甲基锂 、 (3aR,4aS,8aS,9aS)-6-[1-Hydroxy-meth-(E)-ylidene]-2,2,4a,9,9-pentamethyl-octahydro-naphtho[2,3-d][1,3]dioxol-5-one 在
三乙胺 作用下,
以
乙醚 为溶剂,
以59%的产率得到(3aS,4aR,8aR,9aR)-2,2,4a,5,9,9-Hexamethyl-6-[1-trimethylsilanyloxy-meth-(E)-ylidene]-decahydro-naphtho[2,3-d][1,3]dioxol-5-ol