Viral polymerase inhibitors

摘要

An isomer, enantiomer, diastereoisomer or tautomer of a compound, represented by formula I: wherein wherein A, B, R<2>, R<3>, L, M<1>, M<2>, M<3>, M<4>, Y<1>, Y<0>, Z and Sp are as defined in claim 1, or a salt thereof, as an inhibitor of HCV NS5B polymerase.