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.
[EN] A METHOD FOR PAIN TREATMENT<br/>[FR] PROCÉDÉ POUR LE TRAITEMENT DE LA DOULEUR
申请人:ABBOTT LAB
公开号:WO2008060766A2
公开(公告)日:2008-05-22
[EN] This invention discloses a method of treating pain by administering histamine H4 receptor ligands and compositions comprising the same. [FR] L'invention concerne un procédé de traitement de la douleur par l'administration de ligands de récepteur de l'histamine H4, et des compositions comportant ceux-ci.