a cyanation/cyclization/acylation domino sequence enabling a rapid and efficient synthesis of diversely substituted 2-aminobenzothiazole derivatives. Notably, this reaction proceeds via an original mechanism involving an intermolecular migration of the acylgroup.
Facile synthesis of N-acyl 2-aminobenzothiazoles by NHC-catalyzed direct oxidative amidation of aldehydes
作者:Sethulekshmy Premaletha、Arghya Ghosh、Sumi Joseph、Santhivardhana Reddy Yetra、Akkattu T. Biju
DOI:10.1039/c6cc08640c
日期:——
A mild, general, and high yielding synthesis of N-acyl 2-aminobenzothiazoles has been demonstrated by the N-heterocyclic carbene (NHC)-organocatalyzed direct amidation of aldehydes with 2-aminobenzothiazoles proceeding via the acyl azolium intermediates....
Synthesis, <i>in Silico</i> Study and Biological Evaluation of <i>N</i>‐(Benzothiazol/Thiazol‐2‐yl)benzamide Derivatives as Quorum Sensing Inhibitors against <i>Pseudomonas aeruginosa</i>
understanding of stability of the protein and ligand complex. Comparing N-(benzo[d]thiazol-2-yl)benzamide 3a to salicylic acid (4.40±0.10) that was utilised as standard for quorum sensing inhibitor, the anti-QS action was found greater for N-(benzo[d]thiazol-2-yl)benzamide 3a (4.67±0.45) than salicylic acid (4.40±0.10). Overall, research results suggested that N-(benzo[d]thiazol-2-yl)benzamide/N-(thiazol-2-yl)benzamide
细菌对化学疗法产生耐药性对治疗细菌感染的功效构成严重危险。抗菌药物耐药性的关键因素之一是生物膜中细菌的生长。通过开发新型抗生物膜药物,群体感应(QS)抑制作为一种替代治疗方法而诞生。QS 抑制作用是针对 QS 信号通路的,从而阻碍细胞间的通讯。这项工作的目标是开发通过降低 QS 并充当抗生物膜剂来有效对抗铜绿假单胞菌的新药物。在本研究中,设计并以良好的产率合成了N- (苯并[ d ]噻唑-2-基)苯甲酰胺/ N- (噻唑-2-基)苯甲酰胺衍生物3a-h 。此外,分子对接分析显示,结合亲和力值为-11.2至-7.6 kcal/mol,中等至良好。通过计算机模拟方法研究了这些制备的化合物的物理化学性质。分子动力学模拟也用于更好地了解蛋白质和配体复合物的稳定性。将N -(苯并[ d ]噻唑-2-基)苯甲酰胺3a与用作群体感应抑制剂标准品的水杨酸 (4.40±0.10)进行比较,发现N -(苯并[
Design, Synthesis and Evaluation of New Multifunctional Benzothiazoles as Photoprotective, Antioxidant and Antiproliferative Agents
multifunctional compounds, capable of interacting with multiple biological targets, thus simplifying multidrug therapies and improving patient compliance. The aim of this work was to synthesize new multifunctional chemical entities bearing a benzothiazole nucleus, a structure that has attracted increasing interest for the great variety of biological actions that it can perform, and already used as a scaffold
Access to Amide from Aldimine via Aerobic Oxidative Carbene Catalysis and LiCl as Cooperative Lewis Acid
作者:Guanjie Wang、Zhenqian Fu、Wei Huang
DOI:10.1021/acs.orglett.7b01195
日期:2017.7.7
Herein, an efficient route to amides from aldimines via aza-Breslow intermediates through aerobic oxidative carbenecatalysis with LiCl as a cooperative Lewis acid is described. Many of the obtained N-heteroarylamides feature biological activity. Ambient air was used as the sole oxidant and source of oxygen in this catalytically oxidative amidation. This method allows for a broad substrate scope and