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Kharpan B, Chetia J, Pyngrope H, Nandi R, Pradhan AK, Paul PC, Kumar D. Investigation of antileishmanial, antioxidant activities, CT-DNA interaction and DFT study of novel cobalt(II) complexes derived from mesogenic aromatic amino acids based Schiff base ligands. Biometals 2024:10.1007/s10534-024-00627-9. [PMID: 39154301 DOI: 10.1007/s10534-024-00627-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2024] [Accepted: 08/07/2024] [Indexed: 08/19/2024]
Abstract
In the present work, new Co(II) complexes were synthesized from mesogenic aromatic amino acids based Schiff base ligands, HL1 [Methyl 2-((2-hydroxy-4-(tetradecyloxy)benzylidene)amino)-3-phenylpropanoate] and HL2 [Methyl 2-((2-hydroxy-4-(tetradecyloxy)benzylidene)amino)-3-(1H-indol-2-yl)propanoate]. The compounds were thoroughly characterised using different elemental, thermogravimetric and spectroscopic studies. The in-vitro antileishmanial efficacy of the compounds against Leishmania donovani was evaluated by MTT assay and the antioxidant activity was performed by Mensor's method. The cell viability percentage and IC50 values for both the antileishmanial and antioxidant studies revealed that the cobalt(II) complexes are comparable to the standard, amphotericin B and ascorbic acid, respectively, signifying the potential applications of the biogenic compounds. The CT-DNA interaction experiments study using photophysical techniques indicated that the cobalt(II) complexes exhibited pronounced interactions as compared to the parent ligand. The parent ligands were found to possess mesogenicity as evidenced from the polarizing optical microscope (POM) and differential scanning calorimetry (DSC). The optical band gap of the compounds, as estimated from the Tauc plot of the UV-Vis spectra, lies within the domain of optoelectronic material properties, which was further supported through Density Functional Theory (DFT) study. Moreover, DFT methods have been used to explore the ground state geometry and DFT based reactivity descriptors of the two synthesised ligands, HL1 and HL2 along with their corresponding Co(II) complexes, Co(L1)2 and Co(L2)2. Reactivity descriptors obtained from Conceptual Density Functional Theory (CDFT) analysis reveal that Co(L1)2 is the most stable and Co(L2)2 is the most electrophilic.
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Affiliation(s)
| | - Jagritima Chetia
- Department of Chemistry, Assam University, Silchar, 788011, Assam, India
| | - Hunshisha Pyngrope
- Department of Chemistry, Assam University, Silchar, 788011, Assam, India
| | - Rajat Nandi
- Department of Microbiology, Assam University, Silchar, 788011, Assam, India
| | - Amit Kumar Pradhan
- Department of Chemistry, Indian Institute of Technology Delhi, New Delhi, 110016, India
| | - Pradip C Paul
- Department of Chemistry, Assam University, Silchar, 788011, Assam, India.
| | - Diwakar Kumar
- Department of Microbiology, Assam University, Silchar, 788011, Assam, India
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2
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Sarfraz M, Ayyaz M, Rauf A, Yaqoob A, Tooba, Arif Ali M, Siddique SA, Qureshi AM, Sarfraz MH, Aljowaie RM, Almutairi SM, Arshad M. New Pyrimidinone Bearing Aminomethylenes and Schiff Bases as Potent Antioxidant, Antibacterial, SARS-CoV-2, and COVID-19 Main Protease M Pro Inhibitors: Design, Synthesis, Bioactivities, and Computational Studies. ACS OMEGA 2024; 9:25730-25747. [PMID: 38911743 PMCID: PMC11191110 DOI: 10.1021/acsomega.3c09393] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/24/2023] [Revised: 05/18/2024] [Accepted: 05/23/2024] [Indexed: 06/25/2024]
Abstract
New 2-thioxopyrimidinone derivatives (A1-A10) were synthesized in 87-96% yields via a simple three-component condensation reaction. These compounds were screened extensively through in vitro assays for antioxidant and antibacterial investigations. The DPPH assays resulted in the excellent potency of A6-A10 as antioxidants with IC50 values of 0.83 ± 0.125, 0.90 ± 0.77, 0.36 ± 0.063, 1.4 ± 0.07, and 1.18 ± 0.06 mg/mL, which were much better than 1.79 ± 0.045 mg/mL for the reference ascorbic acid. These compounds exhibited better antibacterial potency against Klebsiella with IC50 values of 2 ± 7, 1.32 ± 8.9, 1.19 ± 11, 1.1 ± 12, and 1.16 ± 11 mg/mL for A6-A10. High-throughput screenings (HTS) of these motifs were carried out including investigation of drug-like behaviors, physiochemical property evaluation, and structure-related studies involving DFT and metabolic transformation trends. The radical scavenging ability of the synthesized motifs was validated through molecular docking studies through ligand-protein binding against human inducible nitric oxide synthase (HINOS) PDB ID: 4NOS, and the results were promising. Furthermore, the antiviral capability of the compounds was examined by in silico studies using two viral proteins PDB ID: 6Y84 and PDB ID: 6LU7. Binding poses of ligands were discussed, and amino acids in the protein binding pockets were investigated, where the tested compounds showed much better binding affinities than the standard inhibitors, proving to be suitable leads for antiviral drug discovery. The stabilities of the molecular docked complexes in real systems were validated by molecular dynamics simulations.
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Affiliation(s)
- Muhammad Sarfraz
- Institute
of Chemistry, The Islamia University of
Bahawalpur, Bahawalpur 63100, Pakistan
| | - Muhammad Ayyaz
- Institute
of Chemistry, The Islamia University of
Bahawalpur, Bahawalpur 63100, Pakistan
| | - Abdul Rauf
- Institute
of Chemistry, The Islamia University of
Bahawalpur, Bahawalpur 63100, Pakistan
| | - Asma Yaqoob
- Institute
of Biochemistry, Biotechnology, and Bioinformatics. Department of
Biochemistry and Molecular Biology, The
Islamia University of Bahawalpur, Bahawalpur 63100, Pakistan
| | - Tooba
- Institute
of Biochemistry, Biotechnology, and Bioinformatics. Department of
Biochemistry and Molecular Biology, The
Islamia University of Bahawalpur, Bahawalpur 63100, Pakistan
| | - Muhammad Arif Ali
- Institute
of Chemistry, The Islamia University of
Bahawalpur, Bahawalpur 63100, Pakistan
| | - Sabir Ali Siddique
- Institute
of Chemistry, The Islamia University of
Bahawalpur, Bahawalpur 63100, Pakistan
| | - Ashfaq Mahmood Qureshi
- Department
of Chemistry, Government Sadiq College Women
University, Bahawalpur 63100, Pakistan
| | - Muhammad Hassan Sarfraz
- Nuffield
Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences,
Botnar Institute of Musculoskeletal Sciences, University of Oxford, OxfordOX3 7LD, United
Kingdom
| | - Reem M. Aljowaie
- Department
of Botany and Microbiology, College of Science, King Saud University, P O 2455 Riyadh 11451, Saudi Arabia
| | - Saeedah Musaed Almutairi
- Department
of Botany and Microbiology, College of Science, King Saud University, P O 2455 Riyadh 11451, Saudi Arabia
| | - Muhammad Arshad
- Institute
of Chemistry, The Islamia University of
Bahawalpur, Bahawalpur 63100, Pakistan
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3
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Sindhu M, Kalaivani P, Prabusankar G, Sivasamy R, Prabhakaran R. Preparation of new organo-ruthenium(II) complexes and their nucleic acid/albumin binding efficiency and in vitro cytotoxicity studies. Dalton Trans 2024; 53:3075-3096. [PMID: 38235791 DOI: 10.1039/d3dt04017h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2024]
Abstract
Hetero-bimetallic ruthenium(II) complexes (PRAFIZ and PRBFIZ) containing acetyl ferrocene (AFIZ)/benzoyl ferrocene isonicotinic hydrazone ligands (BFIZ) were synthesized and characterized by various spectral and analytical techniques. The structure of acetyl ferrocene isonicotinic hydrazone (AFIZ) and the complex PRBFIZ was confirmed by X-ray crystallography. The hydrazide ligands coordinated in a bidentate monobasic fashion using their N1 hydrazinic nitrogen and enolic oxygen atoms. The binding interactions of the ligands and complexes were examined using Calf-Thymus DNA (CT-DNA) and bovine serum albumin (BSA). Scanning Electron Microscopic (SEM) experiments clarified the efficient binding interaction of the ligands and complexes with BSA. The results of in vitro cytotoxicity studies on MDA-MB-261 breast cancer cells and A549 human lung cancer cells and cell morphological analysis results through staining assays clearly indicated the cytotoxic nature of the complexes.
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Affiliation(s)
- M Sindhu
- Department of Chemistry, Nirmala College for Women, Bharathiar University, Coimbatore 641 018, India.
| | - P Kalaivani
- Department of Chemistry, Nirmala College for Women, Bharathiar University, Coimbatore 641 018, India.
| | - G Prabusankar
- Department of Chemistry, Indian Institute of Technology Hyderabad, Kandi 502 285, India
| | - R Sivasamy
- Department of Human Genetics and Molecular Biology, Bharathiar University, Coimbatore 641 046, India
| | - R Prabhakaran
- Department of Chemistry, Bharathiar University, Coimbatore 641 046, India.
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4
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Unprecedented bi- and trinuclear palladium(II)-sodium complexes from a salophen-type Schiff base: Synthesis, characterization, thermal behavior, and in vitro biological activities. J Mol Struct 2023. [DOI: 10.1016/j.molstruc.2022.134224] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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5
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Synthesis and Antimicrobial Activities of Boron-Containing Isoniazid Derivatives. CHEMISTRY AFRICA 2022. [DOI: 10.1007/s42250-022-00562-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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6
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Akram Derardja A, Golea L, Benali-Cherif R, Luneau D, Boutobba Z, Boumedjane Y, Harkat H. Synthesis, crystal structure, DFT calculations, Hirshfeld surface analysis and molecular docking studies of a new manganese complex. INORG CHEM COMMUN 2022. [DOI: 10.1016/j.inoche.2022.110198] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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7
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Tzima CS, Banti CN, Hadjikakou SK. Assessment of the biological effect of metal ions and their complexes using Allium cepa and Artemia salina assays: a possible environmental implementation of biological inorganic chemistry. J Biol Inorg Chem 2022; 27:611-629. [PMID: 36149503 PMCID: PMC9569305 DOI: 10.1007/s00775-022-01963-2] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2022] [Accepted: 09/04/2022] [Indexed: 11/25/2022]
Abstract
The pollution of aquatic ecosystems due to the elevated concentration of a variety of contaminants, such as metal ions, poses a threat to humankind, as these ecosystems are in high relevance with human activities and survivability. The exposure in heavy metal ions is responsible for many severe chronic and pathogenic diseases and some types of cancer as well. Metal ions of the groups 11 (Cu, Ag, Au), 12 (Zn, Cd, Hg), 14 (Sn, Pb) and 15 (Sb, Bi) highly interfere with proteins leading to DNA damage and oxidative stress. While, the detection of these contaminants is mainly based on physicochemical analysis, the chemical determination, however, is deemed ineffective in some cases because of their complex nature. The development of biological models for the evaluation of the presence of metal ions is an attractive solution, which provides more insights regarding their effects. The present work critically reviews the reports published regarding the toxicity assessment of heavy metal ions through Allium cepa and Artemia salina assays. The in vivo toxicity of the agents is not only dose depended, but it is also strongly affected by their ligand type. However, there is no comprehensive study which compares the biological effect of chemical agents against Allium cepa and Artemia salina. Reports that include metal ions and complexes interaction with either Allium cepa or Artemia salina bio-indicators are included in the review.
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Affiliation(s)
- Chrysoula S Tzima
- Section of Inorganic and Analytical Chemistry, Department of Chemistry, University of Ioannina, 45110, Ioannina, Greece
| | - Christina N Banti
- Section of Inorganic and Analytical Chemistry, Department of Chemistry, University of Ioannina, 45110, Ioannina, Greece.
| | - Sotiris K Hadjikakou
- Section of Inorganic and Analytical Chemistry, Department of Chemistry, University of Ioannina, 45110, Ioannina, Greece. .,Institute of Materials Science and Computing, University Research Center of Ioannina (URCI), Ioannina, Greece.
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8
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Kargar H, Fallah-Mehrjardi M, Behjatmanesh-Ardakani R, Bahadori M, Moghadam M, Ashfaq M, Munawar KS, Tahir MN. Pd(II) and Ni(II) complexes containing ONNO tetradentate Schiff base ligand: Synthesis, crystal structure, spectral characterization, theoretical studies, and use of PdL as an efficient homogeneous catalyst for Suzuki–Miyaura cross-coupling reaction. Polyhedron 2022. [DOI: 10.1016/j.poly.2021.115622] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
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9
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Lin Y, Betts H, Keller S, Cariou K, Gasser G. Recent developments of metal-based compounds against fungal pathogens. Chem Soc Rev 2021; 50:10346-10402. [PMID: 34313264 DOI: 10.1039/d0cs00945h] [Citation(s) in RCA: 44] [Impact Index Per Article: 14.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
This review provides insight into the rapidly expanding field of metal-based antifungal agents. In recent decades, the antibacterial resistance crisis has caused reflection on many aspects of public health where weaknesses in our medicinal arsenal may potentially be present - including in the treatment of fungal infections, particularly in the immunocompromised and those with underlying health conditions where mortality rates can exceed 50%. Combination of organic moieties with known antifungal properties and metal ions can lead to increased bioavailability, uptake and efficacy. Development of such organometallic drugs may alleviate pressure on existing antifungal medications. Prodigious antimicrobial moieties such as azoles, Schiff bases, thiosemicarbazones and others reported herein lend themselves easily to the coordination of a host of metal ions, which can vastly improve the biocidal activity of the parent ligand, thereby extending the library of antifungal drugs available to medical professionals for treatment of an increasing incidence of fungal infections. Overall, this review shows the impressive but somewhat unexploited potential of metal-based compounds to treat fungal infections.
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Affiliation(s)
- Yan Lin
- Chimie ParisTech, PSL University, CNRS, Institute of Chemistry for Life and Health Sciences, Laboratory for Inorganic Chemical Biology, 75005 Paris, France.
| | - Harley Betts
- Chimie ParisTech, PSL University, CNRS, Institute of Chemistry for Life and Health Sciences, Laboratory for Inorganic Chemical Biology, 75005 Paris, France.
| | - Sarah Keller
- Chimie ParisTech, PSL University, CNRS, Institute of Chemistry for Life and Health Sciences, Laboratory for Inorganic Chemical Biology, 75005 Paris, France.
| | - Kevin Cariou
- Chimie ParisTech, PSL University, CNRS, Institute of Chemistry for Life and Health Sciences, Laboratory for Inorganic Chemical Biology, 75005 Paris, France.
| | - Gilles Gasser
- Chimie ParisTech, PSL University, CNRS, Institute of Chemistry for Life and Health Sciences, Laboratory for Inorganic Chemical Biology, 75005 Paris, France.
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10
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Ahmad MU, Rafiq M, Zahra B, Islam M, Ashraf M, Al-Rashida M, Khan A, Hussain J, Shafiq Z, Al-Harrasi A. Synthesis of benzimidazole based hydrazones as non-sugar based α-glucosidase inhibitors: Structure activity relation and molecular docking. Drug Dev Res 2021; 82:1033-1043. [PMID: 33665884 DOI: 10.1002/ddr.21807] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2021] [Revised: 02/09/2021] [Accepted: 02/18/2021] [Indexed: 11/11/2022]
Abstract
In search for α-glucosidase inhibitors used in the treatment of diabetes mellitus, a series of unique benzimidazole based hydrazones derivatives were synthesized (5a-5p), which were then investigated for their in vitro α-glucosidase inhibitory potential. The compounds of interest were characterized by modern spectroscopic approaches including CHN, 1 HNM R, 13 CN MR and FTIR. The structure of compound 5n was distinctively authenticated through single crystal X-ray study. All compounds depicted potent enzyme inhibitory potential with IC50 values in the range of 2.25 ± 0.01 to 81.16 ± 0.12 μM except 5n that showed IC50 value of 182.75 ± 0.13 μM. A limited structure-activity correlation demonstrated that substitutions of isatin, aldehydes and ketone in hydrazones moiety had remarkable contribution in the overall activity and that was further supported by molecular docking studies carried out in elucidating the mechanism of binding interaction of these compounds in the catalytic site of α-glucosidase.
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Affiliation(s)
| | - Muhammad Rafiq
- Institute of Chemical Sciences, Bahauddin Zakariya University, Multan, Pakistan
| | - Bakhtawar Zahra
- Institute of Chemical Sciences, Bahauddin Zakariya University, Multan, Pakistan
| | - Muhamamd Islam
- Institute of Chemical Sciences, Bahauddin Zakariya University, Multan, Pakistan.,Jadeed Group of Companies, 53-C, Satellite Town, Chandni Chowk, Murree Road, Rawalpindi, Pakistan
| | - Muhammad Ashraf
- Department of Chemistry, The Islamia University of Bahawalpur, Bahawalpur, Pakistan
| | - Mariya Al-Rashida
- Department of Chemistry, Forman Christian College (A Chartered University), Ferozepur Road, Lahore, Pakistan
| | - Ajmal Khan
- Natural and Medical Sciences Research Center, University of Nizwa, Nizwa, Oman
| | - Javid Hussain
- Department of Biological Sciences and Chemistry, University of Nizwa, Nizwa, Oman
| | - Zahid Shafiq
- Institute of Chemical Sciences, Bahauddin Zakariya University, Multan, Pakistan
| | - Ahmed Al-Harrasi
- Natural and Medical Sciences Research Center, University of Nizwa, Nizwa, Oman
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Khelifa AB, Ezzayani K, Guergueb M, Loiseau F, Saint-Aman E, Nasri H. Synthesis, molecular structure, spectroscopic characterization and antibacterial activity of the pyrazine magnesium porphyrin coordination polymer. J Mol Struct 2021. [DOI: 10.1016/j.molstruc.2020.129508] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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12
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Microwave-Assisted Synthesis of Schiff Bases of Isoniazid and Evaluation of Their Anti-Proliferative and Antibacterial Activities. MOLBANK 2021. [DOI: 10.3390/m1189] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
Three new Schiff bases of isoniazid were synthesized using microwave-assisted synthesis and conventional condensation with aromatic aldehydes. Synthesized compounds were characterized using elemental analysis, IR, NMR, and Mass spectroscopy. Synthesized compounds were evaluated for antiproliferative activity against MCF-7 cell line. The IC50 values were from 125 to 276 µM. The compounds were also evaluated for antibacterial activity against Staphylococcus aureus and Escherichia coli. Results showed that the synthesized compounds produce significant antibacterial activity in vitro. Inhibition of compounds ranged from 13 to 18 mm.
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13
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Fazly Bazzaz BS, Darvishi Fork S, Ahmadi R, Khameneh B. Deep insights into urinary tract infections and effective natural remedies. AFRICAN JOURNAL OF UROLOGY 2021. [DOI: 10.1186/s12301-020-00111-z] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
Abstract
Background
Urinary tract infection (UTI) is a common occurrence in females, during pregnancy, and in peri- and postmenopausal women.
UTIs are associated with significant morbidity and mortality, and they affect the quality of life of the affected patients. Antibiotic therapy is an effective approach and reduces the duration of symptoms. Development of resistance, adverse effects of antibiotics, and other associated problems lead to establishing the research framework to find out the alternative approaches in controlling UTIs. Natural approaches have been extensively used for the management of various diseases to improve symptoms and also improve general health.
Main body
Different databases were employed to identify studies reporting on natural options including herbal medicines, vitamins, trace elementals, sugars, and probiotics without time limitations.
Conclusion
Herbal medicines can be effective at the first sign of the infection and also for short-term prophylaxis. Using vitamins, trace elementals, and/or sugars is an effective approach in preventing UTIs, and a combination of them with other antibacterial agents shows positive results. Probiotics have great potential for the threat of antibiotic over-usage and the prevalence of antibiotic-resistant microorganisms. This study may be of use in developing the efficient formulation of treatment of UTI.
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14
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Building-up novel coordination polymer with magnesium porphyrin: Synthesis, molecular structure, photophysical properties and spectroscopic characterization. Potential application as antibacterial agent. Inorganica Chim Acta 2021. [DOI: 10.1016/j.ica.2020.119960] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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15
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Parvarinezhad S, Salehi M. Synthesis, characterization, crystal structures, Hirshfeld surface analysis and DFT computational studies of new Schiff Bases derived from Phenylhydrazine. J Mol Struct 2020. [DOI: 10.1016/j.molstruc.2020.128780] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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16
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Wang Y, Khan MR, Niu X, Zhang W, Li Y, Li B, Hao Y, Li J, Liu Z. Synthesis, Structures, and Antibacterial Activities of Four Similar 1D Metal-organic Polymers with Different Metal Ions. Z Anorg Allg Chem 2020. [DOI: 10.1002/zaac.202000093] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Yufei Wang
- The College of Chemical Engineering and Food Sciences; Zhengzhou Institute of Technology; 450044 Zhengzhou Henan P. R. China
- College of Chemistry and Green Catalysis Center; Zhengzhou University; 450044 Zhengzhou Henan P. R. China
| | - Misbha Rafiq Khan
- College of Chemistry and Green Catalysis Center; Zhengzhou University; 450044 Zhengzhou Henan P. R. China
| | - Xiaoge Niu
- College of Chemistry and Green Catalysis Center; Zhengzhou University; 450044 Zhengzhou Henan P. R. China
| | - Wenjing Zhang
- College of Chemistry and Green Catalysis Center; Zhengzhou University; 450044 Zhengzhou Henan P. R. China
| | - Yulin Li
- The College of Chemical Engineering and Food Sciences; Zhengzhou Institute of Technology; 450044 Zhengzhou Henan P. R. China
| | - Bohan Li
- College of Chemistry and Green Catalysis Center; Zhengzhou University; 450044 Zhengzhou Henan P. R. China
| | - Yaping Hao
- College of Chemistry and Green Catalysis Center; Zhengzhou University; 450044 Zhengzhou Henan P. R. China
| | - Jinpeng Li
- College of Chemistry and Green Catalysis Center; Zhengzhou University; 450044 Zhengzhou Henan P. R. China
| | - Zhongyi Liu
- College of Chemistry and Green Catalysis Center; Zhengzhou University; 450044 Zhengzhou Henan P. R. China
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Revathi N, Sankarganesh M, Dhaveethu Raja J, Vinoth Kumar GG, Sakthivel A, Rajasekaran R. Bio-active mixed ligand Cu(II) and Zn(II) complexes of pyrimidine derivative Schiff base: DFT calculation, antimicrobial, antioxidant, DNA binding, anticancer and molecular docking studies. J Biomol Struct Dyn 2020; 39:3012-3024. [DOI: 10.1080/07391102.2020.1759454] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Nagaraj Revathi
- Department of Chemistry, Ramco Institute of Technology, Virudhunagar, Tamil Nadu, India
- Department of Chemistry, Manonmanium Sundaranar University, Tirunelveli, Tamil Nadu, India
| | - Murugesan Sankarganesh
- Department of Chemistry, K. Ramakrishnan College of Technology, Trichy, Tamil Nadu, India
| | | | | | - Arumugam Sakthivel
- Department of Chemistry, Mepco Schlenk Engineering College, Sivakasi, Tamil Nadu, India
| | - Ramalingam Rajasekaran
- Department of Biomedical Sciences, School of Biosciences and Technology, VIT University, Vellore, Tamil Nadu, India
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18
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Synthesis, characterization, quantum chemical calculations and anticancer activity of a Schiff base NNOO chelate ligand and Pd(II) complex. PLoS One 2020; 15:e0231147. [PMID: 32287324 PMCID: PMC7156068 DOI: 10.1371/journal.pone.0231147] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2019] [Accepted: 03/17/2020] [Indexed: 11/19/2022] Open
Abstract
This paper reports the synthesis, characterization, anticancer screening and quantum chemical calculation of a tetradentate Schiff base 2,2'-((1E,1'E)-((2,2-dimethylpropane-1,3-diyl)bis- (azanylylidene))bis(methanylylidene))bis(4-fluorophenol) (L2F) and its Pd (II) complex (PdL2F). The compounds were characterized via UV-Visible, NMR, IR spectroscopy and single crystal x-ray diffraction. Density Functional Theory (DFT) and time-dependent DFT calculations in gas and solvent phases were carried out using B3LYP, B3P86, CAM-B3LYP and PBE0 hybrid functionals combined with LanL2DZ basis set. Complexation of L2F to form PdL2F was observed to cause a bathochromic shift of the maximum absorption bands of n-π* from 327 to 410 nm; an upfield shift for δ (HC = N) from 8.30 to 7.96 ppm and a decreased wavenumber for ν(C = N) from 1637 to 1616 cm-1. Overall, the UV-Vis, NMR and IR spectral data are relatively well reproduced through DFT and TD-DFT methods. L2F and PdL2F showed IC50 of 90.00 and 4.10 μg/mL, respectively, against human colorectal carcinoma (HCT116) cell lines, signifying increased anticancer activity upon complexation with Pd (II).
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19
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Kondori T, Shahraki O, Akbarzadeh-T N, Aramesh-Boroujeni Z. Two novel bipyridine-based cobalt (II) complexes: synthesis, characterization, molecular docking, DNA-binding and biological evaluation. J Biomol Struct Dyn 2020; 39:595-609. [DOI: 10.1080/07391102.2020.1713893] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Affiliation(s)
- Tahere Kondori
- Department of Chemistry, University of Sistan and Baluchestan, Zahedan, Iran
| | - Omolbanin Shahraki
- Pharmacology Research Center, Zahedan University of Medical Sciences, Zahedan, Iran
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20
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Syntheses, crystal structures, antibacterial activities of Cu(II) and Ni(II) complexes based on terpyridine polycarboxylic acid ligand. J Mol Struct 2019. [DOI: 10.1016/j.molstruc.2019.02.072] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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Alpaslan G, Macit M, Özdemir N, Gökce H. Synthesis, spectroscopic properties and DFT studies of copper(II) complex of (E)-1-((2,4-dichlorophenylimino)methyl)naphthalen-2-ol. Inorganica Chim Acta 2019. [DOI: 10.1016/j.ica.2018.09.052] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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22
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Ali B, Mohammed Khan K, Arshia, Kanwal, Hussain S, Hussain S, Ashraf M, Riaz M, Wadood A, Perveen S. Synthetic nicotinic/isonicotinic thiosemicarbazides: In vitro urease inhibitory activities and molecular docking studies. Bioorg Chem 2018; 79:34-45. [DOI: 10.1016/j.bioorg.2018.04.004] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2018] [Revised: 04/12/2018] [Accepted: 04/12/2018] [Indexed: 11/28/2022]
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23
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Hao Y, Yue C, Jin B, Lv Y, Zhang Q, Li J, Liu Z, Hou H. Syntheses, structures, luminescent properties and antibacterial activities of seven polymers based on an asymmetric triazole dicarboxylate ligand. Polyhedron 2018. [DOI: 10.1016/j.poly.2017.11.006] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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24
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Stereoselective synthesis and spectral studies of some benzotriazolylacetyl hydrazones of 3–alkyl–2,6–diarylpiperidin–4–ones. J Mol Struct 2017. [DOI: 10.1016/j.molstruc.2017.09.010] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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25
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Tajuddin AM, Anouar EH, Ramasamy K, Yamin BM, Alharthi AI, Bahron H. DFT analysis and bioactivity of 2-(( E )-(4-methoxybenzylimino)methyl)phenol and its Ni(II) and Pd(II) complexes. ARAB J CHEM 2017. [DOI: 10.1016/j.arabjc.2016.11.005] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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26
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Abdel-Rahman LH, El-Khatib RM, Nassr LA, Abu-Dief AM. DNA binding ability mode, spectroscopic studies, hydrophobicity, and in vitro antibacterial evaluation of some new Fe(II) complexes bearing ONO donors amino acid Schiff bases. ARAB J CHEM 2017. [DOI: 10.1016/j.arabjc.2013.07.010] [Citation(s) in RCA: 39] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023] Open
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27
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Fekri R, Salehi M, Asadi A, Kubicki M. DNA/BSA interaction, bio-activity, molecular docking simulation study and electrochemical properties of hydrazone Schiff base derived Cu(II)/Ni(II) metal complexes: Influence of the nuclearity and metal ions. Polyhedron 2017. [DOI: 10.1016/j.poly.2017.02.047] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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28
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Abdel-Rahman LH, Abu-Dief AM, Ismail NM, Ismael M. Synthesis, characterization, and biological activity of new mixed ligand transition metal complexes of glutamine, glutaric, and glutamic acid with nitrogen based ligands. INORG NANO-MET CHEM 2016. [DOI: 10.1080/15533174.2015.1137057] [Citation(s) in RCA: 35] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
| | - Ahmed M. Abu-Dief
- Chemistry Department, Faculty of Science, Sohag University, Sohag, Egypt
- Departamento de Quimica Organica e Inorganica, Faculad de Quimica, Universdad de Oviedo, Oviedo, Spain
| | - Nabawia M. Ismail
- Chemistry Department, Faculty of Science, Sohag University, Sohag, Egypt
| | - Mohamed Ismael
- Chemistry Department, Faculty of Science, Sohag University, Sohag, Egypt
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PTA (H3PO4·12WO3·xH2O): An eco-friendly catalyst for the synthesis of new Schiff-bases containing benzimidazole moiety. ARAB J CHEM 2016. [DOI: 10.1016/j.arabjc.2011.07.030] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
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30
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Dalecki AG, Malalasekera AP, Schaaf K, Kutsch O, Bossmann SH, Wolschendorf F. Combinatorial phenotypic screen uncovers unrecognized family of extended thiourea inhibitors with copper-dependent anti-staphylococcal activity. Metallomics 2016; 8:412-21. [PMID: 26935206 PMCID: PMC4838501 DOI: 10.1039/c6mt00003g] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
The continuous rise of multi-drug resistant pathogenic bacteria has become a significant challenge for the health care system. In particular, novel drugs to treat infections of methicillin-resistant Staphylococcus aureus strains (MRSA) are needed, but traditional drug discovery campaigns have largely failed to deliver clinically suitable antibiotics. More than simply new drugs, new drug discovery approaches are needed to combat bacterial resistance. The recently described phenomenon of copper-dependent inhibitors has galvanized research exploring the use of metal-coordinating molecules to harness copper's natural antibacterial properties for therapeutic purposes. Here, we describe the results of the first concerted screening effort to identify copper-dependent inhibitors of Staphylococcus aureus. A standard library of 10 000 compounds was assayed for anti-staphylococcal activity, with hits defined as those compounds with a strict copper-dependent inhibitory activity. A total of 53 copper-dependent hit molecules were uncovered, similar to the copper independent hit rate of a traditionally executed campaign conducted in parallel on the same library. Most prominent was a hit family with an extended thiourea core structure, termed the NNSN motif. This motif resulted in copper-dependent and copper-specific S. aureus inhibition, while simultaneously being well tolerated by eukaryotic cells. Importantly, we could demonstrate that copper binding by the NNSN motif is highly unusual and likely responsible for the promising biological qualities of these compounds. A subsequent chemoinformatic meta-analysis of the ChEMBL chemical database confirmed the NNSNs as an unrecognized staphylococcal inhibitor, despite the family's presence in many chemical screening libraries. Thus, our copper-biased screen has proven able to discover inhibitors within previously screened libraries, offering a mechanism to reinvigorate exhausted molecular collections.
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Affiliation(s)
- Alex G Dalecki
- Department of Medicine, University of Alabama at Birmingham, 845 19th Street S, Birmingham, AL 35294, USA.
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31
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Synthesis, crystal structure, spectroscopic, thermal analyses and biological properties of novel F-block coordination polymers containing 2,2′-thiodiacetic acid and piperazine. Inorganica Chim Acta 2016. [DOI: 10.1016/j.ica.2016.01.005] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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32
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Liu HY. Synthesis, Structural Characterization, and Antibacterial Activity of Cu(II) and Zn(II) Complexes With Tetradentate Schiff Bases. ACTA ACUST UNITED AC 2015. [DOI: 10.1080/15533174.2014.963243] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Affiliation(s)
- Huan-Yu Liu
- School of Chemistry and Chemical Engineering, Guangdong Pharmaceutical University, Zhongshan, P. R. China
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Patel YS. Studies on metal complexes of 2-((8-hydroxyquinolin-5-yl)methylene)benzo[b]thiophen-3(2H)-one 1,1-dioxide. RESEARCH ON CHEMICAL INTERMEDIATES 2015. [DOI: 10.1007/s11164-014-1764-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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34
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Yıldız M, Karpuz Ö, Zeyrek CT, Boyacıoğlu B, Dal H, Demir N, Yıldırım N, Ünver H. Synthesis, biological activity, DNA binding and anion sensors, molecular structure and quantum chemical studies of a novel bidentate Schiff base derived from 3,5-bis(triflouromethyl)aniline and salicylaldehyde. J Mol Struct 2015. [DOI: 10.1016/j.molstruc.2015.03.047] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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35
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Packianathan S, Arun T, Raman N. DNA interaction and efficient antimicrobial activities of 4N chelating metal complexes. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY 2015; 148:160-167. [DOI: 10.1016/j.jphotobiol.2015.04.006] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/06/2015] [Revised: 03/30/2015] [Accepted: 04/12/2015] [Indexed: 01/22/2023]
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36
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Amirnasr M, Sadeghi Erami R, Mereiter K, Schenk Joß K, Meghdadi S, Abbasi S. Syntheses, characterizations, X-ray crystal structures, and antibacterial activities of Co(II), Ni(II), and Zn(II) complexes of the Schiff base derived from 5-nitro-2-hydroxybenzaldehyde and benzylamine. J COORD CHEM 2015. [DOI: 10.1080/00958972.2014.996144] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Affiliation(s)
- Mehdi Amirnasr
- Department of Chemistry, Isfahan University of Technology, Isfahan, Iran
| | | | - Kurt Mereiter
- Faculty of Chemistry, Vienna University of Technology, Vienna, Austria
| | - Kurt Schenk Joß
- CCC-IPSB, École Polytechnique Fédérale de Lausanne, Lausanne, Switzerland
| | - Soraia Meghdadi
- Department of Chemistry, Isfahan University of Technology, Isfahan, Iran
| | - Soheila Abbasi
- Department of Biological Sciences, University of Isfahan, Isfahan, Iran
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37
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Patel YS. Studies on oligomeric metal complexes derived from 2,5-bis((1 H-1,2,4-triazol-3-yl)carbamoyl)terephthalic acid. Des Monomers Polym 2014. [DOI: 10.1080/15685551.2014.918016] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022] Open
Affiliation(s)
- Yogesh S. Patel
- Chemistry Department, Government Science College, Gandhinagar 382015, Gujarat, India
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Studies on Oligomer Metal Complexes Derived from Bisamic Acid of Pyromellitic Dianhydride and 4-Bromoaniline. INTERNATIONAL SCHOLARLY RESEARCH NOTICES 2014; 2014:516274. [PMID: 27379295 PMCID: PMC4897237 DOI: 10.1155/2014/516274] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/25/2014] [Accepted: 09/19/2014] [Indexed: 11/18/2022]
Abstract
Novel oligomer metal complexes (2a–f) of the ligand 2,5-bis((4-bromophenyl)carbamoyl) terephthalic acid (1) were prepared using transition metal salts and characterized by various spectroscopic techniques. The geometry of oligomer metal complexes was carried out by electronic spectral analysis and magnetic measurement studies. Polymeric properties have also been carried out. Ligand was synthesized using pyromellitic dianhydride and 4-bromoaniline. It was duly characterized. All novel synthesized compounds 1 and 2a–f were evaluated for their antibacterial and antifungal activity. The results showed significantly higher antibacterial and antifungal activity of oligomer metal complexes compared to the ligand.
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Arulmani R, Sankaran KR. Synthesis, spectral, SHG efficiency and computational studies of some newly synthesized unsymmetrical azines of 4-biphenylcarboxaldehyde. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2014; 129:491-498. [PMID: 24755639 DOI: 10.1016/j.saa.2014.03.093] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/26/2013] [Revised: 02/28/2014] [Accepted: 03/18/2014] [Indexed: 06/03/2023]
Abstract
A series of novel unsymmetrical azines 2-8 are prepared and characterized by FT-IR, (1)H, (13)C NMR, Mass and UV spectral studies. The Gaussian-03 B3LYP/6-311+G(d,p) calculations on these azines are used to evaluate the heat of formation of the different conformers, identify the stable conformation, to determine dipole moment (μ), polarizability (α0), first hyperpolarizability (βtot), selected geometrical parameters, MEP surface, frontier molecular orbital energies (HOMO-LUMO) and their energy gap. The μ, α0, βtot values clearly depict that the unsymmetrical azine 8 is found to have a good NLO property compared to other azines 1-7. The SHG measurement of unsymmetrical azine 8 was performed by Kurtz and Perry powder method and the results indicated that the azine 8 is having comparable efficiency as that of potassium dihydrogen phosphate (KDP) crystal. The natural bond orbital (NBO) analysis of the unsymmetrical azines 2-8 are also made using B3LYP/6-31G(d,p) basis set.
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Affiliation(s)
- R Arulmani
- Department of Chemistry, Annamalai University, Annamalainagar 608 002, Tamil Nadu, India
| | - K R Sankaran
- Department of Chemistry, Annamalai University, Annamalainagar 608 002, Tamil Nadu, India.
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40
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Anouar EH. A Quantum Chemical and Statistical Study of Phenolic Schiff Bases with Antioxidant Activity against DPPH Free Radical. Antioxidants (Basel) 2014; 3:309-22. [PMID: 26784873 PMCID: PMC4665484 DOI: 10.3390/antiox3020309] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2014] [Revised: 03/24/2014] [Accepted: 04/10/2014] [Indexed: 11/17/2022] Open
Abstract
Phenolic Schiff bases are known as powerful antioxidants. To select the electronic, 2D and 3D descriptors responsible for the free radical scavenging ability of a series of 30 phenolic Schiff bases, a set of molecular descriptors were calculated by using B3P86 (Becke's three parameter hybrid functional with Perdew 86 correlation functional) combined with 6-31 + G(d,p) basis set (i.e., at the B3P86/6-31 + G(d,p) level of theory). The chemometric methods, simple and multiple linear regressions (SLR and MLR), principal component analysis (PCA) and hierarchical cluster analysis (HCA) were employed to reduce the dimensionality and to investigate the relationship between the calculated descriptors and the antioxidant activity. The results showed that the antioxidant activity mainly depends on the first and second bond dissociation enthalpies of phenolic hydroxyl groups, the dipole moment and the hydrophobicity descriptors. The antioxidant activity is inversely proportional to the main descriptors. The selected descriptors discriminate the Schiff bases into active and inactive antioxidants.
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Affiliation(s)
- El Hassane Anouar
- Atta-ur-Rahman Institute for Natural Products Discovery, Level 9, FF3, Universiti Teknologi MARA, Puncak Alam Campus, Bandar Puncak Alam, Selangor Darul Ehsan 42300, Malaysia.
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41
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Synthesis, characterization and in vitro cytotoxic properties of new silver(I) complexes of two novel Schiff bases derived from thiazole and pyrazine. Polyhedron 2014. [DOI: 10.1016/j.poly.2014.01.014] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
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42
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Abdel-Rahman LH, El-Khatib RM, Nassr LAE, Abu-Dief AM, Ismael M, Seleem AA. Metal based pharmacologically active agents: synthesis, structural characterization, molecular modeling, CT-DNA binding studies and in vitro antimicrobial screening of iron(II) bromosalicylidene amino acid chelates. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2014; 117:366-378. [PMID: 24001978 DOI: 10.1016/j.saa.2013.07.056] [Citation(s) in RCA: 137] [Impact Index Per Article: 13.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/19/2013] [Revised: 07/20/2013] [Accepted: 07/26/2013] [Indexed: 06/02/2023]
Abstract
In recent years, great interest has been focused on Fe(II) Schiff base amino acid complexes as cytotoxic and antitumor drugs. Thus a series of new iron(II) complexes based on Schiff bases amino acids ligands have been designed and synthesized from condensation of 5-bromosalicylaldehyde (bs) and α-amino acids (L-alanine (ala), L-phenylalanine (phala), L-aspartic acid (aspa), L-histidine (his) and L-arginine (arg)). The structure of the investigated iron(II) complexes was elucidated using elemental analyses, infrared, ultraviolet-visible, thermogravimetric analysis, as well as conductivity and magnetic susceptibility measurements. Moreover, the stoichiometry and the stability constants of the prepared complexes have been determined spectrophotometrically. The results suggest that 5-bromosalicylaldehyde amino acid Schiff bases (bs:aa) behave as dibasic tridentate ONO ligands and coordinate to Fe(II) in octahedral geometry according to the general formula [Fe(bs:aa)2]·nH2O. The conductivity values between 37 and 64 ohm(-1) mol(-1) cm(2) in ethanol imply the presence of nonelectrolyte species. The structure of the complexes was validated using quantum mechanics calculations based on accurate DFT methods. Geometry optimization of the Fe-Schiff base amino acid complexes showed that all complexes had octahedral coordination. In addition, the interaction of these complexes with (CT-DNA) was investigated at pH=7.2, by using UV-vis absorption, viscosity and agarose gel electrophoresis measurements. Results indicated that the investigated complexes strongly bind to calf thymus DNA via intercalative mode and showed a different DNA binding according to the sequence: bsari>bshi>bsali>bsasi>bsphali. Moreover, the prepared compounds are screened for their in vitro antibacterial and antifungal activity against three types of bacteria, Escherichia coli, Pseudomonas aeruginosa and Bacillus cereus and three types of anti fungal cultures, Penicillium purpurogenium, Aspergillus flavus and Trichotheium rosium. The results of these studies indicated that the metal complexes exhibit a stronger antibacterial and antifungal efficiency than their corresponding Schiff base amino acid ligands.
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Patel YS, Patel PN, Patel HS. Studies on Coordination Polymers Derived from 2,5-Bis (naphthalen-1-ylcarbamoyl)terephthalicacid. JOURNAL OF MACROMOLECULAR SCIENCE PART A-PURE AND APPLIED CHEMISTRY 2014. [DOI: 10.1080/10601325.2014.864922] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Synthesis, characterization, DNA interaction, thermal and in vitro biological activity investigation of some Ni(II)-Isatin bishydrazone complexes. JOURNAL OF THE IRANIAN CHEMICAL SOCIETY 2013. [DOI: 10.1007/s13738-013-0383-5] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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45
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Anouar EH, Raweh S, Bayach I, Taha M, Baharudin MS, Di Meo F, Hasan MH, Adam A, Ismail NH, Weber JFF, Trouillas P. Antioxidant properties of phenolic Schiff bases: structure-activity relationship and mechanism of action. J Comput Aided Mol Des 2013; 27:951-64. [PMID: 24243063 DOI: 10.1007/s10822-013-9692-0] [Citation(s) in RCA: 65] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2013] [Accepted: 11/09/2013] [Indexed: 11/27/2022]
Abstract
Phenolic Schiff bases are known for their diverse biological activities and ability to scavenge free radicals. To elucidate (1) the structure-antioxidant activity relationship of a series of thirty synthetic derivatives of 2-methoxybezohydrazide phenolic Schiff bases and (2) to determine the major mechanism involved in free radical scavenging, we used density functional theory calculations (B3P86/6-31+(d,p)) within polarizable continuum model. The results showed the importance of the bond dissociation enthalpies (BDEs) related to the first and second (BDEd) hydrogen atom transfer (intrinsic parameters) for rationalizing the antioxidant activity. In addition to the number of OH groups, the presence of a bromine substituent plays an interesting role in modulating the antioxidant activity. Theoretical thermodynamic and kinetic studies demonstrated that the free radical scavenging by these Schiff bases mainly proceeds through proton-coupled electron transfer rather than sequential proton loss electron transfer, the latter mechanism being only feasible at relatively high pH.
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Affiliation(s)
- El Hassane Anouar
- Atta-ur-Rahman Institute for Natural Product Discovery (RiND), Universiti Teknologi MARA, Kampus Puncak Alam, 42300 Bandar Puncak Alam, Shah Alam, Selangor DE, Malaysia,
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DNA interactions and promotion in antibacterial activities of the norfloxacin drug due to formation of mixed-ligand copper(II) complexes. MONATSHEFTE FUR CHEMIE 2013. [DOI: 10.1007/s00706-013-1086-4] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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47
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Lin XS, Li XC, Sang YL. Synthesis and crystal structures of two zinc(II) complexes derived from N-isopropyl-N′-[1-(2-methoxyphenyl)methylidene]ethane-1,2-diamine. RUSS J COORD CHEM+ 2013. [DOI: 10.1134/s1070328413060067] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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48
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Abdel-Rahman LH, El-Khatib RM, Nassr LAE, Abu-Dief AM, Lashin FED. Design, characterization, teratogenicity testing, antibacterial, antifungal and DNA interaction of few high spin Fe(II) Schiff base amino acid complexes. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2013; 111:266-276. [PMID: 23665616 DOI: 10.1016/j.saa.2013.03.061] [Citation(s) in RCA: 102] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/09/2013] [Revised: 03/12/2013] [Accepted: 03/13/2013] [Indexed: 06/02/2023]
Abstract
In this study, new Fe(II) Schiff base amino acid chelates derived from the condensation of o-hydroxynaphthaldehyde with L-alanine, L-phenylalanine, L-aspartic acid, L-histidine and L-arginine were synthesized and characterized via elemental, thermogravimetric analysis, molar conductance, IR, electronic, mass spectra and magnetic moment measurements. The stoichiometry and the stability constants of the complexes were determined spectrophotometrically. Correlation of all spectroscopic data suggested that Schiff bases ligands exhibited tridentate with ONO sites coordinating to the metal ions via protonated phenolic-OH, azomethine-N and carboxylate-O with the general formulae [Fe(HL)2]·nH2O. But in case of L-histidine, the ligand acts as tetradentate via deprotonated phenolic-OH, azomethine-N, carboxylate-O and N-imidazole ring ([FeL(H2O)2]·2H2O), where HL=mono anion and L=dianion of the ligand. The structure of the prepared complexes is suggested to be octahedral. The prepared complexes were tested for their teratogenicity on chick embryos and found to be safe until a concentration of 100 μg/egg with full embryos formation. Moreover, the interaction between CT-DNA and the investigated complexes were followed by spectrophotometric and viscosity measurements. It was found that, the prepared complexes bind to DNA via classical intercalative mode and showed a different DNA activity with the sequence: nhi>nari>nali>nasi>nphali. Furthermore, the free ligands and their complexes are screened for their in vitro antibacterial and antifungal activity against three types of bacteria, Escherichia coli, Pseudomonas aeruginosa and Bacillus cereus and three types of anti fungal cultures, Penicillium purpurogenium, Aspergillus flavus and Trichotheium rosium in order to assess their antimicrobial potential. The results show that the metal complexes are more reactive with respect to their corresponding Schiff base amino acid ligands.
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Taha M, Baharudin MS, Ismail NH, Khan KM, Jaafar FM, Samreen, Siddiqui S, Choudhary MI. Synthesis of 2-methoxybenzoylhydrazone and evaluation of their antileishmanial activity. Bioorg Med Chem Lett 2013; 23:3463-6. [DOI: 10.1016/j.bmcl.2013.03.051] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2013] [Revised: 03/11/2013] [Accepted: 03/14/2013] [Indexed: 10/27/2022]
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50
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Patel MN, Bhatt BS, Dosi PA. Study of SOD mimic and nucleic acid interaction activity exerted by enrofloxacin-based copper(II) complexes. Chem Biodivers 2012; 9:2810-24. [PMID: 23255450 DOI: 10.1002/cbdv.201100372] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2011] [Indexed: 11/07/2022]
Abstract
Five new copper(II) complexes of type [Cu(erx)(L)Cl] (erx, enrofloxacin; thiophene-2-carbaldehyde (L(1) ); pyridine-2-carbaldehyde (L(2) ); 2,2'-dipyridylamine (L(3) ); 4,5-diazafluoren-9-one (L(4) ); bis(3,5-dimethyl-1-pyrazolyl)methane (L(5) )) have been synthesized and characterized by elemental analysis, reflectance, IR, and FAB-MS. Complexes have been investigated for their interaction with calf thymus (CT) DNA utilizing the absorption-titration method, viscometric and DNA thermal denaturation studies. The cleavage reaction on pUC19 DNA has been monitored by agarose gel electrophoresis. The results indicated that the Cu(II) complexes can more effectively promote the cleavage of plasmid DNA at physiological pH and superoxide dismutase. The (SOD) activity of the complexes has been evaluated by the nitroblue tetrazolium assay, and the complexes catalyzed the dismutation of superoxide at pH 7.8 with IC(50) values of 0.35-1.25 μM. The complexes have also been screened for their antibacterial activity against five pathogenic bacteria.
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Affiliation(s)
- Mohan N Patel
- Department of Chemistry, Sardar Patel University, Vallabh Vidyanagar - 388 120, Gujarat, India.
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