TETRACYCLIC FUSED HETEROCYCLIC COMPOUND AND USE THEREOF AS HCV POLYMERASE INHIBITOR

摘要

PROBLEM TO BE SOLVED: To provide a compound having anti-hepatitis C virus (HCV) action, especially a compound having RNA-depending RNA polymerase inhibiting action. SOLUTION: A tetracyclic fused heterocyclic compound represented by general formula [I] (wherein each symbol is as defined in the specification) or a pharmaceutically acceptable salt thereof is provided, and a hepatitis C virus polymerase inhibitor and a therapeutic agent for hepatitis C, containing the compound are provided. COPYRIGHT: (C)2008,JPO&INPIT