(3R,4R)-4-(benzyloxycarbonylamino)-1-((4-(3-methoxyphenylamino)pyrrolo[2,1-f][1,2,4]triazin-5-yl)methyl)piperidine-3-carboxylic acid 、
3,4-二甲氧基苄胺 在
(benzotriazo-1-yloxy)tris(dimethylamino)phosphonium hexafluorophosphate 、
N,N-二异丙基乙胺 作用下,
以
DMF (N,N-dimethyl-formamide) 为溶剂,
反应 4.0h,
以95%的产率得到benzyl (3R,4R)-3-((3,4-dimethoxybenzyl)carbamoyl)-1-((4-(3-methoxyphenylamino)pyrrolo[2,1-f][1,2,4]triazin-5-yl)methyl)piperidin-4-ylcarbamate