Compounds useful as agents for the prevention or treatment of a disease associated with abnormal serum uric acid level and the like. Fused heterocyclic derivatives represented by the following formula (I) having xanthine oxidase inhibitory activities and useful as agents for the prevention or treatment of a disease associated with abnormality of serum uric acid level, or prodrugs thereof, or pharmaceutically acceptable salts thereof. In the formula (I), ring U represents C
6-10
aryl or the like; R
1
independently represents a hydrogen atom, a hydroxy group, C
1-6
alkyl or the like; m represents an integral number from 1 to 2; ring Q represents 5-membered heteroaryl; n represents an integral number from 1 to 3; R
2
independently represents a hydrogen atom, a halogen atom, C
1-6
alkyl or the like.
具有预防或治疗与异常血清
尿酸水平相关的疾病的功效的化合物,以及具有
黄嘌呤氧化酶抑制活性的融合杂环衍
生物,其表示为以下公式(I)的化合物,可用作预防或治疗与血清
尿酸水平异常相关的疾病的药物,或其前药,或其药学上可接受的盐。在公式(I)中,环U表示C6-10芳基或类似物;R1独立表示氢原子,羟基,C1-6烷基或类似物;m表示从1到2的整数;环Q表示5-成员杂环芳基;n表示从1到3的整数;R2独立表示氢原子,卤原子,C1-6烷基或类似物。