Structure−Activity Studies on a Series of a 2-Aminopyrimidine-Containing Histamine H4 Receptor Ligands
摘要:
A series of 2-aminopyrimidines was synthesized as ligands of the histamine H-4 receptor (H4R). Working in part from a pyrimidine hit that was identified in an HTS campaign, SAR studies were carried out to optimize the potency, which led to compound 3,4-tert-butyl-6-(4-methylpiperazin-1-yl)pyrimidin-2-ylamine. We further studied this compound by systematically modifying the core pyrimidine moiety, the methylpiperazine at position 4, the NH2 at position 2, and positions 5 and 6 of the pyrimidine ring. The pyrimidine 6 position benefited the most from this optimization, especially in analogs in which the 6-tert-butyl was replaced with aromatic and secondary amine moieties. The highlight of the optimization campaign was compound 4, 4-[2-amino-6-(4-methylpiperazin-1-yl)pyrimidin-4-yl]benzonitrile, which was potent in vitro and was active as an anti-inflammatory agent in an animal model and had antinociceptive activity in a pain model, which supports the potential of H4R antagonists in pain.
Compounds of formula (I): inhibit microtubule affinity regulating kinase (MARK) and therefore find use in treatment of neurodegenerative diseases associated with hyperphosphorylation of tau.
[EN] AMINOTHIAZOLE DERIVATIVES AS INHIBITORS OF MARK<br/>[FR] DÉRIVÉS D'AMINOTHIAZOLE EN TANT QU'INHIBITEURS DE MARK
申请人:MERCK SHARP & DOHME
公开号:WO2007141571A2
公开(公告)日:2007-12-13
[EN] Compounds of formula (I): inhibit microtubule affinity regulating kinase (MARK) and therefore find use in treatment of neurodegenerative diseases associated with hyperphosphorylation of tau. [FR] L'invention concerne des composés de formule (I) inhibant la kinase de régulation de l'affinité au microtubule (MARK) et qui, par conséquent, trouvent une utilisation dans le traitement de maladies neurodégénératives associées à l'hyperphosphorylation de tau.