The present invention provides a compound that has an excellent inhibitory activity on STAT6 activation and is effective against allergic diseases, and a medicinal composition thereof. According to the present invention, disclosed is the compound represented by the General Formula (I)
[where R
1
and R
2
independently represent a C
1-6
alkyl group and the like that may have a hydrogen atom or a substituent;
R
3
represents a C
1-6
alkyl group and the like that may have a substituent;
R
4
and R
5
independent represents a hydrogen atom or a C
1-6
alkyl group and the like that may have a substituent;
R
6
represents a hydrogen atom and the like;
W represents —SO
2
— and the like; and X represents a sulphur atom and the like.]or a salt thereof, or a hydrate thereof.