Heterocyclic replacement of the central phenyl core of diamine-based histamine H3 receptor antagonists
作者:Devin M. Swanson、Chandra R. Shah、Brian Lord、Kirsten Morton、Lisa K. Dvorak、Curt Mazur、Richard Apodaca、Wei Xiao、Jamin D. Boggs、Mark Feinstein
DOI:10.1016/j.ejmech.2009.06.007
日期:2009.11
A series of small molecules consisting of a heterocyclic core flanked by two basic functionalities were synthesized and screened for in vitro affinity at the human histamine H-3 receptor (hH(3)R). Nine of the twenty-eight compounds tested were found to possess a hH(3)R K-i of less than 5 nM and consisted of a diverse range of central hetero-aromatic linkers (pyridine, pyrazine, oxazole, isoxazole, thiazole, furan, thiophene, and pyrrole). One member of this series, (4-isopropyl-piperazin-1-yl)-(6-piperidin-1-ylmethyl-pyridin-3-yl)-methanone (37), was found to be a high affinity, selective antagonist that crosses the blood-brain barrier and occupies H-3 receptors after oral administration in the rat. (C) 2009 Elsevier Masson SAS. All rights reserved.