Compounds of the following general formula are testosterone 5.alpha.-reductase inhibitors rendering said compounds useful in the treatment of acne and oily skin: ##STR1## wherein n is an integer of from 0 to 4; R.sub.1 is --COOR.sub.2, --CONR.sub.3 R.sub.4, --CHO or --CH.sub.2 OR.sub.5 ; R.sub.2 is hydrogen, a straight or branched lower alkyl group of from 1 to 4 carbon atoms, or benzyl; each of R.sub.3 and R.sub.4 is hydrogen or a straight or branched lower alkyl group of from 1 to 4 carbon atoms; and R.sub.5 is hydrogen, alkylcarbonyl wherein the alkyl moiety has from 1 to 20 carbon atoms and is straight or branched, benzoyl, phenylalkylcarbonyl wherein the alkyl moiety has from 1 to 6 carbon atoms and is straight or branched, or cycloalkylcarbonyl wherein the cycloalkyl moiety has from 5 to 10 carbon atoms.
下列通式化合物是
睾酮5α-还原酶
抑制剂,可用于治疗痤疮和油性皮肤:##STR1## 其中n为0至4的整数;R.sub.1为--COOR.sub.2,--CONR.sub.3 R.sub.4,--CHO或--CH.sub.2 OR.sub.5;R.sub.2为氢、1至4个碳原子的直链或支链低烷基,或苄基;R.sub.3和R.sub.4中的每一个为氢或1至4个碳原子的直链或支链低烷基;R.sub.5为氢、烷基羰基,其中烷基部分具有1至20个碳原子且为直链或支链,苯甲酰基,苯基烷基羰基,其中烷基部分具有1至6个碳原子且为直链或支链,或环烷基羰基,其中环烷基部分具有5至10个碳原子。