From Methaqualone and Beyond: Structure–Activity Relationship of 6-, 7-, and 8-Substituted 2,3-Diphenyl-quinazolin-4(3<i>H</i>)-ones and in Silico Prediction of Putative Binding Modes of Quinazolin-4(3<i>H</i>)-ones as Positive Allosteric Modulators of GABA<sub>A</sub> Receptors
作者:Peng-Fei Wang、Anders A. Jensen、Lennart Bunch
DOI:10.1021/acschemneuro.0c00600
日期:2020.12.16
Methaqualone (2-methyl-3-(o-tolyl)-quinazolin-4(3H)-one, MTQ) is a moderately potent positive allosteric modulator (PAM) of GABAA receptors (GABAARs). In a previous structure–activity relationship (SAR) study probing the importance of 2- and 3-substituents in the quinazolin-4(3H)-one scaffold, several potent GABAAR PAMs were identified, including 2,3-diphenylquinazolin-4(3H)-one (PPQ) and 3-(2-chl
甲基苯二甲酮(2-甲基-3-(邻甲苯基)-喹唑啉-4(3 H)-one,MTQ)是GABA A受体(GABA A Rs)的中度有效正变构调节剂(PAM )。在先前的结构-活性关系(SAR)研究中,研究了喹唑啉-4(3 H)-一个支架中2-和3-取代基的重要性,确定了几种有效的GABA A R PAM,包括2,3-二苯基喹唑啉- 4(3 H)-1(PPQ)和3-(2-氯苯基)-2-苯基喹唑啉-4(3 H)-1(Cl-PPQ)。在这里,PPQ被用作喹唑啉4(3 H中的6、7和8个取代基的SAR研究的先导)-通过合成和功能表征36种不同GABA A R亚型的PPQ类似物。尽管没有一个新的类似物比PPQ具有更强的效力或在测试的GABA A Rs上显示出明显的亚型选择性,但从这项研究中提取了一些有趣的SAR观察结果。在一个在硅片的研究中,在跨膜MTQ,PPQ,和Cl-PPQ的推定的结合模式β 2 (+)