申请人:NIPPON SHINYAKU COMPANY, LIMITED
公开号:EP0555478A1
公开(公告)日:1993-08-18
The invention aims at obtaining a novel compound which is excellent in central nervous system selectivity and reduced in side effects and has an activity of improving the function of learning and memory, thus providing an excellent medicine for dementia. The invention relates to a compound represented by general formula (I), a pharmacologically acceptable salt thereof, and an agent for remedying the disturbance of learning and memory containing the same as the active ingredient of formula (I), wherein R¹ and R² may be the same or different from each other and each represents hydrogen, hydroxy, alkoxy, trifluoromethyl or halogen; A represents methyl, trifluoromethyl or tertbutyl; and Y represents O or NH.
本发明旨在获得一种新型化合物,该化合物具有良好的中枢神经系统选择性和较低的副作用,并具有改善学习和记忆功能的活性,从而提供了一种治疗痴呆症的良药。本发明涉及通式(I)代表的化合物、其药理上可接受的盐,以及含有通式(I)活性成分的治疗学习和记忆障碍的药物,其中R¹和R²可以相同或不同,各自代表氢、羟基、烷氧基、三氟甲基或卤素;A代表甲基、三氟甲基或叔丁基;Y代表O或NH。