Design, synthesis of new magenta dyestuffs based on thiazole azomethine disperse reactive dyes with antibacterial potential on both dyes and gamma-irradiated dyed fabric
作者:Seham A. Ibrahim、Hala F. Rizk、Dina S. Aboul-Magd、Ahmed Ragab
DOI:10.1016/j.dyepig.2021.109504
日期:2021.9
high ultraviolet protection. The advantage of synthesizing these dyes is quite facile, and scale-up is feasible, preferring industrial dyeing applications. The designedthiazole azomethine dyes exhibited broad-spectrum antibacterial agents against MDR Gram-positive and Gram-negative bacterial isolates, which will facilitate their rational usage in multiple therapeutic applications. Our findings also demonstrate
合成了一系列新型洋红色偶氮甲碱活性分散染料并应用于涤棉混纺织物。各种光谱和分析技术表征了所有合成的染料。所有合成分子的所得数据和理论值与所提出的分子结构非常吻合。这些染料已证明它们在染色混纺织物方面的效率,因为它们在牢度特性、比色数据和吸尽、固色研究方面都取得了令人满意的结果。此外,染色织物进行了紫外线防护系数测试,并提供了高紫外线防护。合成这些染料的优点是非常容易,并且规模化是可行的,更适合工业染色应用。设计的噻唑偶氮甲碱染料对 MDR 革兰氏阳性和革兰氏阴性细菌分离株具有广谱抗菌作用,这将有助于它们在多种治疗应用中的合理使用。我们的研究结果还证明了使用伽马辐射对染色织物进行消毒的可能性以及辐射增强其抗菌活性的能力,从而抑制纺织品表面的任何细菌生长。分子对接研究表明,染料与 DNA 促旋酶的活性位点 (2XCT) 之间具有良好的结合作为首选模式。我们的研究结果还证明了使用伽马辐射对染色织
Active esters for solid phase peptide synthesis
申请人:PerSeptive Biosystems, Inc.
公开号:EP0401797A1
公开(公告)日:1990-12-12
Derivatives of 1-phenyl pyrazolin-5-one have many applications for biomolecule synthesis. Enol esters of protected amino acids made by the present process provide efficient coupling in solid-phase peptide synthesis. The 1-phenyl-pyrazolin-5-one derivatives are highly crystalline, stable, non-toxic and easy to prepare. Many possess self-indicating properties, facilitating spectrophotometric monitoring and automation of peptide synthesis.
An efficient and convenient method for the bromination of pyrazolones and 5-hydroxypyrazoles was developed by using N-bromobenzamide in THF at room temperature. This new method provided di-bromimated pyrazolones in excellent yields (>= 90%). Crown Copyright (C) 2009 Published by Elsevier Ltd. All rights reserved
Nayak; Mittra, Journal of the Indian Chemical Society, 1980, vol. 57, # 6, p. 643 - 645
作者:Nayak、Mittra
DOI:——
日期:——
Dibromination of 5-pyrazolones and 5-hydroxypyrazoles via dibromoisocyanuric acid
作者:Kaung-Min Cheng、Jin Bin Wu、Hui-Chang Lin、Jiann-Jyh Huang、Yu-Ying Huang、Shao-Kai Lin、Tsung-Ping Lin、Fung Fuh Wong
DOI:10.1002/jhet.442
日期:——
A safe and efficient method was developed for the dibromination of pyrazolones and 5‐hydroxypyrazoles by use of dibromoisocyanuricacid (DBI). The reaction gave the corresponding dibrominated pyrazolones in excellent yields (≥91%). J. Heterocyclic Chem., (2010).