Synthesis, spectral, MOE and cytotoxic studies of nano Ru (III), Pr (III) and Gd (III) metal complexes with new Schiff base ligand based on dibenzoyl methane and anthranilic acid,Applied Organometallic Chemistry

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Synthesis, spectral, MOE and cytotoxic studies of nano Ru (III), Pr (III) and Gd (III) metal complexes with new Schiff base ligand based on dibenzoyl methane and anthranilic acid
Applied Organometallic Chemistry ( IF 3.7 ) Pub Date : 2020-05-22 , DOI: 10.1002/aoc.5801
Nessma F. Mahmoud ₁ , Walaa H. Mahmoud _{1,

2} , Gehad G. Mohamed _{1,

2}

Affiliation

Three metal complexes of Gd (III), Pr (III) and Ru (III) metal ions with Schiff base ligand (H₂L) (prepared through l:2 condensation of dibenzoyl methane and anthranilic acid) were prepared and characterized using various physio‐chemical methods like: elemental analyses, IR, mass spectrometry, magnetic moment, ¹H NMR, SEM and TG/DTG thermal analysis. The analytical and spectroscopic tools showed that the complexes had composition of ML type with octahedral geometry. The mass spectra gave the possible molecular ion peaks of the Schiff base ligand and three metal chelates. The ¹H NMR data supported the IR finding that the ligand coordinated to the metal ions via carboxylate proton displacement. Thermal analysis (TG/DTG) was utilized to differentiate between coordinated and hydrated water molecules. The Schiff base (H₂L) and its metal complexes have been screened for their antibacterial activity against Gram (+) bacteria (Streptococcus aureus and Bacillis subtilis), Gram (−) bacteria (Salmonella typhimurium and Escherichia coli) and two fungi (Aspergillus fumigatu and Candida albicans) organisms by agar diffusion method. The anticancer activity was screened against human breast cancer cell line (MCF‐7). The H₂L ligand and its metal chelates were docked using MOE 2008 software with crystal structure of Gram (+) bacteria: Staphylococcus aureus (PDB ID: 3Q8U) and Gram (−) bacteria: Salmonella typhimurium (PDB ID: lDZR) to identify the binding orientation or conformation of the complex in the active site of the protein.

中文翻译：

具有基于二苯甲酰甲烷和邻氨基苯甲酸的新型席夫碱配体的纳米Ru（III），Pr（III）和Gd（III）金属配合物的合成，光谱，MOE和细胞毒性研究

制备了三种具有Schiff碱配体（H ₂ L）的Gd（III），Pr（III）和Ru（III）金属离子的金属配合物（通过二苯甲酰甲烷和邻氨基苯甲酸的1：2缩合制备），并使用多种方法进行了表征化学方法，例如：元素分析，红外，质谱，磁矩，¹ H NMR，SEM和TG / DTG热分析。分析和光谱工具显示该配合物具有ML类型的组成，具有八面体几何形状。质谱给出了席夫碱配体和三种金属螯合物的可能的分子离子峰。在¹1 H NMR数据支持IR，发现该配体通过羧酸根质子置换与金属离子配位。利用热分析（TG / DTG）区分配位和水合水分子。已经筛选了希夫碱（H ₂ L）及其金属配合物对革兰氏（+）细菌（金黄色链球菌和枯草杆菌），革兰氏（-）细菌（鼠伤寒沙门氏菌和大肠杆菌）和两种真菌（曲霉）的抗菌活性fumigatu和白色念珠菌）琼脂扩散法。针对人乳腺癌细胞系（MCF-7）筛选了抗癌活性。H ₂使用MOE 2008软件将L配体及其金属螯合物与革兰氏（+）细菌：金黄色葡萄球菌（PDB ID：3Q8U）和革兰氏（-）细菌：鼠伤寒沙门氏菌（PDB ID：lDZR）的晶体结构对接以鉴定结合方向蛋白质活性位点中复合物的构象或构象。

更新日期：2020-05-22

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