Synthesis of 2-Thio-Substituted Benzothiazoles via a Domino Condensation/<i>S</i>-Arylation/Heterocyclization Process
作者:Liu Shi、Xiangqian Liu、Hui Zhang、Yongwen Jiang、Dawei Ma
DOI:10.1021/jo200535e
日期:2011.5.20
Condensation of carbon disulfide with thiols in the presence of K2CO3 generates carbonotrithioate salts in situ, which undergo coupling with 2-iodoanilines and subsequent intramolecular condensation and elimination under assistance of CuBr to afford 2-thio-substituted benzothiazoles. Both aliphatic and aromatic thiols are compatible with this process, delivering the corresponding heterocycles with
在K 2 CO 3存在下,二硫化碳与硫醇的缩合原位生成三硫代碳酸盐,将其与2-碘苯胺偶联,随后在CuBr的帮助下进行分子内缩合和消除,得到2-硫基取代的苯并噻唑。脂族和芳族硫醇均与该过程相容,从而提供具有良好多样性的相应杂环。
Synthesis and Biological Evaluation of 2-Mercapto-1,3-benzothiazole Derivatives with Potential Antimicrobial Activity
作者:Carlo Franchini、Marilena Muraglia、Filomena Corbo、Marco Antonio Florio、Antonia Di Mola、Antonio Rosato、Rosanna Matucci、Marta Nesi、Francoise van Bambeke、Cesare Vitali
DOI:10.1002/ardp.200900092
日期:2009.10
underway worldwide to develop new antimicrobial agents. To identify compounds with a potent antimicrobial profile, we designed and synthesized low molecular weight 2‐mercaptobenzothiazole derivatives 2a–2l and 3a–3l. Both series were screened for in‐vitro antibacterial activity against the representative panel of Gram‐positive and Gram‐negative bacteria strains. The biological screening identified compounds
病原体对当前可用抗生素的细菌耐药性的增强构成了严重的公共健康威胁。因此,全世界都在大力开发新的抗菌剂。为了鉴定具有有效抗菌特性的化合物,我们设计并合成了低分子量 2-巯基苯并噻唑衍生物 2a-2l 和 3a-3l。两个系列都针对革兰氏阳性和革兰氏阴性细菌菌株的代表性小组进行了体外抗菌活性筛选。生物筛选确定化合物 2e 和 2l 是最活跃的化合物,显示出令人感兴趣的抗菌活性,对金黄色葡萄球菌的 MIC 值分别为 3.12 μg/mL,对大肠杆菌的 MIC 值分别为 25 μg/mL。用 S-Bn 部分取代 S-H 导致 3a-3l 系列的抗菌作用显着丧失。还通过测试化合物 2e 和 2l 对一些具有不同抗菌素耐药性的临床分离株的活性来研究它们的抗生素作用。此外,还评估了 NorA 外排泵对我们分子抗菌活性的影响。最后,在本文中,我们还通过 MTS 测定描述了最有趣的化合物对 HeLa 和 MRC-5