Synthesis, pharmacology and molecular modeling of N-substituted 2-phenyl-indoles and benzimidazoles as potent GABAA agonists
摘要:
Among the known non-benzodiazepine hypnotic drugs, Zolpidem (1 a), Indiplon (2a) and Zaleplon (2b) have shown high affinity and selectivity for the a, subunit of the GABA-A receptor. Our group has performed pharmacophoric and ADMET-prediction studies to evaluate a virtual library of new molecules based on privileged structures. Among these, we have synthesized a library of N-substituted indoles and a library of N-substituted benzimidazoles. Afterwards, in vitro screening and in vivo spontaneous motor activity in mice has revealed molecules with good in vitro affinities for the a, receptor and potent in vivo induction of sedation. (c) 2006 Elsevier SAS. All rights reserved.
Mild and Highly Efficient Method for the Synthesis of 2-Arylbenzimidazoles and 2-Arylbenzothiazoles
作者:Kiumars Bahrami、M. Mehdi Khodaei、Fardin Naali
DOI:10.1021/jo8010232
日期:2008.9.1
A new, convenient method for the syntheses of 2-substituted benzimidazole and benzothizole is described. Short reaction times, large-scale synthesis, easy and quick isolation of the products, excellent chemoselectivity, and excellent yields are the main advantages of this procedure.
Synthesis of 1,2-disubstituted benzimidazoles, 2-substituted benzimidazoles and 2-substituted benzothiazoles in SDS micelles
作者:Kiumars Bahrami、Mohammad M. Khodaei、Akbar Nejati
DOI:10.1039/c000047g
日期:——
A practical and convenient synthetic method has been developed for the facile synthesis of 1,2-disubstituted benzimidazoles, 2-substituted benzimidazoles and 2-substituted benzothiazoles. The method described has the benefits of operational simplicity, excellent yields, and high chemoselectivity.
H2O2/Fe(NO3)3-Promoted Synthesis of 2-Arylbenzimidazoles and 2-Arylbenzothiazoles
作者:Kiumars Bahrami、Mohammad Khodaei、Fardin Naali
DOI:10.1055/s-0028-1087911
日期:2009.3
A new, convenient synthesis of 2-substituted benzimidazoles and benzothiazoles is described. Short reaction time, easy and quick isolation of the products, environmentally friendly procedure, excellent chemoselectivity and excellent yields are main advantages of this procedure.
A simple and efficient procedure for the synthesis of substituted benzimidazoles through a one-pot condensation of o-phenylenediamines with aryl aldehydes in the presence of H2O2/HCl system in acetonitrile at room temperature is described. Short reaction time, large-scale synthesis, easy and quick isolation of the products, and excellent yields are the main advantages of this procedure.
Transition-Metal-Free Transfer Hydrogenative Cascade Reaction of Nitroarenes with Amines/Alcohols: Redox-Economical Access to Benzimidazoles
作者:Arup K. Kabi、Raghuram Gujjarappa、Anupam Roy、Abhishek Sahoo、Dulal Musib、Nagaraju Vodnala、Virender Singh、Chandi C. Malakar
DOI:10.1021/acs.joc.1c01450
日期:2021.11.5
describes an efficient transition-metal-free process toward the transfer hydrogenative cascade reaction between nitroarenes and amines or alcohols. The developed redox-economical approach was realized using a combination of KOtBu and Et3SiH as reagents, which allows the synthesis of benzimidazole derivatives via σ-bond metathesis. The reaction conditions hold well over a wide range of substrates embedded with
该报告描述了一种有效的无过渡金属工艺,用于硝基芳烃与胺或醇之间的转移氢化级联反应。开发的氧化还原经济方法是使用 KO t Bu 和 Et 3 SiH 作为试剂的组合实现的,这允许通过 σ 键复分解合成苯并咪唑衍生物。反应条件适用于各种嵌入不同官能团的底物,以良好至优异的产率提供所需的产品。已根据一系列控制实验、质谱证据描述了机械建议,这些证据得到了具有可行能量分布的密度泛函理论 (DFT) 计算的充分支持。