Metal Complexes Containing Bioactive Ligands: Structure and Biological Evaluation, 2nd Edition

A special issue of Inorganics (ISSN 2304-6740). This special issue belongs to the section "Bioinorganic Chemistry".

Deadline for manuscript submissions: 31 July 2026 | Viewed by 926

Special Issue Editor

Special Issue Information

Dear Colleagues,

Bioactive ligands are compounds with high selectivity and reactivity towards free radicals, cancer cell lines, bacteria, viruses, fungi, etc. Organometallic compounds containing Cu, Fe, Zn, Pd, Sn, Ni, and Ru ions, as well as bioactive ligands, also exhibit prominent biological activities. Computational chemistry, in the first instance, Density Functional Theory, is an indispensable tool for predicting stability, synthetic reaction pathways, and spectral assignments, as well as for studying inter- and intramolecular interactions. On the other hand, Molecular Docking and Molecular Dynamics are important for investigating the interactions of these compounds with key biomolecules, such as proteins, lipids, and DNA. Based on known biological activity, toxicity, and physicochemical properties, Quantitative Structure–Activity Relationships (QSAR) can be applied to predict the properties of theoretically developed or synthesized compounds.

Following the success of the first edition, this second volume of the Special Issue has been launched to present modern synthetic procedures for the chemical modification of bioactive compounds, including complexation with transition metals, with a clear outline of the modification mechanism and complete chemical characterization of intermediates and products. This research topic also covers theoretical methods for predicting reaction mechanisms, compound stability, complexation modes, and interactions using DFT, Natural Bond Orbital, and Quantum Theory of Atoms in Molecules Analyses. Articles, including those on Molecular Docking and Molecular Dynamics, and SARS studies, are also welcome if they include the prediction of physicochemical properties, binding modes, toxicity, or biological activity of compounds derived from natural products and their transition metal complexes.

Dr. Dušan Dimić
Guest Editor

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Keywords

  • bioactive ligands
  • transition metal complexes
  • DFT
  • molecular dynamics
  • cytotoxicity
  • antioxidant activity

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Published Papers (1 paper)

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Research

21 pages, 2284 KB  
Article
Synthesis, Characterization and Anticancer Activities of Zn2+, Ni2+, Co2+, and Cu2+ Complexes of 4-Benzopyranone-2-carboxylic Acid
by Qianqian Kang, Qasim Umar, Wenjie Zhang, Xianggao Meng, Hao Yin, Mei Luo and Yanmin Zhang
Inorganics 2026, 14(1), 26; https://doi.org/10.3390/inorganics14010026 - 12 Jan 2026
Viewed by 627
Abstract
Coordination complexes play a crucial role in modern research. 4-benzopyranone-2-carboxylic acid is a fascinating class of molecules with numerous applications, including the synthesis of pharmaceuticals and valuable chiral compounds. Antibacterial and tuberculostatic medicines, HIV protease inhibitors, intermediates in organic synthesis, and organic catalysis [...] Read more.
Coordination complexes play a crucial role in modern research. 4-benzopyranone-2-carboxylic acid is a fascinating class of molecules with numerous applications, including the synthesis of pharmaceuticals and valuable chiral compounds. Antibacterial and tuberculostatic medicines, HIV protease inhibitors, intermediates in organic synthesis, and organic catalysis are only a few of the biological applications of chiral complexes. In this study, the synthesis of four metal complexes, C30H28N2NiO12 [Ni(bzpyr)2(py)2(H2O)2] (I), C30H24CoN2O10 [Co(bzpyr)2(py)2(H2O)2] (II), C20H20O13Zn [Zn(bzpyr)2(H2O)3] (III), and C30H22CuN2O9 [Cu(bzpyr)2(py)2(H2O)] (IV), is reported via direct reactions of 4-benzopyranone-2-carboxylic acid with metal salts and pyridine in anhydrous ethanol. Single-crystal X-ray diffraction analysis revealed that complexes I and II crystallize in the chiral space group P-1, whereas III and IV crystallize in the centrosymmetric space group P21/c. The structures of these complexes were further characterized by infrared spectroscopy, UV-Visible Diffuse Reflectance Spectroscopy, electrospray ionization mass spectrometry (ESI-MS), elemental analysis, nuclear magnetic resonance, electron paramagnetic resonance spectroscopy and single-crystal X-ray diffraction. In addition, the cytotoxic activities of complexes I–IV were evaluated against the human tumor cell lines K562, A549, HepG2, MDA-MB-231, and SW480, and molecular docking studies were conducted on the four complexes. Full article
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