(3E,3aS,4R,6S,7S,7aR) methyl 7-acetoxy-3a-<(t-butyldimethylsilyl)oxy>-6-hydroxy-3-iodomethylidene-6-methyl-octahydrobenzofuran-4-carboxylate 在
氯化亚砜 作用下,
以
吡啶 为溶剂,
反应 2.0h,
生成 (3E,3aS,4R,7R,7aR) methyl 7-acetoxy-3a-<(t-butyldimethylsilyl)oxy>-3-iodomethylidene-6-methyl-2,3,3a,4,7,7a-hexahydrobenzofuran-4-carboxylate 、 (3E,3aS,4R,7R,7aR) methyl 7-acetoxy-3a-<(t-butyldimethylsilyl)oxy>-3-iodomethylidene-6-methylidene-octahydrobenzofuran-4-carboxylate