(4aS,4bS,8S,8aS)-8-tert-Butoxy-8a-methyl-1-[2-(2-methyl-[1,3]dioxolan-2-yl)-ethyl]-3,4,4a,4b,5,6,7,8,8a,9-decahydro-phenanthrene-2,10-dione 在
sodium hydroxide 、
lithium 、
溶剂黄146 作用下,
以
甲醇 为溶剂,
生成 (3aR,6aR,7R,10aR,10bR,10cR)-5-Acetyl-7-tert-butoxy-3a,6a-dimethyl-1,3a,4,6,6a,7,8,9,10,10a,10b,10c-dodecahydro-2H-acephenanthrylen-3-one