Substituted pyridazines as prostacyclin receptor modulators

Patent metadata

Field	Value
Publication number	US-10138210-B2
Application number	US-201615230825-A
Country	US
Kind code	B2
Filing date	Aug 8, 2016
Priority date	Dec 8, 2008
Publication date	Nov 27, 2018
Grant date	Nov 27, 2018

Abstract

Cyclohexane derivatives of Formula Ia and pharmaceutical compositions thereof that modulate the activity of the PGI2 receptor. Compounds of the present invention and pharmaceutical compositions thereof are directed to methods useful in the treatment of: pulmonary arterial hypertension (PAH) and related disorders; platelet aggregation; coronary artery disease; myocardial infarction; transient ischemic attack; angina; stroke; ischemia-reperfusion injury; restenosis; atrial fibrillation; blood clot formation in an angioplasty or coronary bypass surgery individual or in an individual suffering from atrial fibrillation; atherosclerosis; atherothrombosis; asthma or a symptom thereof; a diabetic-related disorder such as diabetic peripheral neuropathy, diabetic nephropathy or diabetic retinopathy; glaucoma or other disease of the eye with abnormal intraocular pressure; hypertension; inflammation; psoriasis; psoriatic arthritis; rheumatoid arthritis; Crohn's disease; transplant rejection; multiple sclerosis; systemic lupus erythematosus (SLE); ulcerative colitis; ischemia-reperfusion injury; restenosis; atherosclerosis; acne; type 1 diabetes; type 2 diabetes; sepsis; and chronic obstructive pulmonary disorder (COPD).

First claim

What is claimed is:

1. A compound selected from compounds of Formula Ia and pharmaceutically acceptable salts, solvates and hydrates thereof:

wherein:
R 1 is selected from: H and C 1 -C 8 alkyl;
R 2 and R 3 are each independently selected from: H, C 1 -C 8 alkyl, aryl and heteroaryl; wherein said C 1 -C 8 alkyl, aryl and heteroaryl are each optionally substituted with one or more substituents each independently selected from: C 1 -C 8 alkyl, C 1 -C 8 alkoxy, C 1 -C 8 alkylthio, aryl, C 1 -C 8 haloalkyl and halogen; and
X is CH.

2. The compound according to claim 1 , wherein R 1 is H.

3. The compound according to claim 1 , wherein R 1 is C 1 -C 6 alkyl.

4. The compound according to claim 1 , wherein R 2 is selected from: C 1 -C 8 alkyl, aryl and heteroaryl; wherein said C 1 -C 8 alkyl, aryl and heteroaryl are each optionally substituted with one or more substituents each independently selected from: C 1 -C 8 alkyl, C 1 -C 8 alkoxy, C 1 -C 8 alkylthio, aryl, C 1 -C 8 haloalkyl and halogen.

5. The compound according to claim 1 , wherein R 2 is selected from: C 1 -C 8 alkyl, aryl and heteroaryl; wherein said C 1 -C 8 alkyl, aryl and heteroaryl are each optionally substituted with one or more substituents each independently selected from: chloro, ethyl, fluoro, isopropyl, methoxy, methyl, methylthio, phenyl and trifluoromethyl.

6. The compound according to claim 1 , wherein R 2 is selected from: methyl, phenyl, pyridinyl, thiophen-2-yl and thiophen-3-yl; wherein said methyl, phenyl, pyridinyl, thiophen-2-yl and thiophen-3-yl are each optionally substituted with one or more substituents each independently selected from: chloro, ethyl, fluoro, isopropyl, methoxy, methyl, methylthio, phenyl and trifluoromethyl.

7. The compound according to claim 1 , wherein R 2 is selected from: 2,3-difluorophenyl, 2-chlorophenyl, 2-fluoro-4-methylphenyl, 2-fluorophenyl, 2-methoxyphenyl, 3-chlorophenyl, 3-fluoro-4-methylphenyl, 3-fluoro-5-methoxyphenyl, 3-fluorophenyl, 3-methoxyphenyl, 4-(methylthio)phenyl, 4-(trifluoromethyl)phenyl, 4-chloro-2-fluorophenyl, 4-chloro-3-fluorophenyl, 4-chlorophenyl, 4-ethylphenyl, 4-fluorophenyl, 4-isopropylphenyl, 4-methoxyphenyl, 5-methylpyridin-3-yl, 6-chloropyridin-3-yl, 6-methylpyridin-3-yl, benzhydryl, phenyl, p-tolyl, pyridin-3-yl, pyridin-4-yl, thiophen-2-yl and thiophen-3-yl.

8. The compound according to claim 1 , wherein R 3 is selected from: H, C 1 -C 8 alkyl, aryl and heteroaryl; wherein said C 1 -C 8 alkyl, aryl and heteroaryl are each optionally substituted with one or more substituents each independently selected from: C 1 -C 8 alkyl, C 1 -C 8 alkoxy and halogen.

9. The compound according to claim 1 , wherein R 3 is selected from: H, C 1 -C 8 alkyl, aryl and heteroaryl; wherein said C 1 -C 8 alkyl, aryl and heteroaryl are each optionally substituted with one or more substituents each independently selected from: chloro, fluoro, methoxy and methyl.

10. The compound according to claim 1 , wherein R 3 is selected from: H, 1H-pyrazol-4-yl, phenyl, pyridinyl and thiophen-2-yl; wherein said phenyl, pyridinyl and thiophen-2-yl are each optionally substituted with one or more substituents each independently selected from: chloro, fluoro, methoxy and methyl.

11. The compound according to claim 1 , wherein R 3 is selected from: H, 1H-pyrazol-4-yl, 2,3-difluorophenyl, 2-chlorophenyl, 2-chloropyridin-4-yl, 2-fluoro-3-methoxyphenyl, 2-fluoropyridin-3-yl, 2-fluoropyridin-4-yl, 2-methoxyphenyl, 2-methylpyridin-4-yl, 3,4-dichlorophenyl, 3,5-dichlorophenyl, 3-chloro-2-fluorophenyl, 3-chloro-4-fluorophenyl, 3-chlorophenyl, 3-fluoro-5-methoxyphenyl, 3-fluorophenyl, 3-methoxyphenyl, 4-chlorophenyl, 4-fluorophenyl, 4-methoxyphenyl, 4-methylthiophen-2-yl, 5-chloro-2-fluorophenyl, 5-chloro-pyridin-3-yl, 5-methylpyridin-3-yl, 5-methylthiophen-2-yl, 6-fluoropyridin-3-yl, m-tolyl, phenyl, p-tolyl, pyridin-3-yl, pyridin-4-yl and thiophen-2-yl.

12. The compound according to claim 1 , wherein R 2 and R 3 are each independently selected from: H, C 1 -C 8 alkyl, aryl and heteroaryl; wherein said C 1 -C 8 alkyl, aryl and heteroaryl are each optionally substituted with one or more substituents each independently selected from: chloro, ethyl, fluoro, isopropyl, methoxy, methyl, methylthio, phenyl and trifluoromethyl.

13. The compound according to claim 1 , wherein R 2 and R 3 are each independently selected from: H, 1H-pyrazol-4-yl, methyl, phenyl, pyridinyl, thiophen-2-yl and thiophen-3-yl; wherein said methyl, phenyl, pyridinyl, thiophen-2-yl and thiophen-3-yl are each optionally substituted with one or more substituents each independently selected from: chloro, ethyl, fluoro, isopropyl, methoxy, methyl, methylthio, phenyl and trifluoromethyl.

14. The compound according to claim 1 , wherein R 2 and R 3 are each independently selected from: H, 1H-pyrazol-4-yl, 2,3-difluorophenyl, 2-chlorophenyl, 2-chloropyridin-4-yl, 2-fluoro-3-methoxyphenyl, 2-fluoro-4-methylphenyl, 2-fluorophenyl, 2-fluoropyridin-3-yl, 2-fluoropyridin-4-yl, 2-methoxyphenyl, 2-methylpyridin-4-yl, 3,4-dichlorophenyl, 3,5-dichlorophenyl, 3-chloro-2-fluorophenyl, 3-chloro-4-fluorophenyl, 3-chlorophenyl, 3-fluoro-4-methylphenyl, 3-fluoro-5-methoxyphenyl, 3-fluorophenyl, 3-methoxyphenyl, 4-(methylthio)phenyl, 4-(trifluoromethyl)phenyl, 4-chloro-2-fluorophenyl, 4-chloro-3-fluorophenyl, 4-chlorophenyl, 4-ethylphenyl, 4-fluorophenyl, 4-isopropylphenyl, 4-methoxyphenyl, 4-methylthiophen-2-yl, 5-chloro-2-fluorophenyl, 5-chloro-pyridin-3-yl, 5-methylpyridin-3-yl, 5-methylthiophen-2-yl, 6-chloropyridin-3-yl, 6-fluoropyridin-3-yl, 6-methylpyridin-3-yl, benzhydryl, m-tolyl, phenyl, p-tolyl, pyridin-3-yl, pyridin-4-yl, thiophen-2-yl and thiophen-3-yl.

15. The compound according to claim 1 , selected from compounds of Formula Ig and pharmaceutically acceptable salts, solvates and hydrates thereof:

wherein:
R 2 is selected from: C 1 -C 8 alkyl, aryl and heteroaryl; wherein said C 1 -C 8 alkyl, aryl and heteroaryl are each optionally substituted with one or more substituents each independently selected from: C 1 -C 8 alkyl, C 1 -C 8 alkoxy, C 1 -C 8 alkylthio, aryl, C 1 -C 8 haloalkyl and halogen; and
R 3 is selected from: H, C 1 -C 8 alkyl, aryl and heteroaryl; wherein said C 1 -C 8 alkyl, aryl and heteroaryl are each optionally substituted with one or more substituents each independently selected from: C 1 -C 8 alkyl, C 1 -C 8 alkoxy and halogen.

16. The compound according to claim 1 , selected from compounds of Formula Ig and pharmaceutically acceptable salts, solvates and hydrates thereof:

wherein:
R 2 is selected from: 2,3-difluorophenyl, 2-chlorophenyl, 2-fluoro-4-methylphenyl, 2-fluorophenyl, 2-methoxyphenyl, 3-chlorophenyl, 3-fluoro-4-methylphenyl, 3-fluoro-5-methoxyphenyl, 3-fluorophenyl, 3-methoxyphenyl, 4-(methylthio)phenyl, 4-(trifluoromethyl)phenyl, 4-chloro-2-fluorophenyl, 4-chloro-3-fluorophenyl, 4-chlorophenyl, 4-ethylphenyl, 4-fluorophenyl, 4-isopropylphenyl, 4-methoxyphenyl, 5-methylpyridin-3-yl, 6-chloropyridin-3-yl, 6-methylpyridin-3-yl, benzhydryl, phenyl, p-tolyl, pyridin-3-yl, pyridin-4-yl, thiophen-2-yl and thiophen-3-yl; and
R 3 is selected from: H, 1H-pyrazol-4-yl, 2,3-difluorophenyl, 2-chlorophenyl, 2-chloropyridin-4-yl, 2-fluoro-3-methoxyphenyl, 2-fluoropyridi

Assignees

• Arena Pharm Inc

Inventors

• Tran Thuy-Anh
• Hayashi Rena
• Ibarra Jason B
• Ullman Brett
• Zou Ning

Classifications

• A61P9/12

  Antihypertensives · CPC title

• A61P9/00

  Drugs for disorders of the cardiovascular system · CPC title

• A61P7/02

  Antithrombotic agents; Anticoagulants; Platelet aggregation inhibitors · CPC title

• A61P37/06

  Immunosuppressants, e.g. drugs for graft rejection · CPC title

• A61P9/10

  for treating ischaemic or atherosclerotic diseases, e.g. antianginal drugs, coronary vasodilators, drugs for myocardial infarction, retinopathy, cerebrovascula insufficiency, renal arteriosclerosis · CPC title