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