(2S,4R)-1-Acetyl-4-(7-methoxy-2-phenyl-quinolin-4-yloxy)-pyrrolidine-2-carboxylic acid 、 (E)-(5R,7S)-5-Amino-2,2-dioxo-16-oxa-2Λ6-thia-3-aza-tricyclo[15.3.1.05,7]henicosa-1(20),8,17(21),18-tetraen-4-one hydrochloride 在
O-(1H-benzotriazol-1-yl)-N,N,N',N'-tetramethyluronium hexafluorophosphate 、
N,N-二异丙基乙胺 作用下,
以
乙酸乙酯 、
N,N-二甲基甲酰胺 为溶剂,
生成 (2S,4R)1-Acetyl-4-(7-methoxy-2-phenyl-quinolin-4-yloxy)-pyrrolidine-2-carboxylic acid ((E)-(5R,7S)-2,2,4-trioxo-16-oxa-2Λ6-thia-3-aza-tricyclo[15.3.1.05,7]henicosa-1(20),8,17(21),18-tetraen-5-yl)-amide