(2S,4R)-4-(7-methoxy-2-phenylquinolin-4-yl)oxy-1-[(2S)-3-methyl-2-[(2-methylpropan-2-yl)oxycarbonylamino]butanoyl]pyrrolidine-2-carboxylic acid 、
1-氨基环丙烷甲酸甲酯盐酸盐 在
O-(1H-benzotriazol-1-yl)-N,N,N',N'-tetramethyluronium hexafluorophosphate 、
N,N-二异丙基乙胺 作用下,
以
N,N-二甲基甲酰胺 为溶剂,
反应 2.0h,
以84%的产率得到1-{[(2S,4R)-1-((S)-2-tert-Butoxycarbonylamino-3-methyl-butyryl)-4-(7-methoxy-2-phenyl-quinolin-4-yloxy)-pyrrolidine-2-carbonyl]-amino}-cyclopropanecarboxylic acid methyl ester