申请人:Taiho Pharmaceutical Company, Ltd.
公开号:US05229402A1
公开(公告)日:1993-07-20
The present invention provides a carbamoyl-2-pyrrolidinone compound which has the following formula (2) and is useful as medicaments for treating senile dementia, i.e., as cerebral function improving agents and cerebral metabolism activators or anoxic brain damage protectives ##STR1## wherein R.sup.1 is a hydrogen atom, hydroxyl or lower alkyl substituted or unsubstituted with hydroxyl, and R.sup.3 is phenyl, tetrahydronaphthyl, pyridyl or thiazolyl having or not having lower alkoxyl, lower alkylamino, a halogen atom or halogenomethyl as a substituent. Further, the present invention provides novel carbamoyl-2-pyrrolidinone compounds represented by the formula ##STR2## wherein R.sup.1 is a hydrogen atom, hydroxyl or lower alkyl substituted or unsubstituted with hydroxyl, and R.sup.2 is phenyl, tetrahydronaphthyl, pyridyl or thiazolyl having or not having methoxy or lower alkylamino as a substituent, provided that when R.sup.1 is a hydrogen atom or unsubstituted lower alkyl, R.sup.2 is not unsubstituted phenyl.
本发明提供了一种具有以下结构式(2)的氨基甲酰基-2-吡咯烷酮化合物,可用作治疗老年性痴呆症的药物,即作为改善脑功能的药物和脑代谢活化剂或缺氧性脑损伤保护剂。其中,R1是氢原子、羟基或被羟基取代或未被取代的较低烷基,R3是苯基、四氢萘基、吡啶基或噻唑基,具有或不具有较低烷氧基、较低烷基氨基、卤原子或卤代甲基作为取代基。此外,本发明提供了新的氨基甲酰基-2-吡咯烷酮化合物,其表示为以下结构式(3):其中,R1是氢原子、羟基或被羟基取代或未被取代的较低烷基,R2是苯基、四氢萘基、吡啶基或噻唑基,具有或不具有甲氧基或较低烷基氨基作为取代基,但当R1是氢原子或未被取代的较低烷基时,R2不是未被取代的苯基。