摘要 |
A compound of formula (I): <IMAGE> (I) wherein R is a hydrogen atom or a C1-C4 alkyl group; A is a single bond or a straight or branched C1-C6 alkylene chain; R1 is a hydrogen atom or a C1-C6 alkyl group; R2 is a C1-C6 alkyl group, a C5-C7 cycloalkyl or a C6-C10 cycloalkylalkyl group, aryl or a C7-C10 arylalkyl group, or a C6-C10 heterocyclylalkyl group; R3 is hydrogen, a C1-C4 alkyl group or an aryl or a C7-C10 arylalkyl group; Z is a C1-C6 alkyl group, an -OR5 group wherein R5 is a C1-C6 alkyl group, <IMAGE> group wherein each of R6 and R7 is hydrogen, C1-C6 alkyl, C5-C7 cycloalkyl, phenyl or R6 and R7 taken together with the nitrogen to which they are linked form a pentatomic or hexatomic saturated heteromonocyclic ring; and the symbol represents a single or a double bond, is a testosterone 68 5 alpha -reductase inhibitor and is therapeutically useful in benign prostatic hyperplasia, prostatic and breast cancers, seborrhoea, female hirsutism and male pattern baldness.
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