1-methoxycarbonylmethyl-1H-indole-2-carboxylic acid 、 3-amino-1,3-dihydro-5-(2,6-dimethoxy-4-methylphenyl)-1-methyl-1,4-benzodiazepin-2-one 在
(benzotriazo-1-yloxy)tris(dimethylamino)phosphonium hexafluorophosphate 、
三乙胺 作用下,
以
N-甲基乙酰胺 为溶剂,
以77%的产率得到methyl {N-[2,3-dihydro-5-(2,6-dimethoxy-4-methylphenyl)-1-methyl-2-oxo-1H-1,4-benzodiazepin-3-yl]-2-aminocarbonylindol-1-yl}acetate