ethyl 4-[(8'R,9'S,13'S,14'S,15'S)-13'-methyl-3'-phenylmethoxyspiro[1,3-dioxolane-2,17'-7,8,9,11,12,14,15,16-octahydro-6H-cyclopenta[a]phenanthrene]-15'-yl]butanoate 在
palladium on activated charcoal
氢气 作用下,
以
四氢呋喃 为溶剂,
20.0 ℃
、100.0 kPa
条件下,
反应 72.0h,
以84%的产率得到ethyl 4-[(8'R,9'S,13'S,14'S,15'S)-3'-hydroxy-13'-methylspiro[1,3-dioxolane-2,17'-7,8,9,11,12,14,15,16-octahydro-6H-cyclopenta[a]phenanthrene]-15'-yl]butanoate