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US 6,770,666 B2Granted
Fused-ring compounds and use thereof as drugs
AssigneeJapan Tobacco Inc.
InventorsHiromasa Hashimoto, Kenji Mizutani, Atsuhito Yoshida
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Abstract
The present invention provides a fused ring compound of the following formula [I] wherein each symbol is as defined in the specification, a pharmaceutically acceptable salt thereof, and a therapeutic agent for hepatitis C, which contains this compound. The compound of the present invention shows an anti-hepatitis C virus (HCV) action based on the HCV polymerase inhibitory activity, and is useful as a therapeutic agent or prophylactic agent for hepatitis C.
Claims3
A benzimidazole compound of following formula [III]
- wherein Ra36 is hydrogen atom or carboxyl-protecting group, Ra37 is cyclopentyl or cyclohexyl, and Ra38 is hydrogen atom or fluorine atom, or a salt thereof.
Dependencies are inferred from the claim text.