Synthesis and Structure-Activity Relationships of Substituted 1,4-Dihydroquinoxaline-2,3-diones: Antagonists of N-Methyl-D-aspartate (NMDA) Receptor Glycine Sites and Non-NMDA Glutamate Receptors
作者:John F. W. Keana、Sunil M. Kher、Sui Xiong Cai、Christian M. Dinsmore、Anne G. Glenn、J. Guastella、Jin-Cheng Huang、Victor Ilyin、Yixin Lu
DOI:10.1021/jm00022a003
日期:1995.10
and 7 positions, displayed high potency (Kb approximately 6-8 nM) at the glycine site, moderate potency at non-NMDA receptors (Kb = 0.9-1.5 microM), and the highest (120-250-fold) selectivity in favor of glycine site antagonism over non-NMDA receptors. Tetrasubstituted QXs 17d,e were more than 100-fold weaker glycine site antagonists than the corresponding trisubstituted QXs with F being better tolerated
合成了一系列的单,二,三和四取代的1,4-二氢喹喔啉-2,3-二酮(QXs),并在N-甲基-D-天冬氨酸(NMDA)/甘氨酸位点和α位作为拮抗剂进行了评估-氨基-3-羟基-5-甲基异恶唑-4-丙酸优先的非NMDA受体。通过电测定在表达大鼠全脑poly(A)+ RNA的非洲爪蟾卵母细胞中测量拮抗剂的效力。三取代QX 17a(ACEA 1021),17b(ACEA 1031),24a和27,在5位含硝基,在6和7位含卤素,在甘氨酸上显示出高效价(Kb约为6-8 nM)位点,对非NMDA受体的药效中等(Kb = 0.9-1.5 microM),与非NMDA受体相比,甘氨酸位点拮抗作用的选择性最高(120-250倍)。四取代的QX 17d e是比相应的三取代QX弱100倍的弱甘氨酸位点拮抗剂,在8位上F作为取代基比Cl具有更好的耐受性。与三取代类似物相比,二取代和单取代的QX显示出越来越弱的拮抗作