The invention relates to protein binding interacting/binding compounds and methods of identifying and using them. The invention further relates to pharmaceutical compositions and methods for treating 5-HT2C and/or RSK disorders, including diseases and disorders mediated by GPCRs and/or RSKs.
A pyrimidone derivative having tau protein kinase 1 inhibitory activity which is represented by formula (I) or a salt thereof, or a solvate thereof or a hydrate thereof:
wherein Q represents CH or nitrogen atom; R represents a C1-C12 alkyl group; the ring of:
represents piperazine ring or piperidine ring.