PROBLEM TO BE SOLVED: To provide a compound having excellent xanthine oxidase inhibitory activity and a treatment agent or a prevention agent for diseases related to xanthine oxidase, such as gout, hyperuricemia, tumor collapse syndrome, urinary calculus, hypertension, lipid abnormality, diabetes, cardiovascular diseases such as arteriosclerosis and cardiac failure, kidney diseases such as diabetic nephropathy, respiratory diseases such as chronic obstructive pulmonary disease, inflammatory bowel diseases or autoimmune diseases.SOLUTION: There is provided a compound represented by the formula (I), a pharmaceutically acceptable salt thereof, or a pharmaceutical or a pharmaceutical composition containing them as active ingredients.SELECTED DRAWING: NoneCOPYRIGHT: (C)2017,JPO&INPIT【課題】優れたキサンチンオキシダーゼ阻害活性を有する化合物を提供すること、および痛風、高尿酸血症、腫瘍崩壊症候群、尿路結石、高血圧症、脂質異常症、糖尿病、動脈硬化症や心不全等の心血管疾患、糖尿病性腎症等の腎疾患、慢性閉塞性肺疾患等の呼吸器疾患、炎症性腸疾患または自己免疫性疾患等、キサンチンオキシダーゼの関与する疾患の治療薬または予防薬を提供すること。【解決手段】式(I)で表される化合物、もしくはその製薬学的に許容される塩、またはそれらを有効成分として含有する医薬もしくは医薬組成物。【化1】【選択図】なし
