17&bgr;-N-monosubstituted-carbamoyl-4-aza-5&agr;-androst-1-en-3-ones of the formula
1
wherein R
1
is selected from hydrogen, methyl and ethyl and R
2
is a straight or branched chain alkyl, cycloalkyl, aralkyl of from 1-12 carbons, or monocyclic aryl optionally containing 1 or more lower alkyl substituents of 1-2 carbon atoms and/or 1 or more halogens, and R′, R″, R′″ are hydrogen or methyl are useful for the prevention of prostatic carcinoma.
17&bgr;-N-单取代-
氨基甲酰基-4-氮杂-5&agr;-
雄甾烷-1-烯-3-酮,其式为
1
其中 R
1
选自氢、甲基和乙基,R
2
是直链或支链烷基、环烷基、1-12 个碳原子的芳基,或可选含有 1 个或多个 1-2 个碳原子的低级烷基取代基和/或 1 个或多个卤素的单环芳基,且 R′、R″、R′″是氢或甲基。