Revisiting the Quinoxalinedione Scaffold in the Construction of New Ligands for the Ionotropic Glutamate Receptors
作者:Charles S. Demmer、David Rombach、Na Liu、Birgitte Nielsen、Darryl S. Pickering、Lennart Bunch
DOI:10.1021/acschemneuro.7b00243
日期:2017.11.15
among the AMPA, NMDA, and KA receptors, and to some extent also obtain full receptor subtype selectivity. Highlights of the study of 44 new analogues are compound 2m being a high affinity ligand for native AMPA receptors (IC50= 0.48 μM), analogues 2e,f,h,k,v all displayed selectivity for native NMDA receptors, and compounds 2s,t,u are selective ligand for the GluK1 receptor. Most interestingly, compound
二十多年前,喹喔啉二酮支架被证明是α-氨基酸的生物等排体。经过广泛的结构-活性关系(SAR)研究,在离子型谷氨酸受体领域确定了拮抗剂DNQX,CNQX和NBQX。在这项工作中,我们将重新研究喹喔啉二酮支架,并探索在6位上引入酸官能团的方法。SAR研究表明,通过这种策略,可以调节AMPA,NMDA和KA受体之间的iGluR选择性,并且在某种程度上还可以获得完全的受体亚型选择性。研究44个新类似物的重点是化合物2m是天然AMPA受体的高亲和力配体(IC 50 = 0.48μM),类似物2e,f,h,k,v均显示出对天然NMDA受体的选择性,化合物2s,t,u是GluK1受体的选择性配体。最有趣的是,化合物2w被证明是GluK3优先配体,对天然AMPA,KA和NMDA受体具有完全选择性。