| 摘要 |
Compounds represented by the general formula (I), salts thereof, and hydrates of both: (I) wherein R1 is methoxy, ethyl, methylthio, or the like; R2, R3 and R4 are each hydrogen, halogeno, or the like; R5 and R6 are each a group represented by the general formula: - X5-X6-X7 (wherein X5 is a single bond or CO-; X6 is a single bond, -NR3a-, or the like; X7 and R3a are each hydrogen, C1-10 alkyl, or the like); and Ar is phenyl, pyridyl, or the like.
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