(Z)-2'-<(acetyloxy)methylene>-5',17α-dihydro-5'α-methyl-2'H-18-nor-17α-androst-4-eno<13,17-c>furan-3-one 在
高氯酸 作用下,
以
四氢呋喃 为溶剂,
反应 0.08h,
以80%的产率得到Acetic acid 2-[(8R,9S,10R,13R,14S,17S)-17-((R)-1-hydroxy-ethyl)-10-methyl-3-oxo-1,2,3,6,7,8,9,10,11,12,14,15,16,17-tetradecahydro-cyclopenta[a]phenanthren-13-yl]-2-oxo-ethyl ester