| abstract |
A compound represented by formula (I), an optically active isomer thereof or a pharmaceutically acceptable salt thereof, wherein X is CH or N; R 1 is C 1-6alkyl; R represents a hydrogen atom or the like; q is 0; p is 0; R is 2,3-dihydroindolyl or the like, which is used for prophylactic and / or therapeutic treatment of a disease caused by hyperactivity of tauprotein kinase 1, such as a neurodegenerative disease (e.g., Alzheimer's disease). |