| 摘要 |
<p>Formula (I) wherein a is 0 or 1; b is 0 or 1; Y is H or C1-6 alkyl; B is H, an acyl derivative or a sulfonyl derivative; W is hydroxy or a N-substituted amino; or a pharmaceutically acceptable salt or ester thereof, for use in the treatment of hepatitis C virus (HCV) infection.</p> |
