4-[(S)-4-tert-butoxycarbonyl-2-({5-[(1-carboxycyclobutyl)carbamoylmethoxy]-1-phenyl-1H-pyrazole-3-carbonyl}amino)butyryl]piperazine-1-carboxylic acid ethyl ester 、
环丙胺 、
三氟乙酸 在
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
N,N-二甲基甲酰胺 、
二氯甲烷 为溶剂,
反应 24.33h,
生成 4-[(S)-4-carboxy-2-({5-[(1-cyclopropylcarbamoylcyclobutyl)carbamoylmethoxy]-1-phenyl-1H-pyrazole-3-carbonyl}amino)butyryl]piperazine-1-carboxylic acid ethyl ester trifluoroacetate