| 摘要 |
Indole derivatives of formula (I), wherein R<1> is carboxy(lower)alkyl or protected carboxy(lower)alkyl, R<2> is hydrogen, lower alkyl or halogen, R<3> and R<4> are each hydrogen or lower alkyl, R<5> is ar(lower)alkyl which may have suitable substituent(s), and A is carbonyl, sulfonyl or lower alkylene, or a pharmaceutically acceptable salt thereof, which are useful as a testosterone 5 alpha -reductase inhibitor. |
