名称:
1,4-Dihydro-2,3-quinoxalinediones as potential flavin metabolites and excitatory amino acid receptor ligands. Part 1: Synthesis and pharmacological evaluation of the benzylic oxidation series of 1,4-dihydro-6,7-dimethyl-2,3-quinoxalinedione
摘要:
A series of five 6,7-disubstituted 1,4-dihydro-2,3-quinoxalinediones was prepared, two of which are known microbial flavin metabolites and three of which are potential flavin metabolites. Four of the five compounds inhibited specific binding of [H-3]-amino-3-hydroxy-5-methyl-4-isoxazolepropanoic acid ([H-3]AMPA), [H-3]kainic acid, and [H-3]6-cyano-1,4-dihydro-7-nitro-2,3-quinoxalinedione ([H-3]CNQX) in rat brain homogenate fractions, with IC50 values in the low micromolar range (the fifth compound competed only with [H-3]CNQX). Two of the compounds were moderately potent AMPA antagonists in an in vitro functional test. (C) 1998 Elsevier Science Ltd. All rights reserved.