3-(4-piperidinyl)-1,3,4,5-tetrahydro-1,3-benzodiazepin-2-one 、 (S)-2-(3-chloro-4-hydroxy-5-trifluoromethyl-benzyl)-succinic acid 1-methyl ester 在
O-(benzotriazol-1-yl)-N,N,N',N'-tetramethyluronium tetrafluoroborate 、
三乙胺 作用下,
以
DMF (N,N-dimethyl-formamide) 为溶剂,
反应 12.0h,
以65%的产率得到(S)-2-(3-chloro-4-hydroxy-5-trifluoromethyl-benzyl)-4-oxo-4-[4-(2-oxo-1,2,4,5-tetrahydro-benzo[d][1,3]diazepin-3-yl)-piperidin-1-yl]-butanoic acid methyl ester