(R)-2'-(((tert-butoxycarbonyl)amino)methyl)-4-methyl-4,5-dihydro-[2,4'-bithiazole]-4-carboxylic acid   、                                                                                                                                                                                                                                                    在
                                                                                                                                                                                 
N-羟基-7-氮杂苯并三氮唑   、                                                                                                  
N,N-二异丙基乙胺   、                                                                                                  
Methanaminium,N-[(dimethylamino)(3H-1,2,3-triazolo[4,5-b]pyridin-3-yloxy)methylene]-N-methyl-, hexafluorophosphate(1-)                                                                                                                                  作用下,
                                                                                                                以
                                                                                         
二氯甲烷                                                                                  为溶剂,
                                                                                                                                                    反应 12.0h,
                                                                                                                生成                                                 (S)-2-(trimethylsilyl)ethyl 3-((S)-2-((R)-2-(2-((tert-butoxycarbonyl)methyl)thiazol-4-yl)-4-methyl-4,5-dihydrothiazole-4-carboxamido)-3-(4-hydroxyphenyl)propanoyloxy)-7-(octanoylthio)hept-4-enoate   、                                                                                             
(S)-2-(trimethylsilyl)ethyl 3-((S)-2-((R)-2-(2-((tert-butoxycarbonyl)methyl)thiazol-4-yl)-4-methyl-4,5-dihydrothiazole-4-carboxamido)-3-(4-hydroxyphenyl)propanoyloxy)-7-(octanoylthio)hept-4-enoate