The invention relates to a pyrimidone derivative represented by formula (I) or a salt thereof wherein:
X represents two hydrogen atoms, a sulphur atom, an oxygen atom or a C1-2 alkyl group and a hydrogen atom;
Y represents a bond, an ethenylene group, an ethynylene group or a methylene group optionally substituted by one or two groups chosen from a C1-6 alkyl group, a hydroxy group or a C1-4 alkoxy group;
R1 represents a 2, 4 or 5-pyrimidine ring optionally;
R2 represents a heterocyclic bicyclic rings, having 1-4 heteroatoms selected from an oxygen atom, a sulfur atom and a nitrogen atom and having 5-9 carbon atoms, of formula
R3 represents a hydrogen atom, a C1-6 alkyl group, a hydroxy group, a C1-4 alkoxy group or a halogen atom;
R4 represents a hydrogen atom, a C1-6alkyl group, a C1-4alkoxy group or a halogen atom;
The invention relates also to a medicament comprising the said derivative or a salt thereof as an active ingredient which is used for preventive and/or therapeutic treatment of a neurodegenerative disease caused by abnormal activity of GSK3β or GSK3β and cdk5/p25, such as Alzheimer disease.
本发明涉及一种由式(I)代表的
嘧啶酮衍
生物或其盐,其中:
X 代表两个氢原子、一个
硫原子、一个氧原子或一个 C1-2 烷基和一个氢原子;
Y 代表一个键、一个
乙烯基、一个
乙炔基或一个亚甲基,可任选被一个或两个选自 C1-6 烷基、羟基或 C1-4 烷氧基的基团取代;
R1 代表 2、4 或 5-
嘧啶环,可选;
R2 代表杂环双环,具有 1-4 个杂原子,选自氧原子、
硫原子和氮原子,具有 5-9 个碳原子,其式为
R3 代表氢原子、C1-6 烷基、羟基、C1-4 烷氧基或卤素原子;
R4 代表氢原子、C1-6 烷基、C1-4 烷氧基或卤原子;
本发明还涉及一种包含上述衍
生物或其盐作为活性成分的药物,该药物用于预防和/或治疗由 GSK3β 或 GSK3β 和 cdk5/p25 活性异常引起的神经退行性疾病,如阿尔茨海默病。