abstract |
The invention relates to compounds of formula (I) wherein R1, R2, R3, R4, R5, Y, n and m are as defined herein. The compounds are useful for the treatment and prevention of hepatitis C viral infection 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). |