{2-[5-(BOC-amino)-2-hydroxybenzoylamino]}ethyl 4-nitrophenyl carbonate 、 2-[2,5-bis-(benzyloxy)benzoyl-amino]ethylamine 在
乙酸乙酯 、
异丙醚 作用下,
以
N,N-二甲基甲酰胺 为溶剂,
反应 20.0h,
以to give pure 2-[5-(BOC-amino)-2-hydroxy-benzoylamino]ethyl 2-[2,5-bis-(benzyloxy)benzoylamino]ethylcarbamate (500 mg, 100%) as a colorless solid的产率得到2-[5-(BOC-amino)-2-hydroxybenzoylamino]ethyl 2-[2,5-bis-(benzyloxy)benzoylamino]ethylcarbamate