申请人:Sankyo Company, Limited
公开号:US05643923A1
公开(公告)日:1997-07-01
Compounds of formula (I): ##STR1## wherein R.sup.1 is hydrogen, halogen or alkyl; R.sup.2 is hydrogen, alkyl, optionally substituted phenyl or a heterocycle; or R.sup.1 and R.sup.2 together form a group of formula --CR.sup.4 .dbd.CR.sup.5 --CR.sup.6 .dbd.CR.sup.7 --, where R.sup.4, R.sup.5, R.sup.6 and R.sup.7 are hydrogen, halogen, alkyl group, alkoxy, halomethyl, alkylamino, dialkylamino, hydroxy, nitro, aliphatic carboxylic acylamino or amino; and R.sup.3 is piperidyl, substituted piperidyl or quinuclidinyl. The compounds are useful in the treatment and prophylaxis of cognitive disorders, notably senile dementia, including Alzheimer's disease. Processes for preparing the compounds are also provided.
公式(I)的化合物:其中R.sup.1是氢,卤素或烷基;R.sup.2是氢,烷基,可选择地取代的苯基或杂环烷基;或者R.sup.1和R.sup.2一起形成一个化合物,其化学式为--CR.sup.4 .dbd.CR.sup.5 --CR.sup.6 .dbd.CR.sup.7 --,其中R.sup.4,R.sup.5,R.sup.6和R.sup.7是氢,卤素,烷基,烷氧基,卤甲基,烷基氨基,二烷基胺基,羟基,硝基,脂肪族羧酰氨基或氨基;而R.sup.3是哌啶基,取代哌啶基或喹啉基。这些化合物在治疗和预防认知障碍方面具有用途,特别是对于老年性痴呆,包括阿尔茨海默病。还提供了制备这些化合物的方法。