4-Aza-17.beta.-substituted-5.alpha.-androstan-3-ones and their A-homo analogs of the formula: ##STR1## where Formula (I) may also have the structure of partial Formulas (II) and/or (III); and pharmaceutically acceptable salts of the above compounds are active as testosterone 5.alpha.-reductase inhibitors, and thus useful topically for treatment of acne, seborrhea, female hirsutism, and systemically in treatment of benign prostatic hypertrophy.
Azasteroids as inhibitors of rat prostatic 5.alpha.-reductase
作者:Gary H. Rasmusson、Glenn F. Reynolds、Torleif Utne、Ronald B. Jobson、Raymond L. Primka、Charles Berman、Jerry R. Brooks
DOI:10.1021/jm00378a028
日期:1984.12
were prepared from 3-keto-delta 4-precursors by oxidative (O3 or NaIO4-KMnO4) A-ring cleavage followed, in turn, by ring closure with an amine and hydrogenation over platinum catalyst. Other A-ring azasteroids were made by Beckmann rearrangement of oximes of 2-oxo-A-nor, 3-oxo- and 4-oxo-5 alpha-androstanes. An A-nor-2-oxo-3-azasteroid was prepared by oxidative decarbonylation of a precursor 2,3-dioxo-4-azasteroid