Design, synthesis, and subtype selectivity of 3,6-disubstituted β-carbolines at Bz/GABA(A)ergic receptors. SAR and studies directed toward agents for treatment of alcohol abuse
作者:Wenyuan Yin、Samarpan Majumder、Terry Clayton、Steven Petrou、Michael L. VanLinn、Ojas A. Namjoshi、Chunrong Ma、Brett A. Cromer、Bryan L. Roth、Donna M. Platt、James M. Cook
DOI:10.1016/j.bmc.2010.08.049
日期:2010.11
substituents located at position-3 of the β-carboline nucleus exhibited a conserved stereo interaction in lipophilic pocket L1, while N(2) presumably underwent a hydrogen bonding interaction with H1. Three novel β-carboline ligands (βCCt, 3PBC and WYS8), which preferentially bound to α1 BzR subtypes permitted a comparison of the pharmacological efficacies with a range of classical BzR antagonists (flumazenil
合成了一系列 3,6-二取代的 β-咔啉,并通过放射性配体结合测定评估了它们对 α x β 3 γ 2 GABA A /苯二氮卓受体亚型的体外亲和力,以寻找治疗酒精滥用的α 1亚型选择性配体。通过 CDI 介导的过程合成了β-咔啉-3-羧酸酯-叔丁酯 (βCCt, 1 ) 的类似物,并通过CDI 介导的过程合成了相关的 6-取代 β-咔啉-3-羧酸酯6包括 WYS8 ( 7 ) Sonogashira 或 Stille 的 6-iodo-βCCt 偶联过程 ( 5 )。βCCt 的二价配体(32和33)也是通过钯催化的自偶联过程设计和制备的,以将构效关系(SAR)扩展到更大的配体。基于药效团/受体模型,对 34 种类似物进行的初步 SAR 研究表明,β-咔啉 6 位的大取代基具有良好的耐受性。正如所预期的,这些基团被提议投射到GABA A /Bz受体的胞外结构域(L Di区域)中(参见32