Hydroxy-1,2,5-oxadiazolyl Moiety as Bioisoster of the Carboxy Function. Synthesis, Ionization Constants, and Pharmacological Characterization of γ-Aminobutyric Acid (GABA) Related Compounds
作者:Marco L. Lolli、Suzanne L. Hansen、Barbara Rolando、Birgitte Nielsen、Petrine Wellendorph、Karsten Madsen、Orla Miller Larsen、Uffe Kristiansen、Roberta Fruttero、Alberto Gasco、Tommy N. Johansen
DOI:10.1021/jm051288b
日期:2006.7.1
Three 4-substituted 1,2,5-oxadiazol-3-ols containing aminoalkyl substituents (analogues and homologues of gamma-aminobutyric acid (GABA)) were synthesized to investigate the hydroxy-1,2,5-oxadiazolyl moiety as a bioisoster for a carboxyl group at GABA receptors. The pK(a) values of the target compounds were close to those of GABA. At GABA(A) receptors of cultured cerebral cortical neurons, weak agonist
合成了三个含有氨基烷基取代基的4-取代的1,2,5-恶二唑-3-醇(γ-氨基丁酸(GABA)的类似物和同系物),以研究羟基1,2,5-恶二唑基部分是GABA受体上的羧基。目标化合物的pK(a)值接近GABA。在培养的大脑皮层神经元的GABA(A)受体上,鉴定出弱激动剂和部分激动剂谱,表明4-羟基-1,2,5-恶二唑-3-基单元是非经典的羧基生物等排体。