methyl (2S)-2-amino-5-[5-[5-[[(4S)-4-amino-5-methoxy-5-oxopentanoyl]amino]pentyl-[2-[2-[2-[(2-methylpropan-2-yl)oxycarbonylamino]ethoxy]ethoxy]ethyl]amino]pentylamino]-5-oxopentanoate 、
4-[N-(2,4-二氨基-6-蝶啶甲基)-N-甲氨基]苯甲酸半盐酸盐n水 在
1-羟基苯并三唑 、
盐酸-N-乙基-Nˊ-(3-二甲氨基丙基)碳二亚胺 、
三乙胺 作用下,
以
N,N-二甲基甲酰胺 为溶剂,
反应 18.0h,
以45%的产率得到methyl (2S)-2-[[4-[(2,4-diaminopteridin-6-yl)methyl-methylamino]benzoyl]amino]-5-[5-[5-[[(4S)-4-[[4-[(2,4-diaminopteridin-6-yl)methyl-methylamino]benzoyl]amino]-5-methoxy-5-oxopentanoyl]amino]pentyl-[2-[2-[2-[(2-methylpropan-2-yl)oxycarbonylamino]ethoxy]ethoxy]ethyl]amino]pentylamino]-5-oxopentanoate