Benzoic acid (3S,3aS,3bR,7S,7aR)-7-acetoxy-2,2,3b-trimethyl-2,3,3a,3b,4,5,7,7a-octahydro-1H-cyclopenta[a]pentalen-3-yl ester                                                                                                                                                              在
                                                                                                                                                                                 
溶剂黄146   、                                                                                                  CrO
3-3.5-dimethylpyrazole   、                                                                                                  
锌                                                                                                                                  作用下,
                                                                                                                                                                                        反应 9.0h,
                                                                                                                生成                                                 (3aS,3bR,4R,6aS)-(-)-6-(Benzoyloxy)-3,3a,3b,4,5,6,6a,7-octahydro-3a,5,5-trimethyl-2H-cyclopenta
pentalen-2-on