Boc-O-苄基-L-酪氨酸 、 2-methyl-1-[1,2,4]triazolo[3,4-a]phthalazin-3-yl-propylamine p-toluenesulphonate salt 在
N,N-二异丙基乙胺 、 N-[(dimethylamino)-3-oxo-1H-1,2,3-triazolo[4,5-b]pyridin-1-yl-methylene]-N-methylmethanaminium hexafluorophosphate 作用下,
以
N,N-二甲基甲酰胺 为溶剂,
以97.65%的产率得到[2-(4-benzyloxy-phenyl)-1-(2-methyl-1-[1,2,4]triazolo[3,4-a]phthalazin-3-yl-propylcarbamoyl)-ethyl]-carbamic acid tert-butyl ester