[(8'R,9'S,13'S,14'R,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]methanol 在
咪唑 、
碘 、
三苯基膦 作用下,
以
二氯甲烷 为溶剂,
反应 2.17h,
以69%的产率得到(8'R,9'S,13'S,14'R,15'S)-15'-(iodomethyl)-13'-methyl-3'-phenylmethoxyspiro[1,3-dioxolane-2,17'-7,8,9,11,12,14,15,16-octahydro-6H-cyclopenta[a]phenanthrene]