| 摘要 |
PROBLEM TO BE SOLVED: To provide an antiviral agent effective for influenza or the like. SOLUTION: The antiviral agent contains a pyrrole derivative represented by formula (I) (wherein, R<SP>A</SP>, R<SP>B</SP>, R<SP>C</SP>and R<SP>D</SP>are the same or different and each a hydrogen atom, an alkyl group, an aryl group or the like; X is a hydrogen atom, a substituted alkyl group or the like; or each of X and R<SP>A</SP>, R<SP>A</SP>and R<SP>B</SP>, and R<SP>C</SP>and R<SP>D</SP>may form a ring by bonding to each other). COPYRIGHT: (C)2009,JPO&INPIT
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