Benzoic acid (1R,2R)-1-((3aR,9aS,9bS)-7-acetoxy-9a,9b-dimethyl-1-oxo-1,3,3a,4,5,7,8,9,9a,9b-decahydro-naphtho[1,2-c]furan-6-ylmethyl)-2-hydroxy-3-methyl-but-3-enyl ester 在
高氯酸 、 lithium perchlorate 作用下,
以
乙醚 为溶剂,
以32%的产率得到Benzoic acid (1R,2R)-1-((3aR,9aS,9bS)-9a,9b-dimethyl-1-oxo-1,3,3a,4,8,9,9a,9b-octahydro-naphtho[1,2-c]furan-6-ylmethyl)-2-hydroxy-3-methyl-but-3-enyl ester