1-甲基环丙烷-1-羧酸   、                                                                                      
5-methyl-2-piperidin-4-yl-1,2,4,10-tetrahydro-3-oxa-10-azaphenanthren-9-one hydrochloride                                                                                                                                                              在
                                                                                                                                                                                 O-(1H-benzotriazol-1-yl)-N,N,N',N'-tetramethyluronium hexafluorophosphate   、                                                                                                  
N,N-二异丙基乙胺                                                                                                                                  作用下,
                                                                                                                以
                                                                                         
N-甲基吡咯烷酮                                                                                  为溶剂,
                                                                                                                                                    反应 18.0h,
                                                                                                                以26 mg的产率得到rac-5-methyl-2-[1-(1-methylcyclopropanecarbonyl)piperidin-4-yl]-1,2,4,10-tetrahydro-3-oxa-10-azaphenanthren-9-one