[EN] PROCESS FOR PREPARING 3-(2-(4-(6-FLUOROBENZO(D) ISOXAZOL-3-YL)-PIPERIDIN-1YL)-ETHYL)-2-METHYL-6,7,8,9-TETRAHYDRO-4H-PYRIDO-(1,2-A) PYRIMIDIN-4-ONE<br/>[FR] PROCEDE DE PREPARATION DE 3-(2-(4-(6-FLUOROBENZO(D) ISOXAZOL-3-YL)-PIPERIDIN-1YL)-ETHYL)-2-METHYL-6,7,8,9-TETRAHYDRO-4H-PYRIDO-(1,2-A) PYRIMIDIN-4-ONE
申请人:FERRER INT
公开号:WO2003074522A1
公开(公告)日:2003-09-12
The process consists in condensing (2-methyl-6,7,8,9-tetrahydro-4H-pyrido-[1,2-a] pyrimidin-3-yl)-acetaldehyde with 6-fluoro-3-piperidinyl)-1,2-benzisoxazole to yield the intermediate enamine, 3-[2-[4-(6-fluorobenzo[d]isoxazol-3-yl)-piperidin-1-yl]vinyl}-2-methyl-6,7,8,9-tetrahydro-pyrido [1,2,-a] pyrimidin-4-one followed by reduction of such an enamine.
该过程包括将(2-甲基-6,7,8,9-四氢-4H-吡啶-[1,2-a]嘧啶-3-基)-乙醛与6-氟-3-哌啶基)-1,2-苯并异噁唑烯缩合,得到中间体烯胺,3-[2-[4-(6-氟苯并异噁唑-3-基)-哌啶-1-基]乙烯基}-2-甲基-6,7,8,9-四氢-吡啶[1,2,-a]嘧啶-4-酮,然后还原这种烯胺。