| abstract |
Compounds of formula (I), wherein R 1 is a hydroxy or NHSO 2 R 1A group, wherein R 1A is (C 1-8) -alkyl, (C 3-7) -cycloalkyl or {(C 1-6) -alkyl- (C 3-7) - cycloalkyl} groups, all of which are optionally substituted with 1 to 3 halogen, cyano, nitro, O- (C1-6) -alkyl, amido, amino or phenyl groups, or R1A is a C6- or C10-aryl group , which is optionally substituted with 1 to 3 halogen, cyano, nitro, (C1-6) -alkyl, O- (C1-6) -alkyl, amido, amino or phenyl groups; R2 is (C5-6) -cycloalkyl and R3 is a cyclopentyl group; or a pharmaceutically acceptable salt thereof, useful as HCV NS3 protease inhibitors. |