(8S)-2-(morpholin-4-yl)-8-(trifluoromethyl)-6,7,8,9-tetrahydro-4H-pyrimido[1,2-a]pyrimidin-4-one 、
sodium;hydride 、
2,6-二氟苯甲酰氯 、
methanol-dichloromethane 以
四氢呋喃 为溶剂,
以gradient of 100/0 to 98/02 then 98/1 and 98/2), 22 mg of (8S)-9-[(2,6-difluorophenyl)carbonyl]-2-(morpholin-4-yl)-8-(trifluoromethyl)-6,7,8,9-tetrahydro-4 H-pyrimido[1,2-a]pyrimidin-4-one are obtained in the form of a white solid的产率得到(8S)-9-[(2,6-difluorophenyl)carbonyl]-2-(morpholin-4-yl)-8-(trifluoromethyl)-6,7,8,9-tetrahydro-4H-pyrimido[1,2-a]pyrimidin-4-one