ethyl (3R)-3-(N-Gly)amino-3-(3-bromo-5-chloro-2-hydroxyphenyl)propanoate hydrochloride 、
3-hydroxy-5-(3,4,5,6-tetrahydro-2H-azepin-7-ylamino)benzoic acid hydrochloride 在
N-甲基吗啉 、
氯甲酸异丁酯 作用下,
以
DMF (N,N-dimethyl-formamide) 为溶剂,
反应 18.5h,
以33.9%的产率得到ethyl (3R)-3-(3-bromo-5-chloro-2-hydroxyphenyl)-3-({N-[3-hydroxy-5-(3,4,5,6-tetrahydro-2H-azepin-7-ylamino)benzoyl]glycyl}amino)propanoate trifluoroacetate