Disclosed is an agent for improving learning and/or memory, which is useful for therapy of dementia accompanying disorder of memory due to a cerebrovascular disease, neurodegenerative disease such as Alzheimer's disease, endocrine disease, nutritional or metabolic disorder, infectious disease, drug addiction or the like. The agent for improving learning and/or memory according to the present invention comprises as an effective ingredient an isoquinoline derivative having a specific structure, such as (4aR,12aR)-2-methyl-4a-(3-hydroxyphenyl)-1,2,3,4,4a,5,12,12a-octahydro-quinoline[2,3-g]isoquinoline or a pharmaceutically acceptable salt thereof.
本发明公开了一种改善学习和/或记忆的制剂,可用于治疗因脑血管疾病、神经退行性疾病(如阿尔茨海默病)、内分泌疾病、营养或代谢紊乱、传染病、药物成瘾或类似疾病引起的伴随记忆障碍的痴呆症。根据本发明,改善学习和/或记忆的制剂包括作为有效成分的具有特定结构的
异喹啉衍
生物,如(4aR,12aR)-2-甲基-4a-(3-羟基苯基)-1,2,
3,4,4a,5,12,12a-八氢
喹啉[2,3-g]
异喹啉或其药学上可接受的盐。