申请人:Kii Satoshi
公开号:US20090306375A1
公开(公告)日:2009-12-10
The present invention provides a process for producing a 4(3H)-quinazolinone derivative, which is useful as a medicinal substance, with better efficiency in an industrial scale. The process comprises the steps of reacting 4-hydroxy-N-tert-butoxycarbonylpiperidine with 4-fluoro-1-nitrobenzene in the presence of sodium hydride, reacting the resulting product with cyclobutanone, reducing the resulting product to give 4-(1-cyclobutyl-4-piperidinyl)oxyaniline, and reacting this compound with 2-methyl-5-trifluoromethyl-4H-3,1-benzoxazin-4-one to give 3-4-[(1-cyclobutyl-4-piperidinyl)oxy]phenyl}-2-methyl-5-trifluoromethyl-4(3H)-quinazolinone.
本发明提供了一种生产4(3H)-喹唑啉酮衍生物的过程,该衍生物在工业规模上具有更高的效率,可用作药用物质。该过程包括以下步骤:在氢化钠存在下,将4-羟基-N-叔丁氧羰基哌啶与4-氟-1-硝基苯反应,将所得产物与环丁酮反应,将所得产物还原以得到4-(1-环丁基-4-哌啶基)氧基苯胺,然后将该化合物与2-甲基-5-三氟甲基-4H-3,1-苯并噁唑啉-4-酮反应,得到3-4-[(1-环丁基-4-哌啶基)氧基]苯基}-2-甲基-5-三氟甲基-4(3H)-喹唑啉酮。