A prospective antibacterial for drug-resistant pathogens: a dual warhead amphiphile designed to track interactions and kill pathogenic bacteria by membrane damage and cellular DNA cleavage
Aryne Three-Component Coupling Involving CS<sub>2</sub> for the Synthesis of <i>S</i>-Aryl Dithiocarbamates
作者:Subrata Bhattacharjee、Shiksha Deswal、Niket Manoj、Garima Jindal、Akkattu T. Biju
DOI:10.1021/acs.orglett.1c03378
日期:2021.12.3
A facile synthesis of biologically important S-aryl dithiocarbamates has been demonstrated by the arynethree-componentcoupling involving CS2 and aliphatic amines. This transition-metal-free and mild reaction is scalable and operates with good functional group compatibility. Preliminary mechanistic experiments, including density functional theory studies, are also provided. Moreover, with 3-triflyloxybenzynes
Discovery of novel phenaleno isoquinolinium-based fluorescence imaging agents for sentinel lymph node mapping
作者:Ye Ri Han、Da-Sol Lee、Sang Bong Lee、Hui-Jeon Jeon、Sijoon Lee、Soo-Eun Sung、Chang-Hee Lee、Sung Jin Cho、Kil Soo Kim、Dong-Su Kim、Yong Hyun Jeon
DOI:10.1039/d1tb02146j
日期:——
We reported on the development of novel fluorescent agents (called Medical Fluorophores) and their usefulness for in vivo detection in the diagnosis of sentinel lymph nodes.
我们报告了一种新型荧光探针(称为医用荧光物质)的研发及其在体内检测中的用途,用于诊断前哨淋巴结。
Selective fluorescence sensing of salicylic acid using a simple pyrene appended imidazole receptor
作者:Md. Wasi Ahmad、Bo-Yeon Kim、Hong-Seok Kim
DOI:10.1039/c3nj01339a
日期:——
A simple salicylic acid selective fluorescence receptor 1 was designed by combining 1-pyrenecarboxaldehyde and 1-(3-aminopropyl)imidazole. The selective sensing of salicylic acid resulted in a significant increase in monomer emissions due to the π–π interactions between the benzene and pyrene rings. The nature of the interactions between receptor 1 and salicylic acid was investigated further by 1H NMR spectroscopy, and the energy minimised structure of the complex between receptor 1 and salicylic acid was optimised. Receptor 1 showed the highest binding constant with 5-nitrosalicylic acid (Ka = 7.18 × 104 M−1) among all the aromatic carboxylic acids tested. 5-Nitrosalicylic acid formed a complex with receptor 1 at a 1 : 1 ratio in EtOH.
A simple chemosensor (1) has been designed and synthesized. The chemosensor selectively recognizes Hg2+ ions in THF–H2O (3 : 1, v/v) by showing a significant increase in emission and a bluish color of the solution under exposure to UV light. Change of the fluorophore unit in 1 leads to 2, which also shows selective sensing of Hg2+ under similar conditions. Furthermore, while the ensemble of 1 with Hg2+ selectively senses reduced glutathione (GSH) over cysteine and homocysteine, the ensemble of 2 with Hg2+ has been observed to be inefficient to distinguish glutathione from other biothiols. Thus probe 1 and inputs Hg2+ and GSH can be used to develop an INHIBIT logic gate.