Spectroscopic analysis by NMR, FT-Raman, ATR-FTIR, and UV-Vis, evaluation of antimicrobial activity, and in silico studies of chalcones derived from 2-hydroxyacetophenone
作者:Jayze da Cunha Xavier、Francisco W.Q. de Almeida-Neto、Janaína E. Rocha、Thiago S. Freitas、Priscila R. Freitas、Ana C.J. de Araújo、Priscila T. da Silva、Carlos E.S. Nogueira、Paulo N. Bandeira、Márcia M. Marinho、Emmanuel S. Marinho、Nitin Kumar、Antônio C.H. Barreto、Henrique D.M. Coutinho、Murilo S.S. Julião、Hélcio S. dos Santos、Alexandre M.R. Teixeira
DOI:10.1016/j.molstruc.2021.130647
日期:2021.10
ciprofloxacin, penicillin, and erythromycin antibiotics were tested against multiresistant strains of Staphylococcus aureus. It was also verified by in vitro and in silico studeis the capacity of these chalcones to inhibit the NorA efflux pump. The MICs values of ciprofloxacin were reduced in the presence of all tested chalcones. For norfloxacin antibiotic, the chalcones A1, A4, A5 and A6 promoted the reduced
合成了六个 2'-羟基查尔酮,并通过 NMR、FT-拉曼、ATR-FTIR 和 UV-Vis 对其进行了表征。测试了这些单独的查耳酮与环丙沙星,青霉素和红霉素抗生素对金黄色葡萄球菌多耐药株的抵抗力。它还通过体外和计算机验证研究这些查耳酮抑制 NorA 外排泵的能力。在所有测试查耳酮存在的情况下,环丙沙星的 MIC 值都会降低。对于诺氟沙星抗生素,查耳酮A1、A4、A5和A6促进了MIC值的降低。A2 查耳酮是唯一一种与青霉素结合时降低 MIC 值的物质。当与红霉素结合时,任何查耳酮都不能降低 MIC 值。这些结果表明合成的查耳酮的协同效应受呋喃环 (A1)、氯原子和 C4 位 (A2 和 A4) 处的甲氧基、第二个双键 (A5)、和在 C2 位置 (A6) 的氟原子。ADMET 分析预测查耳酮 A2、A3、A5 和 A6 更容易渗透细胞。亲核区使 A5 查耳酮能够与血浆蛋白共价结合,含氧芳香取代的存在使查耳酮