The present invention provides a nitrogen-containing heterocyclic compound represented by formula (I):
wherein W represents a nitrogen atom or —CH—;
X represents —C(═O)— or —CHR
4
— (wherein R
4
represents a hydrogen atom, or the like);
R
1
represents a group represented by the following formula:
[wherein Q
1
represents a nitrogen atom or —CR
8
— (wherein R
8
represents a hydrogen atom, substituted or unsubstituted lower alkyl, or the like). Q
2
represents —NR
15
— (wherein R
15
represents a hydrogen atom, or the like) and R
5
and R
6
may be the same or different and each represents a hydrogen atom, substituted or unsubstituted lower alkyl, or the like]; and
R
2
and R
3
may be the same or different and each represents a hydrogen atom, halogen, substituted or unsubstituted lower alkyl, or the like} or a pharmaceutically acceptable salt thereof, and the like.
The present invention provides a nitrogen-containing heterocyclic compound represented by formula (I):
wherein W represents a nitrogen atom or -CH-;
X represents -C(=O)- or -CHR4- (wherein R4 represents a hydrogen atom, or the like);
R1 represents a group represented by the following formula:
[wherein Q1 represents a nitrogen atom or -CR8- (wherein R8 represents a hydrogen atom, substituted or unsubstituted lower alkyl, or the like), Q2 represents -NR15- (wherein R15 represents a hydrogen atom, or the like) and R5 and R6 may be the same or different and each represents a hydrogen atom, substituted or unsubstituted lower alkyl, or the like]; and
R2 and R3 may be the same or different and each represents a hydrogen atom, halogen, substituted or unsubstituted lower alkyl, or the like } or a pharmaceutically acceptable salt thereof, and the like.
A JAK inhibitor comprising, as an active ingredient, a nitrogen-containing heterocyclic compound represented by formula (I)
wherein W represents a nitrogen atom or -CH-;
X represents -C (=O) - or -CHR4- (wherein R4 represents a hydrogen atom, or the like);
R1 represents the formula described below [wherein Q1 represents-CR8-(wherein R8 represents a hydrogen atom, substituted or unsubstituted lower alkyl, or the like);
Q2 represents -NR15- (wherein R15 represents a hydrogen atom, substituted or unsubstituted lower alkyl, or the like); and R5 and R6 may be the same or different and each represents a hydrogen atom, halogen, carboxy, substituted or unsubstituted lower alkyl, or the like], or the like; and
R2 and R3 may be the same or different and each represents a hydrogen atom, halogen, substituted or unsubstituted lower alkyl, or the like} or a pharmaceutically acceptable salt thereof.