Dihydro-1,4-oxazino(2,3-c)quinolines, a process and intermediates for the preparation thereof and their use as medicaments
申请人:HOECHST-ROUSSEL
PHARMACEUTICALS INCORPORATED
公开号:EP0299345A2
公开(公告)日:1989-01-18
The present application relates to compounds of the formula I
where X is hydrogen, loweralkyl, loweralkoxy, hydroxy, halogen, nitro or trifluoromethyl; R₁ is hydrogen or loweralkyl; R₂ is hydrogen, loweralkyl, arylloweralkyl or -(CH₂)mR₇ wherein m is 1, 2 or 3 and R₇ is cyano or amino; R₃ and R₄ are independently hydrogen or loweralkyl; R₅ and R₆ are independently hydrogen or loweralkyl, or R₅+R₆ taken together with the carbon atom to which they are attached constitute a cyclobutane, cyclopentane, cyclohexane, cycloheptane, pyrrolidine, piperidine, morpholine or thiomorpholine ring, or R₅ is hydrogen and R₆ is aryl or -CH₂OR₈ wherein R₈ is hydrogen, loweralkyl or loweralkylcarbonyl, which are useful for enhancing memory. and a process for their preparation.
The invention relates also to compounds of the formula II
where X, R₁ and R₃ through R₆ are as defined earlier and R₉ is hydrogen or bromine (with the proviso that when R₁=R₃=R₄=R₅=R₆=R₉=H, X is not 7-chloro) which are also useful for enhancing memory and for preparing compounds of formula I.
本申请涉及式 I 的化合物
其中 X 是氢、低级烷基、低级烷氧基、羟基、卤素、硝基或三氟甲基;R₁ 是氢或低级烷基;R₂ 是氢、低级烷基、芳基低级烷基或-(CH₂)mR₇,其中 m 是 1、2 或 3,R₇ 是氰基或氨基;R₃ 和 R₄ 独立地是氢或低级烷基;R₅ 和 R₆ 独立地为氢或低级烷基,或 R₅+R₆ 与它们所连接的碳原子一起构成环丁烷、环戊烷、环己烷、环庚烷吡咯烷、哌啶、吗啉或硫代吗啉环,或 R₅ 为氢且 R₆ 为芳基或 -CH₂OR₈ 其中 R₈ 为氢、低级烷基或低级烷基羰基。及其制备工艺。
本发明还涉及式 II 的化合物
其中 X、R₁ 和 R₃ 至 R₆ 如前定义,R₉ 是氢或溴 (但当 R₁=R₃=R₄=R₅=R₆=R₉=H 时,X 不是 7-氯),这些化合物也有助于增强记忆力和制备式 I 的化合物。