New piperidine compounds having the formula
wherein
at least one of R³, R⁴, and R⁵ are
and the other independently are H or C1-6-alkyl,
wherein Rʹ is H, C1-8-alkyl, phenyl, thienyl, cyclopropyl, or C1-3-alkoxymethyl; and
R¹ and R⁶ independently are H or C1-6-alkyl
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.
具有以下式子的新
哌啶化合物
式中
R³、R⁴ 和 R⁵ 中至少有一个是
和 R⁵ 中至少有一个是 H 或 C1-6-烷基、
其中 Rʹ 是 H、C1-8-烷基、苯基、
噻吩基、环丙基或 C1-3- 烷氧基甲基;以及
R¹和 R⁶各自为 H 或 C1-6- 烷基
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。