A compound represented by general formula (I), which has an aromatase inhibitory activity and is useful for preventing and treating diseases caused by hyperestrogenosis, such as mastocarcinoma, metrocarcinoma and prostatomegaly. In formula (I) A represents C=O, CH₂, C=CH₂ or C=CH-lower alkyl; B represents O, NH or N-lower alkyl; X is nil, or represents C=O or CH₂; n is 2 or 3 when X is nil, or 1 or 2 when X represents C=O or CH₂; and the broken line between the 1-position and the 2-position in the steroidal skeleton means an optional presence of a double bond therebetween.
-New D-homo-17-oxa and D-homo-17-aza-androstane derivatives
申请人:TEIKOKU HORMONE MFG. CO., LTD.
公开号:EP0582713B1
公开(公告)日:1997-06-04
US5519051A
申请人:——
公开号:US5519051A
公开(公告)日:1996-05-21
Oxa- or azasteroid derivatives
申请人:Teikoku Hormone Mfg. Co., Ltd.
公开号:US05519051A1
公开(公告)日:1996-05-21
Compounds are described having the formula ##STR1## wherein A denotes C.dbd.O, CH.sub.2, C.dbd.CH.sub.2 or C.dbd.CH-lower alkyl; B denotes O, NH or N-lower alkyl; X does not exist, or denotes C.dbd.O or CH.sub.2 ; n denotes 2 or 3 when X does not exist, or denotes 1 or 2 when X denotes C.dbd.O or CH.sub.2 ; and the broken line between the 1- and 2-positions of the steroid skeleton means that a double bond may optionally exist there. These compounds have an aromatase inhibition action and are useful for prophylaxis or treatment of diseases caused by excess of estrogens, for example, breast cancer, uterine cancer, prostatic hypertrophy, etc.