Discovery and Characterization of 6-{4-[3-(<i>R</i>)-2-Methylpyrrolidin-1-yl)propoxy]phenyl}-2<i>H</i>-pyridazin-3-one (CEP-26401, Irdabisant): A Potent, Selective Histamine H<sub>3</sub> Receptor Inverse Agonist
作者:Robert L. Hudkins、Rita Raddatz、Ming Tao、Joanne R. Mathiasen、Lisa D. Aimone、Nadine C. Becknell、Catherine P. Prouty、Lars J. S. Knutsen、Mehran Yazdanian、Gilbert Moachon、Mark A. Ator、John P. Mallamo、Michael J. Marino、Edward R. Bacon、Michael Williams
DOI:10.1021/jm200401v
日期:2011.7.14
pyridazin-3-one histamine H3 receptor (H3R) antagonists/inverse agonists identified 6-4-[3-(R)-2-methylpyrrolidin-1-yl)propoxy]phenyl}-2H-pyridazin-3-one (8a, CEP-26401; irdabisant) as a lead candidate for potential use in the treatment of attentional and cognitive disorders. 8a had high affinity for both human (Ki = 2.0 nM) and rat (Ki = 7.2 nM) H3Rs with greater than 1000-fold selectivity over the hH1R
新型哒嗪-3-一组胺H 3受体(H 3 R)拮抗剂/反向激动剂的优化确定了6- 4- [3-(R)-2-甲基吡咯烷-1-基)丙氧基]苯基}- 2 H-哒嗪-3-酮(8a,CEP-26401; irdabisant)作为潜在候选药物可用于治疗注意力和认知障碍。8a对人(K i = 2.0 nM)和大鼠(K i = 7.2 nM)H 3 Rs具有高亲和力,在hH 1 R,hH 2 R和hH 4上的选择性大于1000倍R组胺受体亚型,在418 G蛋白偶联受体,离子通道,转运蛋白和酶的体外实验中。图8a证明了CNS药物在水溶性,渗透性和亲脂性方面的理想药物特性,并且与人血浆蛋白的结合性低。它微弱地抑制了重组细胞色素P450亚型和与人类醚相关的基因。大鼠,小鼠,狗和人肝微粒体中的8a代谢极少,并且具有良好的种间药代动力学特性。图8a在大鼠中剂量依赖性地抑制了H 3 R激动剂诱导的成遗传(ED 50=