tert-butyl 1-(4-(3-(2-methoxyethyl)-2-(methylsulfonyl)-4-oxo-5-phenyl-3,4-dihydrofuro[2,3-d]pyrimidin-6-yl)phenyl)cyclobutylcarbamate 、
甲胺 在
silica gel 、
methanol-dichloromethane 作用下,
反应 2.0h,
以affording tert-butyl 1-(4-(3-(2-methoxyethyl)-2-(methylamino)-4-oxo-5-phenyl-3,4-dihydrofuro[2,3-d]pyrimidin-6-yl)phenyl)cyclobutylcarbamate (29.4 mg, 0.054 mmol, 90%) as an oil的产率得到tert-butyl 1-(4-(3-(2-methoxyethyl)-2-(methylamino)-4-oxo-5-phenyl-3,4-dihydrofuro[2,3-d]pyrimidin-6-yl)phenyl)cyclobutylcarbamate