在
                                                                                                                                                                                 
碳酸氢钠                                                                                                                                  作用下,
                                                                                                                以
                                                                                         
二氯甲烷                                                                                  为溶剂,
                                                                                                                                                                                        生成                                                 
methyl (3'R,5'S)-hexahydro-5'-<(indol-3''-yl)methyl>-1'-methyl-6'-oxospiro(cyclopropane-1,2'-pyrazine)-3'-carboxylate   、                                                                                             methyl (3'S,5'S)-hexahydro-5'-<(indol-3''-yl)methyl>-1'-methyl-6'-oxospiro(cyclopropane-1,2'-pyrazine)-3'-carboxylate   、                                                                                             (2'S,6'R)-6'-chlorohexahydro-2'-<(indol-3''-yl)methyl>-4'-methylspiro(cyclopropane-1,5'-<1H><1,4>diazepine)-3',7'-dione