A pyrimidone derivative represented by formula (I) or a salt thereof:
1
Wherein:
R1 represents a hydrogen atom or a C
1-6
alkyl group which may be substituted by a C
6,10
aryl group;
R2 represents a C
1-10
alkyl group which may be substituted, a C
2-6
alkenyl group which may be substituted, a C
3-6
alkynyl group which may be substituted, a C
3-6
cycloalkyl group which may be substituted, or a C
6-10
ARYL group which may be substituted;
or R1 and R2 form together a C
2-6
alkylene group which may be substituted;
or R1 and R2 form together a chain of formula —(CH
2
)
2
—X—(CH
2
)
2
— or
—(CH
2
)
2
—X—(CH
2
)
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 C
1-4
alkyl group, C
1-4
alkoxy group or halogen atom; and
R4 represents a C
1-10
alkyl group optionally substituted by a hydroxyl group, amino, C
1-6
monoalkylamino group, C
2-12
dialkylamino group or C
6,10
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 GSK3&bgr; such as Alzheimer's disease.
一种由
化学式(I)表示的
吡啶酮衍
生物或其盐:
其中:
R1代表氢原子或者可能被C6,10芳基取代的C1-6烷基基团;
R2代表可能被取代的C1-10烷基基团,可能被取代的C2-6烯基基团,可能被取代的C3-6炔基基团,可能被取代的C3-6环烷基基团,或者可能被取代的C6-10芳基基团;
或者R1和R2一起形成可能被取代的C2-6烷基基团;
或者R1和R2一起形成
化学式—(
CH2)2—X—( )2—或—( )2—X—( )3—的链,其中X代表可能被取代的氧原子、
硫原子或氮原子;
R3代表可能被C1-4烷基基团、C1-4烷氧基团或卤原子取代的2,3或4-
吡啶基团;以及
R4代表可能被羟基、
氨基、C1-6单烷基
氨基基团、C2-12二烷基
氨基基团或可能被取代的C6,10芳基基团取代的C1-10烷基基团。
以及一种包含上述衍
生物或其盐作为活性成分的药物,用于预防和/或治疗由GSK3β异常活性引起的神经退行性疾病,如阿尔茨海默病。