(3aS,4R,6S,7R,7aR)-7-Acetoxy-6-hydroxy-6-methyl-3-methylene-octahydro-benzofuran-4-carboxylic acid methyl ester 在
氯化亚砜 作用下,
以
吡啶 为溶剂,
以81%的产率得到(3aS,4S,7S,7aR)-7-Acetoxy-6-methyl-3-methylene-2,3,3a,4,7,7a-hexahydro-benzofuran-4-carboxylic acid methyl ester