The invention relates to a pyrimidone derivative represented by formula (I) or a salts thereof:
wherein:
n is 0 or 1,
W represents a bond, a carbonyl group -C(O)- or a a sulfonyl group -S(O)2-;
* When W represents a carbonyl group -C(O)- then R1 represents a hydrogen atom, a C1-6 alkyl group which may be substituted, a C6,10 aryl group which may be substituted or a heterocyclic ring having 1-4 hetero atoms selected from oxygen atom, sulfur atom, and nitrogen atom, having total ring-constituting atoms of 5-10 and being optionally substituted,
* When W represents a sulfonyl group -S(O)2-, R1 represents a C1-6 alkyl group which may be substituted, a C6,10 aryl group which may be substituted or a heterocyclic ring having 1-4 hetero atoms selected from oxygen atom, sulfur atom, and nitrogen atom, having total ring-constituting atoms of 5-10 and being optionally substituted;
* When W represents a bond then n is 0 and R1 represents a hydrogen atom or a C1-6 alkyl group,
R2 represents a hydrogen atom or a C1-6 alkyl group which may be substituted by an optionally substituted phenyl group; and
R3 represents a pyridyl ring optionally substituted by a C1-4 alkyl group, C1-4 alkoxy 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, such as Alzheimer's disease, Parkinson's disease, frontoparietal dementia, corticobasal degeneration, Pick's disease, cerebrovascular accidents, brain and spinal trauma, and peripheral neuropathies.
该发明涉及一种由式(I)表示的
嘧啶酮衍
生物或其盐:其中:n为0或1,W代表键合,羰基-C(O)-或磺酰基-S(O)2-;* 当W代表羰基-C(O)-时,R1表示氢原子,可能被取代的C1-6烷基,可能被取代的C6,10芳基或具有1-4个异原子(氧原子、
硫原子和氮原子)的杂环环,总环构成原子数为5-10且可选地取代;* 当W代表磺酰基-S(O)2-时,R1表示可能被取代的C1-6烷基,可能被取代的C6,10芳基或具有1-4个异原子(氧原子、
硫原子和氮原子)的杂环环,总环构成原子数为5-10且可选地取代;* 当W代表键合时,n为0且R1表示氢原子或C1-6烷基,R2表示氢原子或可能被可选取代的苯基取代的C1-6烷基;R3表示可能被C1-4烷基,C1-4烷氧基或卤原子取代的
吡啶环。该发明还涉及一种包含所述衍
生物或其盐作为活性成分的药物,用于预防和/或治疗由GSK3β异常活性引起的神经退行性疾病,如阿尔茨海默病、帕
金森病、额顶痴呆、皮克病、脑血管意外、脑脊髓创伤和周围神经病变。