4-[(2S,3R)-3-hydroxy-4-(N-isobutylnitrophenylsulfonamido)-1-phenylbutan-2-ylcarbamoyloxy]butanoic 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,
反应 4.0h,
生成
(R)-1-(3-[(11S,12R)-11-benzyl-12-hydroxy-16-methyl-14-(4-nitrophenylsulfonyl)-4,9-dioxo-8-oxa-3,10,14-triazaheptadecyloxy]phenyl)-3-(3,4-dimethoxyphenyl)propyl (S)-1-(3,3-dimethyl-2-oxopentanoyl)piperidine-2-carboxylate