl cellulose (HPC), hydroxypropyl methyl cellulose (HPMC), carboxymethyl cellulose (CMC) and carboxyethyl cellulose (CEC), sodium alginate, polycarbophil, gelatin, xanthan gum, and sodium starch glycolat. Other materials include hydrogels comprising interpenetrating networks of polymers that may be formed by addition or by condensation polymerization, the components of which may comprise hydrophilic and hydrophobic monomers such as those just mentioned. Water-swellable hydrophilic polymers include but are not limited to PEO, PEG, PVP, sodium croscarmellose, HPMC, sodium starch glycolate, polyacrylic acid and cross linked versions or mixtures thereof.
The core may also include an osmogen (or osmagent). The amount of osmogen present in the core may range from about 2 to about 70 wt % (including, for example, from 10 to 50 wt %). Typical classes of suitable osmogens are water-soluble organic acids, salts and sugars that are capable of imbibing water to thereby effect an osmotic pressure gradient across the barrier of the surrounding coating. Typical useful osmogens include but are not limited to magnesium sulfate, magnesium chloride, calcium chloride, sodium chloride, lithium chloride, potassium sulfate, sodium carbonate, sodium sulfite, lithium sulfate, potassium chloride, sodium sulfate, mannitol, xylitol, urea, sorbitol, inositol, raffinose, sucrose, glucose, fructose, lactose, citric acid, succinic acid, tartaric acid, and mixtures thereof. In certain embodiments, the osmogen is glucose, lactose, sucrose, mannitol, xylitol, sodium chloride, including combinations thereof.
The rate of drug delivery is controlled by such factors as the permeability and thickness of the coating, the osmotic pressure of the drug-containing layer, the degree of hydrophilicity of the hydrogel layer, and the surface area of the device. Those skilled in the art will appreciate that increasing the thickness of the coating will reduce the release rate, while any of the following will increase the release rate: increasing the permeability of the coating; increasing the hydrophilicity of the hydrogel layer; increasing the osmotic pressure of the drug-containing layer; or increasing the device's surface area.
In certain embodiments, entrainment of particles of agents described herein in the extruding fluid during operation of such osmotic device is desirable. For the particles to be well entrained, the agent drug form is dispersed in the fluid before the particles have an opportunity to settle in the tablet core. One means of accomplishing this is by adding a disintegrant that serves to break up the compressed core into its particulate components. Non limiting examples of standard disintegrants include materials such as sodium starch glycolate (e.g., ExplotabTM CLV), microcrystalline cellulose (e.g., AvicelTM), microcrystalline silicified cellulose (e.g., ProSoIvTM) and croscarmellose sodium (e.g., Ac-Di-SolTM), and other disintegrants known to those skilled in the art. Depending upon the particular formulation, some disintegrants work better than others. Several disintegrants tend to form gels as they swell with water, thus hindering drug delivery from the device. Non-gelling, non-swelling disintegrants provide a more rapid dispersion of the drug particles within the core as water enters the core. In certain embodiments, non-gelling, non-swelling disintegrants are resins, for example, ion-exchange resins. In one embodiment, the resin is AmberliteTM IRP 88 (available from Rohm and Haas, Philadelphia, Pa.). When used, the disintegrant is present in amounts ranging from about 1-25% of the core agent.
Another example of an osmotic device is an osmotic capsule. The capsule shell or portion of the capsule shell can be semipermeable. The capsule can be filled either by a powder or liquid consisting of an agent described herein, excipients that imbibe water to provide osmotic potential, and/or a water-swellable polymer, or optionally solubilizing excipients. The capsule core can also be made such that it has a bilayer or multilayer agent analogous to the bilayer, trilayer or concentric geometries described above.
Another class of osmotic device useful in this invention comprises coated swellable tablets, for example, as described in EP378404. Coated swellable tablets comprise a tablet core comprising an agent described herein and a swelling material, preferably a hydrophilic polymer, coated with a membrane, which contains holes, or pores through which, in the aqueous use environment, the hydrophilic polymer can extrude and carry out the agent. Alternatively, the membrane may contain polymeric or low molecular weight water-soluble porosigens. Porosigens dissolve in the aqueous use environment, providing pores through which the hydrophilic polymer and agent may extrude. Examples of porosigens are water-soluble polymers such as HPMC, PEG, and low molecular weight compounds such as glycerol, sucrose, glucose, and sodium chloride. In addition, pores may be formed in the coating by drilling holes in the coating using a laser or other mechanical means. In this class of osmotic devices, the membrane material may comprise any film-forming polymer, including polymers which are water permeable or impermeable, providing that the membrane deposited on the tablet core is porous or contains water-soluble porosigens or possesses a macroscopic hole for water ingress and drug release. Embodiments of this class of sustained release devices may also be multilayered, as described, for example, in EP378404.
When an agent described herein is a liquid or oil, such as a lipid vehicle formulation, for example as described in WO05/011634, the osmotic controlled-release device may comprise a soft-gel or gelatin capsule formed with a composite wall and comprising the liquid formulation where the wall comprises a barrier layer formed over the external surface of the capsule, an expandable layer formed over the barrier layer, and a semipermeable layer formed over the expandable layer. A delivery port connects the liquid formulation with the aqueous use environment. Such devices are described, for example, in U.S. Pat. No. 6,419,952, U.S. Pat. No. 6,342,249, U.S. Pat. No. 5,324,280, U.S. Pat. No. 4,672,850, U.S. Pat. No. 4,627,850, U.S. Pat. No. 4,203,440, and U.S. Pat. No. 3,995,631.
As further noted above, the agents described herein may be provided in the form of microparticulates, generally ranging in size from about 10 μm to about 2 mm (including, for example, from about 100 μm to 1 mm in diameter). Such multiparticulates may be packaged, for example, in a capsule such as a gelatin capsule or a capsule formed from an aqueous-soluble polymer such as HPMCAS, HPMC or starch; dosed as a suspension or slurry in a liquid; or they may be formed into a tablet, caplet, or pill by compression or other processes known in the art. Such multiparticulates may be made by any known process, such as wet- and dry-granulation processes, extrusion/spheronization, roller-compaction, melt-congealing, or by spray-coating seed cores. For example, in wet- and dry-granulation processes, the agent described herein and optional excipients may be granulated to form multiparticulates of the desired size.
The agents can be incorporated into microemulsions, which generally are thermodynamically stable, isotropically clear dispersions of two immiscible liquids, such as oil and water, stabilized by an interfacial film of surfactant molecules (Encyclopedia of Pharmaceutical Technology, New York: Marcel Dekker, 1992, volume 9). For the preparation of microemulsions, surfactant (emulsifier), co-surfactant (co-emulsifier), an oil phase and a water phase are necessary. Suitable surfactants include any surfactants that are useful in the preparation of emulsions, e.g., emulsifiers that are typically used in the preparation of creams. The co-surfactant (or “co-emulsifier”) is generally selected from the group of polyglycerol derivatives, glycerol derivatives and fatty alcohols. Preferred emulsifier/co-emulsifier combinations are generally although not necessarily selected from the group consisting of: glyceryl monostearate and polyoxyethylene stearate; polyethylene glycol and ethylene glycol palmitostearate; and caprilic and capric triglycerides and oleoyl macrogolglycerides. The water phase includes not only water but also, typically, buffers, glucose, propylene glycol, polyethylene glycols, preferably lower molecular weight polyethylene glycols (e.g., PEG 300 and PEG 400), and/or glycerol, and the like, while the oil phase will generally comprise, for example, fatty acid esters, modified vegetable oils, silicone oils, mixtures of mono- di- and triglycerides, mono- and di-esters of PEG (e.g., oleoyl macrogol glycerides), etc.
The compounds described herein can be incorporated into pharmaceutically-acceptable nanoparticle, nanosphere, and nanocapsule formulations (Delie and Blanco-Prieto, 2005, Molecule 10:65-80). Nanocapsules can generally entrap compounds in a stable and reproducible way. To avoid side effects due to intracellular polymeric overloading, ultrafine particles (sized around 0.1 μm) can be designed using polymers able to be degraded in vivo (e.g. biodegradable polyalkyl-cyanoacrylate nanoparticles). Such particles are described in the prior art.
Implantable devices coated with a compound of this invention are another embodiment of the present invention. The compounds may also be coated on implantable medical devices, such as beads, or co-formulated with a polymer or other molecule, to provide a “drug depot”, thus permitting the drug to be released over a longer time period than administration of an aqueous solution of the drug. Suitable coatings and the general preparation of coated implantable devices are described in U.S. Pat. Nos. 6,099,562; 5,886,026; and 5,304,121. The coatings are typically biocompatible polymeric materials such as a hydrogel polymer, polymethyldisiloxane, polycaprolactone, polyethylene glycol, polylactic acid, ethylene vinyl acetate, and mixtures thereof. The coatings may optionally be further covered by a suitable topcoat of fluorosilicone, polysaccharides, polyethylene glycol, phospholipids or combinations thereof to impart controlled release characteristics in the composition.
The formulations include those suitable for the administration routes detailed herein. The formulations may conveniently be presented in unit dosage form and may be prepared by any of the methods well known in the art of pharmacy. Techniques and formulations generally are found in Remington's. Such methods include the step of bringing into association the active ingredient with the carrier which constitutes one or more accessory ingredients. In general the formulations are prepared by uniformly and intimately bringing into association the active ingredient with liquid carriers or finely divided solid carriers or both, and then, if necessary, shaping the product.
The terms “administer”, “administering” or “administration” in reference to a compound, composition or formulation of the invention means introducing the compound into the system of the animal in need of treatment. When a compound of the invention is provided in combination with one or more other active agents, “administration” and its variants are each understood to include concurrent and/or sequential introduction of the compound and the other active agents.
The compositions described herein may be administered systemically or locally, e.g.: orally (e.g. using capsules, powders, solutions, suspensions, tablets, sublingual tablets and the like), by inhalation (e.g. with an aerosol, gas, inhaler, nebulizer or the like), to the ear (e.g. using ear drops), topically (e.g. using creams, gels, liniments, lotions, ointments, pastes, transdermal patches, etc), ophthalmically (e.g. with eye drops, ophthalmic gels, ophthalmic ointments), rectally (e.g. using enemas or suppositories), nasally, buccally, vaginally (e.g. using douches, intrauterine devices, vaginal suppositories, vaginal rings or tablets, etc), via an implanted reservoir or the like, or parenterally depending on the severity and type of the disease being treated. The term “parenteral” as used herein includes, but is not limited to, subcutaneous, intravenous, intramuscular, intra-articular, intra-synovial, intrasternal, intrathecal, intrahepatic, intralesional and intracranial injection or infusion techniques. Preferably, the compositions are administered orally, intraperitoneally or intravenously.
The pharmaceutical compositions described herein may be orally administered in any orally acceptable dosage form including, but not limited to, capsules, tablets, aqueous suspensions or solutions. Liquid dosage forms for oral administration include, but are not limited to, pharmaceutically acceptable emulsions, microemulsions, solutions, suspensions, syrups and elixirs. In addition to the active compounds, the liquid dosage forms may contain inert diluents commonly used in the art such as, for example, water or other solvents, solubilizing agents and emulsifiers such as ethyl alcohol, isopropyl alcohol, ethyl carbonate, ethyl acetate, benzyl alcohol, benzyl benzoate, propylene glycol, 1,3-butylene glycol, dimethylformamide, oils (in particular, cottonseed, groundnut, corn, germ, olive, castor, and sesame oils), glycerol, tetrahydrofurfuryl alcohol, polyethylene glycols and fatty acid esters of sorbitan, and mixtures thereof. Besides inert diluents, the oral compositions can also include adjuvants such as wetting agents, emulsifying and suspending agents, sweetening, flavoring, and perfuming agents.
Solid dosage forms for oral administration include capsules, tablets, pills, powders, and granules. In such solid dosage forms, the active compound is mixed with at least one inert, pharmaceutically acceptable excipient or carrier such as sodium citrate or dicalcium phosphate and/or a) fillers or extenders such as starches, lactose, sucrose, glucose, mannitol, and silicic acid, b) binders such as, for example, carboxymethylcellulose, alginates, gelatin, polyvinylpyrrolidinone, sucrose, and acacia, c) humectants such as glycerol, d) disintegrating agents such as agar-agar, calcium carbonate, potato or tapioca starch, alginic acid, certain silicates, and sodium carbonate, e) solution retarding agents such as paraffin, f) absorption accelerators such as quaternary ammonium compounds, g) wetting agents such as, for example, cetyl alcohol and glycerol monostearate, h) absorbents such as kaolin and bentonite clay, and i) lubricants such as talc, calcium stearate, magnesium stearate, solid polyethylene glycols, sodium lauryl sulfate, and mixtures thereof. Tablets may be uncoated or may be coated by known techniques including microencapsulation to mask an unpleasant taste or to delay disintegration and adsorption in the gastrointestinal tract and thereby provide a sustained action over a longer period. For example, a time delay material such as glyceryl monostearate or glyceryl distearate alone or with a wax may be employed. A water soluble taste masking material such as hydroxypropyl-methylcellulose or hydroxypropyl-cellulose may be employed.
Formulations of a compound of Formula I that are suitable for oral administration may be prepared as discrete units such as tablets, pills, troches, lozenges, aqueous or oil suspensions, dispersible powders or granules, emulsions, hard or soft capsules, e.g. gelatin capsules, syrups or elixirs. Formulations of a compound intended for oral use may be prepared according to any method known to the art for the manufacture of pharmaceutical compositions.
Compressed tablets may be prepared by compressing in a suitable machine the active ingredient in a free-flowing form such as a powder or granules, optionally mixed with a binder, lubricant, inert diluent, preservative, surface active or dispersing agent. Molded tablets may be made by molding in a suitable machine a mixture of the powdered active ingredient moistened with an inert liquid diluent.
Formulations for oral use may also be presented as hard gelatin capsules wherein the active ingredient is mixed with an inert solid diluent, for example, calcium carbonate, calcium phosphate or kaolin, or as soft gelatin capsules wherein the active ingredient is mixed with water soluble carrier such as polyethyleneglycol or an oil medium, for example peanut oil, liquid paraffin, or olive oil.
The active compounds can also be in microencapsulated form with one or more excipients as noted above.
When aqueous suspensions are required for oral use, the active ingredient is combined with emulsifying and suspending agents. If desired, certain sweetening and/or flavoring agents may be added. Syrups and elixirs may be formulated with sweetening agents, for example glycerol, propylene glycol, sorbitol or sucrose. Such formulations may also contain a demulcent, a preservative, flavoring and coloring agents and antioxidant.
Sterile injectable forms of the compositions described herein (e.g. for parenteral administration) may be aqueous or oleaginous suspension. These suspensions may be formulated according to techniques known in the art using suitable dispersing or wetting agents and suspending agents. The sterile injectable preparation may also be a sterile injectable solution or suspension in a non-toxic parenterally-acceptable diluent or solvent, for example as a solution in 1,3-butanediol. Among the acceptable vehicles and solvents that may be employed are water, Ringer's solution and isotonic sodium chloride solution. In addition, sterile, fixed oils are conventionally employed as a solvent or suspending medium. For this purpose, any bland fixed oil may be employed including synthetic mono- or di-glycerides. Fatty acids, such as oleic acid and its glyceride derivatives are useful in the preparation of injectables, as are natural pharmaceutically-acceptable oils, such as olive oil or castor oil, especially in their polyoxyethylated versions. These oil solutions or suspensions may also contain a long-chain alcohol diluent or dispersant, such as carboxymethyl cellulose or similar dispersing agents which are commonly used in the formulation of pharmaceutically acceptable dosage forms including emulsions and suspensions. Other commonly used surfactants, such as Tweens, Spans and other emulsifying agents or bioavailability enhancers which are commonly used in the manufacture of pharmaceutically acceptable solid, liquid, or other dosage forms may also be used for the purposes of injectable formulations.
Oily suspensions may be formulated by suspending a compound of Formula I in a vegetable oil, for example arachis oil, olive oil, sesame oil or coconut oil, or in mineral oil such as liquid paraffin. The oily suspensions may contain a thickening agent, for example beeswax, hard paraffin or cetyl alcohol. Sweetening agents such as those set forth above, and flavoring agents may be added to provide a palatable oral preparation. These compositions may be preserved by the addition of an anti-oxidant such as butylated hydroxyanisol or alpha-tocopherol.
Aqueous suspensions of a compound of Formula I contain the active materials in admixture with excipients suitable for the manufacture of aqueous suspensions. Such excipients include a suspending agent, such as sodium carboxymethylcellulose, croscarmellose, povidone, methylcellulose, hydroxypropyl methylcelluose, sodium alginate, polyvinylpyrrolidone, gum tragacanth and gum acacia, and dispersing or wetting agents such as a naturally occurring phosphatide (e.g., lecithin), a condensation product of an alkylene oxide with a fatty acid (e.g., polyoxyethylene stearate), a condensation product of ethylene oxide with a long chain aliphatic alcohol (e.g., heptadecaethyleneoxycetanol), a condensation product of ethylene oxide with a partial ester derived from a fatty acid and a hexitol anhydride (e.g., polyoxyethylene sorbitan monooleate). The aqueous suspension may also contain one or more preservatives such as ethyl or n-propyl p-hydroxy-benzoate, one or more coloring agents, one or more flavoring agents and one or more sweetening agents, such as sucrose or saccharin.
The injectable formulations can be sterilized, for example, by filtration through a bacterial-retaining filter, or by incorporating sterilizing agents in the form of sterile solid compositions which can be dissolved or dispersed in sterile water or other sterile injectable medium prior to use.
In order to prolong the effect of a compound described herein, it is often desirable to slow the absorption of the compound from subcutaneous or intramuscular injection. This may be accomplished by the use of a liquid suspension of crystalline or amorphous material with poor water solubility. The rate of absorption of the compound then depends upon its rate of dissolution that, in turn, may depend upon crystal size and crystalline form. Alternatively, delayed absorption of a parenterally administered compound form is accomplished by dissolving or suspending the compound in an oil vehicle. Injectable depot forms are made by forming microencapsulated matrices of the compound in biodegradable polymers such as polylactide-polyglycolide. Depending upon the ratio of compound to polymer and the nature of the particular polymer employed, the rate of compound release can be controlled. Examples of other biodegradable polymers include poly(orthoesters) and poly(anhydrides). Depot injectable formulations are also prepared by entrapping the compound in liposomes or microemulsions that are compatible with body tissues.
The injectable solutions or microemulsions may be introduced into a patient's bloodstream by local bolus injection. Alternatively, it may be advantageous to administer the solution or microemulsion in such a way as to maintain a constant circulating concentration of the instant compound. In order to maintain such a constant concentration, a continuous intravenous delivery device may be utilized. An example of such a device is the Deltec CADD-PLUSTM model 5400 intravenous pump.
Compositions for rectal or vaginal administration are preferably suppositories which can be prepared by mixing the compounds described herein with suitable non-irritating excipients or carriers such as cocoa butter, beeswax, polyethylene glycol or a suppository wax which are solid at ambient temperature but liquid at body temperature and therefore melt in the rectum or vaginal cavity and release the active compound. Other formulations suitable for vaginal administration may be presented as pessaries, tampons, creams, gels, pastes, foams or sprays.
The pharmaceutical compositions described herein may also be administered topically, especially when the target of treatment includes areas or organs readily accessible by topical application, including diseases of the eye, the ear, the skin, or the lower intestinal tract. Suitable topical formulations are readily prepared for each of these areas or organs.
Dosage forms for topical or transdermal administration of a compound described herein include ointments, pastes, creams, lotions, gels, powders, solutions, sprays, inhalants or patches. The active component is admixed under sterile conditions with a pharmaceutically acceptable carrier and any needed preservatives or buffers as may be required. Ophthalmic formulation, eardrops, and eye drops are also contemplated as being within the scope of this invention. Additionally, the present invention contemplates the use of transdermal patches, which have the added advantage of providing controlled delivery of a compound to the body. Such dosage forms can be made by dissolving or dispensing the compound in the proper medium. Absorption enhancers can also be used to increase the flux of the compound across the skin. The rate can be controlled by either providing a rate controlling membrane or by dispersing the compound in a polymer matrix or gel. Topical application for the lower intestinal tract can be effected in a rectal suppository formulation (see above) or in a suitable enema formulation. Topically-transdermal patches may also be used.
For topical applications, the pharmaceutical compositions may be formulated in a suitable ointment containing the active component suspended or dissolved in one or more carriers. Carriers for topical administration of the compounds of this invention include, but are not limited to, mineral oil, liquid petrolatum, white petrolatum, propylene glycol, polyoxyethylene, polyoxypropylene compound, emulsifying wax and water. Alternatively, the pharmaceutical compositions can be formulated in a suitable lotion or cream containing the active components suspended or dissolved in one or more pharmaceutically acceptable carriers. Suitable carriers include, but are not limited to, mineral oil, sorbitan monostearate, polysorbate 60, cetyl esters wax, cetearyl alcohol, 2 octyldodecanol, benzyl alcohol and water.
For ophthalmic use, the pharmaceutical compositions may be formulated as micronized suspensions in isotonic, pH adjusted sterile saline, or, preferably, as solutions in isotonic, pH adjusted sterile saline, either with or without a preservative such as benzylalkonium chloride. Alternatively, for ophthalmic uses, the pharmaceutical compositions may be formulated in an ointment such as petrolatum. For treatment of the eye or other external tissues, e.g., mouth and skin, the formulations may be applied as a topical ointment or cream containing the active ingredient(s) in an amount of, for example, 0.075 to 20% w/w. When formulated in an ointment, the active ingredients may be employed with either an oil-based, paraffinic or a water-miscible ointment base.
Alternatively, the active ingredients may be formulated in a cream with an oil-in-water cream base. If desired, the aqueous phase of the cream base may include a polyhydric alcohol, i.e. an alcohol having two or more hydroxyl groups such as propylene glycol, butane 1,3-diol, mannitol, sorbitol, glycerol and polyethylene glycol (including PEG 400) and mixtures thereof. The topical formulations may desirably include a compound which enhances absorption or penetration of the active ingredient through the skin or other affected areas. Examples of such dermal penetration enhancers include dimethyl sulfoxide and related analogs.
The oily phase of emulsions prepared using a compound of Formula I may be constituted from known ingredients in a known manner. While the phase may comprise merely an emulsifier (otherwise known as an emulgent), it desirably comprises a mixture of at least one emulsifier with a fat or an oil or with both a fat and an oil. A hydrophilic emulsifier may be included together with a lipophilic emulsifier which acts as a stabilizer. In some embodiments, the emulsifier includes both an oil and a fat. Together, the emulsifier(s) with or without stabilizer(s) make up the so-called emulsifying wax, and the wax together with the oil and fat make up the so-called emulsifying ointment base which forms the oily dispersed phase of the cream formulations. Emulgents and emulsion stabilizers suitable for use in the formulation of a compound of Formula I include TweenTM-60, SpanTM-80, cetostearyl alcohol, benzyl alcohol, myristyl alcohol, glyceryl mono-stearate and sodium lauryl sulfate.
The pharmaceutical compositions may also be administered by nasal aerosol or by inhalation. Such compositions are prepared according to techniques well-known in the art of pharmaceutical formulation and may be prepared as solutions in saline, employing benzyl alcohol or other suitable preservatives, absorption promoters to enhance bioavailability, fluorocarbons, and/or other conventional solubilizing or dispersing agents. Formulations suitable for intrapulmonary or nasal administration have a particle size for example in the range of 0.1 to 500 micros (including particles in a range between 0.1 and 500 microns in increments microns such as 0.5, 1, 30, 35 microns, etc) which is administered by rapid inhalation through the nasal passage or by inhalation through the mouth so as to reach the alveolar sacs.
The pharmaceutical composition (or formulation) for use may be packaged in a variety of ways depending upon the method used for administering the drug. Generally, an article for distribution includes a container having deposited therein the pharmaceutical formulation in an appropriate form. Suitable containers are well-known to those skilled in the art and include materials such as bottles (plastic and glass), sachets, ampoules, plastic bags, metal cylinders, and the like. The container may also include a tamper-proof assemblage to prevent indiscreet access to the contents of the package. In addition, the container has deposited thereon a label that describes the contents of the container. The label may also include appropriate warnings.
The formulations may be packaged in unit-dose or multi-dose containers, for example sealed ampoules and vials, and may be stored in a freeze-dried (lyophilized) condition requiring only the addition of the sterile liquid carrier, for example water, for injection immediately prior to use. Extemporaneous injection solutions and suspensions are prepared from sterile powders, granules and tablets of the kind previously described. Preferred unit dosage formulations are those containing a daily dose or unit daily sub-dose, as herein above recited, or an appropriate fraction thereof, of the active ingredient.
In another aspect, a compound of Formula I or a pharmaceutically acceptable salt thereof may be formulated in a veterinary composition comprising a veterinary carrier. Veterinary carriers are materials useful for the purpose of administering the composition and may be solid, liquid or gaseous materials which are otherwise inert or accepFormula In the veterinary art and are compatible with the active ingredient. These veterinary compositions may be administered parenterally, orally or by any other desired route.
Therapeutic Methods
The present disclosure relates to stimulators of soluble guanylate cyclase (sGC), pharmaceutical formulations thereof and their use, alone or in combination with one or more additional agents, for treating and/or preventing various diseases, wherein an increase in the concentration of NO or an increase in the concentration of cGMP might be desirable. The diseases that can be treated include but are not limited topulmonary hypertension, arterial hypertension, heart failure, atherosclerosis, inflammation, thrombosis, renal fibrosis and failure, liver cirrhosis, erectile dysfunction and other related cardiovascular disorders.
Increased concentration of cGMP leads to vasodilation, inhibition of platelet aggregation and adhesion, anti-hypertensive effects, anti-remodeling effects, anti-apoptotic effects, anti-inflammatory effects and neuronal signal transmission effects. Thus, sGC stimulators may be used to treat and/or prevent a range of diseases and disorders, including but not limited to a peripheral, pulmonary, hepatic, liver, cardiac or cerebralvascular/endothelial disorders or conditions, a urogenital-gynecological disorder or condition, a thromboembolic disease, a fibrotic disorder, a pulmonary or respiratory disorder, a renal or hepatic disorder, a metabolic disorder, atherosclerosis, or a lipid related disorder.
In other embodiments, the compounds here disclosed are sGC stimulators that may be useful in the prevention and/or treatment of diseases and disorders characterized by undesirable reduced bioavailability of and/or sensitivity to NO, such as those associated with conditions of oxidative stress or nitrosative stress.
Throughout this disclosure, the terms “hypertension”, “arterial hypertension” or “high blood pressure (HBP)” are used interchangeable and refer to an extremely common and highly preventable chronic condition in which blood pressure (BP) in the arteries is higher than normal. If not properly controlled, it represents a significant risk factor for several serious cardiovascular and renal conditions. Hypertension may be a primary disease, called “essential hypertension” or “idiopathic hypertension”, or it may be caused by other diseases, in which case it is classified as “secondary hypertension”. Essential hypertension accounts for 90-95% of all cases.
As used herein, the term “resistant hypertension” refers to hypertension that remains above goal blood pressure (usually less than 140/90 mmHg, although a lower goal of less than 130/80 mmHg is recommended for patients with comorbid diabetes or kidney disease), in spite of concurrent use of three antihypertensive agents belonging to different antihypertensive drug classes. People who require four or more drugs to control their blood pressure are also considered to have resistant hypertension.
Hypertension is an extremely common comorbid condition in diabetes, affecting  ̃20-60% of patients with diabetes, depending on obesity, ethnicity, and age. This type of hypertension is herein referred to as “diabetic hypertension”. In type 2 diabetes, hypertension is often present as part of the metabolic syndrome of insulin resistance also including central obesity and dyslipidemia. In type 1 diabetes, hypertension may reflect the onset of diabetic nephropathy.
“Pulmonary hypertension (PH)”, as used herein, is a disease characterized by sustained elevations of blood pressure in the pulmonary vasculature (pulmonary artery, pulmonary vein and pulmonary capillaries), which results in right heart hypertrophy, eventually leading to right heart failure and death. Common symptoms of PH include shortness of breath, dizziness and fainting, all of which are exacerbated by exertion. Without treatment, median life expectancy following diagnosis is 2.8 years. PH exists in many different forms, which are categorized according to their etiology. Categories include pulmonary arterial hypertension (PAH), PH with left heart disease, PH associated with lung diseases and/or hypoxaemia, PH due to chronic thrombotic and/or embolic disease and miscellaneous PH. PAH is rare in the general population, but the prevalence increases in association with certain common conditions such as HIV infection, scleroderma and sickle cell disease. Other forms of PH are generally more common than PAH, and, for instance, the association of PH with chronic obstructive pulmonary disease (COPD) is of particular concern. Current treatment for pulmonary hypertension depends on the stage and the mechanism of the disease.
As used herein “heart failure” is a progressive disorder of left ventricular (LV) myocardial remodeling that culminates in a complex clinical syndrome in which impaired cardiac function and circulatory congestion are the defining features, and results in insufficient delivery of blood and nutrients to body tissues. The condition occurs when the heart is damaged or overworked and unable to pump out all the blood that returns to it from the systemic circulation. As less blood is pumped out, blood returning to the heart backs up and fluid builds up in other parts of the body. Heart failure also impairs the kidneys' ability to dispose of sodium and water, complicating fluid retention further. Heart failure is characterized by autonomic dysfunction, neurohormonal activation and overproduction of cytokines, which contribute to progressive circulatory failure. Symptoms of heart failure include: dyspnea (shortness of breath) while exercising or resting and waking at night due to sudden breathlessness, both indicative of pulmonary edema; general fatigue or weakness, edema of the feet, ankles and legs, rapid weight gain, chronic cough, including that producing mucus or blood. Depending on its clinical presentation, heart failure is classified as de novo, transient or chronic. Acute heart failure, i.e. the rapid or gradual onset of symptoms requiring urgent therapy, may develop de novo or as a result of chronic heart failure becoming decompensated. Diabetes is a common comorbidity in patients with heart failure and is associated with poorer outcomes as well as potentially compromising the efficacy of treatments. Other important comorbidities include systemic hypertension, chronic airflow obstruction, sleep apnea, cognitive dysfunction, anemia, chronic kidney disease and arthritis. Chronic left heart failure is frequently associated with the development of pulmonary hypertension. The frequency of certain comorbidities varies by gender: among women, hypertension and thyroid disease are more common, while men more commonly suffer from chronic obstructive pulmonary disease (COPD), peripheral vascular disease, coronary artery disease and renal insufficiency. Depression is a frequent comorbidity of heart failure and the two conditions can and often do complicate one another. Cachexia has long been recognized as a serious and frequent complication of heart failure, affecting up to 15% of all heart failure patients and being associated with poor prognosis. Cardiac cachexia is defined as the nonedematous, nonvoluntary loss of at least 6% of body weight over a period of six months.
The term “sleep apnea” refers to the most common of the sleep-disordered breathing disorders. It is a condition characterized by intermittent, cyclical reductions or total cessations of airflow, which may or may not involve obstruction of the upper airway. There are three types of sleep apnea: obstructive sleep apnea, the most common form, central sleep apnea and mixed sleep apnea.
“Central sleep apnea (CSA)”, is caused by a malfunction in the brain's normal signal to breathe, rather than physical blockage of the airway. The lack of respiratory effort leads to an increase in carbon dioxide in the blood, which may rouse the patient. CSA is rare in the general population, but is a relatively common occurrence in patients with systolic heart failure.
As used herein, the term “metabolic syndrome”, “insulin resistance syndrome” or “syndrome X”, refers to a group or clustering of metabolic conditions (abdominal obesity, elevated fasting glucose, “dyslipidemia” (i.e., elevated lipid levels) and elevated blood pressure (HBP)) which occur together more often than by chance alone and that together promote the development of type 2 diabetes and cardiovascular disease. Metabolic syndrome is characterized by a specific lipid profile of increased triglycerides, decreased high-density lipoprotein cholesterol (HDL-cholesterol) and in some cases moderately elevated low-density lipoprotein cholesterol (LDL-cholesterol) levels, as well as accelerated progression of “atherosclerotic disease” due to the pressure of the component risk factors. There are several types of dyslipidemias: “hypercholesterolemia” refers to elevated levels of cholesterol. Familial hypercholesterolemia is a specific form of hypercholesterolemia due to a defect on chromosome 19 (19p13.1-13.3). “Hyperglyceridemia” refers to elevated levels of glycerides (e.g., “hypertrigliceridemia” involves elevated levels of triglycerides). “Hyperlipoproteinemia” refers to elevated levels of lipoproteins (usually LDL unless otherwise specified).
As used herein, the term “peripheral vascular disease (PVD)”, also commonly referred to as “peripheral arterial disease (PAD)” or “peripheral artery occlusive disease (PAOD)”, refers to the obstruction of large arteries not within the coronary, aortic arch vasculature, or brain. PVD can result from atherosclerosis, inflammatory processes leading to stenosis, an embolism, or thrombus formation. It causes either acute or chronic “ischemia (lack of blood supply)”. Often PVD is a term used to refer to atherosclerotic blockages found in the lower extremity. PVD also includes a subset of diseases classified as microvascular diseases resulting from episodal narrowing of the arteries (e.g., “Raynaud's phenomenon”), or widening thereof (erythromelalgia), i.e. vascular spasms.
The term “thrombosis” refers to the formation of a blood clot (“thrombus”) inside a blood vessel, obstructing the flow of blood through the circulatory system. When a blood vessel is injured, the body uses platelets (thrombocytes) and fibrin to form a blood clot to prevent blood loss. Alternatively, even when a blood vessel is not injured, blood clots may form in the body if the proper conditions present themselves. If the clotting is too severe and the clot breaks free, the traveling clot is now known as an “embolus”. The term “thromboembolism” refers to the combination of thrombosis and its main complication, “embolism”. When a thrombus occupies more than 75% of surface area of the lumen of an artery, blood flow to the tissue supplied is reduced enough to cause symptoms because of decreased oxygen (hypoxia) and accumulation of metabolic products like lactic acid (“gout”). More than 90% obstruction can result in anoxia, the complete deprivation of oxygen, and “infarction”, a mode of cell death.
An “embolism” (plural embolisms) is the event of lodging of an embolus (a detached intravascular mass capable of clogging arterial capillary beds at a site far from its origin) into a narrow capillary vessel of an arterial bed which causes a blockage (vascular occlusion) in a distant part of the body. This is not to be confused with a thrombus which blocks at the site of origin.
A “stroke”, or cerebrovascular accident (CVA), is the rapid loss of brain function(s) due to disturbance in the blood supply to the brain. This can be due to “ischemia” (lack of blood flow) caused by blockage (thrombosis, arterial embolism), or a hemorrhage (leakage of blood). As a result, the affected area of the brain cannot function, which might result in an inability to move one or more limbs on one side of the body, inability to understand or formulate speech, or an inability to see one side of the visual field. Risk factors for stroke include old age, hypertension, previous stroke or transient ischemic attack (TIA), diabetes, high cholesterol, cigarette smoking and atrial fibrillation. High blood pressure is the most important modifiable risk factor of stroke. An “ischemic stroke” is occasionally treated in a hospital with thrombolysis (also known as a “clot buster”), and some hemorrhagic strokes benefit from neurosurgery. Prevention of recurrence may involve the administration of antiplatelet drugs such as aspirin and dipyridamole, control and reduction of hypertension, and the use of statins. Selected patients may benefit from carotid endarterectomy and the use of anticoagulants.
“Ischemia” is a restriction in blood supply to tissues, causing a shortage of oxygen and glucose needed for cellular metabolism (to keep tissue alive). Ischemia is generally caused by problems with blood vessels, with resultant damage to or dysfunction of tissue. It also means local anemia in a given part of a body sometimes resulting from congestion (such as vasoconstriction, thrombosis or embolism).
According to the American Psychiatric Association's Diagnostic and Statistical Manual of Mental Disorders, Fourth Edition (DSM-IV), the term “sexual dysfunction” encompasses a series of conditions “characterized by disturbances in sexual desire and in the psychophysiological changes associated with the sexual response cycle”; while problems of this type are common, sexual dysfunction is only considered to exist when the problems cause distress for the patient. Sexual dysfunction can be either physical or psychological in origin. It can exist as a primary condition, generally hormonal in nature, although most often it is secondary to other medical conditions or to drug therapy for said conditions. All types of sexual dysfunction can be further classified as life-long, acquired, situational or generalized (or combinations thereof).
The DSM-IV-TR specifies five major categories of “female sexual dysfunction”: sexual desire/interest disorders; “sexual arousal disorders (including genital, subjective and combined)”; orgasmic disorder; dyspareunia and vaginismus; and persistent sexual arousal disorder.
“Female sexual arousal disorder (FSAD)” is defined as a persistent or recurring inability to attain or maintain sufficient levels of sexual excitement, causing personal distress. FSAD encompasses both the lack of subjective feelings of excitement (i.e., subjective sexual arousal disorder) and the lack of somatic responses such as lubrication and swelling (i.e., genital/physical sexual arousal disorder). FSAD may be strictly psychological in origin, although it generally is caused or complicated by medical or physiological factors. Hypoestrogenism is the most common physiologic condition associated with FSAD, which leads to urogenital atrophy and a decrease in vaginal lubrication.
As used herein, “erectile dysfunction (ED)” is a male sexual dysfunction characterized by the inability to develop or maintain an erection of the penis during sexual performance. A penile erection is the hydraulic effect of blood entering and being retained in sponge-like bodies within the penis. The process is often initiated as a result of sexual arousal, when signals are transmitted from the brain to nerves in the penis. Erectile dysfunction is indicated when an erection is difficult to produce. The most important organic causes are cardiovascular disease and diabetes, neurological problems (for example, trauma from prostatectomy surgery), hormonal insufficiencies (hypogonadism) and drug side effects.
Specific diseases of disorders which may be treated and/or prevented by administering an sGC stimulator of the invention, include but are not limited to: hypertension (e.g., diabetic hypertension, arterial hypertension, pulmonary hypertension, resistant hypertension, peripheral artery disease, etc), heart failure (e.g., left ventricular diastolic dysfunction (LVDD) and left ventricular systolic dysfunction (LVSD), sleep apnea associated with heart failure), arteriosclerotic disease (e.g., atherosclerosis), thromboembolic disorders (e.g., chronic thromboembolic pulmonary hypertension, thrombosis, stroke, embolism, pulmonary embolism), renal diseases (e.g., renal fibrosis, ischemic renal disease, renal failure, renal insufficiency, chronic kidney disease), hepatic disease (e.g., liver fibrosis or cirrhosis), respiratory disease (e.g., pulmonary fibrosis, asthma, chronic obstructive pulmonary disease, interstitial lung disease), sexual disorders (e.g., erectile dysfunction, male and female sexual dysfunction, vaginal atrophy), sickle cell anemia, neuro inflammatory diseases or disorders and metabolic disorders (e.g., lipid related disorders).
The compounds of Formula I as well as pharmaceutically acceptable salts thereof, as stimulators of sGC, are useful in the prevention and/or treatment of the following types of diseases, conditions and disorders which can benefit from sGC stimulation:
(1) Peripheral, pulmonary, hepatic, liver, cardiac or cerebral vascular/endothelial disorders/conditions:
disorders related to high blood pressure and decreased coronary blood flow such as increased acute and chronic coronary blood pressure, arterial hypertension and vascular disorder resulting from cardiac and renal complications (e.g. heart disease, stroke, cerebral ischemia, renal failure); resistant hypertension, diabetic hypertension, congestive heart failure; diastolic or sistolic dysfunction; coronary insufficiency; arrhythmias.
thromboembolic disorders and ischemias such as myocardial infarction, stroke, transient ischemic attacks (TIAs); stable or unstable angina pectoris;
peripheral arterial disease, peripheral occlusive arterial disease;
pulmonary/respiratory conditions such as pulmonary hypertension, pulmonary arterial hypertension, and associated pulmonary vascular remodeling (e.g. localized thrombosis and right heart hypertrophy); pulmonary hypertonia; primary pulmonary hypertension, secondary pulmonary hypertension, familial pulmonary hypertension, sporadic pulmonary hypertension, pre-capillary pulmonary hypertension, idiopathic pulmonary hypertension, thrombotic pulmonary arteriopathy, plexogenic pulmonary arteriopathy;
pulmonary hypertension associated with or related to: left ventricular dysfunction, hypoxemia, mitral valve disease, constrictive pericarditis, aortic stenosis, cardiomyopathy, mediastinal fibrosis, pulmonary fibrosis, anomalous pulmonary venous drainage, pulmonary venooclusive disease, pulmonary vasculitis, collagen vascular disease, congenital heart disease, pulmonary venous hypertension, interstitial lung disease, sleep-disordered breathing, sleep apnea, alveolar hypoventilation disorders, chronic exposure to high altitude, neonatal lung disease, alveolar-capillary dysplasia, sickle cell disease, other coagulation disorders, chronic thromboembolism, pulmonary embolism (due to tumor, parasites or foreign material), connective tissue disease, lupus, schitosomiasis, sarcoidosis, chronic obstructive pulmonary disease, asthma, emphysema, chronic bronchitis, pulmonary capillary hemangiomatosis; histiocytosis X, lymphangiomatosis and compressed pulmonary vessels (such as due to adenopathy, tumor or fibrosing mediastinitis);
arterosclerotic diseases or conditions such as atherosclerosis (e.g., associated with endothelial injury, platelet and monocyte adhesion and aggregation, smooth muscle proliferation and migration); restenosis (e.g. developed after thrombolysis therapies, percutaneous transluminal angioplasties (PTAs), percutaneous transluminal coronary angioplasties (PTCAs) and bypass); inflammation;
cardiovascular disease associated with metabolic syndrome (e.g., obesity, dyslipidemia, diabetis, high blood pressure); lipid related disorders such as dyslipidemia, hypercholesterolemia, hypertriglyceridemia, sitosterolemia, fatty liver disease, and hepatitis;
liver cirrhosis, associated with chronic liver disease, hepatic fibrosis, hepatic stellate cell activation, hepatic fibrous collagen and total collagen accumulation; liver disease of necro-inflammatory and/or of immunological origin; andurogenital system disorders, such as renal fibrosis and renal failure resulting from chronic kidney diseases or insufficiency (e.g. due to accumulation/deposition and tissue injury, progressive sclerosis, glomerunephritis); prostate hypertrophy;
(2) sexual disorders of conditions: erectile dysfunction; female sexual dysfunction (e.g., female sexual arousal dysfunction), vaginal atrophy and incontinence.
In other embodiments of the invention, the compounds of Formula I as well as pharmaceutically acceptable salts thereof are useful in the prevention and/or treatment of the following types of diseases, conditions and disorders which can benefit from sGC stimulation: hypertension, resistant hypertension, diabetic hypertension, pulmonary hypertension (PH), pulmonary arterial hypertension, PH associated with COPD, chronic airflow obstruction, asthma or pulmonary fibrosis, thrombosis, embolism, thromboembolic disorders, atherosclerosis, right heart hypertrophy, heart failure, diastolic dysfunction, systolic dysfunction, sleep apnea associated with heart failure, liver cirrhosis, renal fibrosis, renal failure resulting from chronic kidney diseases or insufficiency, metabolic disorder, dyslipidemia, hypercholesterolemia, hypertriglyceridemia, sitosterolemia, fatty liver disease, hepatitis, erectile dysfunction, female sexual dysfunction, female sexual arousal dysfunction and vaginal atrophy.
The terms, “disease”, “disorder” and “condition” may be used interchangeably here to refer to an sGC, cGMP and/or NO mediated medical or pathological condition.
As used herein, the terms “subject” and “patient” are used interchangeably. The terms “subject” and “patient” refer to an animal (e.g., a bird such as a chicken, quail or turkey, or a mammal), specifically a “mammal” including a non-primate (e.g., a cow, pig, horse, sheep, rabbit, guinea pig, rat, cat, dog, and mouse) and a primate (e.g., a monkey, chimpanzee and a human), and more specifically a human. In some embodiments, the subject is a non-human animal such as a farm animal (e.g., a horse, cow, pig or sheep), or a pet (e.g., a dog, cat, guinea pig or rabbit). In some embodiments, the subject is a human.
The invention also provides a method for treating one of the above diseases, conditions and disorders in a subject, comprising administering a therapeutically effective amount of a compound of Formula I, or a pharmaceutically acceptable salt thereof, to the subject in need of the treatment. Alternatively, the invention provides the use of a compound of Formula I, or a pharmaceutically acceptable salt thereof, in the treatment of one of these diseases, conditions and disorders in a subject in need of the treatment. The invention further provides a method of making or manufacturing a medicament useful for treating one of these diseases, conditions and disorders comprising using a compound of Formula I, or a pharmaceutically acceptable salt thereof.
The term “biological sample”, as used herein, refers to an in vitro or ex vivo sample, and includes, without limitation, cell cultures or extracts thereof; biopsied material obtained from a mammal or extracts thereof blood, saliva, urine, faeces, semen, tears, lymphatic fluid, ocular fluid, vitreous humour, or other body fluids or extracts thereof.
“Treat”, “treating” or “treatment” with regard to a disorder or disease refers to alleviating or abrogating the cause and/or the effects of the disorder or disease. As used herein, the terms “treat”, “treatment” and “treating” refer to the reduction or amelioration of the progression, severity and/or duration of an sGC, cGMP and/or NO mediated condition, or the amelioration of one or more symptoms (preferably, one or more discernable symptoms) of said condition (i.e. “managing” without “curing” the condition), resulting from the administration of one or more therapies (e.g., one or more therapeutic agents such as a compound or composition of the invention). In specific embodiments, the terms “treat”; “treatment” and “treating” refer to the amelioration of at least one measurable physical parameter of an sGC, cGMP and/or NO mediated condition. In other embodiments the terms “treat”, “treatment” and “treating” refer to the inhibition of the progression of an sGC, cGMP and/or NO mediated condition, either physically by, e.g., stabilization of a discernable symptom or physiologically by, e.g., stabilization of a physical parameter, or both.
The term “preventing” as used herein refers to administering a medicament beforehand to avert or forestall the appearance of one or more symptoms of a disease or disorder. The person of ordinary skill in the medical art recognizes that the term “prevent” is not an absolute term. In the medical art it is understood to refer to the prophylactic administration of a drug to substantially diminish the likelihood or seriousness of a condition, or symptom of the condition and this is the sense intended in this disclosure. The Physician's Desk Reference, a standard text in the field, uses the term “prevent” hundreds of times. As used therein, the terms “prevent”, “preventing” and “prevention” with regard to a disorder or disease, refer to averting the cause, effects, symptoms or progression of a disease or disorder prior to the disease or disorder fully manifesting itself.
In one embodiment, the methods of the invention are a preventative or “pre-emptive” measure to a patient, specifically a human, having a predisposition (e.g. a genetic predisposition) to developing an sGC, cGMP and/or NO related disease, disorder or symptom.
In other embodiments, the methods of the invention are a preventative or “pre-emptive” measure to a patient, specifically a human, suffering from a disease, disorder or condition that makes him at risk of developing an sGC, cGMP or NO related disease, disorder or symptom.
The compounds and pharmaceutical compositions described herein can be used alone or in combination therapy for the treatment or prevention of a disease or disorder mediated, regulated or influenced by sGC, cGMP and/or NO.
Compounds and compositions here disclosed are also useful for veterinary treatment of companion animals, exotic animals and farm animals, including, without limitation, dogs, cats, mice, rats, hamsters, gerbils, guinea pigs, rabbits, horses, pigs and cattle.
In other embodiments, the invention provides a method of stimulating sGC activity in a biological sample, comprising contacting said biological sample with a compound or composition of the invention. Use of a sGC stimulator in a biological sample is useful for a variety of purposes known to one of skill in the art. Examples of such purposes include, without limitation, biological assays and biological specimen storage.
Combination Therapies
The compounds and pharmaceutical compositions described herein can be used in combination therapy with one or more additional therapeutic agents. For combination treatment with more than one active agent, where the active agents are in separate dosage formulations, the active agents may be administered separately or in conjunction. In addition, the administration of one element may be prior to, concurrent to, or subsequent to the administration of the other agent.
When co-administered with other agents, e.g., when co-administered with another pain medication, an “effective amount” of the second agent will depend on the type of drug used. Suitable dosages are known for approved agents and can be adjusted by the skilled artisan according to the condition of the subject, the type of condition(s) being treated and the amount of a compound described herein being used. In cases where no amount is expressly noted, an effective amount should be assumed. For example, compounds described herein can be administered to a subject in a dosage range from between about 0.01 to about 10,000 mg/kg body weight/day, about 0.01 to about 5000 mg/kg body weight/day, about 0.01 to about 3000 mg/kg body weight/day, about 0.01 to about 1000 mg/kg body weight/day, about 0.01 to about 500 mg/kg body weight/day, about 0.01 to about 300 mg/kg body weight/day, about 0.01 to about 100 mg/kg body weight/day.
When “combination therapy” is employed, an effective amount can be achieved using a first amount of a compound of Formula I or a pharmaceutically acceptable salt thereof and a second amount of an additional suitable therapeutic agent.
In one embodiment of this invention, a compound of Formula I and the additional therapeutic agent are each administered in an effective amount (i.e., each in an amount which would be therapeutically effective if administered alone). In another embodiment, the compound of Formula I and the additional therapeutic agent are each administered in an amount which alone does not provide a therapeutic effect (a sub-therapeutic dose). In yet another embodiment, the compound of Formula I can be administered in an effective amount, while the additional therapeutic agent is administered in a sub-therapeutic dose. In still another embodiment, the compound of Formula I can be administered in a sub-therapeutic dose, while the additional therapeutic agent, for example, a suitable cancer-therapeutic agent is administered in an effective amount.
As used herein, the terms “in combination” or “co-administration” can be used interchangeably to refer to the use of more than one therapy (e.g., one or more prophylactic and/or therapeutic agents). The use of the terms does not restrict the order in which therapies (e.g., prophylactic and/or therapeutic agents) are administered to a subject.
Co-administration encompasses administration of the first and second amounts of the compounds in an essentially simultaneous manner, such as in a single pharmaceutical composition, for example, capsule or tablet having a fixed ratio of first and second amounts, or in multiple, separate capsules or tablets for each. In addition, such co administration also encompasses use of each compound in a sequential manner in either order. When co-administration involves the separate administration of the first amount of a compound of Formula I and a second amount of an additional therapeutic agent, the compounds are administered sufficiently close in time to have the desired therapeutic effect. For example, the period of time between each administration which can result in the desired therapeutic effect, can range from minutes to hours and can be determined taking into account the properties of each compound such as potency, solubility, bioavailability, plasma half-life and kinetic profile. For example, a compound of Formula I and the second therapeutic agent can be administered in any order within about 24 hours of each other, within about 16 hours of each other, within about 8 hours of each other, within about 4 hours of each other, within about 1 hour of each other or within about 30 minutes of each other.
More, specifically, a first therapy (e.g., a prophylactic or therapeutic agent such as a compound described herein) can be administered prior to (e.g., 5 minutes, 15 minutes, 30 minutes, 45 minutes, 1 hour, 2 hours, 4 hours, 6 hours, 12 hours, 24 hours, 48 hours, 72 hours, 96 hours, 1 week, 2 weeks, 3 weeks, 4 weeks, 5 weeks, 6 weeks, 8 weeks, or 12 weeks before), concomitantly with, or subsequent to (e.g., 5 minutes, 15 minutes, 30 minutes, 45 minutes, 1 hour, 2 hours, 4 hours, 6 hours, 12 hours, 24 hours, 48 hours, 72 hours, 96 hours, 1 week, 2 weeks, 3 weeks, 4 weeks, 5 weeks, 6 weeks, 8 weeks, or 12 weeks after) the administration of a second therapy (e.g., a prophylactic or therapeutic agent such as an anti-cancer agent) to a subject.
Examples of other therapeutic agents that may be combined with a compound of this disclosure, either administered separately or in the same pharmaceutical composition, include, but are not limited to:
(1) Endothelium-derived releasing factor (EDRF);
(2) NO donors such as a nitrosothiol, a nitrite, a sydnonimine, a NONOate, a N-nitrosoamine, a N-hydroxyl nitrosamine, a nitrosimine, nitrotyrosine, a diazetine dioxide, an oxatriazole 5-imine, an oxime, a hydroxylamine, a N-hydroxyguanidine, a hydroxyurea or a furoxan. Some examples of these types of compounds include: glyceryl trinitrate (also known as GTN, nitroglycerin, nitroglycerine, and trinitrogylcerin), the nitrate ester of glycerol; sodium nitroprusside (SNP), wherein a molecule of nitric oxide is coordinated to iron metal forming a square bipyramidal complex; 3-morpholinosydnonimine (SIN-1), a zwitterionic compound formed by combination of a morpholine and a sydnonimine; S-nitroso-N-acetylpenicillamine (SNAP), an N-acetylated amino acid derivative with a nitrosothiol functional group; diethylenetriamine/NO (DETA/NO), a compound of nitric oxide covalently linked to diethylenetriamine; and NCX 4016, an m-nitroxymethyl phenyl ester of acetyl salicylic acid. More specific examples of some of these classes of NO donors include: the classic nitrovasodilators, such as organic nitrate and nitrite esters, including nitroglycerin, amyl nitrite, isosorbide dinitrate, isosorbide 5-mononitrate, and nicorandil; Isosorbide (Dilatrate®-SR, Imdur®, Ismo®, Isordil®, Isordil®, Titradose®, Monoket®), FK 409 (NOR-3); FR 144420 (NOR-4); 3-morpholinosydnonimine; Linsidomine chlorohydrate (“SIN-1”); S-nitroso-N-acetylpenicillamine (“SNAP”); AZD3582 (CINOD lead compound), NCX 4016, NCX 701, NCX 1022, HCT 1026, NCX 1015, NCX 950, NCX 1000, NCX 1020, AZD 4717, NCX 1510/NCX 1512, NCX 2216, and NCX 4040 (all available from NicOx S.A.), S-nitrosoglutathione (GSNO), Sodium Nitroprusside, S-nitrosoglutathione mono-ethyl-ester (GSNO-ester), 6-(2-hydroxy-1-methyl-nitrosohydrazino)-N-methyl-1-hexanamine (NOC-9) or diethylamine NONOate. Nitric oxide donors are also as disclosed in U.S. Pat. Nos. 5,155,137, 5,366,997, 5,405,919, 5,650,442, 5,700,830, 5,632,981, 6,290,981, 5,691,423 5,721,365, 5,714,511, 6,511,911, and 5,814,666, Chrysselis et al. (2002) J Med Chem. 45:5406-9 (such as NO donors 14 and 17), and Nitric Oxide Donors for Pharmaceutical and Biological Research, Eds: Peng George Wang, Tingwei Bill Cai, Naoyuki Taniguchi, Wiley, 2005;

(3) Other substances that enhance cGMP concentrations such as protoporphyrin IX, arachidonic acid and phenyl hydrazine derivatives;

(4) Nitric Oxide Synthase substrates: for example, n-hydroxyguanidine based analogs, such as N[G]-hydroxy-L-arginine (NOHA), 1-(3,4-dimethoxy-2-chlorobenzylideneamino)-3-hydroxyguanidine, and PR5 (1-(3,4-dimethoxy-2-chlorobenzylideneamino)-3-hydroxyguanidine); L-arginine derivatives (such as homo-Arg, homo-NOHA, N-tert-butyloxy- and N-(3-methyl-2-butenyl)oxy-L-arginine, canavanine, epsilon guanidine-carpoic acid, agmatine, hydroxyl-agmatine, and L-tyrosyl-L-arginine); N-alkyl-N′-hydroxyguanidines (such as N-cyclopropyl-N′-hydroxyguanidine and N-butyl-N′-hydroxyguanidine), N-aryl-N′-hydroxyguanidines (such as N-phenyl-N′-hydroxyguanidine and its para-substituted derivatives which bear —F, —Cl, -methyl, —OH substituents, respectively); guanidine derivatives such as 3-(trifluormethyl) propylguanidine; and others reviewed in Cali et al. (2005, Current Topics in Medicinal Chemistry 5:721-736) and disclosed in the references cited therein;

(5) Compounds which enhance eNOS transcription: for example those described in WO 02/064146, WO 02/064545, WO 02/064546 and WO 02/064565, and corresponding patent documents such as US2003/0008915, US2003/0022935, US2003/0022939 and US2003/0055093. Other eNOS transcriptional enhancers including those described in US20050101599 (e.g. 2,2-difluorobenzo[1,3]dioxol-5-carboxylic acid indan-2-ylamide, and 4-fluoro-N-(indan-2-yl)-benzamide), and Sanofi-Aventis compounds AVE3085 and AVE9488 (CA Registry NO. 916514-70-0; Schäfer et al., Journal of Thrombosis and Homeostasis 2005; Volume 3, Supplement 1: abstract number P1487);

(6) NO independent heme-independent sGC activators, including, but not limited to: BAY 58-2667 (see patent publication DE19943635)





HMR-1766 (ataciguat sodium, see patent publication WO2000002851)





S 3448 (2-(4-chloro-phenylsulfonylamino)-4,5-dimethoxy-N-(4-(thiomorpholine-4-sulfonyl)-phenyl)-benzamide (see patent publications DE19830430 and WO2000002851)





and HMR-1069 (Sanofi-Aventis).

(7) Heme-dependent sGC stimulators including, but not limited to:

YC-1 (see patent publications EP667345 and DE19744026)




BAY 41-2272 (see patent publications DE19834047 and DE19942809)




BAY 41-8543 (see patent publication DE19834044)




BAY 63-2521 (see patent publication DE19834044)
CFM-1571 (see patent publication WO2000027394)




and other compounds disclosed in Tetrahedron Letters (2003), 44(48): 8661-8663.

(8) Compounds that inhibit the degradation of cGMP, such as:

PDE5 inhibitors, such as, for example, Sildenafil (Viagra®) and other related agents such as Avanafil, Lodenafil, Mirodenafil, Sildenafil citrate (Revatio®), Tadalafil (Cialis® or Adcirca®), Vardenafil (Levitra) and Udenafil; Alprostadil; and Dipyridamole;

(9) Calcium channel blockers such as:

Dihydropyridine calcium channel blockers: Amlodipine (Norvasc), Aranidipine (Sapresta), Azelnidipine (Calblock), Barnidipine (HypoCa), Benidipine (Coniel), Cilnidipine (Atelec, Cinalong, Siscard), Clevidipine (Cleviprex), Diltiazem, Efonidipine (Landel), Felodipine (Plendil), Lacidipine (Motens, Lacipil), Lercanidipine (Zanidip), Manidipine (Calslot, Madipine), Nicardipine (Cardene, Carden SR), Nifedipine (Procardia, Adalat), Nilvadipine (Nivadil), Nimodipine (Nimotop), Nisoldipine (Baymycard, Sular, Syscor), Nitrendipine (Cardif, Nitrepin, Baylotensin), Pranidipine (Acalas), Isradipine (Lomir);

Phenylalkylamine calcium channel blockers: Verapamil (Calan, Isoptin)





Gallopamil (Procorum, D600);

Benzothiazepines: Diltiazem (Cardizem);





Nonselective calcium channel inhibitors such as: mibefradil, bepridil and fluspirilene, fendiline;

(10) Endothelin receptor antagonists (ERAs): for instance the dual (ETA and ETB) endothelin receptor antagonist Bosentan (marketed as Tracleer®); Sitaxentan, marketed under the name Thelin®; Ambrisentan is marketed as Letairis® in U.S.; dual/nonselective endothelin antagonist Actelion-1, that entered clinical trials in 2008;

(11) Prostacyclin derivatives or analogues: for instance prostacyclin (prostaglandin I2), Epoprostenol (synthetic prostacyclin, marketed as Flolan®); Treprostinil (Remodulin®), Iloprost (Ilomedin®), Iloprost (marketed as Ventavis®); oral and inhaled forms of Remodulin® that are under development; Beraprost, an oral prostanoid available in Japan and South Korea;

(12) Antihyperlipidemics such as: bile acid sequestrants (e.g., Cholestyramine, Colestipol, Colestilan and Colesevelam); statins such as Atorvastatin, Simvastatin, Lovastatin, Fluvastatin, Pitavastatin, Rosuvastatin and Pravastatin; cholesterol absorption inhibitors such as Ezetimibe; other lipid lowering agents such as Icosapent ethyl ester, Omega-3-acid ethyl esters, Reducol; fibric acid derivatives such as Clofibrate, Bezafibrate, Clinofibrate, Gemfibrozil, Ronifibrate, Binifibrate, Fenofirate, Ciprofibrate, Choline fenofibrate; nicotinic acid derivatives such as Acipimox and Niacin; also combinations of statins, niacin, intestinal cholesterol absorption-inhibiting supplements (ezetimibe and others) and fibrates; antiplatelet therapies such as Clopidogrel bisulfate;

(13) Anticoagulants, such as the following types:

    
    
        Coumarines (Vitamin K antagonists): Warfarin® (Coumadin) mostly used in the US and UK; Acenocoumarol® and Phenprocoumon®, mainly used in other countries; Phenindione®;
        Heparin and derivative substances such as: Heparin; low molecular weight heparin, Fondaparinux and Idraparinux;
        Direct thrombin inhibitors such as: Argatroban, Lepirudin, Bivalirudin and Dabigatran; Ximelagatran (Exanta®), not approved in the US;
        Tissue plasminogen activators, used to dissolve clots and unblock arteries, such as Alteplase;

(14) Antiplatelet drugs: for instance thienopyridines such as Lopidogrel and Ticlopidine; Dipyridamole; Aspirin;

(15) ACE inhibitors, for example the following types:

        Sulfhydryl-containing agents such as Captopril (trade name Capoten®), the first ACE inhibitor and Zofenopril;
        Dicarboxylate-containing agents such as Enalapril (Vasotec/Renitec®); Ramipril (Altace/Tritace/Ramace/Ramiwin®); Quinapril (Accupril®), Perindopril (Coversyl/Aceon®); Lisinopril (Lisodur/Lopril/Novatec/Prinivil/Zestril®) and Benazepril (Lotensin®);
        Phosphonate-containing agents such as: Fosinopril;
        Naturally occurring ACE inhibitors such as: Casokinins and lactokinins, which are breakdown products of casein and whey that occur naturally after ingestion of milk products, especially cultured milk; The Lactotripeptides Val-Pro-Pro and Ile-Pro-Pro produced by the probiotic Lactobacillus helveticus or derived from casein also have ACE-inhibiting and antihypertensive functions;
        Other ACE inhibitors such as Alacepril, Delapril, Cilazapril, Imidapril, Trandolapril, Temocapril, Moexipril, Spirapril,

(16) Supplemental oxygen therapy;

(17) Beta blockers, such as the following types:

        Non-selective agents: Alprenolol®, Bucindolol®, Carteolol®, Carvedilol® (has additional α-blocking activity), Labetalol® (has additional α-blocking activity), Nadolol®, Penbutolol® (has intrinsic sympathomimetic activity), Pindolol® (has intrinsic sympathomimetic activity), Oxprenonol, Acebutolol, Sotalol, Mepindolol, Celiprolol, Arotinolol, Tertatolol, Amosulalol, Nipradilol, Propranolol® and Timolol®;
        β1-Selective agents: Acebutolol® (has intrinsic sympathomimetic activity), Atenolol®, Betaxolol®, Bisoprolol®, Celiprolol®, Dobutamine hydrochloride, Irsogladine maleate, Carvedilol, Talinolol, Esmolol®, Metoprolol® and Nebivolol®;
        β2-Selective agents: Butaxamine® (weak α-adrenergic agonist activity);

(18) Antiarrhythmic agents such as the following types:

        Type I (sodium channel blockers): Quinidine, Lidocaine, Phenytoin, Propafenone
        Type III (potassium channel blockers): Amiodarone, Dofetilide, Sotalol
        Type V: Adenosine, Digoxin

(19) Diuretics such as: Thiazide diuretics, e.g., Chlorothiazide, Chlorthalidone, and Hydrochlorothiazide, Bendroflumethiazide, Cyclopenthiazide, Methyclothiazide, Polythiazide, Quinethazone, Xipamide, Metolazone, Indapamide, Cicletanine; Loop diuretics, such as Furosemide and Toresamide; potassium-sparing diuretics such as Amiloride, Spironolactone, Canrenoate potassium, Eplerenone and Triamterene; combinations of these agents; other diuretics such as Acetazolamid and Carperitide

(20a) Direct acting vasodilators such as Hydralazine hydrochloride, Diazoxide, Sodium nitroprusside, Cadralazine; other vasodilators such as Isosorbide dinitrate and Isosorbide 5-mononitrate;

(20b) Exogenous vasodilators such as:

        Adenocard®, an adenosine agonist, primarily used as an anti-arrhythmic;
        Alpha blockers (which block the vasoconstricting effect of adrenaline):

Alpha-1-adrenoceptor antagonists such as Prazosin, Indoramin, Urapidil, Bunazosin, Terazosin, Doxazosin

        Atrial natriuretic peptide (ANP);
        Ethanol;
        Histamine-inducers, which complement proteins C3a, C4a and C5a work by triggering histamine release from mast cells and basophil granulocytes;
        Tetrahydrocannabinol (THC), major active chemical in marijuana which has minor vasodilatory effects;
        Papaverine, an alkaloid found in the opium poppy papaver somniferum; b

(21) Bronchodilators: there are two major types of bronchodilator, β2 agonists and anticholinergics, exemplified below:

        β2 agonists: Salbutamol® or albuterol (common brand name: Ventolin) and Terbutaline® are short acting β2 agonists for rapid relief of COPD symptoms. Long acting β2 agonists (LABAs) such as Salmeterol® and Formoterol®;
        anticholinergics: Ipratropium® is the most widely prescribed short acting anticholinergic drug. Tiotropium® is the most commonly prescribed long-acting anticholinergic drug in COPD;
        Theophylline®, a bronchodilator and phosphodiesterase inhibitor;

(22) Corticosteroids: such as beclomethasone, methylprednisolone, betamethasone, prednisone, prenisolone, triamcinolone, dexamethasone, fluticasone, flunisolide and hydrocortisone, and corticosteroid analogs such as budesonide

(23) Dietary supplements such as, for example: omega-3 oils; folid acid, niacin, zinc, copper, Korean red ginseng root, ginkgo, pine bark, Tribulus terrestris, arginine, Avena sativa, horny goat weed, maca root, muira puama, saw palmetto, and Swedish flower pollen; Vitamin C, Vitamin E, Vitamin K2; Testosterone supplements, Testosterone transdermal patch; Zoraxel, Naltrexone, Bremelanotide (formerly PT-141), Melanotan II, hMaxi-K; Prelox: a Proprietary mix/combination of naturally occurring ingredients, L-arginine aspartate and Pycnogenol;

(24) PGD2 receptor antagonists including, but not limited to, compounds described as having PGD2 antagonizing activity in United States Published Applications US20020022218, US20010051624, and US20030055077, PCT Published Applications WO9700853, WO9825919, WO03066046, WO03066047, WO03101961, WO03101981, WO04007451, WO0178697, WO04032848, WO03097042, WO03097598, WO03022814, WO03022813, and WO04058164, European Patent Applications EP945450 and EP944614, and those listed in: Torisu et al. 2004 Bioorg Med Chem Lett 14:4557, Torisu et al. 2004 Bioorg Med Chem Lett 2004 14:4891, and Torisu et al. 2004 Bioorg & Med Chem 2004 12:4685;

(25) Immunosuppressants such as cyclosporine (cyclosporine A, Sandimmune® Neoral®), tacrolimus (FK-506, Prograf®), rapamycin (sirolimus, Rapamune®) and other FK-506 type immunosuppressants, and mycophenolate, e.g., mycophenolate mofetil (CellCept®);

(26) Non-steroidal anti-asthmatics such as β2-agonists (e.g., terbutaline, metaproterenol, fenoterol, isoetharine, albuterol, salmeterol, bitolterol and pirbuterol) and β2-agonist-corticosteroid combinations (e.g., salmeterol-fluticasone (Advair®), formoterol-budesonid (Symbicort®)), theophylline, cromolyn, cromolyn sodium, nedocromil, atropine, ipratropium, ipratropium bromide, leukotriene biosynthesis inhibitors (zileuton, BAY1005);

(27) Non-steroidal anti-inflammatory agents (NSAIDs) such as propionic acid derivatives (e.g., alminoprofen, benoxaprofen, bucloxic acid, carprofen, fenbufen, fenoprofen, fluprofen, flurbiprofen, ibuprofen, indoprofen, ketoprofen, miroprofen, naproxen, oxaprozin, pirprofen, pranoprofen, suprofen, tiaprofenic acid and tioxaprofen), acetic acid derivatives (e.g., indomethacin, acemetacin, alclofenac, clidanac, diclofenac, fenclofenac, fenclozic acid, fentiazac, furofenac, ibufenac, isoxepac, oxpinac, sulindac, tiopinac, tolmetin, zidometacin and zomepirac), fenamic acid derivatives (e.g., flufenamic acid, meclofenamic acid, mefenamic acid, niflumic acid and tolfenamic acid), biphenylcarboxylic acid derivatives (e.g., diflunisal and flufenisal), oxicams (e.g., isoxicam, piroxicam, sudoxicam and tenoxican), salicylates (e.g., acetyl salicylic acid and sulfasalazine) and the pyrazolones (e.g., apazone, bezpiperylon, feprazone, mofebutazone, oxyphenbutazone and phenylbutazone);

(28) Cyclooxygenase-2 (COX-2) inhibitors such as celecoxib (Celebrex®), rofecoxib (Vioxx®), valdecoxib, etoricoxib, parecoxib and lumiracoxib; (opioid analgesics such as codeine, fentanyl, hydromorphone, levorphanol, meperidine, methadone, morphine, oxycodone, oxymorphone, propoxyphene, buprenorphine, butorphanol, dezocine, nalbuphine and pentazocine; and

(29) Anti-diabetic agents such as insulin and insulin mimetics, sulfonylureas (e.g., Glyburide, Glybenclamide, Glipizide, Gliclazide, Gliquidone, Glimepiride, Meglinatide, Tolbutamide, Chlorpropamide, Acetohexamide, Tolazamide), biguanides, e.g., metformin (Glucophage®), α-glucosidase inhibitors (such as Acarbose, Epalrestat, Voglibose, Miglitol), thiazolidinone compounds, e.g., rosiglitazone (Avandia®), troglitazone (Rezulin®), ciglitazone, pioglitazone (Actos®) and englitazone; insulin sensitizers such as Pioglitazone and Rosiglitazone; Insulin secretagogues such as Repaglinide, Nateglinide and Mitiglinide; Incretin mimetics such as Exanatide and Liraglutide; Amylin analogues such as Pramlintide; glucose lowering agents such as Chromiumm picolinate (optinally combined with biotin); dipeptidyl peptidase IV inhibitors such as Sitagliptin, Vildagliptin, Saxagliptin, Alogliptin and Linagliptin; vaccines currently being developed for the treatment of diabetes; AVE-0277, Alum-GAD, BHT-3021, IBC-VS01; cytokine targeted therapies in development for the treatment of diabetes such as Anakinra, Canakinumab, Diacerein, Gevokizumab, LY-2189102, MABP-1, GIT-027; drugs in development for the treatment of diabetes:

    
    












Drugs in development for the treatment of diabetes












Mechanism of



Drug Name
Organization
Action
Status





Dapagliflozin
AstraZeneca/Bristol-
SGLT-2 Inhibitors
Recommended



Myers Squibb

Approval


Alogliptin
Takeda
Insulin Sensitizers/
Pre-Registered


benzoate/metformin

Dipeptidyl Peptidase


hydrochloride

IV (CD26; DPP-IV;




DP-IV) Inhibitors


Anagliptin
Kowa/Sanwa
Dipeptidyl Peptidase
Pre-Registered




IV (CD26; DPP-IV;




DP-IV) Inhibitors


Insulin degludec
Novo Nordisk

Pre-Registered


Insulin degludec/insulin
Novo Nordisk

Pre-Registered


aspart


Insulin human (rDNA
MannKind

Pre-Registered


origin) inhalation powder


Lixisenatide
Sanofi
Insulin
Pre-Registered




Secretagogues/GLP-




1 Receptor Agonists


Recombinant human
Biodel

Pre-Registered


insulin


Teneligliptin
Mitsubishi Tanabe
Dipeptidyl Peptidase
Pre-Registered



Pharma
IV (CD26; DPP-IV;




DP-IV) Inhibitors


AVE-0277
Andromeda Biotech/

Phase III



Teva


Albiglutide
GlaxoSmithKline
GLP-1 Receptor
Phase III




Agonists


Aleglitazar
Roche
PPARalpha Agonists/
Phase III




PPARgamma




Agonists


Atorvastatin
GlaxoSmithKline
K(ATP) Channel
Phase III


calcium/glimepiride

Blockers/Dipeptidyl




Peptidase IV (CD26;




DPP-IV; DP-IV)




Inhibitors/HMG-CoA




Reductase Inhibitors/




TNFSF6 Expression




Inhibitors


BYK-324677
Nycomed

Phase III


Balaglitazone
Dr. Reddy's
Insulin Sensitizers/
Phase III



Laboratories
PPARgamma Partial




Agonists


CSG-452
Chugai
SGLT-2 Inhibitors
Phase III



Pharmaceutical


Canagliflozin
Johnson & Johnson/
SGLT-2 Inhibitors
Phase III



Mitsubishi Tanabe



Pharma


Canagliflozin/metformin
Johnson & Johnson
SGLT-2 Inhibitors/
Phase III


hydrochloride

Insulin Sensitizers


Dapagliflozin/Metformin
AstraZeneca/Bristol-
SGLT-2 Inhibitors/
Phase III


hydrochloride
Myers Squibb
Insulin Sensitizers


Dulaglutide
Lilly
Insulin
Phase III




Secretagogues/GLP-1




Receptor Agonists


Empagliflozin
Boehringer Ingelheim/
SGLT-2 Inhibitors
Phase III



Lilly


Empagliflozin/linagliptin
Boehringer Ingelheim/
SGLT-2 Inhibitors/
Phase III



Lilly
Dipeptidyl Peptidase




IV (CD26; DPP-IV;




DP-IV) Inhibitors


Gemigliptin
LG Life Sciences
Dipeptidyl Peptidase
Phase III




IV (CD26; DPP-IV;




DP-IV) Inhibitors


Hepatic-directed vesicle
Diasome

Phase III


insulin
Pharmaceuticals


Human isophane insulin
Wockhardt

Phase III


IN-105
Biocon

Phase III


Insulin
Novo Nordisk
Insulin
Phase III


degludec/liraglutide

Secretagogues/GLP-1




Receptor Agonists


Insulin glargine
Sanofi

Phase III


Ipragliflozin L-proline
Astellas Pharma/
SGLT-2 Inhibitors
Phase III



Kotobuki


LY-2605541
Lilly

Phase III


LY-2963016
Lilly

Phase III


Lixisenatide/Insulin
Sanofi
Insulin
Phase III


glargine

Secretagogues/GLP-1




Receptor Agonists


Lobeglitazone sulfate
Chong Kun Dang
PPARalpha Agonists/
Phase III



Pharm (CKD Pharm)
PPARgamma




Agonists/Insulin




Sensitizers


Luseogliflozin
Taisho
SGLT-2 Inhibitors
Phase III


Otelixizumab
Tolerx
Anti-CD3
Phase III


Ranolazine
Gilead
Sodium Channel
Phase III




Blockers


Recombinant human
National Institute of

Phase III


insulin
Health Sciences


Sitagliptin phosphate
Merck & Co.
PPARgamma
Phase III


monohydrate/pioglitazone

Agonists/Insulin


hydrochloride

Sensitizers/




Dipeptidyl Peptidase




IV (CD26; DPP-IV;




DP-IV) Inhibitors


Sitagliptin/atorvastatin
Merck & Co.
Dipeptidyl Peptidase
Phase III


calcium

IV (CD26; DPP-IV;




DP-IV) Inhibitors/




HMG-CoA Reductase




Inhibitors/TNFSF6




Expression Inhibitors


TAK-875
Takeda
Free Fatty Acid
Phase III




Receptor 1 (FFAR1;




GPR40) Agonists/




Insulin




Secretagogues


TT-401
7TM Pharma
Cannabinoid CB1
Phase I




Antagonists


TT-401
Transition

Phase I



Therapeutics


ZYH-2
Cadila Healthcare
PPARalpha Ligands/
Phase I



(d/b/a Zydus Cadila)
PPARgamma Ligands


ZYO-1
Cadila Healthcare
Cannabinoid CB1
Phase I



(d/b/a Zydus Cadila)
Antagonists


701645
Cellonis

Phase I



Biotechnologies


701499
Cellonis

Phase I



Biotechnologies


743300
University of

Phase I



California, San



Francisco


448661
University of

Phase I



Pittsburgh


AD-1
National Institute

Clinical



Pharma Res Dev


Colesevelam
Daiichi Sankyo
Bile Acid
Clinical


hydrochloride

Sequestrants


DBPR-108
National Health

IND Filed



Research Institutes/



ScinoPharm


Nodlin
Biolaxy

IND Filed


PSN-491
Prosidion
Glucose-Dependent
IND Filed




Insulinotropic




Receptor (GDIR,




GPR119) Agonists/




Dipeptidyl Peptidase




IV (CD26; DPP-IV;




DP-IV) Inhibitors


Tolimidone
Melior Discovery
Lyn Kinase Activators
IND Filed


ZYD-1
Cadila Healthcare
GLP-1 Receptor
IND Filed



(d/b/a Zydus Cadila)
Agonists


ZYOG-1
Cadila Healthcare
GLP-1 Receptor
IND Filed



(d/b/a Zydus Cadila)
Agonists









(30) HDL cholesterol-increasing agents such as Anacetrapib, MK-524A, CER-001, DRL-17822, Dalcetrapib, JTT-302, RVX-000222, TA-8995;

(31) Antiobesity drugs such as Methamphetamine hydrochloride, Amfepramone hydrochloride (Tenuate®), Phentermine (Ionamin®), Benzfetamine hydrochloride (Didrex®), Phendimetrazine tartrate (Bontril®, Prelu-2 ®, Plegine®), Mazindol (Sanorex®), Orlistat (Xenical®), Sibutramine hydrochloride monohydrate (Meridia®, Reductil®), Rimonabant (Acomplia®), Amfepramone, Chromium picolinate, RM-493, TZP-301; combination such as Phentermine/Topiramate, Bupropion/Naltrexone, Sibutramine/Metformin, Bupropion SR/Zonisamide SR, Salmeterol, xinafoate/fluticasone propionate; Lorcaserin hydrochloride, Phentermine/topiramate, Bupropion/naltrexone, Cetilistat, Exenatide, KI-0803, Liraglutide, Metformin hydrochloride, Sibutramine/Metformin, 876167, ALS-L-1023, Bupropion SR/Zonisamide SR, CORT-108297, Canagliflozin, Chromium picolinate, GSK-1521498, LY-377604, Metreleptin, Obinepitide, P-57AS3, PSN-821, Salmeterol xinafoate/fluticasone propionate, Sodium tungstate, Somatropin (recombinant), TM-30339, TTP-435, Tesamorelin, Tesofensine, Velneperit, Zonisamide, BMS-830216, ALB-127158, AP-1030, ATHX-105, AZD-2820, AZD-8329, Beloranib hemioxalate, CP-404, HPP-404, ISIS-FGFR4Rx, Insulinotropin, KD-3010PF, 05212389, PP-1420, PSN-842, Peptide YY3-36, Resveratrol, S-234462; S-234462, Sobetirome, TM-38837, Tetrahydrocannabivarin, ZYO-1, beta-Lapachone;

(32) Angiotensin receptor blockers such as Losartan, Valsartan, Candesartan cilexetil, Eprosaran, Irbesartan, Telmisartan, Olmesartran medoxomil, Azilsartan medoxomil;

(33) Renin inhibitors such as Aliskiren hemifumirate;

(34) Centrally acting alpha-2-adrenoceptor agonists such as Methyldopa, Clonidine, Guanfacine;

(35) Adrenergic neuron blockers such as Guanethidine, Guanadrel;

(36) Imidazoline I-1 receptor agonists such as Rimenidine dihydrogen phosphate and Moxonidine hydrochloride hydrate;

(37) Aldosterone antagonists such as Spironolactone and Eplerenone

(38) Potassium channel activators such as Pinacidil

(39) Dopamine D1 agonists such as Fenoldopam mesilate; Other dopamine agonists such as Ibopamine, Dopexamine and Docarpamine;

(40) 5-HT2 antagonists such as Ketanserin;

(41) Drugs that are currently being developed for the treatment of arterial hypertension:
















Mechanism of



Drug Name
Organization
Action
Status







Azilsartan
Takeda
Angiotensin AT1
Registered




Antagonists/




Angiotensin AT2




Antagonists/




Insulin




Sensitizers


Amlodipine besylate/irbesartan
Dainippon Sumitomo
Angiotensin AT1
Pre-Registered



Pharma
Antagonists/




Calcium Channel




Blockers


Azilsartan/amlodipine besilate
Takeda
Angiotensin AT1
Phase III




Antagonists/




Insulin




Sensitizers/




Calcium Channel




Blockers


Cilnidipine/valsartan
Ajinomoto/Mochida
Angiotensin AT1
Phase III




Antagonists/




Calcium Channel




Blockers


Fimasartan
Boryung
Angiotensin AT1
Phase III




Antagonists


Irbesartan/atorvastatin
Hanmi
Angiotensin AT1
Phase III




Antagonists/




Dipeptidyl




Peptidase IV




(CD26; DPP-IV;




DP-IV)




Inhibitors/HMG-




CoA Reductase




Inhibitors/




TNFSF6




Expression




Inhibitors


Irbesartan/trichlormethiazide
Shionogi
Angiotensin AT1
Phase III




Antagonists


Losartan
Merck & Co.
Angiotensin AT1
Phase III


potassium/hydrochlorothiazide/

Antagonists/


amlodipine besylate

Calcium Channel




Blockers


Pratosartan
Boryung
Angiotensin AT1
Phase III




Antagonists


ACT-280778
Actelion

Phase II


Amiloride
Hemodynamic
Mineralocorticoid
Phase II


hydrochloride/spironolactone
Therapeutics
Receptor (MR)




Antagonists/




Na+/H+




Exchanger (NHE)




Inhibitors/




Epithelial Sodium




Channels (ENaC)




Blockers/




K(V)1.5 Channel




Blockers/




K(V)4.3 Channel




Blockers


Angiotensin vaccine/CoVaccine HT
BTG

Phase II


CYT006-AngQb
Cytos Biotechnology
Anti-Angiotensin
Phase II




II


Cholecalciferol
Emory University

Phase II


Cobiprostone
Sucampo
CIC-2 Channel
Phase II



Pharmaceuticals
Activators


INT-001
IntelGenx

Phase II


LCZ-696
Novartis
Angiotensin AT1
Phase II




Antagonists/




Neprilysin




(Enkephalinase,




Neutral




Endopeptidase,




NEP) Inhibitors


LFF-269
Novartis

Phase II


Octreotide acetate
Chiasma
Growth Hormone
Phase II




Release




Inhibitors/




Somatostatin




Agonists


PL-3994
Palatin Technologies
Atrial Natriuretic
Phase II




Peptide A (NPR1;




Guanylate




Cyclase A)




Receptor




Agonists


Rostafuroxine
Sigma-Tau

Phase II


SLx-2101
NT Life Sciences
Phosphodiesterase
Phase II




V (PDE5A)




Inhibitors


TBC-3711
Encysive
Endothelin ETA
Phase II



Pharmaceuticals
Receptor




Antagonists


Udenafil
Dong-A/Falk Pharma
Phosphodiesterase
Phase II




V (PDE5A)




Inhibitors


Atorvastatin calcium/losartan
HanAll BioPharma
Angiotensin AT1
Phase I


potassium

Antagonists/




Dipeptidyl




Peptidase IV




(CD26; DPP-IV;




DP-IV)




Inhibitors/HMG-




CoA Reductase




Inhibitors/




TNFSF6




Expression




Inhibitors


BIA-5-1058
BIAL
Dopamine beta-
Phase I




monooxygenase




Inhibitors


CS-3150
Daiichi Sankyo

Phase I


DSP-9599
Dainippon Sumitomo
Renin Inhibitors
Phase I



Pharma


MK-1597
Actelion/Merck & Co.
Renin Inhibitors
Phase I


MK-4618
Merck & Co.

Phase I


MK-5478
Merck & Co.

Phase I


MK-7145
Merck & Co.

Phase I


MK-8266
Merck & Co.

Phase I


MK-8457
Merck & Co.

Phase I


MP-157
Mitsubishi Tanabe
Angiotensin AT2
Phase I



Pharma
Agonists


MT-3995
Mitsubishi Tanabe
Mineralocorticoid
Phase I



Pharma
Receptor (MR)




Antagonists


Mirodenafil hydrochloride
SK Chemicals
Phosphodiesterase
Phase I




V (PDE5A)




Inhibitors


NV-04
Novogen
Antioxidants
Phase I


Nifedipine/Candesartan cilexetil
Bayer
Angiotensin AT1
Phase I




Antagonists/




Calcium Channel




Blockers/




Antioxidants


QGC-001
Quantum Genomics
Glutamyl
Phase I




Aminopeptidase




(Aminopeptidase




A) Inhibitors


RDX-5791
Ardelyx
Na+/H+
Phase I




Exchanger type




3 (NHE-3)




Inhibitors


TAK-272
Takeda
Renin Inhibitors
Phase I


TAK-591
Takeda
Angiotensin AT2
Phase I




Antagonists


VTP-27999
Vitae Pharmaceuticals
Renin Inhibitors
Phase I


Vasomera
PhaseBio
VPAC2 (VIP2)
Phase I




Agonists


Tylerdipine hydrochloride
Sihuan
Calcium Channel
IND Filed



Pharmaceutical
Blockers









(42) Vasopressin antagonists such as Tolvaptan;

(43) Calcium channel sensitizers such as Levosimendan or activators such as Nicorandil;

(44) PDE-3 inhibitors such as Amrinone, Milrinone, Enoximone, Vesnarinone, Pimobendan, Olprinone;

(45) Adenylate cyclase activators such as Colforsin dapropate hydrochloride;

(46) Positive inotropic agents such as Digoxin and Metildigoxin; metabolic cardiotonic agents such as Ubidecarenone; brain naturetic peptides such as Nesiritide;

(47) Drugs that are currently in development for the treatment of heart failure:











Drugs in development for the treatment of heart failure












Mechanism of



Drug Name
Organization
Action
Status





Bucindolol
ARCA
beta-Adrenoceptor
Pre-


hydrochloride

Antagonists
Registered


Aliskiren
Novartis
Renin Inhibitors
Phase III


hemifumarate


Ferric
Vifor

Phase III


carboxymaltose


LCZ-696
Novartis
Angiotensin AT1
Phase III




Antagonists/




Neprilysin




(Enkephalinase,




Neutral




Endopeptidase,




NEP) Inhibitors


Neuregulin-1
Zensun

Phase III


Olmesartan
Tohoku University
Angiotensin AT1
Phase III


medoxomil

Antagonists


C3BS-CQR-1
Cardio3

Phase II/III



BioSciences


MyoCell
Bioheart

Phase II/III


Serelaxin
Novartis

Phase II/III


AAV1/
AmpliPhi

Phase II


SERCA2a
Biosciences/



Celladon/Mount



Sinai School of



Medicine


Albiglutide
GlaxoSmithKline
GLP-1 Receptor
Phase II




Agonists


Allogeneic
Mesoblast

Phase II


mesenchymal


precursor cells


AlsterMACS
Miltenyi Biotec

Phase II


BAY-94-8862
Bayer
Mineralocorticoid
Phase II




Receptor (MR)




Antagonists


COR-1
Corimmun

Phase II


CXL-1020
Cardioxyl
Nitric Oxide
Phase II



Pharmaceuticals
Donors


Cenderitide
Nile Therapeutics
Guanylate
Phase II




Cyclase




Activators


Endometrial
ERCell/Medistem

Phase II


regenerative


cells


JNJ-39588146
Johnson & Johnson

Phase II


Omecamtiv
Amgen/Cytokinetics
Cardiac Myosin
Phase II


mecarbil

Activators


PL-3994
Palatin
Atrial Natriuretic
Phase II



Technologies
Peptide A (NPR1;




Guanylate Cyclase




A) Receptor




Agonists


Remestemcel-L
Osiris

Phase II


TRV-120027
Trevena
Angiotensin AT1
Phase II




Receptor Ligands


Urocortin 2
Neurocrine
CRF2 Agonists
Phase II



Biosciences


AAV6-CMV-
Imperial College

Phase I/II


SERCA2a


Anakinra
National Institutes
IL-1 Receptor
Phase I/II



of Health (NIH)
Antagonists


LipiCell
Bioheart/Institute

Phase I/II



de Medicina



Regenerativa


ALD-201
Cytomedix/Texas

Phase I



Heart Institute


BAY-1021189
Bayer

Phase I


BAY-1067197
Bayer
Adenine Receptor
Phase I




Agonists


BAY-86-8050
Bayer
Drugs Acting on
Phase I




Vasopressin




(AVP) Receptors


BIA-5-1058
BIAL
Dopamine beta-
Phase I




monooxygenase




Inhibitors


CSCs
University of

Phase I



Louisville


Calcitonin gene
VasoGenix

Phase I


related peptide


JVS-100
Juventas

Phase I



Therapeutics


MyoCell SDF-
Bioheart

Phase I


1


Myoblast
Advanced Cell

Phase I



Technology (ACT)


RO-1160367
Serodus
5-HT4
Phase I




Antagonists


Recombinant
Acorda/Vanderbilt

Phase I


human glial
University


growth factor 2


[18F]LMI-
Lantheus Medical

Phase I


1195
Imaging


677950
Kyoto Prefectural

Phase I



University of



Medicine









(48) Drugs currently in development for the treatment of pulmonary hypertension:











Drugs in development for the treatment of pulmonary hypertension












Mechanism of



Drug Name
Organization
Action
Status





Imatinib
Novartis
Breast Cancer-Resistant Protein (BCRP;
Pre-Registered


mesylate

ABCG2) Inhibitors/Abl Kinase Inhibitors/




Angiogenesis Inhibitors/Bcr-Abl Kinase




Inhibitors/CSF1R (c-FMS) Inhibitors/KIT




(C-KIT) Inhibitors/Apoptosis Inducers/




PDGFRalpha Inhibitors/PDGFRbeta




Inhibitors/Inhibitors of Signal




Transduction Pathways


Treprostinil
United
Prostacyclin Analogs
Pre-Registered


diethanolamine
Therapeutics


GSK-1325760A
GlaxoSmithKline

Phase III


Macitentan
Actelion
Endothelin ETA Receptor Antagonists/
Phase III




Endothelin ETB Receptor Antagonists


Riociguat
Bayer
Guanylate Cyclase Activators
Phase III


Selexipag
Actelion/Nippon
Prostanoid IP Agonists
Phase III



Shinyaku


Udenafil
Dong-A
Phosphodiesterase V (PDE5A) Inhibitors
Phase III


L-Citrulline
Nat Heart, Lung,

Phase II/III



and Blood



Institute/



Vanderbilt



University


BQ-123
Brigham &
Endothelin ETA Receptor Antagonists
Phase II



Women's



Hospital


Cicletanine
Gilead

Phase II


Fasudil
Asahi Kasei
Rho Kinase Inhibitors/Calcium
Phase II


hydrochloride

Sensitizers


Nilotinib
Novartis
Bcr-Abl Kinase Inhibitors/Apoptosis
Phase II


hydrochloride

Inducers/Inhibitors of Signal


monohydrate

Transduction Pathways


PRX-08066
Clinical Data
5-HT2B Antagonists
Phase II


Terguride
ErgoNex
5-HT2A Antagonists/5-HT2B
Phase II



Pharma
Antagonists/Dopamine Autoreceptor




Agonists/Dopamine D2 Receptor Partial




Agonists/Prolactin Secretion Inhibitors


Tezosentan
Actelion
Endothelin ETA Receptor Antagonists/
Phase II


disodium

Endothelin ETB Receptor Antagonists


Anakinra
Virginia
IL-1 Receptor Antagonists
Phase I/II



Commonwealth



University



(VCU)


Simvastatin
Imperial College
HDL-Cholesterol Increasing Agents/
Phase I/II




HMG-CoA Reductase Inhibitors


99mTC-
Montreal Heart

Phase I


PulmoBind
Institute (MHI)


APD-811
Arena
Prostanoid IP Agonists
Phase I


Sorafenib
Bayer
Raf kinase B Inhibitors/Raf kinase C
Phase I




Inhibitors/Angiogenesis Inhibitors/Flt3




(FLK2/STK1) Inhibitors/VEGFR-1 (Flt-1)




Inhibitors/KIT (C-KIT) Inhibitors/




VEGFR-2 (FLK-1/KDR) Inhibitors/VEGFR-




3 (FLT4) Inhibitors/PDGFRbeta




Inhibitors/RET Inhibitors/Inhibitors of




Signal Transduction Pathways


Triplelastat
Proteo Biotech
Elastase Inhibitors
Phase I


2586881
Apeiron

Preclinical



Biologies


C-122
Corridor
Caspase 3 Activators/Dopamine D1
Preclinical



Pharmaceuticals
Antagonists/5-HT2B Antagonists/5-HT7




Antagonists/Caspase 8 Activators/




Dopamine D2 Antagonists/Dopamine D3




Antagonists/Histamine H1 Receptor




Antagonists/Caspase 9 Activators/




Apoptosis Inducers


PLX-I
United
Angiogenesis Inducers
Preclinical



Therapeutics









(49) Drugs in current development for the treatment of female sexual dysfunction:











Drugs in active development for the treatment


of female sexual dysfunction












Mechanism of



Drug Name
Organization
Action
Status





Alprostadil
Apricus

Phase III



Biosciences/



VIVUS


Prasterone
EndoCeutics/
HSD11B1
Phase III



Monash
Expression



University
Inhibitors


Testosterone
BioSante
Androgen
Phase III


transdermal gel

Receptor




Agonists


Bremelanotide
Palatin
Melanocortin
Phase II



Technologies
MC3 Receptor




Agonists/




Melanocortin




MC4 Receptor




Agonists


Pill-Plus
Pantarhei

Phase II



Bioscience


Testosterone MDTS
Acrux
Androgen
Phase II




Receptor




Agonists


Estradiol/testosterone
BioSante
Estrogen
Phase I




Receptor (ER)




Agonists/




Androgen




Receptor




Agonists


LGD-2941
Ligand
Selective
Phase I




Androgen




Receptor




Modulators




(SARM)


Lidocaine/heparin
Urigen

Phase I


OnabotulinumtoxinA
Allergan

Phase I


S1P-104
S1 Biopharma

IND Filed


PL-6983
Palatin

Preclinical



Technologies


S1P-401
S1 Biopharma

Preclinical









(50) Drugs used for the treatment of erectile dysfunction such as Alprostadil, Aviptadil, Phentolamine mesilate, Weige, Alprostadil;

(51) Drugs currently in development for the treatment of male sexual dysfunction:











Drugs in active development for the


treatment of erectile dysfunction












Mechanism of



Drug Name
Organization
Action
Status





Fluvastatin
Novartis
Apoptosis
Phase III


sodium

Inducers/HMG-




CoA Reductase




Inhibitors


Lodenafil
Cristalia
Phosphodiesterase
Phase III


carbonate

V (PDE5A)




Inhibitors


EFLA-400
Chonbuk

Phase II/III



National



University



Hospital


Apomorphine
Vectura
Dopamine D2
Phase II


hydrochloride

Agonists


LY-900010
Lilly
Phosphodiesterase
Phase II




V (PDE5A)




Inhibitors/




Selective




Androgen




Receptor




Modulators




(SARM)


Nitroglycerin
Futura Medical

Phase II


RX-10100
Rexahn
Drugs Acting on
Phase II




Dopaminergic




Transmission/




Drugs Acting on




Serotonergic




Transmission


YHD-1023
Yuhan

Phase II


INT-007
IntelGenx

Phase I


LY-2452473
Lilly
Selective
Phase I




Androgen




Receptor




Modulators




(SARM)


hMaxi-K
Albert Einstein

Phase I



College of



Medicine/Ion



Channel



Innovations/



Mount Sinai



School of



Medicine


KH-204
KMSI

Clinical


CKD-533
Chong Kun Dang
Phosphodiesterase
Preclinical



Pharm (CKD
V (PDE5A)



Pharm)
Inhibitors


MP-52
Biopharm

Preclinical


TGHW01AP
Fabre-Kramer
Dopamine D1
Preclinical




Agonists/




Dopamine D2




Agonists









(51) Drugs in development for the treatment of sleep apnea:











Drugs in development for the treatment of sleep apnea












Mechanism of



Drug Name
Organization
Action
Status





CX-1739
Cortex
AMPA Receptor
Phase II




Modulators


Phentermine/topiramate
VIVUS
AMPA
Phase II




Antagonists/




Kainate




Antagonists/




Sodium Channel




Blockers/




Carbonic




Anhydrase Type




II Inhibitors


AVE-0118
Sanofi
Potassium
Phase I




Channel




Blockers


Suvorexant
Merck & Co.
Orexin Receptor
Phase I




Antagonists


COL-132
Collegium

Clinical



Pharmaceutical









(52) Drugs currently in development for the treatment of metabolic syndrome:











Antiobesity drugs under active development for the


treatment of patients with metabolic syndrome












Mechanism of



Drug Name
Organization
Action
Status





Chromium
University of

Phase II


picolinate
Pennsylvania


RM-493
Ipsen
Melanocortin MC4
Preclinical




Receptor Agonists


TZP-301
Tranzyme
GHS Receptor
Preclinical




Antagonists



















Antihyperlipidemic drugs under active development for


the treatment of patients with metabolic syndrome












Mechanism of



Drug Name
Organization
Action
Status





GFT-505
Genfit
PPARalpha
Phase II




Agonists/




PPARdelta




Agonists


MBX-8025
Metabolex
PPARdelta
Phase II




Agonists


Pitavastatin
Kowa
APOA1
Phase I


calcium

Expression




Enhancers/




HMG-CoA




Reductase




Inhibitors/




SPP1




(Osteopontin)




Expression




Inhibitors


CDX-085
Cardax
Antioxidants
Preclinical



Pharmaceuticals









(53) Antiobesity drugs:











Drugs marketed for the treatment of obesity













Year and



Orga-
Mechanism of
country of


Drug Name
nization
Action
first launch





Methamphetamine
Abbott
Noradrenergic, alpha-
1943 (U.S.)


hydrochloride

and beta-


(Desoxyn)

adrenoceptor agonist


Amfepramone
Sanofi
Noradrenergic release
1959 (U.S.)


hydrochloride

stimulant


(Tenuate)


Phentermine
UCB
Noradrenergic release
1959 (U.S.)


(Ionamin)
Celltech
stimulant


Benzfetamine
Pfizer
Noradrenergic release
1960 (U.S.)


hydrochloride

stimulant


(Didrex)


Phendimetrazine
Pfizer
Noradrenergic release
1961 (U.S.)


tartrate (Bontril,

stimulant


Prelu-2, Plegine)


Mazindol (Sanorex)
Novartis
Noradrenergic
1973 (U.S.)




reuptake inhibitor


Orlistat (Xenical)
Roche
Pancreatic lipase
1998




inhibitor
(New Zealand)


Sibutramine
Abbott
Norepinephrine and 5-
1998 (U.S.)


hydrochloride

HT reuptake inhibitor
(withdrawn


monohydrate


2010)


(Meridia, Reductil)


Rimonabant
Sanofi
Cannabinoid CB1
2006 (U.K.)


(Acomplia)

antagonist
(withdrawn





2008)









Kits

The compounds and pharmaceutical formulations described herein may be contained in a kit. The kit may include single or multiple doses of two or more agents, each packaged or formulated individually, or single or multiple doses of two or more agents packaged or formulated in combination. Thus, one or more agents can be present in first container, and the kit can optionally include one or more agents in a second container. The container or containers are placed within a package, and the package can optionally include administration or dosage instructions. A kit can include additional components such as syringes or other means for administering the agents as well as diluents or other means for formulation. Thus, the kits can comprise: a) a pharmaceutical composition comprising a compound described herein and a pharmaceutically acceptable carrier, vehicle or diluent; and b) a container or packaging. The kits may optionally comprise instructions describing a method of using the pharmaceutical compositions in one or more of the methods described herein (e.g. preventing or treating one or more of the diseases and disorders described herein). The kit may optionally comprise a second pharmaceutical composition comprising one or more additional agents described herein for co therapy use, a pharmaceutically acceptable carrier, vehicle or diluent. The pharmaceutical composition comprising the compound described herein and the second pharmaceutical composition contained in the kit may be optionally combined in the same pharmaceutical composition.
A kit includes a container or packaging for containing the pharmaceutical compositions and may also include divided containers such as a divided bottle or a divided foil packet. The container can be, for example a paper or cardboard box, a glass or plastic bottle or jar, a re-sealable bag (for example, to hold a “refill” of tablets for placement into a different container), or a blister pack with individual doses for pressing out of the pack according to a therapeutic schedule. It is feasible that more than one container can be used together in a single package to market a single dosage form. For example, tablets may be contained in a bottle which is in turn contained within a box.
An example of a kit is a so-called blister pack. Blister packs are well known in the packaging industry and are being widely used for the packaging of pharmaceutical unit dosage forms (tablets, capsules, and the like). Blister packs generally consist of a sheet of relatively stiff material covered with a foil of a preferably transparent plastic material. During the packaging process, recesses are formed in the plastic foil. The recesses have the size and shape of individual tablets or capsules to be packed or may have the size and shape to accommodate multiple tablets and/or capsules to be packed. Next, the tablets or capsules are placed in the recesses accordingly and the sheet of relatively stiff material is sealed against the plastic foil at the face of the foil which is opposite from the direction in which the recesses were formed. As a result, the tablets or capsules are individually sealed or collectively sealed, as desired, in the recesses between the plastic foil and the sheet. Preferably the strength of the sheet is such that the tablets or capsules can be removed from the blister pack by manually applying pressure on the recesses whereby an opening is formed in the sheet at the place of the recess. The tablet or capsule can then be removed via said opening.
It may be desirable to provide written memory aid containing information and/or instructions for the physician, pharmacist or subject regarding when the medication is to be taken. A “daily dose” can be a single tablet or capsule or several tablets or capsules to be taken on a given day. When the kit contains separate compositions, a daily dose of one or more compositions of the kit can consist of one tablet or capsule while a daily dose of another or more compositions of the kit can consist of several tablets or capsules. A kit can take the form of a dispenser designed to dispense the daily doses one at a time in the order of their intended use. The dispenser can be equipped with a memory-aid, so as to further facilitate compliance with the regimen. An example of such a memory-aid is a mechanical counter which indicates the number of daily doses that have been dispensed. Another example of such a memory-aid is a battery-powered micro-chip memory coupled with a liquid crystal readout, or audible reminder signal which, for example, reads out the date that the last daily dose has been taken and/or reminds one when the next dose is to be taken.
EXAMPLES
All references provided in the Examples are herein incorporated by reference. As used herein, all abbreviations, symbols and conventions are consistent with those used in the contemporary scientific literature. See, e.g. Janet S. Dodd, ed., The ACS Style Guide: A Manual for Authors and Editors, 2nd Ed., Washington, D.C.: American Chemical Society, 1997, herein incorporated in its entirety by reference.
Example 1
Syntheses of the Compounds of Table 1
General Procedure A




General Procedure A
Step 1: Dione Enolate Formation:
To a solution of ketone A in THF cooled to −78° C., LiHMDS (e.g., 0.9 eq, 1.0 M in toluene) is added dropwise, for example using a syringe. The reaction mixture is then allowed to warm to about 0° C., then charged with diethyl oxalate (1.2 eq). At this time, the reaction mixture is warmed to room temperature and stirred at that temperature until judged complete (e.g., using either TLC or LC/MS analysis). Once the reaction is complete (reaction time typically about 45 minutes), the product dione enolate B is used as-is in Step 2, i.e., the cyclization step, without any further purification.
Step 2: Pyrazole Formation:
Dione enolate B is diluted with ethanol and consecutively charged with HCl (e.g., 3 eq, 1.25M solution in ethanol) and arylhydrazine hydrate (e.g., 1.15 eq). The reaction mixture is heated to about 70° C. and stirred at this temperature until cyclization is deemed complete (e.g., by LC/MS analysis, typically about 30 minutes). Once complete, the reaction mixture is treated carefully with solid sodium bicarbonate (e.g., 4 eq) and diluted with dichloromethane and water. The organic layer is separated, and the aqueous layer is further diluted with water before extraction with dichloromethane (3 times). The combined organics are washed with brine, dried over MgSO4, filtered, and concentrated in vacuo. The resulting pyrazole C is then purified by SiO2 chromatography using an appropriate gradient of EtOAc/hexanes.
Step 3: Amidine Formation:
To a suspension of NH4Cl (e.g., 5 eq) in toluene cooled to about 0° C. is added AlMe3 (e.g., 5 eq, 2.0M solution in toluene) dropwise, e.g., via a syringe. The reaction mixture is allowed to warm to room temperature, and stirred until no more bubbling is observed. Pyrazole C is added in 1 portion to the reaction mixture, heated to about 110° C., and stirred at this temperature until judged complete (e.g., using either TLC or LC/MS analysis). Once complete, the reaction mixture is cooled, treated with excess methanol, and stirred vigorously for about 1 hour at room temperature. The thick slurry is filtered, and the resulting solid cake is washed with methanol. The filtrate is concentrated in vacuo, and the resulting solids are re-suspended in an ethyl acetate:isopropyl alcohol, 5:1 v:v, solvent mixture. The reaction mixture is further treated with a saturated sodium carbonate solution, and stirred for about 10 minutes before the layers are separated. The aqueous layer is extracted with the ethyl acetate:isopropyl alcohol, 5:1 v:v, solvent mixture (3×), and the combined organics are washed with brine. The organics are further dried over MgSO4, filtered, and the solvent is removed in vacuo. The product amidine D is used as-is in subsequent steps without further purification.
Preparation of Compound I-2




Intermediate D-1 was accessed via General Procedure A in 58% yield from 1-(isoxazol-3-yl)ethanone using (thiophen-3-ylmethyl)hydrazine hydrochloride in the second step. Intermediate D1: 1H-NMR (400 MHz, DMSO-d6) δ 9.23-9.16 (m, 1H), 8.76 (br s, 3H), 7.73-7.81 (m, 1H), 7.49 (dt, 1H), 7.31 (br s, 1H), 7.08-6.98 (m, 2H), 5.79 (s, 2H).
A suspension of sodium (E,Z)-3-ethoxy-2-fluoro-3-oxoprop-1-en-1-olate (257 mg, 1.65 mmol) and Intermediate D-1 (150 mg, 0.55 mmol) in ethanol (2.7 mL) was stirred at 90° C. for 18 hours. The contents were diluted with ethyl acetate (10 mL) and water (10 mL). The mixture was treated carefully with HCl (1.32 mL, 1.66 mmol, 1.25M solution in ethanol). Layers were separated, and the aqueous layer was extracted with dichloromethane (3×10 mL). The organics were washed with brine (10 mL), dried over MgSO4, filtered, and the solvent was removed in vacuo. Purification by silica gel chromatography (0-20% 7:1=acetonitrile:methanol in dichloromethane) provided impure compound. Purification via reverse phase HPLC provided compound 1-2 (30 mg, 16% yield) as a white solid.
I-2: 1H-NMR (400 MHz, DMSO-d6) δ 13.40-13.17 (br s, 1H), 9.14 (s, 1H), 8.14 (br s, 1H), 7.57 (s, 1H), 7.52-7.45 (m, 1H), 7.40 (br s, 1H), 7.29-7.19 (m, 1H), 7.13 (d, 1H), 5.81 (s, 2H).
Preparation of Compound I-1




To a solution of Intermediate D-1 (50 mg, 0.55 mmol) in pyridine (2.7 mL) was added a mixture of E- and Z-3-ethoxyacrylonitrile (266 mg, 2.74 mmol) and 1,8-diazabicyclo[5.4.0]undec-7-ene (167 mg, 1.10 mmol). The solution was stirred at 110° C. for 18 hours. The contents were diluted with ethyl acetate (10 mL), and washed with saturated ammonium chloride solution (3 mL). Layers seperated, and aqueous layer was diluted with additional water (10 mL). The aqueous layer was then extracted with dichloromethane (3×10 mL). Combined organic layers were washed with brine (10 mL). The organics were dried over MgSO4, filtered, and the solvent was removed in vacuo. Purification by silica gel chromatography (0-30% 7:1=acetonitrile:methanol in dichloromethane) provided compound I-1 (97 mg, 54% yield) as an iridiscent pale brown solid.
Compound I-1: 1H-NMR (400 MHz, DMSO) δ 9.13-9.07 (m, 1H), 8.12 (d, 1H), 7.49-7.46 (m, 1H), 7.45 (d, 1H), 7.29-7.26 (m, 1H), 7.24-7.21 (m, 1H), 6.99-6.92 (m, 3H), 6.36 (dd, 1H), 5.78 (s, 2H).
Preparation of Compound I-3




Intermediate D-2 was accessed via General Procedure A in 49% yield from 1-(isoxazol-3-yl)ethanone using ((3-fluorothiophen-2-yl)methyl)hydrazine hydrochloride in the second step. Intermediate D-2: 1H-NMR (400 MHz, DMSO-d6) δ 9.22-9.18 (m, 1H), 8.46 (br s, 3H), 7.64-7.58 (m, 1H), 7.53-7.47 (m, 1H), 7.10 (t, 1H), 6.95 (d, 1H), 5.92 (s, 2H).
A suspension of sodium (E,Z)-3-ethoxy-2-fluoro-3-oxoprop-1-en-1-olate (200 mg, 0.69 mmol) and Intermediate D-2 (321 mg, 2.06 mmol) in ethanol (3.4 mL) was stirred at 90° C. for 1 hour. The contents were diluted with ethyl acetate (10 mL) and water (10 mL). The mixture was treated carefully with HCl (1.65 mL, 2.06 mmol, 1.25M solution in ethanol). Layers were separated, and the aqueous layer was extracted with dichloromethane (3×20 mL). The organics were washed with brine (10 mL), dried over MgSO4, filtered, and the solvent was removed in vacuo. Purification by silica gel chromatography (0-40% 7:1=acetonitrile:methanol in dichloromethane) provided compound 1-3 (86 mg, 33% yield) as a white solid.
Compound I-3: 1H-NMR (400 MHz, DMSO-d6) δ 13.29 (br s, 1H), 9.18 (d, 1H), 8.16 (br s, 1H), 7.59 (s, 1H), 7.48 (dd, 1H), 7.23 (br s, 1H), 6.95 (d, 1H), 5.95 (s, 2H).
Preparation of Compound I-4




Intermediate D-3 was accessed via General Procedure A in 57% yield from 1-(isoxazol-3-yl)ethanone using (thiophen-2-ylmethyl)hydrazine hydrochloride in the second step. Intermediate D-3: 1H-NMR (400 MHz, DMSO-d6) δ 9.47 (d, J=8.22 Hz, 1H), 9.09-9.26 (m, 1H), 7.66-7.80 (m, 1H), 7.48 (d, J=5.09 Hz, 1H), 7.29-7.42 (m, 1H), 7.24 (d, J=14.48 Hz, 1H), 7.04-7.17 (m, 2H), 6.98 (t, J=4.30 Hz, 1H), 5.93-6.06 (m, 1H).
A suspension of sodium (E,Z)-3-ethoxy-2-fluoro-3-oxoprop-1-en-1-olate (484 mg, 3.00 mmol) and intermediate D-3 (273 mg, 1.0 mmol) in ethanol (10 mL) was stirred at 90° C. for 18 hours. The contents were diluted with ethyl acetate (10 mL) and water (10 mL). The mixture was treated carefully with HCl (1M aqueous solution). The layers were separated, and the aqueous layer was extracted with dichloromethane (3×10 mL). The organics were washed with brine (10 mL), dried over MgSO4, filtered, and the solvent was removed in vacuo. The residue was suspended in diethyl ether and filtered to give compound 1-4 (190 mg, 53% yield) as an off-white solid.
Compound I-4: 1H-NMR (400 MHz, DMSO-d6) δ 13.30 (br. s., 1H), 9.16 (d, J=1.17 Hz, 1H), 8.16 (br. s., 1H), 7.59 (s, 1H), 7.45 (d, J=4.70 Hz, 1H), 7.24 (s, 1H), 7.14 (br. s., 1H), 6.97 (dd, J=4.70, 3.52 Hz, 1H), 6.00 (s, 2H).
Preparation of Compound I-5




Intermediate D-4 was accessed via General Procedure A in 51% yield from 1-(isoxazol-3-yl)ethanone using ((5-fluorothiophen-2-yl)methyl)hydrazine hydrochloride in the second step. 1H-NMR (500 MHz, DMSO-d6) δ 9.25-9.20 (m, 1H), 8.81 (br s, 3H), 7.64 (s, 1H), 7.10 (d, 1H), 6.82 (t, 1H), 6.60 (dd, 1H), 5.87 (s, 2H).
A suspension of sodium (E,Z)-3-ethoxy-2-fluoro-3-oxoprop-1-en-1-olate (146 mg, 0.94 mmol) and Intermediate D-4 (91 mg, 0.31 mmol) in ethanol (1.6 mL) was stirred at 90° C. for 1 hour. The contents were diluted with ethyl acetate (10 mL) and water (10 mL). The mixture was treated carefully with HCl (0.75 mL, 0.94 mmol, 1.25M solution in ethanol). Layers were separated, and the aqueous layer was extracted with dichloromethane (3×20 mL). The organics were washed with brine (10 mL), dried over MgSO4, filtered, and the solvent was removed in vacuo. Purification by silica gel chromatography (0-30% 7:1=acetonitrile:methanol in dichloromethane) provided impure compound. Solids were triturated with ether (5 mL) and dried to yield compound 1-5 (22 mg, 18% yield) as an off-white solid. 1H-NMR (500 MHz, DMSO-d6) δ 13.28 (br s, 1H), 9.17 (d, 1H), 8.14 (br s, 1H), 7.60 (s, 1H), 7.26 (s, 1H), 6.87 (br s, 1H), 6.59 (dd, 1H), 5.87 (s, 2H).
Example 2
Biological Activity Measurement by the sGC-HEK-cGMP Assay
(Assay Run with SNP Incubation)
Human embryonic kidney cells (HEK293), endogenously expressing soluble guanylate cyclase (sGC), were used to evaluate the activity of test compounds. Compounds stimulating the sGC receptor should cause an increase in the intracellular concentration of cGMP. HEK 293 cells were seeded in Dulbecco's Modification of Eagle's Medium supplemented with fetal bovine serum (10% final) and L-glutamine (2 mM final) in a 200 μL volume at a density of 1×105 cells/well in a poly-D-lysine coated 96 well flat bottom plate and grown overnight at 37° C. Medium was aspirated and cells were washed with 1× Hank's Buffered Saline Salt Solution (200 μL). Cells were then incubated for 15 minutes at 37° C. with 200 μL of a 0.5 mM 3-isobutyl-1-methylxanthine (IBMX) solution. Test article and sodium nitroprusside solutions (x μM concentration for test article solution and 10 μM concentration for SNP solution; wherein x is one of the following concentrations);
30 uM
10 uM
3 uM
1 uM
0.3 uM
0.1 uM
0.03 uM
0.01 uM
0.003 uM
0.001 uM
0.0003 uM
0.0001 uM
were then added to the assay mixture (2 μL each) and the resulting mixture incubated at 37° C. for 10 minutes. After the 10 minute incubation, the assay mixture was aspirated and 0.1M HCl (200 μL) was added to the cells. The plate was incubated at 4° C. for 30 minutes in the 0.1M HCl to stop the reaction and lyse the cells. The plates were then centrifuged at 1,200 g for 5 minutes at room temperature. Supernatants were collected and transferred to a new flat bottom 96 well plate for analysis by HPLC-MS. Vehicle controls were carried out using DMSO (1%) solutions. A known sGC stimulator, BAY 41-2272, was used as the positive control. Samples were diluted with an equal volume of 1 M Ammonium Acetate (pH 7) to neutralize samples for better chromatography. A 2× cGMP standard solution was prepared in 0.1 M HCl and then diluted with an equal volume of 1 M Ammonium Acetate, with the following final concentrations in nM: 1024, 512, 256, 128, 64, 32, 16, 8, 4, 2, 1. cGMP concentrations in the test plates were determined from each sample using the LC/MS conditions shown in Table 2 below and the calculated cGMP standard curve. EC50 values were calculated from concentration-response curves generated with GraphPad Prism Software.
The biological activities of some of the compounds of Formula I determined with the sGC—HEK assay with SNP incubation are summarized in Tables 3A and 3B.







TABLE 2





(HPLC LC/MS experimental conditions)
















MS:
Thermo Quantum or Waters LCMS


Ion Mode:
ESI+


Scan Type:
MRM

















Dwell
Collision

Retention




Time
Energy
Tube
Time


Compound:
Transition
(msec)
(V)
Lens
(min)





cGMP
346 > 152
100
28
139
1.0








HPLC:
Agilent Technologies 1200 Series with CTC Analytics HTS PAL


Column:
Thermo Hypersil Gold 2.1 × 50 mm 5 micron particle size


Flow Rate:
400 uL/min


Column
RT


Temperature:


Autosampler
6° C.


Temperature:


Injection Volume:
20 uL


Mobile Phases:
A = 98:2 Water:Acetonitrile + 0.1% Formic Acid



B = 2:98 Water:Acetonitrile + 0.1% Formic Acid















Gradient:
Time (min)
% A
% B








0
100
0



0.3
30
70



2.00
30
70



2.01
100
0



4
100
0
















TABLE 3A







Whole cell activity in the HEK assay.












HEK assay
HEK assay
HEK assay
HEK assay



(Percent
(Percent
(Percent
Emax-un-


Compound
Emax
Emax
Emax
constrained


No.
at 1 μM)*
at 10 μM)*
at 30 μM)*
(Percent)+





I-1
C
D
E
E


I-2
C
D
D
D


I-3
D
D
E
D


I-4
A
D
D
E





*Percent Emax was obtained at twelve concentrations of the test compound as explained above; the results for three of them (1, 10 and 30 μM) are shown in Table 3A. The code definitions for the sGC enzyme activity values, expressed as % Emax in the presence of 10 μM of SNP (wherein Emax = 100% was the activity in the HEK assay obtained with the positive control BAY 41-2272 at 10 μM in the presence of 100 μM SNP) are:


A = 0 to <10%


B = 10 to <20%


C = 20 to <40%


D = 40 to <60


E = 60 or <80%


F = 80 to <100%


G = 100 to <120%


H = 120% or higher


— = not determined


+The same code definitions apply for Emax unconstrained, wherein this value is defined as the maximum activity value obtained from the full concentration-response curve for the compound, relative to the positive control value of 100% obtained as above. Here, the term “unconstrained” means that, during analysis of the sGC enzyme activity data, the top portion of the concentration-response curve was not fitted to 100%.













TABLE 3B







More whole cell activity in the HEK assay.










Compound
HEK assay EC50-



No.
unconstrained (μM)#







I-1
D



I-2
C



I-3
A



I-4
E







#EC50 values were obtained from the full concentration response curve following two methods: EC50 constrained refers to the value obtained when the top of the curve was fitted to 100% (wherein Emax = 100% was the activity in the HEK assay obtained with the positive control BAY 41-2272 at 10 μM in the presence of 100 μM SNP); EC50 unconstrained here repored refer to the value obtained from a full concentration-response curve when the top of the curve is not fitted to 100%. The EC50 code definition in micromolar (μM) are:



0.01 ≦ EC50 < 0.1 = A



0.1 ≦ EC50 < 0.5 = B



0.5 ≦ EC50 < 1.0 = C



1.0 ≦ EC50 < 5.0 = D



5.0 ≦ EC50 < 10.0 = E



EC50 ≧ 10.0 = F






Example 3A
Biological Activity Measurements by the Purified Human sGC Enzyme Activity Assay
Human soluble guanylate cyclase enzyme (hsGC) obtained from Enzo Inc. (P/N: ALX-201-177) was used to evaluate the activity of test compounds. The assay reactions contained 0.1 M Tris (pH 8.0), 0.5 mg/mL BSA (pH 8.0), 2 mM DTT, 2 mM MgCl2, 300 μM GTP, 1 mM 3-isobutyl-1-methylxanthine (IBMX) and 5 ng human soluble guanylate cyclase enzyme. Test compounds in DMSO were then added (2 μL, 10 or 30 μM final concentration) and incubated (water, 200 μL, 96-well plate format) at 37° C. for 30 minutes. The controls were carried out using 2 μL DMSO. After the 30 minute incubation, the reaction was stopped with the addition of 200 μL of cold methanol. The plate was then centrifuged at 3,200 rpm for 10 minutes at room temperature. Supernatants (200 μL) were collected and transferred to a new 96 well plate for analysis by HPLC LC/MS/MS.
An 8 point cGMP (Sigma-Aldrich P/N: G6129) standard curve was prepared in assay buffer ranging from 0.156-20 μM. Samples for the cGMP standard curve were then diluted with an equal volume of methanol resulting in final cGMP concentrations of 0.078-10 μM.
cGMP concentrations in all samples were determined using LC/MS/MS analysis, using the conditions listed in Table 4 below. The cGMP standard curve was generated using GraphPad Prism Software.
Calculations: Specific Activity was determined by the amount of cGMP formed (nmoles) per mg of sGC per min. Enzyme “fold-change” was calculated by dividing Specific Activity for test compounds by Specific Activity of DMSO controls.







TABLE 4





LC/MS/MS method for detection of cGMP







Inlet Method:








HPLC:
Waters Acquity


Column:
Thermo Hypersile Gold PFP, 2.1 × 30 mm, 3 μm


Guard Column:
Thermo Hypersile Gold, 2.1 × 10 mm


Column Temp:
25° C.


Flow Rate:
0.4 mL/min


Auto sampler:
Acquity; 6° C.


Injection Volume:
10 uL


Mobile Phases:
A = 0.1% Acetic Acid (v/v) in 100% water



B = 0.1% Acetic Acid (v/v) in 100 methanol














Gradient:
Time (min)
% A
% B
Curve






0
95
5
6



0.5
95
5
6



0.6
10
90
6



2.0
10
90
6



2.1
95
5
6











4
(end)








MS File: cGMP.exp








Mass Spectrum:
Waters Quattro micro


Ionization:
ES+


Source, Desolvation:
150° C., 450° C.


MS Function:
MRM


















Collision




Dwell
Cone
Energy


Compound
Transition
(sec)
(V)
(eV)





cGMP
346 > 152
0.1
35
20









Example 3B
Biological Measurement by the Purified Human sGC Enzyme Synergy Performed in the Presence of Sodium Nitroprusside (SNP), a Nitric Oxide Donor
Enzyme assays were performed as described above, but the assay was done in the presence of 1 μM sodium nitroprusside (SNP). Data for compounds of Table 1 is summarized in Table 5 below.







TABLE 5







Enzyme Data With SNP.*










Compound
Enzyme Activity (increase



No.
at 30 μM with SNP)*







I-1
D



I-2
D







*The compounds were tested at a concentration of 30 μM in the presence of 1 μM SNP. The code for the fold increase in enzyme activity is:



A = no increase to <2 fold increase



B = 2 to <5 fold increase



C = 5 to <10 fold increase



D = 10 or <20 fold increase



E = 20 to 30 fold increase



F = >30 fold increase






Example 4
Biological Activity Measurement by the Thoracic Aortic Rings Assay
Thoracic aortic rings were dissected from anesthetized (isoflurane) male Sprague-Dawley rats weighing 275-299 g. Tissues were immediately transferred to ice-cold Krebs-Henseleit solution, which had been aerated with 95% O2 and 5% CO2 for 30 minutes. Following removal of connective tissue, aortic sections were cut into 4 rings ( ̃2 mm each) and suspended on 2 L-shaped hooks, with one hook fixed at the bottom of the tissue bath (Schuler Organ Bath, Harvard Apparatus) and the other connected to a force transducer (F30 Force Transducer, Harvard Apparatus). Baths contained Krebs Henseleit solution (10 mL) heated to 37° C. and aerated with 95% O2 and 5% CO2. Rings were brought to an initial tension of 0.3-0.5 g and gradually raised to a resting tension of 1.0 g over 60 minutes. Rings were rinsed with Krebs Henseleit solution (heated to 37° C. and aerated with 95% 02 and 5% CO2) at 15 minute intervals until a stable baseline was obtained. Rings were considered to be stable after a resting tension of 1.0 g was maintained (for approximately 10 minutes) without need for adjustment. Rings were then contracted with 100 ng/mL phenylephrine by adding 100 uL of a 10 m/mL phenylephrine stock solution. Tissues achieving a stable contraction were then treated in a cumulative, dose dependent manner with test compounds prepared in dimethylsulfoxide (DMSO). In some cases, tissues were rinsed three times over a 5 minute period with Krebs-Heinseleit's solution (heated to 37° C. and aerated with 95% 02 and 5% CO2), allowed to stabilize at baseline, and then used for characterization of other test articles or DMSO effects. All data were collected using the HSE-ACAD software provided by Harvard Apparatus. Percent relaxation effects were calculated in Microsoft Excel using the recorded tension value of 100 ng/mL phenylephrine treatment as 0% inhibition and treatment with 100 μM 3-isobutyl-1-methylxanthine as 100% inhibition. EC50 values were calculated from concentration-response curves generated with GraphPad Prism Software.
Example 5
Biological Activity Measurement by the Thoracic Aortic Rings Assay
As an alternative thoracic aortic rings assay, the procedure of Example 5 was used except that percent relaxation effects were calculated in Microsoft Excel using the recorded tension value of 100 ng/mL phenylephrine treatment as 0% inhibition and, after washing the tissue with buffer, the original resting tension of the tissue was used as 100% inhibition.
A number of embodiments have been described. Nevertheless, it will be understood that various modifications may be made without departing from the spirit and scope of the invention.
Example 6
Animal Models Descriptions
Lamb Model of Pulmonary Hemodynamics Using Inhaled sGC Stimulator
(“Inhaled Agonists of Soluble Guanylate Cyclase Induce Selective Pulmonary Vasodilation”, Oleg V. et al, American J of Resp and Critical Care Medicine, Vol 176, 2007, p 1138)
It is possible to test whether inhalation of novel dry-powder microparticle formulations containing sGC stimulators would produce selective pulmonary vasodilation in lambs with acute pulmonary hypertension by following a published procedure. It is also possible to evaluate the combined administration of the microparticles of sGC stimulator and inhaled nitric oxide (iNO) in this system. Finally, it is possible to examine whether inhaling microparticles of an sGC stimulator would produce pulmonary vasodilation when the response to iNO (inducible nitric oxide synthase) is impaired.
Protocol: In awake, spontaneously breathing lambs instrumented with vascular catheters and a tracheostomy tube, U-46619 is infused intravenously to increase mean pulmonary arterial pressure to 35 mm Hg Inhalation of microparticles composed of either BAY 41-2272, BAY 41-8543, or BAY 58-2667 and excipients (dipalmitoylphosphatidylcholine, albumin, lactose) produced dose dependent pulmonary vasodilation and increased transpulmonary cGMP release without significant effect on mean arterial pressure Inhalation of microparticles containing BAY 41-8543 or BAY 58-2667 increased systemic arterial oxygenation. The magnitude and duration of pulmonary vasodilation induced by iNO were augmented after inhaling BAY 41-8543 microparticles. Intravenous administration of 1H-[1,2,4]oxadiazolo[4,3-a]quinoxalin-1-one (ODQ), which oxidizes the prosthetic heme group of sGC, markedly reduced the pulmonary vasodilator effect of iNO. In contrast, pulmonary vasodilation and transpulmonary cGMP release induced by inhaling BAY 58-2667 microparticles were greatly enhanced after treatment with ODQ. Thus, inhalation of microparticles containing agonists of sGC may provide an effective novel treatment for patients with pulmonary hypertension, particularly when responsiveness to iNO is impaired by oxidation of sGC. Note: BAY 41-2272, BAY 41-8543 are sGC stimulators whereas BAY 58-2667 is an sGC activator.
Electrical Field Stimulated Guinea Pig Tracheal Smooth Muscle In Vitro (Ex Vivo) Model for the Assessment of Bronchodilation.
It is possible to assess the bronchodilating effects of sGC stimulators by using the system described below. This system allowed us to determine potency, efficacy and duration of action of several sGC stimulators, as well as to assess potential side effects such as blood pressure, or heart rate changes.
Animals: Guinea pig, Dunkin Hartley, male, Full barrier-bred and certified free of specific micro-organisms on receipt 525-609 g on the experimental day, Harlan UK Ltd. Guinea pigs were housed in a group of 4 in solid-bottomed cages with Gold Flake bedding in a controlled environment (airflow, temperature and humidity). Food (FD1, Special Diet Services) and water were provided ad libitum.
Guinea Pig Tracheal Smooth Muscle Contraction in Response to EFS. Assessment of Compound Potency and Efficacy:
On each experimental day, a guinea pig was killed by exposure to a rising concentration of CO2 and the trachea removed. The trachea was cleaned of extraneous tissue and cut open longitudinally in a line opposite the muscle, opened out and cut into strips 2-3 cartilage rings wide. A cotton loop was attached to one end of each tracheal strip and a length of cotton to the other end. Tracheal strips were then suspended between two platinum electrodes, using tissue holders, in a Myobath system (World Precision Instruments Stevenage, UK). The loop was attached over the hook at the bottom of the tissue holder and the other end attached to the arm of a FORT10 force transducer (World Precision Instruments Stevenage, UK) ensuring that the tissue was positioned between the two platinum electrodes. The whole assembly was then lowered into a 10 ml tissue bath containing modified Kreb's-Henseleit buffer, at 37° C., bubbled with Carbogen. A 1 g tension was applied to each piece of tissue and the tissue washed, followed by a 1 hour stabilization period. Once the tissues had been allowed to stabilize, the apparatus for electrical field stimulation was set to deliver a stimulation of frequency 80 Hz pulse width 0.1 ms, with a gated, uni-polar pulse, every 2 minutes using a DS8000 8 channel digital stimulator (World Precision Instruments Stevenage, UK). A voltage response curve was carried out on each tracheal strip at 2, 4, 6, 7, 8, 10, 12 V and a sub-maximal voltage then selected to apply to each tissue during the remainder of the experiment. Guinea pig tracheal smooth muscle (GPTSM) contraction was induced using sub-maximal Electrical Field Stimulation (EFS) (It is also possible to induce contraction by using a spasmogen substance, such as methacholine or histamine as described in Coleman et al.*). Compounds were dissolved in 100% DMSO at 3×10-2M and aliquots stored at −200 C. A separate aliquot was used for each experiment. Tissues were washed with Kreb's buffer and stimulated using the previously determined sub-maximal voltage for 1 hour to establish a stable baseline contraction prior to assessment of compound activity. *“Novel and Versatile Superfusion System. Its use in the Evaluation of Some Spasmogenic and Spasmolytic Agents Using Guinea pig isolated Tracheal Smooth Muscle.”, R. A. Coleman et al., J. Pharmacol. Methods, 21, 71-86, 1989.
A cumulative dose response curve (DRC) to each test substance was then performed and changes in smooth muscle contraction measured. The effect of each test substance in each experiment was expressed as a percentage inhibition of the baseline contraction, normalized to the relevant vehicle controls. The experiment was performed three times, using tissue from three different animals. The data from all three experiments was pooled, the DRC plotted, and the test substance potency and efficacy determined. The potency of Ipratropium bromide was assessed alongside the test compounds and the IC50 determined to be 0.86 nM (95% Cl, 0.78-0.94), in agreement with data previously produced in the system.

## Claims

1. A compound according to Formula I, or a pharmaceutically acceptable salt thereof,



wherein:
ring B is a 5-membered heteroaryl ring selected from furan or thiophene;
n is an integer selected from 0 to 3;
each JB is independently selected from halogen, —CN, a C1-6 aliphatic, —ORB or a C3-8 cycloaliphatic group; wherein each said C1-6 aliphatic and each said C3-8 cycloaliphatic group is optionally and independently substituted with up to 3 instances of R3;
each RB is independently selected from hydrogen, a C1-6 aliphatic or a C3-8 cycloaliphatic ring; wherein each said C1-6 aliphatic and each said C3-8 cycloaliphatic ring is optionally and independently substituted with up to 3 instances of R3a;
each R3 is independently selected from halogen, —CN, C1-4 alkyl, C1-4 haloalkyl, —O(C1-4 alkyl) or —O(C1-4 haloalkyl);
each R3a is independently selected from halogen, —CN, C1-4 alkyl, C1-4 haloalkyl, —O(C1-4 alkyl) or —O(C1-4 haloalkyl);
X is selected from N, C-JD or C—H;
o is an integer selected from 0 to 3;
each JD is independently selected from halogen, —NO2, —ORD, —SRD, —C(O)RD, —C(O)ORD, —C(O)N(RD)2, —CN, —N(RD)2, —N(Rd)C(O)RD, —N(Rd)C(O)ORD, —SO2RD, —SO2N(RD)2, —N(Rd)SO2RD, a C1-6 aliphatic, —(C1-6 aliphatic)-RD, a C3-8 cycloaliphatic ring, a 6 to 10-membered aryl ring, a 4 to 8-membered heterocyclic ring or a 5 to 10-membered heteroaryl ring; wherein each said 4 to 8-membered heterocylic ring and each said 5 to 10-membered heteroaryl ring contains between 1 and 3 heteroatoms independently selected from O, N or S; and wherein each said C1-6 aliphatic, each said C3-8 cycloaliphatic ring, each said 6 to 10-membered aryl ring, each said 4 to 8-membered heterocyclic ring and each said 5 to 10-membered heteroaryl ring is optionally and independently substituted with up to 3 instances of R5;
each RD is independently selected from hydrogen, a C1-6 aliphatic, —(C1-6 aliphatic)-Rf, a C3-8 cycloaliphatic ring, a 4 to 8-membered heterocyclic ring, phenyl or a 5 to 6-membered heteroaryl ring; wherein each said 4 to 8-membered heterocylic ring and each said 5 to 6-membered heteroaryl ring contains between 1 and 3 heteroatoms independently selected from O, N or S; and wherein each said C1-6 aliphatic, each said C3-8 cycloaliphatic ring, each said 4 to 8-membered heterocyclic ring, each said phenyl and each said 5 to 6-membered heteroaryl ring is optionally and independently substituted with up to 3 instances of R5a;
each Rd is independently selected from hydrogen, a C1-6 aliphatic, —(C1-6 aliphatic)-Rf, a C3-8 cycloaliphatic ring, a 4 to 8-membered heterocyclic ring, phenyl or a 5 to 6-membered heteroaryl ring; wherein each said heterocylic ring and each said heteroaryl ring contains between 1 and 3 heteroatoms independently selected from O, N or S; and wherein each said C1-6 aliphatic, each said C3-8 cycloaliphatic ring, each said 4 to 8-membered heterocyclic ring, each said phenyl and each said 5 to 6-membered heteroaryl ring is optionally and independently substituted by up to 3 instances of R5b;
each Rf is independently selected from a C3-8 cycloaliphatic ring, a 4 to 8-membered heterocyclic ring, phenyl or a 5 to 6-membered heteroaryl ring; wherein each said heterocylic ring and each said heteroaryl ring contains between 1 and 3 heteroatoms independently selected from O, N or S; and wherein each said C1-6 aliphatic, each said C3-8 cycloaliphatic ring, each said 4 to 8-membered heterocyclic ring, each said phenyl and each said 5 to 6-membered heteroaryl ring is optionally and independently substituted by up to 3 instances of R5c;
when JD is —C(O)N(RD)2, —N(RD)2 or —SO2N(RD)2, the two instances of RD together with the nitrogen atom attached to the RD, alternatively form a 4 to 8-membered heterocyclic ring or a 5-membered heteroaryl ring; wherein each said 4 to 8-membered heterocyclic ring and each said 5-membered heteroaryl ring optionally contains up to 2 additional heteroatoms independently selected from N, O or S, and wherein each said 4 to 8-membered heterocyclic ring and each said 5-membered heteroaryl ring is optionally and independently substituted by up to 3 instances of R5; or
when JD is —N(Rd)C(O)RD, the RD group together with the carbon atom attached to the RD group, with the nitrogen atom attached to the Rd group and with the Rd group alternatively form a 4 to 8-membered heterocyclic ring or a 5-membered heteroaryl ring; wherein each said 4 to 8-membered heterocyclic ring and each said 5-membered heteroaryl ring optionally contains up to 2 additional heteroatoms independently selected from N, O or S, and wherein each said 4 to 8-membered heterocyclic ring and each said 5-membered heteroaryl ring is optionally and independently substituted by up to 3 instances of R5;
when JD is —N(Rd)C(O)ORD, the RD group together with the oxygen atom attached to the RD group, with the carbon atom of the —C(O)— portion of the —N(Rd)C(O)ORD group, with the nitrogen atom attached to the Rd group, and with the Rd group alternatively form a 4 to 8-membered heterocyclic ring or a 5-membered heteroaryl ring; wherein each said 4 to 8-membered heterocyclic ring and each said 5-membered heteroaryl ring optionally contains up to 2 additional heteroatoms independently selected from N, O or S, and wherein each said 4 to 8-membered heterocyclic ring and each said 5-membered heteroaryl ring is optionally and independently substituted by up to 3 instances of R5;
when JD is —N(Rd)SO2RD, the RD group together with the oxygen atom attached to the RD group, with the sulfur atom attached to said oxygen atom in the —SO2RD portion of the —N(Rd)SO2RD group, with the nitrogen atom attached to the Rd group, and with the Rd group alternatively form a 4 to 8-membered heterocyclic ring or a 5-membered heteroaryl ring; wherein each said 4 to 8-membered heterocyclic ring and each said 5-membered heteroaryl ring optionally contains up to 2 additional heteroatoms independently selected from N, O or S, and wherein each said 4 to 8-membered heterocyclic ring and each said 5-membered heteroaryl ring is optionally and independently substituted by up to 3 instances of R5;
each R5 is independently selected from halogen, —CN, —NO2, C1-4 alkyl, a C7-12 aralkyl, C3-8 cycloalkyl ring, C1-4 haloalkyl, C1-4 cyanoalkyl, —OR6, —SR6, —OCOR6, —COR6, —C(O)OR6, —C(O)N(R6)2, —N(R6)C(O)R6, —N(R6)2, —SO2R6, —SO2N(R6)2, —N(R6)SO2R6, phenyl or an oxo group; wherein each said phenyl group is optionally and independently substituted with up to 3 instances of halogen, —OH, —NH2, —NH(C1-4 alkyl), —N(C1-4 alkyl)2, —NO2, —CN, C1-4 alkyl, C1-4 haloalkyl, —O(C1-4 alkyl) or —O(C1-4 haloalkyl); and wherein each said C7-12 aralkyl and each said cycloalkyl group is optionally and independently substituted with up to 3 instances of halogen;
each R5a is independently selected from halogen, —CN, —NO2, C1-4 alkyl, a C7-12 aralkyl, C3-8 cycloalkyl ring, C1-4 haloalkyl, C1-4 cyanoalkyl, —OR6, —SR6, —OCOR6, —COR6, —C(O)OR6, —C(O)N(R6)2, —N(R6)C(O)R6, —N(R6)2, —SO2R6, —SO2N(R6)2, —N(R6)SO2R6, phenyl or an oxo group; wherein each said phenyl group is optionally and independently substituted with up to 3 instances of halogen, —OH, —NH2, —NH(C1-4 alkyl), —N(C1-4 alkyl)2, —NO2, —CN, C1-4 alkyl, C1-4 haloalkyl, —O(C1-4 alkyl) or —O(C1-4 haloalkyl); and wherein each said C7-12 aralkyl and each said cycloalkyl group is optionally and independently substituted with up to 3 instances of halogen;
each R5b is independently selected from halogen, —CN, —NO2, C1-4 alkyl, a C7-12 aralkyl, C3-8 cycloalkyl ring, C1-4 haloalkyl, C1-4 cyanoalkyl, —OR6, —SR6, —OCOR6, —COR6, —C(O)OR6, —C(O)N(R6)2, —N(R6)C(O)R6, —N(R6)2, —SO2R6, —SO2N(R6)2, —N(R6)SO2R6, phenyl or an oxo group; wherein each said phenyl group is optionally and independently substituted with up to 3 instances of halogen, —OH, —NH2, —NH(C1-4 alkyl), —N(C1-4 alkyl)2, —NO2, —CN, C1-4 alkyl, C1-4 haloalkyl, —O(C1-4 alkyl) or —O(C1-4 haloalkyl); and wherein each said C7-12 aralkyl and each said cycloalkyl group is optionally and independently substituted with up to 3 instances of halogen;
each R5c is independently selected from halogen, —CN, —NO2, C1-4 alkyl, a C7-12 aralkyl, C3-8 cycloalkyl ring, C1-4 haloalkyl, C1-4 cyanoalkyl, —OR6, —SR6, —OCOR6, —COR6, —C(O)OR6, —C(O)N(R6)2, —N(R6)C(O)R6, —N(R6)2, —SO2R6, —SO2N(R6)2, —N(R6)SO2R6, phenyl or an oxo group; wherein each said phenyl group is optionally and independently substituted with up to 3 instances of halogen, —OH, —NH2, —NH(C1-4 alkyl), —N(C1-4 alkyl)2, —NO2, —CN, C1-4 alkyl, C1-4 haloalkyl, —O(C1-4 alkyl) or —O(C1-4 haloalkyl); and wherein each said C7-12 aralkyl and each said cycloalkyl group is optionally and independently substituted with up to 3 instances of halogen;
each R6 is independently selected from hydrogen, a C1-4 alkyl, a C2-4 alkenyl, phenyl, a C7-12 aralkyl or a C3-8 cycloalkyl ring; wherein each said C1-4 alkyl, each said C2-4 alkenyl, each said phenyl, each said C7-12 aralkyl and each said C3-8 cycloalkyl group is optionally and independently substituted with up to 3 instances of halogen;
alternatively, two instances of R6 linked to the same nitrogen atom of R5, together with said nitrogen atom of R5, form a 5 to 8-membered heterocyclic ring or a 5-membered heteroaryl ring; wherein each said 5 to 8-membered heterocyclic ring and each said 5-membered heteroaryl ring optionally contains up to 2 additional heteroatoms independently selected from N, O or S; or
alternatively, one instance of R6 linked to a nitrogen atom of R5 and one instance of R6 linked to a carbon or sulfur atom of the same R5, together with said nitrogen and said carbon or sulfur atom of the same R5, form a 5 to 8-membered heterocyclic ring or a 5-membered heteroaryl ring; wherein each said 5 to 8-membered heterocyclic ring and each said 5-membered heteroaryl ring optionally contains up to 2 additional heteroatoms independently selected from N, O or S;
or, alternatively, two JD groups attached to two vicinal ring D atoms, taken together with said two vicinal ring D atoms, form a 5 to 7-membered heterocycle resulting in a fused ring D wherein said 5 to 7-membered heterocycle contains from 1 to 3 heteroatoms independently selected from N, O or S; and wherein said 5 to 7-membered heterocycle is optionally and independently substituted by up to 3 instances of halogen, —OH, —NH2, —NH(C1-4 alkyl), —N(C1-4 alkyl)2, C1-4 alkyl, C1-4 haloalkyl, —O(C1-4 alkyl), —O(C1-4 haloalkyl), oxo or phenyl; wherein said phenyl is optionally and independently substituted by up to three instances of halogen, —OH, —NH2, —NH(C1-4 alkyl), —N(C1-4 alkyl)2, —NO2, —CN, C1-4 alkyl, C1-4 haloalkyl, —O(C1-4 alkyl) or —O(C1-4 haloalkyl);
RC is a ring C; ring C is a phenyl ring, a monocyclic 5 or 6-membered heteroaryl ring, a bicyclic 8 to 10-membered heteroaryl ring, a monocyclic 3 to 10-membered cycloaliphatic ring, or a monocyclic 4 to 10-membered heterocycle; wherein said monocyclic 5 or 6-membered heteroaryl ring, said bicyclic 8 to 10-membered heteroaryl ring, or said monocyclic 4 to 10-membered heterocycle contain between 1 and 4 heteroatoms selected from N, O or S; wherein said monocyclic 5 or 6-membered heteroaryl ring is not a 1,3,5-triazinyl ring; and wherein said phenyl, monocyclic 5 to 6-membered heteroaryl ring, bicyclic 8 to 10-membered heteroaryl ring, or monocyclic 4 to 10-membered heterocycle is optionally and independently substituted with up to 3 instances of JC;
each JC is independently selected from halogen, —CN, —NO2, a C1-6 aliphatic, —ORH, —SRH, —N(RH)2, a C3-8 cycloaliphatic ring or a 4 to 8-membered heterocyclic ring; wherein said 4 to 8-membered heterocyclic ring contains 1 or 2 heteroatoms independently selected from N, O or S; wherein each said C1-6 aliphatic, each said C3-8 cycloaliphatic ring and each said 4 to 8-membered heterocyclic ring, is optionally and independently substituted with up to 3 instances of R7; or alternatively, two JC groups attached to two vicinal ring C atoms, taken together with said two vicinal ring C atoms, form a 5 to 7-membered heterocycle resulting in a fused ring C; wherein said 5 to 7-membered heterocycle contains from 1 to 2 heteroatoms independently selected from N, O or S;
each RH is independently selected from hydrogen, a C1-6 aliphatic, a C3-8 cycloaliphatic ring or a 4 to 8-membered heterocyclic ring; wherein each said 4 to 8-membered heterocylic ring contains between 1 and 3 heteroatoms independently selected from O, N or S; and wherein each said C1-6 aliphatic, each said C3-8 cycloaliphatic ring, each said 4 to 8-membered heterocyclic ring, is optionally and independently substituted with up to 3 instances of R7a;
alternatively, two instances of RH linked to the same nitrogen atom of JC, together with said nitrogen atom of JC, form a 4 to 8-membered heterocyclic ring or a 5-membered heteroaryl ring; wherein each said 4 to 8-membered heterocyclic ring and each said 5-membered heteroaryl ring optionally contains up to 2 additional heteroatoms independently selected from N, O or S, and wherein each said 4 to 8-membered heterocyclic ring and each said 5-membered heteroaryl ring is optionally and independently substituted by up to 3 instances of R7b; or
each R7 is independently selected from halogen, —CN, —NO2, C1-4 alkyl, C1-4 haloalkyl, C3-8 cycloalkyl ring, —OR8, —SR8, —N(R8)2, or an oxo group; wherein each said cycloalkyl group is optionally and independently substituted with up to 3 instances of halogen;
each R7a is independently selected from halogen, —CN, —NO2, C1-4 alkyl, C1-4 haloalkyl, C3-8 cycloalkyl ring, —OR8, —SR8, —N(R8)2, or an oxo group; wherein each said cycloalkyl group is optionally and independently substituted with up to 3 instances of halogen;
each R7b is independently selected from halogen, —CN, —NO2, C1-4 alkyl, C1-4 haloalkyl, C3-8 cycloalkyl ring, —OR8, —SR8, —N(R8)2, or an oxo group; wherein each said cycloalkyl group is optionally and independently substituted with up to 3 instances of halogen;
each R8 is independently selected from hydrogen, a C1-4 alkyl, C1-4 haloalkyl or a C3-8 cycloalkyl ring; wherein each said cycloalkyl group is optionally and independently substituted with up to 3 instances of halogen;
alternatively, two instances of R8 linked to the same nitrogen atom of R7, together with said nitrogen atom of R7, form a 5 to 8-membered heterocyclic ring or a 5-membered heteroaryl ring; wherein each said 5 to 8-membered heterocyclic ring and each said 5-membered heteroaryl ring optionally contains up to 2 additional heteroatoms independently selected from N, O or S; and
RA is selected from hydrogen, halogen, C1-4 alkyl or C1-4 haloalkyl.

2. The compound of claim 1, or a pharmaceutically acceptable salt thereof, wherein ring B is thiophene.

3. The compound of claim 2, or a pharmaceutically acceptable salt thereof, wherein the thiophene ring B is unsubstituted and n is 0.

4. The compound of claim 1, or a pharmaceutically acceptable salt thereof, wherein n is an integer selected from 1 to 3 and wherein each JB is independently selected from halogen, a C1-6 aliphatic or —ORB.

5. The compound of claim 1, or a pharmaceutically acceptable salt thereof, wherein ring B is a furan.

6. The compound of claim 1, or a pharmaceutically acceptable salt thereof, wherein X in ring D is C-JD or C—H.

7. The compound of claim 1, or a pharmaceutically acceptable salt thereof, wherein X in ring D is N.

8. The compound of claim 6, or a pharmaceutically acceptable salt thereof, wherein o is an integer selected between 1 and 3 and each JD is independently selected from halogen, a C1-6 aliphatic, —N(RD)2, —N(Rd)C(O)RD, —N(Rd)C(O)ORD, —N(Rd)C(O)N(RD)2, —SO2RD, —SO2N(RD)2, —N(Rd)SO2RD, —SRD, —ORD or an optionally substituted C3-8 cycloaliphatic ring.

9. The compound of claim 8, or a pharmaceutically acceptable salt thereof, wherein each JD is independently selected from methyl, chloro, fluoro, —N(RD)2, or —ORD.

10. The compound of claim 9, or a pharmaceutically acceptable salt thereof, wherein each RD is independently selected from hydrogen or C1-4 alkyl.

11. The compound of claim 9, or a pharmaceutically acceptable salt thereof, wherein, o is 1 or 2 and each JD is independently selected from fluoro, hydroxyl or amino.

12. The compound of claim 1, or a pharmaceutically acceptable salt thereof, wherein ring C is a phenyl, a monocyclic 5 or 6-membered heteroaryl ring, a monocyclic 3 to 6-membered cycloaliphatic ring or a monocyclic 4 to 6-membered heterocycle; each of them optionally and independently substituted with up to 3 instances of JC.

13. The compound of claim 12, or a pharmaceutically acceptable salt thereof, wherein ring C is a 5 to 6-membered heteroaryl ring, optionally substituted by up to 3 instances of JC.

14. The compound of claim 13, or a pharmaceutically acceptable salt thereof, wherein said 5 to 6-membered heteroaryl ring is selected from thienyl, thiazolyl, oxadiazolyl, oxazolyl, isooxazolyl, tetrazolyl, pyrrolyl, triazolyl, furanyl, pyridinyl, pyrimidinyl, pyrazinyl or pyridazinyl.

15. The compound of claim 14, or a pharmaceutically acceptable salt thereof, wherein ring C is an oxazolyl or isoxazolyl and it is unsubstituted.

16. The compound of claim 1, or a pharmaceutically acceptable salt thereof, having Formula IIA or IIB:



wherein JB is selected from hydrogen or halogen.

17. The compound of claim 16, or a pharmaceutically acceptable salt thereof, wherein o is an integer from 1 to 3, n is 2 and each JD is independently selected from a halogen atom or —NH2 or —OH.

18. The compound of claim 16, or a pharmaceutically acceptable salt thereof, wherein o is an integer from 1 to 3, n is 1 and JD is —NH2.

19. The compound of claim 16, or a pharmaceutically acceptable salt thereof, wherein ring C is a 5-6 membered heteroaryl ring and it is optionally and independently substituted by up to 3 instances of JC.

20. The compound of claim 19, or a pharmaceutically acceptable salt thereof, wherein said 5 to 6-membered heteroaryl ring is unsubstituted.

21. The compound of claim 19, or a pharmaceutically acceptable salt thereof, wherein ring C is a 5-6 membered heteroaryl and it is substituted by 1 or 2 instances of JC; wherein each JC is selected from fluoro, chloro, bromo, methyl, —CN, —NH2 or —OCH3.

22. The compound of claim 19, or a pharmaceutically acceptable salt thereof, wherein ring C is an isoxazole and it is unsubstituted.

23. The compound of claim 2, wherein X is N, and RC is oxazolyl or isoxazolyl.

24. A pharmaceutical composition comprising the compound of claim 1, or a pharmaceutically acceptable salt thereof, and at least one pharmaceutically acceptable excipient.

25. The compound of claim 1, or a pharmaceutically acceptable salt thereof, wherein o is an integer selected between 1 and 3 and each JD is independently selected from halogen, a C1-6 aliphatic, —N(RD)2, —N(Rd)C(O)RD, —N(Rd)C(O)ORD, —N(Rd)C(O)N(RD)2, —SO2RD, —SO2N(RD)2, —N(Rd)SO2RD, —SRD, —ORD or an optionally substituted C3-8 cycloaliphatic ring.