Design and Synthesis of a Series of <scp>l</scp>-<i>trans</i>-4-Substituted Prolines as Selective Antagonists for the Ionotropic Glutamate Receptors Including Functional and X-ray Crystallographic Studies of New Subtype Selective Kainic Acid Receptor Subtype 1 (GluK1) Antagonist (2<i>S</i>,4<i>R</i>)-4-(2-Carboxyphenoxy)pyrrolidine-2-carboxylic Acid
作者:Niels Krogsgaard-Larsen、Claudia G. Delgar、Karina Koch、Patricia M. G. E. Brown、Charlotte Møller、Liwei Han、Tri H. V. Huynh、Stinne W. Hansen、Birgitte Nielsen、Derek Bowie、Darryl S. Pickering、Jette Sandholm Kastrup、Karla Frydenvang、Lennart Bunch
DOI:10.1021/acs.jmedchem.6b01516
日期:2017.1.12
receptor antagonists are valuable tool compounds for studies of neurological pathways in the central nervous system. On the basis of rational ligand design, a new class of selective antagonists, represented by (2S,4R)-4-(2-carboxyphenoxy)pyrrolidine-2-carboxylic acid (1b), for cloned homomeric kainic acid receptors subtype 1 (GluK1) was attained (Ki = 4 μM). In a functional assay, 1b displayed full antagonist
离子型谷氨酸受体拮抗剂是用于研究中枢神经系统中神经通路的有价值的工具化合物。在合理的配体设计的基础上,针对(1 S)克隆的同型海藻酸受体亚型1的新型选择性拮抗剂,以(2 S,4 R)-4-(2-羧基苯氧基)吡咯烷-2-羧酸(1b)为代表达到(GluK1)(K i = 4μM)。在功能测定中,1b表现出完全的拮抗剂活性,IC 50 = 6±2μM。当结合在GluK1的配体结合结构域中时,获得1b的晶体结构。与具有谷氨酸的结构相比,可以看到13–14°的畴开放,与1b是拮抗剂。构效关系研究表明,连接吡咯烷环和苯环的束缚原子(C,O或S)的化学性质在受体选择性谱中起关键作用,并且苯环上的取代基被很好地容纳由GluK1受体。