Disclosed is an aryl-substituted nitrogen-containing heterocyclic compound represented by the formula (I) below or a pharmaceutically acceptable salt thereof. This compound serves as nociceptin receptor antagonist and is useful as a pharmaceutical agent for treating diseases associated with a nociceptin receptor. (I)
[in the formula, A
1
, A
2
and A
3
independently represent a carbon atom or a nitrogen atom, and one or two of A
1
, A
2
and A
3
represent a carbon atom; R
1
represents a lower alkyl group or the like; R
2
represents a phenyl group which may be substituted with a halogen atom or the like; R
3
represents a hydrogen atom, a lower alkyl group or the like; and R
4
represents a lower alkyl group or the like.]
本发明公开了一种芳基取代的含氮
杂环化合物,其
化学式如下(I),或其药学上可接受的盐。该化合物作为伤害感受受体拮抗剂,并且可用作治疗与伤害感受受体相关的疾病的药物。 (I)[在该式中,A1,A2和A3独立地表示碳原子或氮原子,其中一个或两个A1,A2和A3表示碳原子;R1表示较低的烷基或类似物;R2表示苯基,其可以用卤素原子或类似物取代;R3表示氢原子,较低的烷基或类似物;R4表示较低的烷基或类似物。]