Compounds of the formula ##STR1## wherein carbon atoms 1 and 2 are linked by a single bond or a double bond, R.sub.1 is hydrogen, methyl or ethyl, and A is a group of the formula --N(--R.sub.2)--X-- wherein R.sub.2 is hydrogen or C.sub.1 -C.sub.4 alkyl and X is C.sub.1 -C.sub.12 alkylene or C.sub.3 -C.sub.6 cycloalkylidene; a group of the formula --N(--R.sub.2)--Y--Phe-- wherein R.sub.2 is as defined above, Y is a direct bond or C.sub.1 -C.sub.6 -alkylene and Phe is an unsubstituted or substituted phenylene radical; a group of the formula --O--X-- wherein X is as defined above, or a group --O--Y--Phe-- wherein Y and Phe are as defined above, are inhibitors of 5.alpha.-reductase and can be used for the therapeutic treatment of the human and animal body.
式##STR1##中的化合物,其中碳原子1和2通过单键或双键连接,R.sub.1是氢、甲基或乙基,A是式--N(--R.sub.2)--X--的基团,其中R.sub.2是氢或C.sub.1 -C.sub.4烷基,X是C.sub.1 -C.sub.12烷基或C.sub.3 -C.sub.6环烷基亚甲基;式--N(--R.sub.2)--Y--Phe--的基团,其中R.sub.2如上定义,Y是直接键或C.sub.1 -C.sub.6-烷基亚甲基,Phe是未取代或取代的苯基基团;式--O--X--的基团,其中X如上定义,或基团--O--Y--Phe--,其中Y和Phe如上定义,是5α-还原酶的
抑制剂,可用于治疗人体和动物体。