已合成了一系列吡啶鎓(1-10)和喹啉鎓(11-20)1,2-二苯乙烯苯磺酸盐,并通过UV-vis,FT-IR和1 H NMR光谱研究了它们的结构。另外,化合物5也通过单晶X射线衍射技术测定。已经确定了合成化合物对革兰氏阳性和革兰氏阴性细菌的抗菌活性。喹啉鎓衍生物表现出两种非常有效的特征活性,即(i)对耐甲氧西林的金黄色葡萄球菌的比活性和(ii)具有宽带光谱活性。化合物11,13和14是对革兰氏阳性菌(耐甲氧西林金黄色葡萄球菌,金黄色葡萄球菌,枯草芽孢杆菌,耐万古霉素的粪肠球菌和粪肠球菌)和革兰氏阴性细菌(志贺氏菌)表现出最广谱抗菌活性的活性。发现这些化合物的MIC优于市售消毒剂苯扎氯铵(BZK)。
Synthesis, spectroscopy and computational studies of some novel π-conjugated vinyl N-alkylated quinolinium salts and their precursor's
作者:Jacek E. Nycz、Karolina Czyż、Marcin Szala、Jan G. Malecki、George Shaw、Brendan Gilmore、Marek Jon
DOI:10.1016/j.molstruc.2015.11.011
日期:2016.2
of π-conjugated vinyl N -methylated quinolinium salts ( 3 ) and their precursor's N -alkylated quinolinium salts ( 2 ) were prepared and characterized by NMR, IR, UV–Vis and MS spectroscopy. It was confirmed that the hydroxyl and amino derivatives of vinyl N -methylated quinolinium salts lead to spiro type compounds ( 4 ). The syntheses of N -alkylated quinolinium salts were successful, and even multigram
N-Methylquinolinium derivatives for photonic applications: Enhancement of electron-withdrawing character beyond that of the widely-used N-methylpyridinium
styryl quinolinium push–pull chromophores have been designed and synthesized in order to examine the electron-withdrawing strength of various quinolinium electron acceptor groups, and their influence on the photophysical properties and in particular on the second-order nonlinear optical response. The static molecular first hyperpolarizabilities measured by long-wavelength hyper-Rayleighscattering are
Design, synthesis and in vitro antitumour activity of new heteroaryl ethylenes
作者:Cosimo G. Fortuna、Vincenza Barresi、Carmela Bonaccorso、Giuseppe Consiglio、Salvatore Failla、Angela Trovato-Salinaro、Giuseppe Musumarra
DOI:10.1016/j.ejmech.2011.10.060
日期:2012.1
modifications suggested by the molecular modelling were verified by the synthesis of the designed molecules and by the evaluation of their in vitro activities against two lung tumour cell lines, A549 and H226. 2-(E)-2-[5′-(Dibutylamino)-2,2′-bithien-5-yl]vinyl}-1-methylquinoliniumiodide exhibited in vitro antiproliferative activity two orders of magnitude higher than that of the most active compound
Design and Synthesis of Novel c-di-GMP G-Quadruplex Inducers as Bacterial Biofilm Inhibitors
作者:Teng-Fei Xuan、Zi-Qiang Wang、Jun Liu、Hai-Tao Yu、Qian-Wen Lin、Wei-Min Chen、Jing Lin
DOI:10.1021/acs.jmedchem.1c00465
日期:2021.8.12
c-di-GMP-mediated biofilm regulatory pathway, was proposed in this study. In this new strategy, a series of novel c-di-GMP G-quadruplex inducers were designed and synthesized for development of therapeutic biofilm inhibitors. Compound 5h exhibited favorable c-di-GMP G-quadruplex-inducing activity and 62.18 ± 6.76% biofilm inhibitory activity at 1.25 μM without any DNA intercalation effect. Moreover, the
Abstract Methylpyridinium and methylquinolinium salts were condensed under solvent-free conditions with aromatic aldehydes in the presence of 1,8-diazabicyclo[5.4.]undec-7-ene (DBU) as catalyst, by grinding at room temperature. The products are dyes or useful intermediates. The DBU can be easily recycled and reused. GRAPHICAL ABSTRACT