Enantiomerically pure aminoheteroaryl compounds as protein kinase inhibitors

Abstract

Enantiomerically pure compound of formula 1 are provided, as well as methods for their synthesis and use. Preferred compounds are potent inhibitors of the c-Met protein kinase, and are useful in the treatment of abnormal cell growth disorders, such as cancers.

We claim: 
     
         1 . An enantiomerically pure compound of formula 1 
       
         
           
           
               
               
           
         
       
       wherein:
 Y is N or CR 12 ; 
 R 1  is selected from hydrogen, halogen, C 6-12  aryl, 5-12 membered heteroaryl, C 3-12  cycloalkyl, 3-12 membered heteroalicyclic, —O(CR 6 R 7 ) n R 4 , —C(O)R 4 , —C(O)OR 4 , —CN, —NO 2 , —S(O) m R 4 , —SO 2 NR 4 R 5 , —C(O)NR 4 R 5 , —NR 4 C(O)R 5 , —C(═NR 6 )NR 4 R 5 , C 1-8  alkyl, C 2-8  alkenyl, and C 2-8  alkynyl; and each hydrogen in R 1  is optionally substituted by one or more R 3  groups; 
 R 2  is hydrogen, halogen, C 1-12  alkyl, C 2-12  alkenyl, C 2-12  alkynyl, C 3-12  cycloalkyl, C 6-12  aryl, 3-12 membered heteroalicyclic, 5-12 membered heteroaryl, —S(O) m R 4 , —SO 2 NR 4 R 5 , —S(O) 2 OR 4 , —NO 2 , —NR 4 R 5 , —(CR 6 R 7 ) n OR 4 , —CN, —C(O)R 4 , —OC(O)R 4 , —O(CR 6 R 7 ) n R 4 , —NR 4 C(O)R 5 , —(CR 6 R 7 ) n C(O)OR 4 , —(CR 6 R 7 ) n NCR 4 R 5 , —C(═NR 6 )NR 4 R 5 , —NR 4 C(O)NR 5 R 6 , —NR 4 S(O) p R 5  or —C(O)NR 4 R 5 , and each hydrogen in R 2  is optionally substituted by R 8 ; 
 each R 3  is independently halogen, C 1-12  alkyl, C 2-12  alkenyl, C 2-12  alkynyl, C 3-12  cycloalkyl, C 6-12  aryl, 3-12 membered heteroalicyclic, 5-12 membered heteroaryl, —S(O) m R 4 , —SO 2 NR 4 R 5 , —S(O) 2 OR 4 , —NO 2 , —NR 4 R 5 , —(CR 6 R 7 ) n OR 4 , —CN, —C(O)R 4 , —OC(O)R 4 , —O(CR 6 R 7 ) n R 4 , —NR 4 C(O)R 5 , —(CR 6 R 7 ) n C(O)OR 4 , —(CR 6 R 7 ) n OR 4 , —(CR 6 R 7 ) n C(O)NR 4 R 5 , —(CR 6 R 7 ) n NCR 4 R 5 , —C(═NR 6 )NR 4 R 5 , —NR 4 C(O)NR 5 R 6 , —NR 4 S(O) p R 5  or —C(O)NR 4 R 5 , each hydrogen in R 3  is optionally substituted by R 8 , and R 3  groups on adjacent atoms may combine to form a C 6-12  aryl, 5-12 membered heteroaryl, C 3-12  cycloalkyl or 3-12 membered heteroalicyclic group; 
 each R 4 , R 5 , R 6  and R 7  is independently hydrogen, halogen, C 1-12  alkyl, C 2-12  alkenyl, C 2-12  alkynyl, C 3-12  cycloalkyl, C 6-12  aryl, 3-12 membered heteroalicyclic, 5-12 membered heteroaryl; or any two of R 4 , R 5 , R 6  and R 7  bound to the same nitrogen atom may, together with the nitrogen to which they are bound, be combined to form a 3 to 12 membered heteroalicyclic or 5-12 membered heteroaryl group optionally containing 1 to 3 additional heteroatoms selected from N, O, and S; or any two of R 4 , R 5 , R 6  and R 7  bound to the same carbon atom may be combined to form a C 3-12  cycloalkyl, C 6-12  aryl, 3-12 membered heteroalicyclic or 5-12 membered heteroaryl group; and each hydrogen in R 4 , R 5 , R 6  and R 7  is optionally substituted by R 8 ; 
 each R 8  is independently halogen, C 1-12  alkyl, C 2-12  alkenyl, C 2-12  alkynyl, C 3-12  cycloalkyl, C 6-12  aryl, 3-12 membered heteroalicyclic, 5-12 membered heteroaryl, —NH 2 , —CN, —OH, —O—C 1-12  alkyl, —O—(CH 2 ) n C 3-12  cycloalkyl, —O—(CH 2 ) n C 6-12  aryl, —O—(CH 2 ) n (3-12 membered heteroalicyclic) or —O—(CH 2 ) n (5-12 membered heteroaryl); and each hydrogen in R 8  is optionally substituted by R 11 ; 
 each R 9  and R 10  is independently hydrogen, halogen, C 1-12  alkyl, C 3-12  cycloalkyl, C 6-12  aryl, 3-12 membered heteroalicyclic, 5-12 membered heteroaryl, —S(O) m R 4 , —SO 2 NR 4 R 5 , —S(O) 2 OR 4 , —NO 2 , —NR 4 R 5 , —(CR 6 R 7 ) n OR 4 , —CN, —C(O)R 4 , —OC(O)R 4 , —NR 4 C(O)R 5 , —(CR 6 R 7 ) n C(O)OR 4 , —(CR 6 R 7 ) n NCR 4 R 5 , —NR 4 C(O)NR 5 R 6 , —NR 4 S(O) p R 5  or —C(O)NR 4 R 5 ; R 9  or R 10  may combine with a ring atom of A or a substituent of A to form a C 3-12  cycloalkyl, 3-12 membered heteroalicyclic, C 6-12  aryl or 5-12 membered heteroaryl ring fused to A; and each hydrogen in R 9  and R 10  is optionally substituted by R 3 ; 
 each R 11  is independently halogen, C 1-12  alkyl, C 1-12  alkoxy, C 3-12  cycloalkyl, C 6-12  aryl, 3-12 membered heteroalicyclic, 5-12 membered heteroaryl, —O—C 1-12  alkyl, —O—(CH 2 ) n C 3-12  cycloalkyl, —O—(CH 2 ) n C 6-12  aryl, —O—(CH 2 ) n (3-12 membered heteroalicyclic), —O—(CH 2 ) n (5-12 membered heteroaryl) or —CN, and each hydrogen in R 11  is optionally substituted by halogen, —OH, —CN, —C 1-12  alkyl which may be partially or fully halogenated, —O—C 1-12  alkyl which may be partially or fully halogenated, —CO, —SO or —SO 2 ; 
 R 12  is hydrogen, halogen, C 1-12  alkyl, C 2-12  alkenyl, C 2-12  alkynyl, C 3-12  cycloalkyl, C 6-12  aryl, 3-12 membered heteroalicyclic, 5-12 membered heteroaryl, —S(O) m R 4 , —SO 2 NR 4 R 5 , —S(O) 2 OR 4 , —NO 2 , —NR 4 R 5 , —(CR 6 R 7 ) n OR 4 , —CN, —C(O)R 4 , —OC(O)R 4 , —O(CR 6 R 7 ) n R 4 , —NR 4 C(O)R 5 , —(CR 6 R 7 ) n C(O)OR 4 , —(CR 6 R 7 ) n NCR 4 R 5 , —C(═NR 6 )NR 4 R 5 , —NR 4 C(O)NR 5 R 6 , —NR 4 S(O) p R 5  or —C(O)NR 4 R 5 , and each hydrogen in R 12  is optionally substituted by R 3 ; 
 each R 13  is independently halogen, C 1-12  alkyl, C 2-12  alkenyl, C 2-12  alkynyl, C 3-12  cycloalkyl, C 6-12  aryl, 3-12 membered heteroalicyclic, 5-12 membered heteroaryl, —S(O) m R 4 , —SO 2 NR 4 R 5 , —S(O) 2 OR 4 , —NO 2 , —NR 4 R 5 , —(CR 6 R 7 ) n OR 4 , —CN, —C(O)R 4 , —OC(O)R 4 , —O(CR 6 R 7 ) n R 4 , —NR 4 C(O)R 5 , —(CR 6 R 7 ) n C(O)OR 4 , —(CR 6 R 7 ) n OR 4 , —(CR 6 R 7 ) n C(O)NR 4 R 5 , —(CR 6 R 7 ) n NCR 4 R 5 , —C(═NR 6 )NR 4 R 5 , —NR 4 C(O)NR 5 R 6 , —NR 4 S(O) p R 5 , —C(O)NR 4 R 5 , —(CR 6 R 7 ) n (3-12 membered heteroalicyclic), —(CR 6 R 7 ) n C 3-12  cycloalkyl), —(CR 6 R 7 ) n (C 6-12  aryl), —(CR 6 R 7 ) n (5-12 membered heteroaryl), —(CR 6 R 7 ) n C(O)NR 4 R 5 , or —(CR 6 R 7 ) n C(O)R 4 , R 13  groups on adjacent atoms may combine to form a C 6-12  aryl, 5-12 membered heteroaryl, C 3-12  cycloalkyl or 3-12 membered heteroalicyclic group, and each hydrogen in R 13  is optionally substituted by R 3 ; 
 each m is independently 0, 1 or 2; 
 each n is independently 0, 1, 2, 3 or 4; 
 each p is independently 1 or 2; 
 
       or a pharmaceutically acceptable salt thereof. 
     
     
         2 . The compound of  claim 1 , wherein R 2  is hydrogen. 
     
     
         3 . The compound of  claim 1 , wherein Y is N. 
     
     
         4 . The compound of  claim 1 , wherein Y is N and R 2  is hydrogen. 
     
     
         5 . The compound of  claim 1 , wherein Y is CR 12 . 
     
     
         6 . The compound of  claim 1 , wherein Y is CR 12  and R 12  is H. 
     
     
         7 . The compound of  claim 1 , wherein R 1  is a furan, thiopene, pyrrole, pyrroline, pyrrolidine, dioxolane, oxazole, thiazole, imidazole, imidazoline, imidazolidine, pyrazole, pyrazoline, pyrazolidine, isoxazole, isothiazole, oxadiazole, triazole, thiadiazole, pyran, pyridine, piperidine, dioxane, morpholine, dithiane, thiomorpholine, pyridazine, pyrimidine, pyrazine, piperazine, triazine, trithiane, azetidine or phenyl group, and each hydrogen in R 1  is optionally substituted by R 3 . 
     
     
         8 . The compound of  claim 1 , wherein R 1  is a 7 to 12-membered fused ring heteroaryl group, and each hydrogen in R 1  is optionally substituted by one or more R 3  groups. 
     
     
         9 . The compound of  claim 1 , wherein R 1  is hydrogen. 
     
     
         10 . The compound of  claim 1 , wherein R 1  is a halogen. 
     
     
         11 . An enantiomerically pure compound of formula 1a 
       
         
           
           
               
               
           
         
       
       wherein:
 Y is N or CH; 
 R 1  is a furan, thiopene, pyrrole, pyrroline, pyrrolidine, dioxolane, oxazole, thiazole, imidazole, imidazoline, imidazolidine, pyrazole, pyrazoline, pyrazolidine, isoxazole, isothiazole, oxadiazole, triazole, thiadiazole, pyran, pyridine, piperidine, dioxane, morpholine, dithiane, thiomorpholine, pyridazine, pyrimidine, pyrazine, piperazine, triazine, trithiane, azitidine or phenyl group; and each hydrogen in R 1  is optionally substituted by R 3 ; 
 each R 3  is independently halogen, C 1-12  alkyl, C 2-12  alkenyl, C 2-12  alkynyl, C 3-12  cycloalkyl, C 6-12  aryl, 3-12 membered heteroalicyclic, 5-12 membered heteroaryl, —S(O) m R 4 , —SO 2 NR 4 R 5 , —S(O) 2 OR 4 , —NO 2 , —NR 4 R 5 , —(CR 6 R 7 ) n OR 4 , —CN, —C(O)R 4 , —OC(O)R 4 , —O(CR 6 R 7 ) n R 4 , —NR 4 C(O)R 5 , —(CR 6 R 7 ) n C(O)OR 4 , —(CR 6 R 7 ) n OR 4 , —(CR 6 R 7 ) n C(O)NR 4 R 5 , —(CR 6 R 7 ) n NCR 4 R 5 , —C(═NR 6 )NR 4 R 5 , —NR 4 C(O)NR 5 R 6 , —NR 4 S(O) p R 5  or —C(O)NR 4 R 5 , each hydrogen in R 3  is optionally substituted by R 8 , and R 3  groups on adjacent atoms may combine to form a C 6-12  aryl, 5-12 membered heteroaryl, C 3-12  cycloalkyl or 3-12 membered heteroalicyclic group; 
 each R 4 , R 5 , R 6  and R 7  is independently hydrogen, halogen, C 1-12  alkyl, C 2-12  alkenyl, C 2-12  alkynyl, C 3-12  cycloalkyl, C 6-12  aryl, 3-12 membered heteroalicyclic, 5-12 membered heteroaryl; or any two of R 4 , R 5 , R 6  and R 7  bound to the same nitrogen atom may, together with the nitrogen to which they are bound, be combined to form a 3 to 12 membered heteroalicyclic or 5-12 membered heteroaryl group optionally containing 1 to 3 additional heteroatoms selected from N, O, and S; or any two of R 4 , R 5 , R 6  and R 7  bound to the same carbon atom may be combined to form a C 3-12  cycloalkyl, C 6-12  aryl, 3-12 membered heteroalicyclic or 5-12 membered heteroaryl group; and each hydrogen in R 4 , R 5 , R 6  and R 7  is optionally substituted by R 8 ; 
 each R 8  is independently halogen, C 1-12  alkyl, C 2-12  alkenyl, C 2-12  alkynyl, C 3-12  cycloalkyl, C 6-12  aryl, 3-12 membered heteroalicyclic, 5-12 membered heteroaryl, —NH 2 , —CN, —OH, —O—C 1-12  alkyl, —O—(CH 2 ) n C 3-12  cycloalkyl, —O—(CH 2 ) n C 6-12  aryl, —O—(CH 2 ) n (3-12 membered heteroalicyclic) or —O—(CH 2 ) n (5-12 membered heteroaryl); and each hydrogen in R 8  is optionally substituted by R 11 ; 
 each R 9  and R 10  is independently hydrogen, halogen, C 1-12  alkyl, C 3-12  cycloalkyl, C 6-12  aryl, 3-12 membered heteroalicyclic, 5-12 membered heteroaryl, —S(O) m R 4 , —SO 2 NR 4 R 5 , —S(O) 2 OR 4 , —NO 2 , —NR 4 R 5 , —(CR 6 R 7 ) n OR 4 , —CN, —C(O)R 4 , —OC(O)R 4 , —NR 4 C(O)R 5 , —(CR 6 R 7 ) n C(O)OR 4 , —(CR 6 R 7 ) n NCR 4 R 5 , —NR 4 C(O)NR 5 R 6 , —NR 4 S(O) p R 5  or —C(O)NR 4 R 5 ; R 9  or R 10  may combine with a ring atom of A or a substituent of A to form a C 3-12  cycloalkyl, 3-12 membered heteroalicyclic, C 6-12  aryl or 5-12 membered heteroaryl ring fused to A; and each hydrogen in R 9  and R 10  is optionally substituted by R 3 ; 
 each R 11  is independently halogen, C 1-12  alkyl, C 1-12  alkoxy, C 3-12  cycloalkyl, C 6-12  aryl, 3-12 membered heteroalicyclic, 5-12 membered heteroaryl, —O—C 1-12  alkyl, —O—(CH 2 ) n C 3-12  cycloalkyl, —O—(CH 2 ) n C 6-12  aryl, —O—(CH 2 ) n (3-12 membered heteroalicyclic), —O—(CH 2 ) n (5-12 membered heteroaryl) or —CN, and each hydrogen in R 11  is optionally substituted by halogen, —OH, —CN, —C 1-12  alkyl which may be partially or fully halogenated, —O—C 1-12  alkyl which may be partially or fully halogenated, —CO, —SO or —SO 2 ; 
 each R 13  is independently halogen, C 1-12  alkyl, C 2-12  alkenyl, C 2-12  alkynyl, C 3-12  cycloalkyl, C 6-12  aryl, 3-12 membered heteroalicyclic, 5-12 membered heteroaryl, —S(O) m R 4 , —SO 2 NR 4 R 5 , —S(O) 2 OR 4 , —NO 2 , —NR 4 R 5 , —(CR 6 R 7 ) n OR 4 , —CN, —C(O)R 4 , —OC(O)R 4 , —O(CR 6 R 7 ) n R 4 , —NR 4 C(O)R 5 , —(CR 6 R 7 ) n C(O)OR 4 , —(CR 6 R 7 ) n OR 4 , —(CR 6 R 7 ) n C(O)NR 4 R 5 , —(CR 6 R 7 ) n NCR 4 R 5 , —C(═NR 6 )NR 4 R 5 , —NR 4 C(O)NR 5 R 6 , —NR 4 S(O) p R 5 , —C(O)NR 4 R 5 , —(CR 6 R 7 ) n (3-12 membered heteroalicyclic), —(CR 6 R 7 ) n C 3-12  cycloalkyl), —(CR 6 R 7 ) n (C 6-12  aryl), —(CR 6 R 7 ) n (5-12 membered heteroaryl), —(CR 6 R 7 ) n C(O)NR 4 R 5 , or —(CR 6 R 7 ) n C(O)R 4 , R 13  groups on adjacent atoms may combine to form a C 6-12  aryl, 5-12 membered heteroaryl, C 3-12  cycloalkyl or 3-12 membered heteroalicyclic group, and each hydrogen in R 13  is optionally substituted by R 3 ; 
 each m is independently 0, 1 or 2; 
 each n is independently 0, 1, 2, 3 or 4; 
 each p is independently 1 or 2; 
 
       or a pharmaceutically acceptable salt thereof. 
     
     
         12 . An enantiomerically pure compound selected from the group consisting of 5-Bromo-3-[(R)-1-(2,6-dichloro-3-fluoro-phenyl)-ethoxy]-pyrazin-2-ylamine; 5-iodo-3-[(R)1-(2,6-dichloro-3-fluoro-phenyl)-ethoxy]-pyridin-2-ylamine; 5-bromo-3-[1(R)-(2,6-dichloro-3-fluoro-phenyl)-ethoxy]-pyridin-2-ylamine; 4-{5-Amino-6-[(R)-1-(2,6-dichloro-3-fluoro-phenyl)-ethoxy]-pyrazin-2-yl}-benzoic acid; (4-{5-Amino-6-[(R)-1-(2,6-dichloro-3-fluoro-phenyl)-ethoxy]-pyrazin-2-yl}-phenyl)-piperazin-1-yl-methanone; 4-(4-{5-Amino-6-[(R)-1-(2,6-dichloro-3-fluoro-phenyl)-ethoxy]-pyrazin-2-yl}-benzoyl)-piperazine-1-carboxylic acid tert-butyl ester; 3-[(1R)-1-(2,6-dichloro-3-fluorophenyl)ethoxy]-5-[4-(piperazin-1-ylcarbonyl)phenyl]pyridin-2-amine; 4-{6-amino-5-[(1R)-1-(2,6-dichloro-3-fluorophenyl)ethoxy]pyridin-3-yl}-N-[2-(dimethylamino)ethyl]-N-methylbenzamide; (4-{6-amino-5-[(1R)-1-(2,6-dichloro-3-fluorophenyl)ethoxy]pyridin-3-yl}phenyl)methanol; 4-{6-amino-5-[(1R)-1-(2,6-dichloro-3-fluorophenyl)ethoxy]pyridin-3-yl}-N-[3-(dimethylamino)propyl]-N-methylbenzamide; tert-butyl 4-(4-{6-amino-5-[(1R)-1-(2,6-dichloro-3-fluorophenyl)ethoxy]pyridin-3-yl}benzoyl)piperazine-1-carboxylate; 3-[(R)-1-(2,6-Dichloro-3-fluoro-phenyl)-ethoxy]-5-[1-(1-methyl-piperidin-4-yl)-1H-pyrazol-4-yl]-pyridin-2-ylamine; 1-[4-(4-{6-Amino-5-[(R)-1-(2,6-dichloro-3-fluoro-phenyl)-ethoxy]-pyridin-3-yl}-pyrazol-1-yl)-piperidin-1-yl]-2-hydroxy-ethanone; 3-[(R)-1-(2,6-Dichloro-3-fluoro-phenyl)-ethoxy]-5-(1-piperidin-4-yl-1H-pyrazol-4-yl)-pyridin-2-ylamine; 3-[(R)-1-(2,6-Dichloro-3-fluoro-phenyl)-ethoxy]-5-(1-piperidin-4-yl-1H-pyrazol-4-yl)-pyridin-2-ylamine; 3-[(R)-1-(2,6-Dichloro-3-fluoro-phenyl)-ethoxy]-5-(1-piperidin-4-yl-1H-pyrazol-4-yl)-pyrazin-2-ylamine; 3-[(R)-1-(2,6-Dichloro-3-fluoro-phenyl)-ethoxy]-5-(1H-pyrazol-4-yl)-pyrazin-2-ylamine; 1-[4-(4-{5-Amino-6-[(R)-1-(2,6-dichloro-3-fluoro-phenyl)-ethoxy]-pyrazin-2-yl}-pyrazol-1-yl)-piperidin-1-yl]-2-hydroxy-ethanone; 3-[(R)-1-(2,6-Dichloro-3-fluoro-phenyl)ethoxy]-5-[1-(1-methyl-piperidin-4-yl)-1H-pyrazol-4-yl]-pyrazin-2-ylamine; 1-[4-(4-{5-Amino-6-[(R)-1-(2,6-dichloro-3-fluoro-phenyl)-ethoxy]-pyrazin-2-yl}-pyrazol-1-yl)-piperidin-1-yl]-2-dimethylamino-ethanone; 3-[(R)-1-(2-Chloro-3,6-difluoro-phenyl)-ethoxy]-5-(1-piperidin-4-yl-1H-pyrazol-4-yl)-pyridin-2-ylamine; or a pharmaceutically acceptable salt thereof. 
     
     
         13 . A method of treating abnormal cell growth in a mammal, the method comprising administering to the mammal a therapeutically effective amount of a compound or salt of  claim 1 . 
     
     
         14 . The method of  claim 13 , wherein the abnormal cell growth is cancer. 
     
     
         15 . The method of  claim 14 , wherein the cancer is selected from lung cancer, bone cancer, pancreatic cancer, skin cancer, cancer of the head or neck, cutaneous or intraocular melanoma, uterine cancer, ovarian cancer, rectal cancer, cancer of the anal region, stomach cancer, colon cancer, breast cancer, carcinoma of the fallopian tubes, carcinoma of the endometrium, carcinoma of the cervix, carcinoma of the vagina, carcinoma of the vulva, Hodgkin's Disease, cancer of the esophagus, cancer of the small intestine, cancer of the endocrine system, cancer of the thyroid gland, cancer of the parathyroid gland, cancer of the adrenal gland, sarcoma of soft tissue, cancer of the urethra, cancer of the penis, prostate cancer, chronic or acute leukemia, lymphocytic lymphomas, cancer of the bladder, cancer of the kidney or ureter, renal cell carcinoma, carcinoma of the renal pelvis, neoplasms of the central nervous system (CNS), primary CNS lymphoma, spinal axis tumors, brain stem glioma, pituitary adenoma, and combinations thereof. 
     
     
         16 . The method of  claim 13 , wherein the method further comprises co-administering an anti-tumor agent selected from the group consisting of mitotic inhibitors, alkylating agents, anti-metabolites, intercalating antibiotics, growth factor inhibitors, cell cycle inhibitors, enzymes, topoisomerase inhibitors, biological response modifiers, antibodies, cytotoxics, anti-hormones, anti-androgens and mixtures thereof.