7-[[(7R)-8-cyclopentyl-7-ethyl-5-methyl-6-oxo-7H-pteridin-2-yl]amino]-2-(dimethylaminomethyl)-2,3-dihydrobenzofuran-4-carboxylic acid 、 、
2-(1H-Benzotriazole-1-yl)-1,1,3,3-tetramethyluronium tetrafluoroborate 、
N,N-二异丙基乙胺 、
氯化钠 在
二氯甲烷 、
水 、
氯化钠 、
magnesium sulfate 、 silica gel 、
7-[[(7R)-8-cyclopentyl-7-ethyl-5-methyl-6-oxo-7H-pteridin-2-yl]amino]-2-(dimethylaminomethyl)-N-(1-methyl-4-piperidyl)-2,3-dihydrobenzofuran-4-carboxamide 作用下,
以
二氯甲烷 为溶剂,
反应 2.0h,
以to obtain the title compound 7-[[(7R)-8-cyclopentyl-7-ethyl-5-methyl-6-oxo-7H-pteridin-2-yl]amino]-2-(dimethylaminomethyl)-N-(1-methyl-4-piperidyl)-2,3-dihydrobenzofuran-4-carboxamide 29 (27 mg, yield: 77.1%) as a white solid的产率得到7-[[(7R)-8-cyclopentyl-7-ethyl-5-methyl-6-oxo-7H-pteridin-2-yl]amino]-2-(dimethylaminomethyl)-N-(1-methyl-4-piperidyl)-2,3-dihydrobenzofuran-4-carboxamide