3-(cyclopropanecarbonyl)benzoic acid 、 N-[(4S,8S)-10-(hydrazinecarbonyl)-4,7,8,9-tetrahydro-5H-4,8-epiminooxocino[5,4-d][1,3]thiazol-2-yl]-N'-methylurea 在
(benzotriazo-1-yloxy)tris(dimethylamino)phosphonium hexafluorophosphate 、
三乙胺 作用下,
以
N,N-二甲基甲酰胺 为溶剂,
以100%的产率得到N-[(4S,8S)-10-{2-[3-(cyclopropanecarbonyl)benzoyl]hydrazinecarbonyl}-4,7,8,9-tetrahydro-5H-4,8-epiminooxocino[5,4-d][1,3]thiazol-2-yl]-N'-methylurea