| 摘要 |
Disclosed is a compound represented by the formula (1) below or a pharmaceutically acceptable salt thereof. [chemical formula 1] (1) (In the formula, the configuration of a carbon atom marked with an asterisk (*) is R; R1 represents a hydrogen atom, a halogen atom, an amino group, a hydroxy group, a hydroxyamino group, a nitro group, a cyano group, a sulfamoyl group, a C1-C6 alkyl group or a C1-C6 alkoxy group; R2 represents a C3-C6 cycloalkylsulfanyl group, a C3-C6 cycloalkylsulfinyl group or a C3-C6 cycloalkylsulfonyl group; and A represents an optionally substituted heteroaryl group).
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