PROBLEM TO BE SOLVED: To provide a glutaminyl cyclase (QC) inhibitor for the treatment and prevention of an inflammatory disease or the like selected from mild cognitive impairment, restenosis, and pancreatitis, use of the inhibitor, and a diagnostic assay and kit including the inhibitor.SOLUTION: This invention provides a compound represented by the formula 1*, use of the compound, and a diagnostic assay and kit including the compound.COPYRIGHT: (C)2014,JPO&INPIT【課題】軽度認知障害及び、再狭窄、膵炎から選択される炎症性疾患等の治療及び予防のためのグルタミニルシクラーゼ(QC)阻害剤及び該QC阻害剤の使用、該QC阻害剤を含む診断アッセイ及び診断キットの提供。【解決手段】下記式1*に代表される化合物及び該化合物の使用、該化合物を含む診断アッセイ及び診断キットの提供。【選択図】なし