PROBLEM TO BE SOLVED: To provide a compound showing not only a C5a receptor antagonistic activity but high activity in biological availability, compared to its racemate.SOLUTION: A compound represented by formula (I) is disclosed, or a pharmacologically acceptable salt thereof or a hydrate thereof or a solvate thereof is disclosed.COPYRIGHT: (C)2013,JPO&INPIT【課題】ラセミ体と比較し、C5a受容体拮抗活性のみならず、生物学的利用率においても高活性を示す化合物の提供。【解決手段】下記式(I)で示される化合物若しくはその薬理学的に許容される塩又はそれらの水和物若しくは溶媒和物。【選択図】なし