4-({4-({4-tert-butoxycarbonylamino-1-[1-(4-methoxy-phenyl)-ethyl]-5-oxo-pyrrolidine-3-carbonyl}-amino)-1-[1-(4-methoxy-phenyl)-ethyl]-5-oxo-pyrrolidine-3-carbonyl}-amino)-1-[1-(4-methoxy-phenyl)-ethyl]-5-oxo-pyrrolidine-3-carboxylic acid methyl ester 在
sodium hydroxide 作用下,
以
甲醇 为溶剂,
反应 12.0h,
以90%的产率得到4-({4-({4-tert-butoxycarbonylamino-1-[1-(4-methoxy-phenyl)-ethyl]-5-oxo-pyrrolidine-3-carbonyl}-amino)-1-[1-(4-methoxy-phenyl)-ethyl]-5-oxo-pyrrolidine-3-carbonyl}-amino)-1-[1-(4-methoxy-phenyl)-ethyl]-5-oxo-pyrrolidine-3-carboxylic acid