1-(2-(aminomethyl)-5-fluorophenyl)piperidin-2-one hydrochloride salt 、
3-(benzyloxy)-9,9-dimethyl-4-oxo-4,6,7,9-tetrahydropyrimido[2,1-c][1,4]oxazine-2-carboxylic acid 在
benzotriazole-1-yloxy-tris-pyrrolidino-phosphonium hexafluorophosphate 、
N,N-二异丙基乙胺 作用下,
以
DMF (N,N-dimethyl-formamide) 、
乙腈 为溶剂,
反应 3.0h,
以88%的产率得到N-(4-fluoro-2-(2-oxopiperidin-1-yl)benzyl)-3-(benzyloxy)-9,9-dimethyl-4-oxo-4,6,7,9-tetrahydropyrimido[2,1-c][1,4]oxazin-4 (9H)-one