α-AMINOPHOSPHONATES BEARING FREE HYDROXYL GROUPS IN THE AROMATIC RINGS. SYNTHESIS AND NMR CHARACTERIZATION
作者:Salvatore Failla、Paolo Finocchiaro、Gerhard Hägele、Vitaly I. Kalchenko
DOI:10.1080/10426509708031564
日期:1997.9
very good yields to mono- and bis-α-aminophosphonic acid dialkylesters containing the free phenolic hydroxyl group in a strategic position of the aromatic ring in order to enhance complexation with metal ions. This synthetic procedure is based on the addition of a solution of sodium dialkyl phosphite in phosphite to imine precursors. The addition reaction is highly stereospecific: only one diastereomer
Preparation and Characterization of poly(Azomethines) Containing Ether and Methylene Bridges: Photophysical, Electrochemical, Conductivity and Thermal Properties
作者:İsmet Kaya、Tahsin Yılmaz
DOI:10.1007/s10895-016-1966-1
日期:2017.1
paper, a series of polyazomethines (PAZs) were prepared using dihydroxy substituted Schiff bases and 1,4-diiodobenzene. Also, different group effect such as methylene carbon and etheric oxygen bridges on photophysical, electrochemical, conductivity and thermal properties were clarified. The new polymeric materials structures were confirmed by means of 1H–NMR, FT-IR and UV-vis measurements. The molecular
Characterization of bis‐Schiff bases synthesized using ZnFe<sub>2</sub>O<sub>4</sub>nanoparticles as catalyst, and examination of their antibacterial and<i>in vitro</i>cytotoxic properties
作者:Hamed Maaref、Enayatollah Sheikhhosseini、Mohammad Mehdi Foroughi、Mohammad Reza Akhgar、Shohreh Jahani
DOI:10.1002/aoc.5557
日期:2020.4
In this study, ZnFe2O4 nanoparticles (NPs) were prepared by a hydro/solvothermal method, and their structures were characterized by infrared, scanning electron microscopy, energy‐dispersiveX‐ray spectroscopy and X‐raydiffraction analyses. These ZnFe2O4 NPs were used in the synthesis of new bis‐Schiff bases by condensation of hydroxyl‐substituted aldehydes with various aromatic diamines in aqueous
在这项研究中,采用水热/溶剂热法制备了ZnFe 2 O 4纳米颗粒(NPs),并通过红外,扫描电子显微镜,能量色散X射线光谱和X射线衍射分析对其结构进行了表征。这些ZnFe 2 O 4通过在水介质中将羟基取代的醛与各种芳族二胺缩合,NP用于合成新的双席夫碱。测试了合成的bis-Schiff碱基对革兰氏阴性和革兰氏阳性细菌的抗菌活性。MTT方法用于评估bis-Schiff碱基对人肺癌和乳腺癌细胞系的抗癌活性。结果表明这些化合物可被视为新的抗肿瘤候选药物。
Sonochemical synthesis of New Thiazolidin-4-one derivatives as potent anticancer and antimicrobial agents with Docking design, and Energy gap estimation
作者:Sangar Ali Hassan、Jala Bahjat Ziwar、Dara muhammed Aziz、Media Noori Abdullah
DOI:10.1016/j.molstruc.2023.137282
日期:2024.4
Thiazolidin-4-ones have important biological features, which has led to the development of newderivatives employing an efficient ultrasonic method. Schiff base derivatives were synthesized by condensation of 4,4′-diaminophenylmethane with various substituted benzaldehyde. These derivatives are subsequently subjected to cyclization, leading to the formation of thiazolidine-4-ones with favorable yields
Thiazolidin-4-ones 具有重要的生物学特性,这导致了采用高效超声波方法开发新衍生物。通过4,4'-二氨基苯基甲烷与各种取代苯甲醛的缩合合成了席夫碱衍生物。这些衍生物随后进行环化,导致以良好的产率形成噻唑烷-4-酮。使用各种分析技术(例如 FT-IR、1 H 和13 C NMR、HRMS 光谱和 CHNS 分析)对合成的化合物进行了表征。Thiazolidin-4-ones 在不同浓度(1mM、3mM 和 5mM)下的细胞活力百分比和细胞毒性(1mM、3mM 和 5mM)下表现出抗癌潜力。发现化合物4g的IC 50值分别为(72.27±1.39、67.28±1.63和63.22±1.82)、(36.77±0.11、32.71±0.31和32.71±0.31)和10.77±0.95。按照标准来说,这是一个很好的结果。测试的化合物对金黄色葡萄球菌、大肠杆菌和白色念珠菌等细菌菌株表