Substituted Indole-2-carboxylates as <i>in Vivo</i> Potent Antagonists Acting as the Strychnine-Insensitive Glycine Binding Site
作者:Romano Di Fabio、Anna M. Capelli、Nadia Conti、Alfredo Cugola、Daniele Donati、Aldo Feriani、Paola Gastaldi、Giovanni Gaviraghi、Cheryl T. Hewkin、Fabrizio Micheli、Andrea Missio、Manolo Mugnaini、Angelo Pecunioso、Anna M. Quaglia、Emiliangelo Ratti、Luciana Rossi、Giovanna Tedesco、David G. Trist、Angelo Reggiani
DOI:10.1021/jm960644a
日期:1997.3.1
strychnine-insensitive glycine binding site (noncompetitive inhibition of the binding of [3H]TCP, pA2 = 8.1) displaying nanomolar affinity for the glycine binding site (pKi = 8.5), coupled with high glutamate receptor selectivity (> 1000-fold relative to the affinity at the NMDA, AMPA, and kainate binding sites). This indole derivative inhibited convulsions induced by NMDA in mice, when administered by both
合成了一系列在吲哚核的C-3位置带有合适链的吲哚-2-羧酸盐,并使用[3H]甘氨酸结合测定对体外亲和力进行了评估,并通过抑制N-诱导的惊厥来对体内效力进行了评估。小鼠中的D-天冬氨酸甲酯(NMDA)。3- [2-[((苯基氨基)羰基]乙烯基] -4,6-二氯吲哚-2-羧酸(8)是对苯丙氨酸不敏感的甘氨酸结合位点的拮抗剂(对[3H] TCP的结合进行非竞争性抑制,pA2 = 8.1),显示出对甘氨酸结合位点的纳摩尔亲和力(pKi = 8.5),并具有高谷氨酸受体选择性(相对于NMDA,AMPA和海藻酸酯结合位点的亲和力> 1000倍)。当通过静脉和口服途径给药时(ED50 = 0.06和6 mg / kg,分别)。研究了取代基对C-3侧链的末端苯环的影响。QSAR分析表明,pKi值随亲脂性和取代基的空间体积而降低,并随存在于末端苯环对位的基团的电子供体共振效应而增加。根据这些结果,C-3侧链