Acetic acid (1R,3aS,3bS,5R,5aS,7S,10aR,10bS,12aR)-7-bromo-1-((R)-1,5-dimethyl-hexyl)-10a,12a-dimethyl-6-oxo-octadecahydro-cyclohepta[a]cyclopenta[f]naphthalen-5-yl ester 在
甲醇 、
氢氧化钾 、 lithium tri-t-butoxyaluminum hydride 作用下,
生成 (1R,3aS,3bS,10aR,10bS,12aR)-1-((R)-1,5-Dimethyl-hexyl)-10a,12a-dimethyl-2,3,3a,3b,4,7,8,9,10,10a,10b,11,12,12a-tetradecahydro-1H-cyclohepta[a]cyclopenta[f]naphthalen-6-one