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Pincer Complexes Derived from Tridentate Schiff Bases for Their Use as Antimicrobial Metallopharmaceuticals. INORGANICS 2022. [DOI: 10.3390/inorganics10090134] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
Within the current challenges in medicinal chemistry, the development of new and better therapeutic agents effective against infectious diseases produced by bacteria, fungi, viruses, and parasites stands out. With chemotherapy as one of the main strategies against these diseases focusing on the administration of organic and inorganic drugs, the latter is generally based on the synergistic effect produced by the formation of metal complexes with biologically active organic compounds. In this sense, Schiff bases (SBs) represent and ideal ligand scaffold since they have demonstrated a broad spectrum of antitumor, antiviral, antimicrobial, and anti-inflammatory activities, among others. In addition, SBs are synthesized in an easy manner from one-step condensation reactions, being thus suitable for facile structural modifications, having the imine group as a coordination point found in most of their metal complexes, and promoting chelation when other donor atoms are three, four, or five bonds apart. However, despite the wide variety of metal complexes found in the literature using this type of ligands, only a handful of them include on their structures tridentate SBs ligands and their biological evaluation has been explored. Hence, this review summarizes the most important antimicrobial activity results reported this far for pincer-type complexes (main group and d-block) derived from SBs tridentate ligands.
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Mohebbi Jahromi Z, Asadi Z, Eigner V, Dusek M, Rastegari B. A new phenoxo-bridged dicopper Schiff base Complex: Synthesis, Crystal Structure, DNA/BSA Interaction, Cytotoxicity Assay and Catecholase Activity. Polyhedron 2022. [DOI: 10.1016/j.poly.2022.115891] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Hassan ZM, Alattar RA, Abass SK, Mihsen HH, Abbas ZF, Hussain KA. Synthesis, Characterization and Biological Activity of Mixed Ligand (Imine of Benzidine and 1,10-Phenanthroline) Complexes with Fe(II), Co(II), Ni(II) and Cu(II) Ions. CHEMISTRY & CHEMICAL TECHNOLOGY 2022. [DOI: 10.23939/chcht16.01.015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
In this paper, binuclear metal complexes of the metal ions Fe(II), Co(II), Ni(II) and Cu(II) were synthesized by the reaction of the primary ligand (imine of benzidine) (H2L) and the secondary ligand (1,10-phenanthroline) (L`) with these metal ions in a molar ratio of 1:2:2, respectively. The complexes were characterized using CHN elemental analysis, FT-IR, UV-Vis, magnetic susceptibility, molar conductivity, 1H NMR, and TGA-DTA thermogravimetric analysis. According to the results obtained from the elemental analysis and spectral measurements where complexes of Fe(II), Co(II) and Ni(II) have octahedral geometry, while the complex with Cu(II) has a square planar geometry. All the prepared complexes are wholly stable and can keep for months without any significant change. The antibacterial activities of the prepared compounds were evaluated with regard to two bacteria species, gram-negative Proteus and Kelbsiella, by using diffusion agar plates. The inhibition zone diameter around the holes indicated the sensitivity of the bacteria to these compounds, where the Klebsiella bacteria were revealed to be more highly sensitive to these compounds than Proteus bacteria. All synthesized complexes showed more significant effects against Kelbsiella and Protea than the antibiotic (Amikacin).
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Singh K, Siwach P. Synthesis, spectroscopic, theoretical and biological evaluation of novel Schiff base complexes of divalent transition metals. Appl Organomet Chem 2021. [DOI: 10.1002/aoc.6553] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Kiran Singh
- Department of Chemistry Kurukshetra University Kurukshetra India
| | - Preeti Siwach
- Department of Chemistry Kurukshetra University Kurukshetra India
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Zalevskaya OA, Gur’eva YA. Recent Studies on the Antimicrobial Activity of Copper Complexes. RUSS J COORD CHEM+ 2021. [DOI: 10.1134/s1070328421120046] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Synthesis of Polymer Nanospheres Conjugated Ce (IV) Complexes for Constructing Double Antibacterial Centers. J Inorg Organomet Polym Mater 2021. [DOI: 10.1007/s10904-021-02165-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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Mixed-ligand complexes of ampicillin derived Schiff base ligand and Nicotinamide: Synthesis, physico-chemical studies, DFT calculation, antibacterial study and molecular docking analysis. J Mol Struct 2021. [DOI: 10.1016/j.molstruc.2020.129832] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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Designing, spectroscopic characterization, biological screening and antioxidant activity of mononuclear transition metal complexes of bidentate Schiff base hydrazones. J CHEM SCI 2021. [DOI: 10.1007/s12039-020-01854-6] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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Baecker D, Sesli Ö, Knabl L, Huber S, Orth-Höller D, Gust R. Investigating the antibacterial activity of salen/salophene metal complexes: Induction of ferroptosis as part of the mode of action. Eur J Med Chem 2020; 209:112907. [PMID: 33069056 DOI: 10.1016/j.ejmech.2020.112907] [Citation(s) in RCA: 33] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2020] [Revised: 09/29/2020] [Accepted: 10/03/2020] [Indexed: 12/16/2022]
Abstract
The continuous increase of resistant bacteria including Staphylococcus aureus and its methicillin-resistant phenotype (MRSA) is currently one of the major challenges in medicine. Therefore, the discovery of novel lead structures for the design of drugs to fight against infections caused by these bacteria is urgently needed. In this structure-activity relationship study, metal-based drugs were investigated for the treatment of resistant pathogens. The selected Ni(II), Cu(II), Zn(II), Mn(III), and Fe(II/III) complexes differ in their salen- and salophene-type Schiff base ligands. The in vitro activity was evaluated using gram-positive (S. aureus and MRSA) and gram-negative bacteria (Escherichia coli and Pseudomonas aeruginosa). Especially the iron(III) complexes displayed promising antimicrobial effects against gram-positive bacteria, with MIC90 values ranging from 0.781 to 50 μg/mL. Among them, chlorido[(N,N'-bis(salicylidene)-1,2-phenylenediamine]iron(III) (6) showed the best MIC90 value (0.781 μg/mL = 1.93 μmol/L) against S. aureus and MRSA. Complex 6 was comparably potent as ciprofloxacin against S. aureus (0.391 μg/mL = 1.18 μmol/L) and only marginally less active than tetracycline against MRSA (0.391 μg/mL = 0.88 μmol/L). As part of the mode of action, ferroptosis was identified. Applying compound 6 (10 μg/mL), both gram-positive strains grown in PBS were killed within 20 min. This efficacy basically documents that salophene iron(III) complexes represent possible lead structures for the further development of antibacterial metal complexes.
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Affiliation(s)
- Daniel Baecker
- Department of Pharmaceutical Chemistry, Institute of Pharmacy, CMBI - Center for Molecular Biosciences Innsbruck, University of Innsbruck, CCB - Centrum for Chemistry and Biomedicine, Innrain 80-82, 6020, Innsbruck, Austria
| | - Özcan Sesli
- Department of Pharmaceutical Chemistry, Institute of Pharmacy, CMBI - Center for Molecular Biosciences Innsbruck, University of Innsbruck, CCB - Centrum for Chemistry and Biomedicine, Innrain 80-82, 6020, Innsbruck, Austria; Division of Hygiene and Medical Microbiology, Medical University of Innsbruck, Schöpfstraße 41, 6020, Innsbruck, Austria
| | - Ludwig Knabl
- Institute of Virology, Medical University of Innsbruck, Peter-Mayr-Straße 4b, 6020, Innsbruck, Austria
| | - Silke Huber
- Division of Hygiene and Medical Microbiology, Medical University of Innsbruck, Schöpfstraße 41, 6020, Innsbruck, Austria
| | - Dorothea Orth-Höller
- Division of Hygiene and Medical Microbiology, Medical University of Innsbruck, Schöpfstraße 41, 6020, Innsbruck, Austria
| | - Ronald Gust
- Department of Pharmaceutical Chemistry, Institute of Pharmacy, CMBI - Center for Molecular Biosciences Innsbruck, University of Innsbruck, CCB - Centrum for Chemistry and Biomedicine, Innrain 80-82, 6020, Innsbruck, Austria.
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Asghar M, Habib S, Zaman W, Hussain S, Ali H, Saqib S. Synthesis and characterization of microbial mediated cadmium oxide nanoparticles. Microsc Res Tech 2020; 83:1574-1584. [PMID: 32757348 DOI: 10.1002/jemt.23553] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2020] [Revised: 07/03/2020] [Accepted: 07/04/2020] [Indexed: 12/24/2022]
Abstract
Microbial mediated synthesis of metallic nanoparticles constitutes as effective and promising approach for the development of antibacterial materials in the field of bioengineering and biomedicine. We prepared Cadmium oxide nanoaprticles (CdO NPs) utilizing Penicillium oxalicum, and cadmium acetate solution via coprecipitate method. The elemental composition and morphology of these synthesized CdO NPs were examined through X-ray diffraction (XRD), UV-Vis absorption spectroscopy, Fourier transform infrared spectroscopy (FTIR), Scanning electron microscopy (SEM), and Energy dispersive spectroscopy (EDS). Furthermore, we evaluated the bactericidal potential of prepared CdO NPs using Escherichia coli (E.coli), Staphylococcus aureus (S.aureus), Bacillus cereus (B.cereus), and Pseudomonas aeruginosa (P. aeruginosa). Dimethyl sulfoxide was used as negative control while erythromycin was used as positive control. The XRD spectrum revealed cubic crystalline nanoparticles with 22.94 nm size and UV showed absorbance peak at 297 nm with 2.5 eV band gap energy. FTIR depicted O─H and carboxylic groups along with CdO stretching vibration. EDS showed the presence of organic compounds on Cd and O over NPs surface. SEM results revealed the spherical shape of the CdO NPs. The synthesized NPs exhibited highly potent bactericidal activity against selected strains and demonstrated less optical density of 0.086 after 24 hr. Owing to the significant antibacterial activity of CdO NPs, the broad application prospects of these nanoparticles CdO NPs in extensive biomedical applications is indicated.
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Affiliation(s)
- Mehrina Asghar
- Department of Biotechnology, Mohi-ud-Din Islamic University, Nerian Sharif, Pakistan
| | - Sadaf Habib
- School of Life Sciences, Sun Yat-sen University, Guangzhou, Guangdong, China.,Shenzhen Key Laboratory of Southern Subtropical Plant Diversity, Fairy Lake Botanical Garden, Shenzhen & Chinese Academy of Sciences, Shenzhen, Guangdong, China
| | - Wajid Zaman
- State Key Laboratory of Systematic and Evolutionary Botany, Institute of Botany, Chinese Academy of Sciences, Beijing, China.,University of Chinese Academy of Sciences, Beijing, China
| | - Sajjad Hussain
- Henan Key Laboratory of Boron Chemistry and Advanced Energy Materials, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, China
| | - Huma Ali
- Department of Microbilogy, Quaid-i-Azam University, Islamabad, Pakistan
| | - Saddam Saqib
- Department of Biotechnology, Mohi-ud-Din Islamic University, Nerian Sharif, Pakistan.,State Key Laboratory of Systematic and Evolutionary Botany, Institute of Botany, Chinese Academy of Sciences, Beijing, China.,University of Chinese Academy of Sciences, Beijing, China
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Iqbal M, Karim A, Ali S, Bilal H, Rehman AU. Synthesis, Characterization, Structural Description, Micellization Behavior, DNA Binding Study and Antioxidant Activity of 4, 5 and 6‐Coordinated Copper(II) and Zinc(II) Complexes. Z Anorg Allg Chem 2020. [DOI: 10.1002/zaac.202000139] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Muhammad Iqbal
- Department of Chemistry Bacha Khan University 24420 Charsadda KPK Pakistan
| | - Amir Karim
- Department of Chemistry Bacha Khan University 24420 Charsadda KPK Pakistan
| | - Saqib Ali
- Department of Chemistry Quaid‐i‐Azam University 45320 Islamabad Pakistan
| | - Hazrat Bilal
- Department of Chemistry Bacha Khan University 24420 Charsadda KPK Pakistan
| | - Ata Ur Rehman
- Department of Chemistry Bacha Khan University 24420 Charsadda KPK Pakistan
- School of Chemical Engineering Northwest University Xi'an Shaanxi P. R. China
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Azam Z, Ayaz A, Younas M, Qureshi Z, Arshad B, Zaman W, Ullah F, Nasar MQ, Bahadur S, Irfan MM, Hussain S, Saqib S. Microbial synthesized cadmium oxide nanoparticles induce oxidative stress and protein leakage in bacterial cells. Microb Pathog 2020; 144:104188. [DOI: 10.1016/j.micpath.2020.104188] [Citation(s) in RCA: 39] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2020] [Revised: 03/31/2020] [Accepted: 04/03/2020] [Indexed: 12/28/2022]
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Ashrafi AM, Kopel P, Richtera L. An Investigation on the Electrochemical Behavior and Antibacterial and Cytotoxic Activity of Nickel Trithiocyanurate Complexes. MATERIALS (BASEL, SWITZERLAND) 2020; 13:E1782. [PMID: 32290102 PMCID: PMC7179009 DOI: 10.3390/ma13071782] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/27/2020] [Revised: 04/01/2020] [Accepted: 04/07/2020] [Indexed: 12/29/2022]
Abstract
The electrochemical redox behavior of three trinuclear Ni(II) complexes [Ni3(abb)3(H2O)3(µ-ttc)](ClO4)3 (1), [Ni3(tebb)3(H2O)3(µ-ttc)](ClO4)3·H2O (2), and [Ni3(pmdien)3(µ-ttc)](ClO4)3 (3), where abb = 1-(1H-benzimidazol-2-yl)-N-(1H-benzimidazol-2-ylmethyl)methan-amine, ttcH3 = trithiocyanuric acid, tebb = 2-[2-[2-(1H-benzimidazol-2-yl)ethylsulfanyl]ethyl]-1H-benzimidazole, and pmdien = N,N,N',N″,N″-pentamethyldiethylenetriamine is reported. Cyclic voltammetry (CV) was applied for the study of the electrochemical behavior of these compounds. The results confirmed the presence of ttc and nickel in oxidation state +2 in the synthesized complexes. Moreover, the antibacterial properties and cytotoxic activity of complex 3 was investigated. All the complexes show antibacterial activity against Staphylococcus aureus and Escherichia coli to different extents. The cytotoxic activity of complex 3 and ttcNa3 were studied on G-361, HOS, K-562, and MCF7 cancer cell lines. It was found out that complex 3 possesses the cytotoxic activity against the tested cell lines, whereas ttcNa3 did not show any cytotoxic activity.
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Affiliation(s)
| | | | - Lukas Richtera
- Faculty of Electrical Engineering and Communication, Department of Microelectronics, Brno University of Technology, Technicka 3058/10, CZ-616 00 Brno, Czech Republic; (A.M.A.); (P.K.)
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Al-Omair MA. Biochemical activities and electronic spectra of different cobalt phenanthroline complexes. ARAB J CHEM 2019. [DOI: 10.1016/j.arabjc.2018.11.006] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022] Open
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Zhu Y, Xiong X, Suo Z, Tang P, Sun Q, Ding X, Li H. Synthesis, structure, and DNA-binding study of a novel Zn (II) complex with fleroxacin and 1,10-phenanthroline monohydrate. INORG CHEM COMMUN 2019. [DOI: 10.1016/j.inoche.2019.02.039] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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