4α-Methyl-cholesteryl-methansulfonat 在
吡啶 、
chromium(VI) oxide 、
potassium acetate 作用下,
生成 (1R,1aR,3aR,3bS,5aR,6R,8aS,8bS,10aR)-6-((R)-1,5-Dimethyl-hexyl)-1,3a,5a-trimethyl-tetradecahydro-cyclopenta[a]cyclopropa[2,3]cyclopenta[1,2-f]naphthalen-10-one