Abstract: Compounds of formula I: wherein R1, R2, R2a, R3, R4 and R5 are defined herein, are useful as inhibitors of the HCV NS3 protease.

Abstract: Compounds of formula I: wherein D, R4, R3, L0, L1, L2, R2 and RC are defined herein; or a pharmaceutically acceptable salt thereof, useful as inhibitors of the HCV NS3 protease.

Abstract: Compounds of formula I: wherein D, R4, R3, L0, L1, L2, R2 and RC are defined herein; or a pharmaceutically acceptable salt thereof, useful as inhibitors of the HCV NS3 protease.

Abstract: Compounds of formula (I): wherein R1, R2, X, R3, D, and the dotted line b are as defined herein; or a pharmaceutically acceptable salt or ester thereof, are useful as inhibitors of the HCV NS3 protease.

Abstract: Compounds of formula (I): wherein B, X, R3, L0, L1, L2, R2, R1 and RC are defined herein. The compounds are useful as inhibitors of HCV NS3 protease for the treatment of hepatitis C viral infection.

Abstract: Compounds of formula (I): wherein R1, R2, R3, R4, n and m are as defined herein. The compounds are useful as inhibitors of HCV NS3 protease.

Abstract: Compounds of formula (I): wherein R1, R2, R3, R4, n and m are as defined herein. The compounds are useful as inhibitors of HCV NS3 protease.

Abstract: Compounds of formula (I): wherein R1 is (C1-8)alkyl, (C3-7)cycloalkyl, {(C1-6)alkyl-(C3-7)cycloalkyl} or Het, which are all optionally substituted from 1 to 3 times with halo, cyano, nitro, O—(C1-6)alkyl, amido, amino or phenyl, or R1 is C6 or C10 aryl which is optionally substituted from 1 to 3 times with halo, cyano, nitro, (C1-6)alkyl, O—(C1-6)alkyl, amido, amino or phenyl; or a pharmaceutically acceptable salt thereof, useful as an inhibitor of the HCV NS3 protease.

Abstract: The compounds of formula I wherein R1, R2, R3, R4 and R5 are defined herein, are useful as inhibitors of the hepatitis C virus NS3 protease The invention further relates to azalactone compounds of the formula (II) which can be reacted with an amide anion to produce the HCV NS3 protease inhibitors of formula (I)

Abstract: Compounds of formula (I): wherein B, X, R3, L0, L1, L2, R2, R1 and RC are defined herein. The compounds are useful as inhibitors of HCV NS3 protease for the treatment of hepatitis C viral infection.

Abstract: The invention relates to compounds of formula (I) wherein R?, R2, R3, R4, R5, R6, Y, n and m are as defined (herein. The compounds are useful for the treatment and prevention of hepatitis C viral infections in mammals by inhibiting HCV NS3 protease. The invention further relates to azalactone compounds of the formula (III) which can be reacted with an amide anion to produce the compounds of formula (I).

Abstract: Compounds of formula I: wherein R1 is hydroxy or NHSO2R1A wherein R1A is (C1-8)alkyl, (C3-7)cycloalkyl or {(C1-6)alkyl-(C3-7)cycloalkyl}, which are all optionally substituted from 1 to 3 times with halo, cyano, nitro, O(C1-6)alkyl, amido, amino or phenyl, or R1A is C6 or C10 aryl which is optionally substituted from 1 to 3 times with halo, cyano, nitro, (C1-6)alkyl, O(C1-6)alkyl, amido, amino or phenyl; R2 is (C5-6)cycloalkyl and R3 is cyclopentyl; or a pharmaceutically acceptable salt thereof, useful as inhibitors of the HCV NS3 protease.

Abstract: Compounds of formula (I): wherein R1 is hydroxyl or sulfonamide derivative; R2 is t-butyl or —CH2—C(CH3)3 or —CH2-cyclopentyl; R3 is t-butyl or cyclohexyl and R4 is cyclobutyl, cyclopentyl or cyclohexyl; or a pharmaceutically acceptable salt thereof, are described as useful as inhibitor of the HCV NS3 protease.

Abstract: Compounds of formula (I): wherein R1 is (C1-8)alkyl, (C3-7)cycloalkyl, {(C1-6)alkyl-(C3-7)cycloalkyl} or Het, which are all optionally substituted from 1 to 3 times with halo, cyano, nitro, O—(C1-6)alkyl, amido, amino or phenyl, or R1 is C6 or C10 aryl which is optionally substituted from 1 to 3 times with halo, cyano, nitro, (C1-6)alkyl, O—(C1-6)alkyl, amido, amino or phenyl; or a pharmaceutically acceptable salt thereof, useful as an inhibitor of the HCV NS3 protease.

Abstract: Compounds of formula (I): wherein R1, R2, R3, R4, n and m are as defined herein. The compounds are useful as inhibitors of HCV NS3 protease.

Abstract: Compounds of formula (I): wherein R1, R2, R3, R4, R5, Y, n and m are as defined herein. The compounds are useful as inhibitors of HCV NS3 protease.

Abstract: Compounds of formula (I): wherein R1, R2, X, R3, D, and the dotted line b are as defined herein; or a pharmaceutically acceptable salt or ester thereof, are useful as inhibitors of the HCV NS3 protease.

Abstract: Compounds of formula (I): wherein B, X, R3, R21, R22, R1 and Rc are defined herein. The compounds are useful as inhibitors of HCV NS3 protease.

Abstract: Compounds of formula (I): wherein B, Y, R3, R24, R2, R1 and RC are defined herein. The compounds are useful as inhibitors of HCV NS3 protease.

Abstract: A racemate diastereoisomer and optical isomer of a compound of formula (I): wherein B is H, a C6 or C10 aryl, C7-16 aralkyl; Het or (lower alkyl)-Het, all of which may be optionally substituted with C1-6 alkyl; C1-6 alkoxy; C1-6 alkanoyl; hydroxy; hydroxyalkyl; halo; haloalkyl; nitro; cyano; cyanoalkyl; amino optionally substituted with C1-6 alkyl; amido; or (lower alkyl)amide; or B is an acyl derivative of formula R4—C(O)—; a carboxyl derivative of formula R4—O—C(O)—; an amide derivative of formula R4—N(R5)—C(O)—; a thioamide derivative of formula R4—N(R5)—C(S)—; or a sulfonyl of formula R4—SO2; R5 is H or C1-6 alkyl; and Y is H or C1-6 alkyl; R3 is C1-8 alkyl, C3-7 cycloalkyl, or C4-10 alkylcycloalkyl, all optionally substituted with hydroxy, C1-6 alkoxy, C1-6 thioalkyl, amido, (lower alkyl)amido, C6 or C10 aryl, or C7-16 aralkyl; R2 is C2—R20, NH—R20, O—R20 or S—R20, wherein R20 is a saturated or unsaturated C3-7 cycloalkyl or C4-10 (alkylcycloalkyl), all of which being optionally mono-, di- or tri-