、                                                                                      
(1R,2S,5S)-N-[1,2-dioxo-1-(prop-2-enylamino)heptan-3-yl]-3-[(2S)-2-isocyanato-3,3-dimethylbutanoyl]-6,6-dimethyl-3-azabicyclo[3.1.0]hexane-2-carboxamide                                                                                                                                                              在
                                                                                                                                                                                 
N,N-二异丙基乙胺                                                                                                                                  作用下,
                                                                                                                以
                                                                                         
二氯甲烷                                                                                  为溶剂,
                                                                                                                                                    反应 2.0h,
                                                                                                                以55%的产率得到(1R,2S,5S)-3-[(2S)-2-[[(2S)-1-[dimethylsulfamoyl(methyl)amino]-3,3-dimethylbutan-2-yl]carbamoylamino]-3,3-dimethylbutanoyl]-N-[1,2-dioxo-1-(prop-2-enylamino)heptan-3-yl]-6,6-dimethyl-3-azabicyclo[3.1.0]hexane-2-carboxamide