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 allostericmodulator (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 (+)
Mechanochemical Synthesis of Substituted 4H-3,1-Benzoxazin-4-ones, 2-Aminobenzoxazin-4-ones, and 2-Amino-4H-3,1-benzothiazin-4-ones Mediated by 2,4,6-Trichloro-1,3,5-triazine and Triphenylphosphine
A mild and convenient approach for the synthesis of 2-substituted 4H-3,1-benzoxazin-4-ones, 2-aminobenzoxazin-4-ones, and 2-amino-4H-3,1-benzothiazin-4-ones under solvent-assisted grinding is reported. In the presence of 2,4,6-trichloro-1,3,5-triazine and catalytic triphenylphosphine, cyclodehydration of N-substituted anthranilic acid derivatives proceeded rapidly within minutes at room temperature
The present invention relates to antibacterial agents that are useful for sterilization, sanitation, antisepsis, and disinfection
本发明涉及用于杀菌、卫生、消毒和消毒的抗菌剂。
Production of 3- benzoyl-2,1-benzisoxazoles,2-phenyl-4H-3,1-benzoxazin-4-ones, and novel quinolinone derivatives from 2-phenylquinolin-4(1H)-ones and sodium dichloroisocyanurate
作者:Benjamin Staskun、Theodorus van Es
DOI:10.1039/p19930000511
日期:——
A simple synthesis of certain 3-benzoyl-2,1 -benzisoxazoles 6 is accomplished via treatment of the corresponding 2-phenylquinolin-4(1H)-one 1 with sodium dichloroisocyanurate 2 in methanolic aq. alkali; the isomeric 2-phenyl-4H-3,1-benzoxazin-4-one 7 is also a product. Under different conditions the same reactants furnish two new types of quinolinone derivative, viz. 3,3-dichloro-2-phenylquinolin-4(3H)-one 4 and 2-alkoxy-3,3-dichloro-2,3-dihydro-2-phenylquinolin-4(1H)-one 5, as chief products; the former is an intermediate in the synthesis of products 6 and 7. Some of the chemical properties of the dichloro compounds 4 and 5 are described. Mechanistic pathways and proposals to explain the results and observations are presented.
Nucleophilic Ring-Opening of Benzoxazinones by DBU: Some Observations
作者:Sachin B. Baravkar、Arup Roy、Rupesh L. Gawade、Vedavati G. Puranik、Gangadhar J. Sanjayan