Tg. Back et al., PREPARATION OF 6-AZAANDROST-4-ENE-3,7,17-TRIONE AND SOME RELATED 3-OXYGENATED 6-AZAANDROSTANES, Heterocycles, 38(5), 1994, pp. 1053-1060
The synthesis of 6-azaandrost-4-ene-3,7,17-trione and of several relat
ed 3-oxygenated 6-azaandrostanes was achieved from 3beta-hydroxyandros
t-5-en-17-one.