(3S)-5-cyclopropylmethyl-1-methyl-2-oxo-2,3,4,5-tetrahydro-1H benzo[b][1,4]-diazepin-3-yl-ammonium trifluoroacetate 、
(2R)-4-methyl-2-((1-propyl-1H-tetrazol-5-yl)methyl)-pentanoic Acid 在
2-(7-aza-1H-benzotriazol-1-yl)-1,1,3,3-tetratetramethyluronium hexafluorophosphate 、
二乙基异丙基胺 作用下,
以
DMF (N,N-dimethyl-formamide) 为溶剂,
反应 24.25h,
以59%的产率得到4-methyl-2-(1-propyl-1H-tetrazol-5-ylmethyl)-pentanoic acid (1,5-bis-cyclopropylmethyl-2-oxo-2,3,4,5-tetrahydro-1H-benzo[b][1,5]diazepin-3-yl)-amide