2-(Piperidin-4-yl, pyridin-4-yl and tetrahydropyridin-4-yl)benzofuran-7-ol and carbamate derivatives, their preparation and their use as acetylcholinesterase inhibitors
申请人:HOECHST-ROUSSEL PHARMACEUTICALS INCORPORATED
公开号:EP0637586A1
公开(公告)日:1995-02-08
2-(piperidin-4-yl, pyridin-4-yl and tetrahydropyridin-4-yl)benzofuran-7-ol and carbamate derivatives of the formula I
wherein
R₁is hydrogen, loweralkyl, arylloweralkyl, CONHR₅ or CONR₆R₇
R₂is hydrogen, cyano, CH₂NR₈R₉, CONHR₅ or CONR₆R₇;
R₃is
where R₁₀ is hydrogen, loweralkyl, arylloweralkyl, CONHR₅, CONR₆R₇, acyl, acyloxyloweralkyl or acyloxyarylloweralkyl;
R₄is hydrogen, halogen, loweralkyl or loweralkoxy;
R₅is hydrogen, loweralkyl or arylloweralkyl;
R₆is loweralkyl or arylloweralkyl;
R₇is loweralkyl or arylloweralkyl;
R₈is hydrogen, loweralkyl, arylloweralkyl or acyl;
R₉is hydrogen, loweralkyl or arylloweralkyl;
R₁₁is loweralkyl, aryl or arylloweralkyl;
with the proviso that if R₁ is hydrogen or loweralkyl, R₂ cannot be hydrogen; or a pharmaceutically acceptable acid addition salt thereof, or where applicable, an optical or geometric isomer or racemic mixture thereof, which are useful as acetylcholinesterase inhibitors and as such may be useful for the treatment of Alzheimer's disease and other senile dementias.
式 I 的 2-(哌啶-4-基、吡啶-4-基和四氢吡啶-4-基)苯并呋喃-7-醇和氨基甲酸酯衍生物
其中
R₁ 是氢、低级烷基、芳基低级烷基、CONHR₅ 或 CONR₆R₇
R₂ 是氢、氰基、CH₂NR₈R₉、CONHR₅ 或 CONR₆R₇;
R₃为
其中 R₁₀ 是氢、低级烷基、芳基低级烷基、CONHR₅、CONR₆R₇、酰基、酰氧基低级烷基或酰氧基芳基低级烷基;
R₄ 是氢、卤素、低级烷基或低级烷氧基;
R₅ 是氢、低级烷基或芳基低级烷基;
R₆ 是低级烷基或芳基低级烷基;
R₇是低级烷基或芳基低级烷基;
R₈ 是氢、低级烷基、芳低级烷基或酰基;
R𠢙 是氢、低级烷基或芳基低级烷基;
R₁₁是低级烷基、芳基或芳基低级烷基;
但如果 R₁ 是氢或低级烷基,R₂ 不能是氢;或其药学上可接受的酸加成盐,或在适用的情况下,其光学或几何异构体或外消旋混合物,可用作乙酰胆碱酯酶抑制剂,因此可用于治疗阿尔茨海默病和其他老年痴呆症。