Disclosed herein are compounds of formula (1):
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 (C4-6)cycloalkyl; R3 is t-butyl or (C5-6) cycloalkyl and R4 is (C4-6)cycloalkyl; or a pharmaceutically acceptable salt thereof. The compounds are useful as inhibitors of HCV NS3 protease.
本公开的化合物具有以下结构(1):其中R1是羟基或NHSO2R1A,其中R1A是(C1-8)烷基,(C3-7)环烷基或{(C1-6)烷基-(C3-7)环烷基},这些都可以选择地被卤素、
氰基、硝基、O-(C1-6)烷基、酰胺、
氨基或苯基取代1到3次,或者R1A是可选择地被卤素、
氰基、硝基、(C1-6)烷基、O-(C1-6)烷基、酰胺、
氨基或苯基取代1到3次的C6或C10芳基;R2是(C4-6)环烷基;R3是叔丁基或(C5-6)环烷基,R4是(C4-6)环烷基;或其药学上可接受的盐。这些化合物可用作HCV
NS3蛋白酶的
抑制剂。