| abstract |
Compound of formula (I) active against the Hepatitis C virus: wherein B is an acyl derivative; a is 0 or 1; R6, when present, is carboxy(lower)alkyl; b is 0 or 1; R5, when present, is C1-6 alkyl, or carboxy (lower)alkyl; Y is H or C1-6 alkyl; R4 is C1-10 alkyl; R3 is C1-10 alkyl; W is -NH-CH(R2)-C(O)-, wherein R2 is C1-6 alkyl; C6 or C10 aryl; C7-16 aralkyl; or carboxy (lower)alkyl; or W is a proline derivative; Q is a group of the formula -Z(R1)-C(O)-R13, wherein Z is CH or N; R1 is C1-6 alkyl or C1-6 alkenyl both optionally substituted with thio or halo,; and R13 is an activated carbonyl substituent, or Q is a phosphonate group of the formula -CH(R1)-P(O)R15R16 wherein R15 and R16 are independently C6-20 aryloxy; and R1 is as defined above. |