methyl (1S,3S,5R,7R,8S,11S,12R)-5-methoxy-8,11-dimethyl-9-oxotetracyclo[6.6.0.01,11.03,7]tetradecane-12-carboxylate   、                                                                                      
甲基氯化镁                                                                                                                                                                                              以
                                                                                         
乙醚                                                                                  为溶剂,
                                                                                                                                                    反应 3.0h,
                                                                                                                以84%的产率得到2-[(1S,3S,5R,7R,8S,11S,12R)-5-methoxy-8,11-dimethyl-9-oxotetracyclo[6.6.0.0(1,11).0(3,7)]tetradecan-12-yl]propan-2-ol