Refinement and Evaluation of a Pharmacophore Model for Flavone Derivatives Binding to the Benzodiazepine Site of the GABA<sub>A</sub> Receptor
作者:Pia Kahnberg、Erik Lager、Celia Rosenberg、Jette Schougaard、Linda Camet、Olov Sterner、Elsebet Østergaard Nielsen、Mogens Nielsen、Tommy Liljefors
DOI:10.1021/jm020839k
日期:2002.9.1
develop and evaluate a pharmacophore model previously proposed by Cook and co-workers (Drug Des. Discovery 1995, 12, 193-248) for ligands binding to the benzodiazepine site of the GABA(A) receptor, 40 new flavone derivatives have been synthesized and their affinities for the benzodiazepine site have been determined. Two new regions of steric repulsive interactions between ligand and receptor have been
为了进一步开发和评估以前由Cook和他的同事提出的药效团模型(Drug Des.Discovery 1995,12,193-248),其用于与GABA(A)受体的苯二氮杂位点结合的配体,已经开发了40种新的黄酮衍生物。已经确定了它们的合成及其对苯并二氮杂site位点的亲和力。表征了配体和受体之间的两个空间排斥相互作用的新区域,并且已绘制出6-和3'-取代基附近的受体区域。显示了2'-羟基取代使亲和力显着增加,这是根据与先前提出的氢键接受位点A2的新型氢键相互作用来解释的。根据这些研究的结果和改进的药效团模型,5'-溴-2'-羟基-6-甲基黄酮,成功设计了迄今为止报道的最高亲和力的黄酮衍生物(K(i)= 0.9 nM)。已经比较了药效团模型与最近提出的替代模型(Marder;等人,Bioorg。Med。Chem。,2001,9,323-335)。