Au. Siddiqui et al., SYNTHESIS OF STEROIDAL TRIAZINE, TRIAZOLE AND OXADIAZOLE DERIVATIVES FROM A STEROIDAL ALPHA-HYDROXYIMINO KETONE, Journal of chemical research. Synopses, (2), 1995, pp. 43-43
Steroidal triazines (3-5), triazoles (6, 7) and an oxadiazole (8) are
prepared from 16-hydroxyimino-17-oxoandrost-5-en-3beta-yl acetate (2),
obtained by reaction of 17-oxoandrost-5-en-3beta-yl acetate (1) with
isopentyl nitrite in the presence of potassium tert-butoxide.