3-amino-3-methyl-N-[2,3,4,5-tetrahydro-2-oxo-1-[[2'-(1H-tetrazol-5-yl)[1,1'-biphenyl]-4-yl]methyl]-1H-1-benzazepin-3(R)-yl]-butanamide, trifluoroacetate 、
三乙胺 、
二碳酸二叔丁酯 在
silica 、 Acetonitrile;ethyl acetate;methanol 作用下,
以
二氯甲烷 为溶剂,
反应 14.0h,
以to afford 42 mg of product (0.069 mmol, 86%)的产率得到3-(t-Butoxycarbonylamino)-3-methyl-N-[2,3,4,5-tetrahydro-2-oxo-1-[[2'-(1H-tetrazol-5-yl)[1,1'-biphenyl]-4-yl]methyl]-1H-1-benzazepin-3(R)-yl]-butanamide