A pyrimidone derivative represented by formula (I) or a salt thereof:
Wherein :
R1 represents a hydrogen atom or a C1-6 alkyl group;
R2 represents a C1-6 alkyl group which may be substituted, a C2-6 alkenyl group which may be substituted, a C3-6 alkynyl group which may be substituted, a C3-6 cycloalkyl group which may be substituted, or a C6-10 ARYL group which may be substituted;
or R1 and R2 form together a C2-6 alkylene group which may be substituted;
or R1 and R2 form together a chain of formula -(CH2)2-X-(CH2)2- or
-(CH2)2 -X-(CH2)3- where X represents a oxygen atom, a sulfur atom, or a nitrogen atom which may be substituted;
R3 represents a 2, 3 or 4-pyridyl group optionally substituted by a C1-4 alkyl group, C1-4 alkoxy group or a halogen atom; and
R4 represents a C1-6 alkyl group optionally substituted by a C6,10 aryl group which may be substituted.
And 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 such as Alzheimer's disease, Parkinson's disease, frontoparietal dementia, corticobasal degeneration, Pick's disease, cerebrovascular accidents, brain and spinal trauma, and peripheral neuropathies.
式 (I) 所代表的
嘧啶酮衍
生物或其盐:
其中:
R1 代表氢原子或 C1-6 烷基;
R2 代表可被取代的 C1-6 烷基、可被取代的 C2-6 烯基、可被取代的 C3-6 烷基、可被取代的 C3-6 环烷基或可被取代的 C6-10 芳烷基;
或 R1 和 R2 共同组成一个可被取代的 C2-6 烯基;
或 R1 和 R2 共同形成一条式-(
CH2)2-X-( )2- 或-( )2-X-( )2- 的链
-其中 X 代表氧原子、
硫原子或可能被取代的氮原子;
R3 代表可被 C1-4 烷基、C1-4 烷氧基或卤素原子取代的 2、3 或 4
吡啶基;以及
R4 代表可被 C6,10 芳基取代的 C1-6 烷基。
一种包含上述衍
生物或其盐作为活性成分的药物,用于预防和/或治疗由 GSK3β 活性异常引起的神经退行性疾病,如阿尔茨海默病、帕
金森病、额叶痴呆、皮质基底变性、皮克氏病、脑血管意外、脑和脊柱创伤以及周围神经病。