摘要 |
A pyrimidone derivative represented by the formula (I) or a salts thereof: wherein R<SUP>1 </SUP>represents an alkyl group, an alkenyl group, an alkynyl group, a cycloalkyl group, an aryl group and the like; R<SUP>2 </SUP>represents a hydrogen atom, hydroxyl group, an alkyl group, an alkenyl group and the like, R<SUP>3 </SUP>represents a pyridyl group, and a medicament comprising said derivative or a salt thereof as an active ingredient which is used for preventive and/or therapeutic treatment of a disease caused by tau protein kinase 1 hyperactivity such as Alzheimer disease.
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