A compound represented by the formula (I) or a pharmaceutically acceptable salt thereof:
wherein Z represents nitrogen atom, C—F or the like; R
1
represents a C
1
-C
3
alkyl group; Y represents oxygen atom or N—R
7
; R
2
, R
3
, R
4
, R
5
, R
6
and R
7
each independently represents hydrogen atom, a C
1
-C
6
alkyl group, or a group represented by the formula (II):
which is used for preventive and/or therapeutic treatment of a disease caused by tau protein kinase 1 hyperactivity such as a neurodegenerative diseases (e.g. Alzheimer disease).
A compound represented by the formula (I) or a pharmaceutically acceptable salt thereof:
wherein Z represents nitrogen atom, C—F or the like; R1 represents a C1-C3 alkyl group;
Y represents oxygen atom or N—R7; R2, R3, R4, R5, R6 and R7 each independently represents hydrogen atom, a C1-C6 alkyl group, or a group represented by the formula (II):
which is used for preventive and/or therapeutic treatment of a disease caused by tau protein kinase 1 hyperactivity such as a neurodegenerative diseases (e.g. Alzheimer disease).