| 摘要 |
Disclosed is a compound represented by the general formula (I) below, a pharmacologically acceptable salt thereof, or a prodrug thereof. [Chemical formula 1] (I) (In the formula, R1 represents a hydrogen atom, an optionally substituted C1-C6 alkyl group, an optionally substituted C3-C6 cycloalkyl group or the like; R2 represents a hydrogen atom, a halogen atom, a carboxy group, a C2-C7 alkoxycarbonyl group, a carbamoyl group, a cyano group, a C1-C6 alkyl group, a halogeno C1-C6 alkyl group, a C1-C6 alkyl group substituted with a heteroaryl group or the like; R3 represents a substituted C1-C6 alkyl group, a heterocyclyl group, or a mono- to penta-substituted heterocyclyl group; X1, X2, X3, X4 and X5 independently represent a hydrogen atom, a halogen atom, an amino group, a carboxy group, a carbamoyl group, a cyano group, a nitro group, a C1-C6 alkyl group or the like; and n represents an integer of 0-2.)
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