Patent ID: 6949571

Claim:
A compound represented by the following formula, a salt thereof or a hydrate thereof, wherein Q indicates O, R 3 and R 5 are the same as or different from each other and each indicates a hydrogen atom or a C 1-6 alkyl group; and R 1 indicates a C 3-8 cycloalkyl group, a 5 to 14 membered non-aromatic heterocyclic group, a C 6-14 aromatic hydrocarbocyclic group, or a 5 to 14 membered aromatic heterocyclic group, which may be substituted, respectively, and R 2 and R 4 are the same as or different from each other and each indicates a group represented by the formula —X-A wherein X indicates a single bond and A indicates a C 3-6 cycloalkyl group, a 5 to 14 membered non-aromatic heterocyclic group, a C 6-14 aromatic hydrocarbocyclic group, or a 5 to 14 membered aromatic heterocyclic group, which may be substituted, respectively.