The present invention provides a preventive and/or therapeutic agent for neutrophilic inflammatory diseases which comprises as an active ingredient, a bicyclic heterocyclic compound represented by formula (I):
[wherein R
1
represents a hydrogen atom, substituted or unsubstituted alkyl, or the like, A
1
-A
2
-A
3
-A
4
represents N═CR
3
—CR
4
═CR
5
(wherein R
3
, R
4
, and R
5
are the same or different and each represents a hydrogen atom, substituted or unsubstituted lower alkyl, and the like), Q represents substituted or unsubstituted phenylene, and the like, and T represents substituted or unsubstituted lower alkyl, substituted or unsubstituted aroyl, and the like].
本发明提供了一种用于中性粒细胞炎症性疾病的预防和/或治疗剂,其包括以下式(I)所表示的双环
杂环化合物作为活性成分:[其中,R1代表
氢原子,取代或未取代的烷基等;A1-A2-A3-A4代表N═CR3—CR4═CR5(其中,R3、R4和R5相同或不同,每个代表
氢原子、取代或未取代的低
碳基等);Q代表取代或未取代的
苯基等;T代表取代或未取代的低
碳基、取代或未取代的芳香基等]。