Substituted 2-(diaza-bicyclo-alkyl)-pyrimidone derivatives

Drug – bio-affecting and body treating compositions – Designated organic active ingredient containing – Having -c- – wherein x is chalcogen – bonded directly to...

Reexamination Certificate

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Details

C544S320000

Reexamination Certificate

active

11219923

ABSTRACT:
The invention relates to a 2-(diaza-bicyclo-alkyl)-pyrimidone derivative represented by formula (I):wherein:R1 represents a hydrogen atom, a C1-6alkyl group or a halogen atom; R2 represents a hydrogen atom, a C1-6alkyl group optionally substituted by 1 to 4 substituents selected from a halogen atom, a hydroxyl group, a C1-4alkoxy group; a C1-2perhalogenated alkyl group, a benzyl group, a phenethyl group, a benzyloxycarbonyl group, a C1-4alkoxy carbonyl group, a benzene ring, a naphthalene ring, a quinoline ring, a phthalazine ring, a 5,6,7,8-tetrahydronaphthalene ring, a pyridine ring, an indole ring, a pyrrole ring, a thiophene ring, a benzenesulfonyl group, a benzoyl group, a pyridazine ring, a furan ring and an imidazole ring; each of the benzyl group, the phenethyl group, the benzyloxycarbonyl group, the benzenesulfonyl group, the benzoyl group and the benzene, naphthalene, quinoline, phthalazine, 5,6,7,8-tetrehydronaphthalene, pyridine, indole, pyrrole and thiophene rings being optionally substituted by 1 to 4 substituents selected from a C1-6alkyl group, a benzene ring, a halogen atom, a C1-2perhalogenated alkyl group, a C1-3halogenated alkyl group, a hydroxyl group, a C1-4alkoxy group, a nitro group, a cyano group, an amino group, a C1-6monoalkylamino group and a C2-10dialkylamino group; R3 represents a 2, 4 or 5-pyrimidine ring or a 2, 3 or 4-pyridine ring, the rings being optionally substituted by a C1-4alkyl group, C1-4alkoxy group or a halogen atom; R4 represents a C1-4alkyl group optionally substituted by a hydroxyl group, a C1-4alkoxy group or a halogen atom and n represents 1 or 2; or a salt thereof, or a solvate thereof or a hydrate thereof. 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.

REFERENCES:
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