(3E,3aS,6S,7S,7aR) methyl 3a-<(t-butyldimethylsilyl)oxy>-3-iodomethylidene-6,7-isopropylidenedioxy-6-methyl octahydrobenzofuran-4-carboxylate 在
2,6-二甲基吡啶 、 montmorillonite K-10 作用下,
以
四氢呋喃 、
甲醇 为溶剂,
反应 8.0h,
生成
(3E,3aS,4R,6S,7S,7aR) methyl 3a,7-bis<(t-butyldimethylsilyl)oxy>-6-hydroxy-3-iodomethylidene-6-methyl-octahydrobenzofuran-4-carboxylate