Novel azacyclic compounds selected from the group consisting of
wherein
R¹ is H or C₁₋₆-alkyl
wherein R′ is C₃₋₈-alkyl, cyclopropyl, C₄₋₈-cycloalkyl, benzyl which may be substituted, or C₁₋₄-alkoxy-C₁₋₄-alkyl, and
R˝ is H or C₁₋₈-alkyl or C₁₋₆-alkoxy or C₁₋₄-alkoxy-C₁₋₄-alkyl or aryl, and
R‴ is H or C₁₋₆-alkyl or C₄₋₈-cycloalkyl; and
R⁴ is H, C₁₋₈-alkyl or Cl; and
provided that R³ is not
wherein R′ is C₃₋₈-alkyl, cyclopropyl or C₁₋₃-alkoxymethyl, and provided that R³ is not -CH=N-OR‴, wherein R‴ is H or C₁₋₆-alkyl, when the compounds of formula I is
and a salt thereof with a pharmaceutically-acceptable acid.
The new compounds are useful in improving the cognitive functions of the forebrain and hippocampus of mammals, and are useful in the treatment of Alzheimer's disease.
选自以下组别的新型氮
杂环化合物
其中
R¹ 是 H 或 C₁₋₆ 烷基
其中 R′是 C₃₋₈-烷基、环丙基、C₄₋₈-环烷基、可能被取代的苄基或 C₁₋₄-alkoxy-C₁₋₄- 烷基,以及
R˝ 是 H 或 C₁₋₈- 烷基或 C₁₋₆- 烷氧基或 C₁₋₄- 烷氧基-C₁₋₄-烷基或芳基,以及
R‴ 是 H 或 C₁₋₆-烷基或 C₄₋₈-环烷基;和
R⁴ 是 H、C₁₋₈-烷基或 Cl;以及
只要 R³ 不是
其中 R′是 C₃₋₈-烷基、环丙基或 C₁₋₃-烷氧基甲基,并且只要 R³ 不是 -CH=N-OR‴,其中 R‴ 是 H 或 C₁₋₆- 烷基,则式 I 的化合物是
及其与药学上可接受的酸的盐。
新化合物有助于改善哺乳动物前脑和海马的认知功能,并可用于治疗阿尔茨海默氏症。