当前位置: X-MOL 学术J. Mol. Struct. › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Novel β-lactam antibiotic derivative and its complexes: DFT, frontier energy levels, DNA interaction, docking, physicochemical and antimicrobial properties
Journal of Molecular Structure ( IF 4.0 ) Pub Date : 2020-10-01 , DOI: 10.1016/j.molstruc.2020.128487
Abbas M. Abbas , Sara R. Fisal , Adel S. Orabi

Abstract Ampicillin acetylacetone Schiff base (HAA) and its complexes with Co(II), Ni(II), Cu(II), Eu(III) and Gd(III) obtained in pure form. The obtained compounds characterized by CHNM%, FTIR, UV–Vis, Fluorescence, 1HNMR, Mass spectra, DTA, TGA, Magnetic susceptibility, X-ray, AAS, melting point, solubility in different solvents and the conductivity of 0.001 M in DMSO. The obtained data indicate the formation of the target complexes in the form [Co(AA)(H2O)2]NO3.2H2O, [Ni(AA)(H2O)2]Cl.4H2O, [Cu(AA)]Cl.2.5H2O, [Eu(AA)(H2O)Cl]Cl.6H2O and [Gd(AA)(H2O)(NO3)]NO3.2H2O. Co and Ni gave Oh structure while Cu gave square planar form. The Crystal field parameters calculated and discussed for the target complexes. Molecular modelling, molecular mechanics and DFT calculation carried out to the synthesized compounds. The x-ray analysis indicates the nanoparticle behaviour for the Cu-AA complex with an orthorhombic structure. The interactions of the synthesized complexes with DNA moiety investigated with means of spectrometric titration (UV–vis. spectra) and by using fluorescence spectroscopy. Antimicrobial activities of the synthesized compounds screened using the disc diffusion method. HAA and Cu-AA gave activity exceeded the Ampicillin. The docking work carried using the targeting protein of Escherichia coli FabH (PDB code: 1HNJ). The obtained binding energy compared and discussed in terms of the in vitro studies.

中文翻译:

新型 β-内酰胺抗生素衍生物及其复合物:DFT、前沿能级、DNA 相互作用、对接、物理化学和抗菌特性

摘要 氨苄青霉素乙酰丙酮席夫碱 (HAA) 及其与 Co(II)、Ni(II)、Cu(II)、Eu(III) 和 Gd(III) 的复合物以纯形式获得。所得化合物通过 CHNM%、FTIR、UV-Vis、荧光、1HNMR、质谱、DTA、TGA、磁化率、X 射线、AAS、熔点、在不同溶剂中的溶解度和 0.001 M 在 DMSO 中的电导率进行表征。获得的数据表明目标配合物的形成形式为 [Co(AA)(H2O)2]NO3.2H2O, [Ni(AA)(H2O)2]Cl.4H2O, [Cu(AA)]Cl.2.5 H2O、[Eu(AA)(H2O)Cl]Cl.6H2O 和 [Gd(AA)(H2O)(NO3)]NO3.2H2O。Co 和 Ni 形成 Oh 结构,而 Cu 形成方形平面形式。为目标配合物计算和讨论的晶体场参数。对合成的化合物进行了分子建模、分子力学和 DFT 计算。X 射线分析表明具有正交结构的 Cu-AA 复合物的纳米颗粒行为。合成的复合物与 DNA 部分的相互作用用光谱滴定法(UV-vis. 光谱)和荧光光谱法研究。使用圆盘扩散法筛选合成化合物的抗菌活性。HAA和Cu-AA的活性超过氨苄青霉素。对接工作使用大肠杆菌FabH(PDB代码:1HNJ)的靶向蛋白进行。获得的结合能在体外研究方面进行了比较和讨论。使用圆盘扩散法筛选合成化合物的抗菌活性。HAA和Cu-AA的活性超过氨苄青霉素。对接工作使用大肠杆菌FabH(PDB代码:1HNJ)的靶向蛋白进行。获得的结合能在体外研究方面进行了比较和讨论。使用圆盘扩散法筛选合成化合物的抗菌活性。HAA和Cu-AA的活性超过氨苄青霉素。对接工作使用大肠杆菌FabH(PDB代码:1HNJ)的靶向蛋白进行。获得的结合能在体外研究方面进行了比较和讨论。
更新日期:2020-10-01
down
wechat
bug