tert-butyl (2S)-5-[2-[2-[2-[2-[2-[2-[3-[(10R,15S)-13-butyl-12,14-dioxo-8,11,13-triazatetracyclo[7.7.0.02,7.011,15]hexadeca-1(9),2,4,6-tetraen-10-yl]phenoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethylamino]-2-[[4-[(2,4-diaminopteridin-6-yl)methyl-methylamino]benzoyl]amino]-5-oxopentanoate 在
三氟乙酸 作用下,
以
二氯甲烷 为溶剂,
反应 5.0h,
以66.4%的产率得到(2S)-5-[2-[2-[2-[2-[2-[2-[3-[(10R,15S)-13-butyl-12,14-dioxo-8,11,13-triazatetracyclo[7.7.0.02,7.011,15]hexadeca-1(9),2,4,6-tetraen-10-yl]phenoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethylamino]-2-[[4-[(2,4-diaminopteridin-6-yl)methyl-methylamino]benzoyl]amino]-5-oxopentanoic acid