(1R,3aS,3bR,5aS,10aS,10bS,12aR)-1-((R)-1,5-Dimethyl-hexyl)-10a,12a-dimethyl-2,3,3a,3b,4,5,5a,6,10,10a,10b,11,12,12a-tetradecahydro-1H-8-oxa-7,9-diaza-dicyclopenta[a,h]phenanthrene 9-oxide 在
硝酸乙酯 、
potassium tert-butylate 作用下,
生成
6α-nitro-5α-cholestan-7-one