PROBLEM TO BE SOLVED: To provide a compound having an inhibitory effect on FATP4.SOLUTION: The heterocyclic 5-membered ring compound is represented by formula (I) (wherein A is carbonyl or methylene； X is a methylene group, oxygen atom or nitrogen atom； Y and W are the same or different and are a methine group or nitrogen atom； Z is a methylene group, oxygen atom or nitrogen atom； Ar is a substituted benzene ring, substituted pyridine ring or substituted thiophene ring； R1 is -CO-NR6R7, -CO2-R8, -NHCO-R9 or the like) or a pharmaceutically acceptable salt thereof.COPYRIGHT: (C)2012,JPO&INPIT【課題】ＦＡＴＰ４阻害作用を有する化合物の提供。【解決手段】下記式（Ｉ）で表されるヘテロ５員環化合物又はその製薬学的に許容される塩。式（Ｉ）中、Ａはカルボニル又はメチレン基を示し、Ｘはメチレン基、酸素原子又は窒素原子を示し、Ｙ及びＷは同一又は異なって、メチン基又は窒素原子を示し、Ｚはメチレン基、酸素原子又は窒素原子を示し、Ａｒは置換ベンゼン環、置換ピリジン環又は置換チオフェン環を示し、Ｒ1は－ＣＯ－ＮＲ6Ｒ7、－ＣＯ2－Ｒ8、－ＮＨＣＯ－Ｒ9等を示す。【選択図】なし
