| 摘要 |
The object compound of formula (I), wherein R<1> is hydrogen, halogen or lower alkylamino which has suitable substituent(s), R<2> is hydrogen or halogen, R<3> is hydrogen or lower alkyl which may have suitable substituent(s), R<4> is lower alkyl which has suitable substituent(s); or (2) is 4-(lower alkyl)piperazinyl, R<5> is hydrogen or lower alkyl, and A is lower alkylene, and pharmaceutically acceptable salts thereof which are useful as a medicament. |
