JAK INHIBITOR

摘要

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 -CHR 4 - (wherein R 4 represents a hydrogen atom, or the like);
R 1 represents the formula described below [wherein Q 1 represents-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, substituted or unsubstituted lower alkyl, or the like); and R 5 and R 6 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
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.