Antifibrotic compounds and uses thereof

Abstract

The present invention provides compounds having the general structural formula (I) and pharmaceutically acceptable derivatives thereof, as described generally and in classes and subclasses herein, and additionally provides pharmaceutical compositions thereof, and methods for the use thereof for the treatment of any of a number of conditions or diseases involving abnormal or excessive fibrosis.

What is claimed is: 
     
         1 . A compound as described in Formula (II) below: 
       
         
           
           
               
               
           
         
         or a pharmaceutically acceptable salt thereof or a prodrug thereof; 
         where in R 1  is —COOR 5 ; 
         R 2  is H or a prodrug moiety, optionally a carbamate or amide; 
         R 3  and R 4  are independently H, aryl or heteroaryl, which may optionally be independently substituted with one or more lower alkyl, halogen, OR 6 , NO 2 , CN, NH 2 , NR 6 R 7 , NR 6 COR 7  or NR 6 SO 2 R 7  moieties; 
         R 5  is a lower alkyl group; 
         R 6  and R 7  are independently hydrogen or alkyl, cycloalkyl, heterocycle, cycloalkylalkyl, alkylcycloalkylalkyl, heterocycloalkyl or alkylheterocycloalkyl, which may optionally substituted with alkyl, OR 8 , COOR 8 , NR 8 R 9 , or NCOR 8  moieties; 
         R 8  and R 9  are independently H or a lower alkyl group; 
         and 
         B is O or S. 
       
     
     
         2 . The compound of  claim 1  wherein R 2  is hydrogen. 
     
     
         3 . The compound of  claim 1  wherein R 2  is a carbamate prodrug moiety or an amide prodrug moiety. 
     
     
         4 . The compound of  claim 1  wherein R 3  is hydrogen. 
     
     
         5 . The compound of  claim 1  wherein R 4  is phenyl. 
     
     
         6 . The compound of  claim 1  wherein R 5  is methyl. 
     
     
         7 . The compound of  claim 1  wherein R 6  is methyl. 
     
     
         8 . The compound of  claim 1  wherein R 7  is methylpiperazinylmethyl. 
     
     
         9 . (canceled) 
     
     
         10 . The compound of  claim 1  selected from (Z)-methyl 3-(((4-((2-(ethyl(methyl)amino)-2-oxoethyl)(methyl)amino)phenyl)amino)(phenyl)methylene)-2-oxo-2,3-dihydro-1H-pyrrolo[2,3-b]pyridine-6-carboxylate; (Z)-methyl 3-(((4-((3-(dimethylamino)-3-oxopropyl)(methyl)amino)phenyl)amino)(phenyl)methylene)-2-oxo-2,3-dihydro-1H-pyrrolo[2,3-b]pyridine-6-carboxylate; (Z)-methyl 3-(((4-(2-(1,1-dioxidothiomorpholino)-N-methylacetamido)phenyl)amino)(phenyl)methylene)-2-oxo-2,3-dihydro-1H-pyrrolo[2,3-b]pyridine-6-carboxylate; (Z)-methyl 3-(((4-(2-(dimethylamino)-N-methylacetamido)phenyl)amino)(phenyl)methylene)-2-oxo-2,3-dihydro-1H-pyrrolo[2,3-b]pyridine-6-carboxylate; (Z)-methyl 3-(((4-(N-methyl-2-(4-methylpiperazin-1-yl)acetamido)phenyl)amino)(phenyl)methylene)-2-oxo-2,3-dihydro-1H-pyrrolo[2,3-b]pyridine-6-carboxylate; and (Z)-methyl 3-(((4-(methyl(2-(4-methylpiperazin-1-yl)ethyl)amino)phenyl)amino)(phenyl)methylene)-2-oxo-2,3-dihydro-1H-pyrrolo[2,3-b]pyridine-6-carboxylate. 
     
     
         11 .- 14 . (canceled) 
     
     
         15 . A pharmaceutical composition comprising a compound of  claim 1  and a pharmaceutically acceptable carrier, diluent or excipient. 
     
     
         16 . A method reducing fibrosis in a subject in need thereof comprising administering to the subject a compound of  claim 1  or a pharmaceutical composition thereof. 
     
     
         17 . A method of prevention, treatment or lessening of the severity of a condition or disease associated with or characterized by increased, excessive or inappropriate fibrosis comprising administering to a subject in need thereof a compound of  claim 1  or a pharmaceutical composition thereof. 
     
     
         18 . The method of  claim 17  wherein the disease or condition is fibrotic liver disease, hepatic ischemia-reperfusion injury, cerebral infarction, ischemic heart disease, renal disease or lung (pulmonary) fibrosis. 
     
     
         19 . The method of  claim 17  wherein the disease or condition is liver fibrosis associated with hepatitis C, hepatitis B, delta hepatitis, chronic alcoholism, non-alcoholic steatohepatitis, extrahepatic obstructions, cholangiopathies, autoimmune liver disease, and inherited metabolic disorders; damaged and/or ischemic organs, transplants or grafts; ischemia/reperfusion injury; pancreatitis; stroke; cerebrovascular disease; myocardial ischemia; atherosclerosis; renal failure; renal fibrosis or idiopathic pulmonary fibrosis. 
     
     
         20 . The method of  claim 17  wherein the disease or condition is wounds; vascularization of a damaged and/or ischemic organ, transplant or graft; amelioration of ischemia/reperfusion injury in the brain, heart, liver, kidney, and other tissues and organs; normalization of myocardial perfusion as a consequence of chronic cardiac ischemia or myocardial infarction; development or augmentation of collateral vessel development after vascular occlusion or to ischemic tissues or organs; hepatic disease; lung fibrosis; radiocontrast nephropathy; fibrosis secondary to renal obstruction; renal trauma and transplantation; renal failure secondary to chronic diabetes and/or hypertension; amyotrophic lateral sclerosis, muscular dystrophy, scleroderma, chronic obstructive pulmonary disease, emphysema, diabetes mellitus, multiple sclerosis, trauma to the central nervous system, and hereditary neurodegenerative disorders. 
     
     
         21 . The method of  claim 17  wherein the disease or condition is stones in the bile duct, primary biliary cirrhosis, sclerosing cholangitis, Wilson's disease, hemochromatosis, alpha-1 antitrypsin deficiency, hepatic fibrosis or cirrhosis. 
     
     
         22 . The method of  claim 20  wherein the hereditary neurodegenerative disorder is a leukodystrophy. 
     
     
         23 . The method of  claim 22  wherein the leukodystrophy is metachromatic leukodystrophy, Refsum's disease, adrenoleukodystrophy, Krabbe's disease, phenylketonuria, Canavan disease, Pelizaeus-Merzbacher disease or Alexander's disease. 
     
     
         24 . A compound selected from (Z)-methyl 3-(((4-((2-(ethyl(methyl)amino)-2-oxoethyl)(methyl)amino)phenyl)amino)phenyl)methylene)-2-oxo-2,3-dihydro-1H-pyrrolo[2,3-b]pyridine-6-carboxylate; (Z)-methyl 3-(((4-((3-(dimethylamino)-3-oxopropyl)(methyl)amino)phenyl)amino)(phenyl)methylene)-2-oxo-2,3-dihydro-1H-pyrrolo[2,3-b]pyridine-6-carboxylate; (Z)-methyl 3-(((4-(2-(1,1-dioxidothiomorpholino)-N-methylacetamido)phenyl)amino)(phenyl)methylene)-2-oxo-2,3-dihydro-1H-pyrrolo[2,3-b]pyridine-6-carboxylate; (Z)-methyl 3-(((4-(2-(dimethylamino)-N-methylacetamido)phenyl)amino)(phenyl)methylene)-2-oxo-2,3-dihydro-1H-pyrrolo[2,3-b]pyridine-6-carboxylate; (Z)-methyl 3-(((4-(N-methyl-2-(4-methylpiperazin-1-yl)acetamido)phenyl)amino)(phenyl)methylene)-2-oxo-2,3-dihydro-1H-pyrrolo[2,3-b]pyridine-6-carboxylate; and (Z)-methyl 3-(((4-(methyl(2-(4-methylpiperazin-1-yl)ethyl)amino)phenyl)amino)(phenyl)methylene)-2-oxo-2,3-dihydro-1H-pyrrolo[2,3-b]pyridine-6-carboxylate.