3-((2S,4S)-1-((4-nitrobenzyloxy)carbonyl)-4-(tritylthio)pyrrolidine-2-carboxamido)benzoic acid 、 (1R)-3-(3,4-dimethoxyphenyl)-1-[3-[2-ethanamine]phenoxy]-propanyl (2S)-1-(3,3-dimethyl-1,2-dioxopentyl)-2-piperidinecarboxylate hydrochloride 在
N-甲基吗啉 、 Methanaminium,N-[(dimethylamino)(3H-1,2,3-triazolo[4,5-b]pyridin-3-yloxy)methylene]-N-methyl-, hexafluorophosphate(1-) 作用下,
以
N,N-二甲基甲酰胺 为溶剂,
生成
(S)-((R)-3-(3,4-dimethoxyphenyl)-1-(3-(2-(3-((2S,4S)-1-((4-nitrobenzyloxy)carbonyl)-4-(tritylthio)pyrrolidine-2-carboxamido)benzamido)ethoxy)phenyl)propyl) 1-(3,3-dimethyl-2-oxopentanoyl)piperidine-2-carboxylate