tert-butyl (2S)-2-[[4-[(2,4-diaminopteridin-6-yl)methyl-methylamino]benzoyl]amino]-5-[2-[2-[2-[2-[2-[2-[[4-[(10R,15S)-10-(3-hydroxyphenyl)-12,14-dioxo-8,11,13-triazatetracyclo[7.7.0.02,7.011,15]hexadeca-1(9),2,4,6-tetraen-13-yl]benzoyl]amino]ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethylamino]-5-oxopentanoate 在
三氟乙酸 作用下,
以
二氯甲烷 为溶剂,
反应 5.0h,
以55%的产率得到(2S)-2-[[4-[(2,4-diaminopteridin-6-yl)methyl-methylamino]benzoyl]amino]-5-[2-[2-[2-[2-[2-[2-[[4-[(10R,15S)-10-(3-hydroxyphenyl)-12,14-dioxo-8,11,13-triazatetracyclo[7.7.0.02,7.011,15]hexadeca-1(9),2,4,6-tetraen-13-yl]benzoyl]amino]ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethylamino]-5-oxopentanoic acid