3-Substituted-4-pyrimidone derivatives

Drug – bio-affecting and body treating compositions – Designated organic active ingredient containing – Heterocyclic carbon compounds containing a hetero ring...

Reexamination Certificate

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C514S247000, C514S256000, C514S228800, C514S231500, C514S235500, C544S063000, C544S098000, C544S106000, C544S111000, C544S149000, C544S224000, C544S242000, C544S295000, C544S296000

Reexamination Certificate

active

07572793

ABSTRACT:
A pyrimidone derivative represented by formula (I) or a salt thereof, or a solvate thereof or a hydrate thereof having inhibitory activity against tau protein kinase 1:wherein R1represents a C1-C12alkyl group which may be substituted;R represents, for example, a group represented by the following formula (II):wherein R2and R3independently represent a hydrogen atom or a C1-C8alkyl group;R4represents a benzene ring which may be substituted, a naphthalene ring which may be substituted, an indan ring which may be substituted, a tetrahydronaphthalene ring which may be substituted, or an optionally substituted heterocyclic ring having 1 to 4 hetero atoms selected from the group consisting of oxygen atom, sulfur atom and nitrogen atom, and having 5 to 10 ring-constituting atoms in total.

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Harvey

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