IP Library Granted Patent US 8,722,691
Granted Patent B2
US 8,722,691 · App. 12/295,555 · Granted May 13, 2014

Azolopyrimidines as inhibitors of cannabinoid 1 activity

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Quick Facts
Patent No.
US 8,722,691
App. No.
12/295,555
Granted
May 13, 2014
Kind
B2
Abstract

The invention provides compounds, pharmaceutical compositions comprising such compounds, and methods of using such compounds to treat or prevent diseases or disorders associated with the activity of Cannabinoid Receptor 1 (CB1). The compounds are of the Formulae Ia, Ic, Ig and Ik:

Claims (42)

1. A compound selected from Formula Ia:

in which:

R 2 is selected from halo, pyrazinyl, pyridazinyl, pyrimidinyl, pyridinyl, pyridinyl-N-oxide and phenyl; wherein said pyrimidinyl, pyridinyl, pyridinyl-N-oxide, pyrazinyl and phenyl of R 2 is optionally substituted with a group selected from amino;

R 3 is selected from hydrogen, methyl-sulfonyl, methyl-sulfoxide and dimethyl-amino-carbonyl; and

R 4 is selected from, amino-carbonyl, and methyl-sulfonyl.

2. The compound of claim 1 selected from:

6-[4-(6-amino-pyridazin-3-yl)-phenyl]-5-(4-chloro-phenyl)-1-(3-methanesulfonyl-phenyl)-1,5-dihydro-pyrazolo[3,4-d]pyrimidin-4-one;

3-[6-(4-bromo-phenyl)-5-(4-chloro-phenyl)-4-oxo-4,5-dihydro-pyrazolo[3,4-d]pyrimidin-1-yl]-benzamide;

3-[6-[4-(6-amino-pyridin-3-yl)-phenyl]-5-(4-chloro-phenyl)-4-oxo-4,5-dihydro-pyrazolo[3,4-d]pyrimidin-1-yl]-benzamide;

6-[4-(6-amino-pyridin-3-yl)-phenyl]-5-(4-chloro-phenyl)-1-(3-methanesulfonyl-phenyl)-1,5-dihydro-pyrazolo[3,4-d]pyrimidin-4-one;

6-[4-(5-amino-pyridin-2-yl)-phenyl]-5-(4-chloro-phenyl)-1-(3-methanesulfonyl-phenyl)-1,5-dihydro-pyrazolo[3,4-d]pyrimidin-4-one;

6-[4-(5-amino-pyrazin-2-yl)-phenyl]-5-(4-chloro-phenyl)-1-(3-methanesulfonyl-phenyl)-1,5-dihydro-pyrazolo[3,4-d]pyrimidin-4-one;

6-[4-(2-amino-pyrimidin-5-yl)-phenyl]-5-(4-chloro-phenyl)-1-(3-methanesulfonyl-phenyl)-1,5-dihydro-pyrazolo[3,4-d]pyrimidin-4-one;

3-[5-(4-chloro-phenyl)-4-oxo-6-(4-pyrazin-2-yl-phenyl)-4,5-dihydro-pyrazolo[3,4-d]pyrimidin-1-yl1-benzamide;

5-(4-chlorophenyl)-1-(3-(methylsulfonyl)phenyl)-6-(4-(pyrazin-2-yl)phenyl)-1H-pyrazolo[3,4-d]pyrimidin-4(5H)-one;

5-(4-chloro-phenyl)-1-(3-methanesulfonyl-phenyl)-6-(4-pyrimidin-5-yl-phenyl)-1,5-dihydro-pyrazolo[3,4-d]pyrimidin-4-one; and

5-(4-chloro-phenyl)-1-(3-methanesulfonyl-phenyl)-6-(4-pyrimidin-2-yl-phenyl)-1,5-dihydro-pyrazolo[3,4-d]pyrimidin-4-one.

3. A method of treating a disease mediated by the Cannabinoid-1 wherein said disease is an eating disorder associated with excessive food intake, comprising administration of to a patient in need of such treatment of a therapeutically effective amount of a compound of claim 1 .

4. The method according to claim 3 wherein the eating disorder associated with excessive food intake is selected from obesity, bulimia nervosa, and compulsive eating disorders.

5. The method according to claim 4 wherein the eating disorder associated with excessive food intake is obesity.

6. A method of preventing obesity in a person at risk for obesity comprising administration to said person of about 0.001 mg to about 100 mg per kg of a compound selected from a compound of claim 1 .

7. A composition comprising a pharmaceutically acceptable carrier and a compound selected from a compound of claim 1 .

8. A compound selected from Formula Ia:

in which:

R 2 is selected from halo, pyrazinyl, pyridazinyl, pyrimidinyl, pyridinyl, pyridinyl-N-oxide and phenyl; wherein said pyrimidinyl, pyridinyl, pyridinyl-N-oxide, pyrazinyl and phenyl of R 2 is optionally substituted with a radical selected from amino, halo, amino-sulfonyl and phenyl;

R 3 is selected from hydrogen, methyl-sulfonyl, methyl-sulfoxide and dimethyl-amino-carbonyl; and

R 4 is selected from carbamimidoyl, tetrazolyl, amino-sulfonyl, and methyl-sulfonyl-amino.

9. The compound of claim 8 selected from:

3-(6-(4-bromophenyl)-5-(4-chlorophenyl)-4-oxo-4,5-dihydro-1H-pyrazolo[3,4-d]pyrimidin-1-yl)benzenesulfonamide;

3-[6-[4-(6-amino-pyridin-3-yl)-phenyl]-5-(4-chloro-phenyl)-4-oxo-4,5-dihydro-pyrazolo[3,4-d]pyrimidin-1-yl]-benzamidine;

3-[6-[4-(5-amino-pyridin-2-yl)-phenyl]-5-(4-chloro-phenyl)-4-oxo-4,5-dihydro-pyrazolo[3,4-d]pyrimidin-1-yl]-benzamidine;

6-[4-(6-amino-pyridin-3-yl)-phenyl]-5-(4-chloro-phenyl)-1-[3-(1H-tetrazol-5-yl)-phenyl]-1,5-dihydro-pyrazolo[3,4-d]pyrimidin-4-one;

6-[4-(5-amino-pyridin-2-yl)-phenyl]-5-(4-chloro-phenyl)-1-[3-(1H-tetrazol-5-yl)-phenyl]-1,5-dihydro-pyrazolo[3,4-d]pyrimidin-4-one;

N-(3-(6-(4-(6-aminopyridin-3-yl)phenyl)-5-(4-chlorophenyl)-4-oxo-4,5-dihydro-1H-pyrazolo[3,4-d]pyrimidin-1-yl)phenyl)methanesulfonamide;

N-(3-(6-(4-(5-aminopyridin-2-yl)phenyl)-5-(4-chlorophenyl)-4-oxo-4,5-dihydro-1H-pyrazolo[3,4-d]pyrimidin-1-yl)phenyl)methanesulfonamide;

N-(3-(5-(4-chlorophenyl)-4-oxo-6-(4-(pyrimidin-2-yl)phenyl)-4,5-dihydro-1H-pyrazolo[3,4-d]pyrimidin-1-yl)phenyl)methanesulfonamide;

N-{3-[5-(4-chloro-phenyl)-4-oxo-6-(4-pyrimidin-5-yl-phenyl)-4,5-dihydro-pyrazolo[3,4-d]pyrimidin-1-yl]-phenyl}-methane sulfonamide;

3-[5-(4-chloro-phenyl)-4-oxo-6-(4-pyrazin-2-yl-phenyl)-4,5-dihydro-pyrazolo[3,4-d]pyrimidin-1-yl]-benzamidine;

N-(3-(5-(4-chlorophenyl)-4-oxo-6-(4-(pyridazin-3-yl)phenyl)-4,5-dihydro-1H-pyrazolo[3,4-d]pyrimidin-1-yl)phenyl)methanesulfonamide;

N-(3-(5-(4-chlorophenyl)-4-oxo-6-(4-(pyrazin-2-yl)phenyl)-4,5-dihydro-1H-pyrazolo[3,4-d]pyrimidin-1-yl)phenyl)methanesulfonamide;

3-(5-(4-chlorophenyl)-4-oxo-6-(4-(pyrazin-2-yl)phenyl)-4,5-dihydro-1H-pyrazolo[3,4-d]pyrimidin-1-yl)benzenesulfonamide; and

3-[6-[4-(5-amino-pyridin-2-yl)-phenyl]-5-(4-chloro-phenyl)-4-oxo-4,5-dihydro-pyrazolo[3,4-d]pyrimidin-1-yl]-benzene sulfonamide.

Assignments (3)
MERGER Recorded Apr 16, 2015
From: IRM LLC
To: NOVARTIS INTERNATIONAL PHARMACEUTICAL LTD.
Reel/Frame 035444/0397 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Apr 16, 2015
From: NOVARTIS INTERNATIONAL PHARMACEUTICAL LTD.
To: NOVARTIS AG
Reel/Frame 035453/0224 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Oct 17, 2013
From: HE, XIAOHUI; YANG, KUNYONG; LIU, HONG; ELLIS, DAVID ARCHER
To: IRM LLC
Reel/Frame 031429/0169 →