Thiazole derivatives

Abstract

The invention provides compounds of formula 1 wherein R 1 , R 3 , and R 4 are as defined, and their pharmaceutically acceptable salts. Compounds of formula 1 are indicated to have activity inhibiting cdk5, cdk2, and GSK-3. Pharmaceutical compositions and methods comprising compounds of formula 1 for treating diseases and conditions comprising abnormal cell growth, such as cancer, and neurodegenerative diseases and conditions and those affected by dopamine neurotransmission are described. Also described are pharmaceutical compositions and methods comprising compounds of formula 1 for treating male fertility and sperm motility; diabetes mellitus; impaired glucose tolerance; metabolic syndrome or syndrome X; polycystic ovary syndrome; adipogenesis and obesity; myogenesis and frailty, for example age-related decline in physical performance; acute sarcopenia, for example muscle atrophy and/or cachexia associated with burns, bed rest, limb immobilization, or major thoracic, abdominal, and/or orthopedic surgery; sepsis; hair loss, hair thinning, and balding; and immunodeficiency.

What is claimed is:  
     
         1 . A compound of the formula  
       
         
           
           
               
               
           
         
       
       wherein R 1  is a straight chain or branched (C 1 -C 8 )alkyl, a straight chain or branched (C 2 -C 8 )alkenyl, a straight chain or branched (C 2 -C 8 )alkynyl, (C 3 -C 8 )cycloalkyl, (C 4 -C 8 )cycloalkenyl, (3-8 membered) heterocycloalkyl, (C 5 -C 11 )bicycloalkyl, (C 7 -C 11 )bicycloalkenyl, (5-11 membered) heterobicycloalkyl, (C 6 -C 14 ) aryl, (5-14 membered) heteroaryl, or ABN—; and wherein R 1  is optionally substituted with from one to six substituents R 5  independently selected from F, Cl, Br, I, nitro, cyano, —CF 3 , —NR 7 R 8 , —NR 7 C(═O)R 8 , —NR 7 C(═O)OR 8 , —NR 7 C(═O)NR 8 R 9 , —NR 7 S(═O) 2 R 8 , —NR 7 S(═O) 2 NR 8 R 9 , —OR 7 , —OC(═O)R 7 , —OC(═O)OR 7 , —C(═O)OR 7 , —C(═O)R 7 , —C(═O)NR 7 R 8 , —OC(═O) 2 NR 7 R 8 , —OC(═O)SR 7 , —SR 7 , —S(═O)R 7 , —S(═O) 2 R 7 , —S(═O) 2 NR 7 R 8 , and R 7 , 
 A and B are each independently selected from straight or branched (C 1 -C 8 )alkyl, straight chain or branched (C 2 -C 8 )alkenyl, straight chain or branched (C 2 -C 8 )alkynyl, (C 3 -C 6 )cycloalkyl, (C 4 -C 8 )cycloalkenyl, (3-8 membered) heterocycloalkyl, (C 5 -C 11 )bicycloalkyl, (C 7 -C 11 )bicycloalkenyl, and (5-11 membered) heterocycloalkyl; or A and B may be connected to form a 3-8 membered heterocyclic ring optionally containing one or two double bonds and optionally containing one or two further hetero atoms selected independently from O, S, and N; and A and B, or the heterocyclic ring formed thereby, can be optionally independently substituted with from one to six substituents R 5  independently selected from F, Cl, Br, I, nitro, cyano, —CF 3 , —NR 7 R 8 , —NR 7 C(═O)R 8 , —NR 7 C(═O)OR 8 , —NR 7 C(═O)NR 8 R 9 , —NR 7 S(═O) 2 R 8 , —NR 7 S(═O) 2 NR 8 R 9 , —OR 7 , —OC(═O)R 7 , —OC(═O)OR 7 , —C(═O)OR 7 , —C(═O)R 7 , —C(═O)NR 7 R 8 , —OC(═O)NR 7 R 8 , —OC(═O)SR 7 , —SR 7 , —S(═O)R 7 , —S(═O) 2 R 7 , —S(═O) 2 NR 7 R 8 , and R 7 ;  
 R 3  is —C(═O)NR 9 —, —C(═O)O—, —C(═O)(CR 10 R 11 ) n —, or —(CR 10 R 11 ) n —;  
 R 4  is a straight chain or a branched (C 1 -C 8 )alkyl, a straight chain or a branched (C 2 -C 8 )alkenyl, a straight chain or branched (C 2 -C 8  alkynyl), (C 3 -C 8 )cycloalkyl, (C 4 -C 8 )cycloalkenyl, (3-8 membered) heterocycloalkyl, (C 5 -C 11 )bicycloalkyl, (C 7 -C 11 )bicycloalkenyl, (5-11 membered) heterobicycloalkyl, (C 6 -C 14 )aryl, or (5-14 membered) heteroaryl; and wherein R 4  is optionally substituted with from one to three substitutents R 6  independently selected from F, Cl, Br, I, nitro, cyano, —CF 3 , —NR 7 R 8 , —NR 7 C(═O)R 8 , —NR 7 C(═O)OR 8 , —NR 7 C(═O)NR 8 R 9 , —NR 7 S(═O) 2 R 8 , —NR 7 S(═O) 2 NR 8 R 9 , —OR 7 , —OC(═O)R 7 , —OC(═O)OR 7 , —C(═O)OR 7 , —C(═O)R 7 , —C(═O)R 7 R 8 , —OC(═O)NR 7 R 8 , —OC(═O)SR 7 , —SR 7 , —S(═O)R 7 , —S(═O) 2 R 7 , —S(═O) 2 NR 7 R 8 , or R 7 ;  
 each R 7 , R 8 , and R 9  is independently selected from H, straight chain or branched (C 1 -C 8 )alkyl, straight chain or branched (C 2 -C 8 )alkenyl, straight chain or branched (C 2 -C 8  alkynyl), (C 3 -C 8 )cycloalkyl, (C 4 -C 8 )cycloalkenyl, (3-8 membered) heterocycloalkyl, (C 5 -C 11 )bicycloalkyl, (C 7 -C 11 )bicycloalkenyl, (5-11 membered) heterobicycloalkyl, (C 6 -C 14 )aryl, and (5-14 membered) heteroaryl, wherein R 7 , R 8 , and R 9  are each independently optionally substituted with from one to six substituents independently selected from F, Cl, Br, I, NO 2 , —CN, —CF 3 , —NR 10 R 11 , —NR 10 C(═O)R 11 , —NR 10 C(═O)OR 11 , —NR 10 C(═O)NR 11 R 12 , —NR 10 S(═O) 2 R 11 , —NR 10 S(═O) 2 NR 11 R 12 , —OR 10 , OC(═O)R 10 , —OC(═O)OR 10 , —OC(═O)NR 10 R 11 , —OC(═O)SR 10 , —SR 10 , —S(═O)R 10 , —S(═O) 2 R 10 , —S(═O) 2 NR 10 R 11 , —C(═O)R 10 , —C(═O)OR 10 , —C(═O)NR 10 R 11 , and R 10 ;  
 or, when R 7  and R 8  are as in NR 7 R 8 , they may instead optionally be connected to form with the nitrogen of NR 7 R 8  to which they are attached a heterocycloalkyl moiety of from three to seven ring members, said heterocycloalkyl moiety optionally comprising one or two further heteroatoms independently selected from N, O, and S;  
 each R 10 , R 11 , and R 12  is independently selected from H, straight chain or branched (C 1 -C 8 )alkyl, straight chain or branched (C 2 -C 8 )alkenyl, straight chain or branched (C 2 -C 8  alkynyl), (C 3 -C 8 )cycloalkyl, (C 4 -C 8 )cycloalkenyl, (3-8 membered) heterocycloalkyl, (C 5 -C 11 )bicycloalkyl, (C 7 -C 11 )bicycloalkenyl, (5-11 membered) heterobicycloalkyl, (C 6 -C 14 )aryl, and (5-14 membered) heteroaryl, wherein R 10 , R 11 , and R 12  are each independently optionally substituted with from one to six substituents independently selected from F, Cl, Br, I, NO 2 , —CN, —CF 3 , —NR 13 R 14 , —NR 13 C(═O)R 14 , —NR 13 C(═O)OR 14 , —NR 13 C(═O)NR 14 R 15 , —NR 13 S(═O) 2 R 14 , —NR 13 S(═O) 2 NR 14 R 15 , —OR 13 , —OC(═O)R 13 , —OC(═O)OR 13 , —OC(═O)NR 13 R 14 , —OC(═O)SR 13 , —SR 13 , —S(═O)R 13 , —S(═O) 2 R 13 , —S(═O) 2 NR 13 R 14 , —C(═O)R 13 , —C(═O)OR 13 , —C(═O)NR 13 R 14 , and R 13 ;  
 each R 13 , R 14 , and R 15  is independently selected from H, straight chain or branched (C 1 -C 8 )alkyl, straight chain or branched (C 2 -C 8 )alkenyl, straight chain or branched (C 2 -C 8  alkynyl), (C 3 -C 8 )cycloalkyl, (C 4 -C 8 )cycloalkenyl, (3-8 membered) heterocycloalkyl, (C 5 -C 11 )bicycloalkyl, (C 7 -C 11 )bicycloalkenyl, (5-11 membered) heterobicycloalkyl, (C 6 -C 14 )aryl, and (5-14 membered) heteroaryl, wherein R 13 , R 14 , and R 15  are each independently optionally substituted with from one to six substituents independently selected from F, Cl, Br, I, NO 2 , —CN, —CF 3 , —NR 16 R 17 , —NR 18 C(═O)R 17 , —NR 16 C(═O)OR 17 , —NR 16 C(═O)NR 17 R 18 , —NR 16 S(═O) 2 R 17 , —NR 16 S(═O) 2 R 17 R 18 , —OR 16 , —OC(═O)R 16 , —OC(═O)OR 16 , —OC(═O)NR 16 R 17 , —OC(═O)SR 16 , —SR 16 , —S(═O)R 16 , —S(═O) 2 R 16 , —S(═O) 2 NR 16 R 17 , —C(═O)R 16 , —C(═O)OR 16 , —C(═O)NR 16 R 17 , and R 16 ;  
 each R 16 , R 17 , and R 18  is independently selected from H, straight chain or branched (C 1 -C 8 )alkyl, straight chain or branched (C 2 -C 8 )alkenyl, straight chain or branched (C 2 -C 8  alkynyl), (C 3 -C 8 )cycloalkyl, (C 4 -C 8 )cycloalkenyl, (3-8 membered) heterocycloalkyl, (C 5 -C 11 )bicycloalkyl, (C 7 -C 11 )bicycloalkenyl, (5-11 membered) heterobicycloalkyl, (C 6 -C 14 )aryl, and (5-14 membered) heteroaryl;  
 n is 0, 1, 2,or 3;  
 wherein R 10  and R 11  in —C(═O)(CR 10 R 11 ) n — and —(CR 10 R 11 ) n — are for each iteration of n defined independently as recited above;  
 or a pharmaceutically acceptable salt thereof.