5-chloroisatoic acid 2-isopropyl ester 、 (3S)-3-amino-N-cyclopropyl-2-hydroxy-4-((3R,5R)-5-methyl-2-oxopyrrolidin-3-yl)butanamide 在
N,N-二异丙基乙胺 、 (1,2,3-benzotriazol-1-yloxy)tris(dimethylamino)phosphanium hexafluoro-lambda5-phosphanuide 作用下,
以
N-甲基吡咯烷酮 为溶剂,
生成 isopropyl (4-chloro-2-(((2S)-4-(cyclopropylamino)-3-hydroxy-1-((3S,5R)-5-methyl-2-oxopyrrolidin-3-yl)-4-oxobutan-2-yl)carbamoyl)phenyl)carbamate