The present invention provides a novel indoline derivative or a pharmacologically acceptable salt thereof or a solvate of the derivative or a salt thereof represented by the following formula (1) that has an excellent butyrylcholinesterase inhibitory activity. In the formula, R
1
represents an alkyl group, a cycloalkyl group, a heterocycloalkyl group, an aryl group, a heteroaryl group, an arylalkyl group, a heteroarylalkyl group, a cycloalkylalkyl group, a heterocycloalkylalkyl group, a dihydrofurylalkyl group, an alkenyl group, a tetrahydronaphthyl group, or an indanyl group; R
2
represents a hydrogen atom, an alkyl group, an arylalkyl group, a cycloalkylalkyl group, a heteroarylalkyl group, a heterocycloalkylalkyl group, an aryl group, or an acyl group; R
3
each independently represents a hydrogen atom, an alkyl group, or a dialkylaminocarbonyl group; R
4
each independently represents a hydrogen atom or an alkyl group; and R
5
represents a hydrogen atom or an alkyl group. Each functional group may have a substituent.
本发明提供了一种新型
吲哚啉衍
生物或其药理上可接受的盐或衍
生物或其盐的溶剂,其由下式(1)所表示,具有良好的丁酰
胆碱酯酶抑制活性。在该式中,R1表示烷基、环烷基、杂环烷基、芳基、杂芳基、芳基烷基、杂芳基烷基、环烷基烷基、杂环烷基烷基、二氢
呋喃基烷基、烯基、四氢
萘基或
吲哚基;R2表示氢原子、烷基、芳基烷基、环烷基烷基、杂芳基烷基、杂环烷基烷基、芳基或酰基;R3各自独立地表示氢原子、烷基或二烷基
氨基甲酰基;R4各自独立地表示氢原子或烷基;R5表示氢原子或烷基。每个功能基团可以有取代基。