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Bushkov NS, Rumyantsev AV, Zhizhin AA, Strelkova TV, Novikov RA, Gutsul EI, Takazova RU, Kitaeva DK, Ustynyuk NA, Zhizhko PA, Zarubin DN. Tungsten Oxide Dispersed on Silica as Robust and Readily Available Oxo/Imido Heterometathesis Catalyst. Chempluschem 2024; 89:e202400029. [PMID: 38589286 DOI: 10.1002/cplu.202400029] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2024] [Revised: 04/04/2024] [Accepted: 04/08/2024] [Indexed: 04/10/2024]
Abstract
Continuing our investigation of catalytic oxo/imido heterometathesis as novel water-free method for C=N bond construction, we report here the application of classical transition metal oxides dispersed on silica (MOx/SiO2, M=V, Mo, W) as cheap, robust and readily available alternative to the catalysts prepared via Surface Organometallic Chemistry (SOMC). The oxide materials demonstrated activity in heterometathetical imidation of ketones, WO3/SiO2 being the most efficient. We also describe a new well-defined supported W imido complex (≡SiO)W(=NMes)2(Me2Pyr) (Mes=2,4,6-Me3C6H2, Me2Pyr=2,5-dimethylpyrrolyl) and characterize it with SOMC protocols, which allowed us to identify the position of W on the oxo/imido heterometathesis activity scale (Mo
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Affiliation(s)
- Nikolai S Bushkov
- A. N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, Vavilov str., 28, 119334, Moscow, Russia
| | - Andrey V Rumyantsev
- A. N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, Vavilov str., 28, 119334, Moscow, Russia
- Chemistry Department, Moscow State University, Vorob'evy Gory, 1, 119992, Moscow, Russia
| | - Anton A Zhizhin
- A. N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, Vavilov str., 28, 119334, Moscow, Russia
| | - Tatyana V Strelkova
- A. N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, Vavilov str., 28, 119334, Moscow, Russia
| | - Roman A Novikov
- N. D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, Leninsky prosp., 47, 119991, Moscow, Russia
| | - Evgenii I Gutsul
- A. N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, Vavilov str., 28, 119334, Moscow, Russia
| | - Rina U Takazova
- A. N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, Vavilov str., 28, 119334, Moscow, Russia
| | - Dinara K Kitaeva
- A. N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, Vavilov str., 28, 119334, Moscow, Russia
| | - Nikolai A Ustynyuk
- A. N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, Vavilov str., 28, 119334, Moscow, Russia
| | - Pavel A Zhizhko
- A. N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, Vavilov str., 28, 119334, Moscow, Russia
| | - Dmitry N Zarubin
- A. N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, Vavilov str., 28, 119334, Moscow, Russia
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2
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Karakullukçu NT, Muğlu H, Yakan H, Yılmaz VM, Marah S, İnce İA. Kinetic Insights into the Antioxidant Effect of Isatin-Thiosemicarbazone in Biodiesel Blends. Antioxidants (Basel) 2024; 13:819. [PMID: 39061888 PMCID: PMC11273829 DOI: 10.3390/antiox13070819] [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: 06/03/2024] [Revised: 06/25/2024] [Accepted: 06/27/2024] [Indexed: 07/28/2024] Open
Abstract
Biodiesel has several drawbacks, such as being prone to oxidation, having reduced stability, and having limited storage time. Antioxidants compatible with biodiesel are being used to address its drawbacks. Utilizing antioxidants effectively improves the quality of biodiesel. Enhancing the quality of biodiesel for use as a clean energy source benefits both the global economy and ecology. Therefore, we believe that our work will contribute to the advancement of the biodiesel industry worldwide. This study used blends consisting of 20% biodiesel and 80% diesel fuel. Isatin-thiosemicarbazones were tested as additives in blends at a concentration of 3000 parts per million (ppm) using an oxifast device and were compared with the chemical antioxidant Trolox. FT-IR, DSC, and TGA were used to characterize these samples. DSC measured sample crystallization temperatures (Tc). Samples with antioxidants showed decreased values compared to the non-antioxidant diesel sample D100. Several DSC tests were conducted to determine the antioxidant strengths of various samples. The results show that the FT-IR spectrum's antioxidant effect regions grow clearer with antioxidants. The extra antioxidant is effective. Biodiesel's oxidative stability improves with isatin-thiosemicarbazones at varying concentrations. The kinetics of thermal decomposition of isatin-thiosemicarbazones under non-isothermal conditions were determined using the Kissinger, Ozawa, and Boswell techniques. The activation energies of compounds 1 and 2 were calculated as 137-147 kJ mol-1 and 173-183 kJ mol-1, respectively.
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Affiliation(s)
- Nalan Türköz Karakullukçu
- Karadeniz Advanced Technology Research and Application Center, Ondokuz Mayis University, Atakum, 55200 Samsun, Turkey
| | - Halit Muğlu
- Department of Chemistry, Faculty Science, Kastamonu University, 37150 Kastamonu, Turkey;
| | - Hasan Yakan
- Department of Chemistry Education, Faculty of Education, Ondokuz Mayis University, Atakum, 55200 Samsun, Turkey;
| | | | - Sarmad Marah
- Department of Chemistry, Faculty of Science, Ondokuz Mayis University, Atakum, 55200 Samsun, Turkey;
| | - İkbal Agah İnce
- Department of Medical Microbiology, School of Medicine, Acibadem Mehmet, Ali Aydinlar University, Atasehir, 34752 İstanbul, Turkey;
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3
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El Batouti M, El-Mossalamy E, Al-Harby N, Fetouh H. Synthesis, characterization and evaluation of new anti-inflammatory iron charge transfer complexes. Heliyon 2024; 10:e32448. [PMID: 38975223 PMCID: PMC11226803 DOI: 10.1016/j.heliyon.2024.e32448] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2024] [Revised: 06/01/2024] [Accepted: 06/04/2024] [Indexed: 07/09/2024] Open
Abstract
The novelty and the essential purpose of this research is the preparation of new anti-inflammatory iron complexes in water green solvent using critical micelle concentration of anionic surface active agent (SAA). Three new anti-inflammatory iron complexes have been prepared. Thiophene-electron (es) donor (D) Schiff base (2-(2-OH-benzylidene)-amino)-4, 5, 6, 7-tetrah ydrobenzo[b] thiophene-3-carbonitrile) has been prepared. Molecular structures of all samples were confirmed based on CNH analysis, 1H NMR and 13C NMR spectra. The molecular structure of Schiff base is further confirmed by computational chemistry using the DFT-B3LYP method, 6-31G (d) basis set. Observed and simulated 1H NMR, UV-Vis. IR/Raman spectra confirmed the molecular structure of D. This Schiff base is intercalated to ferric chloride (FeCl3) giving pure iron charge transfer complex (CTCs). In vitro and kinetic studies confirmed Fe-CTC complexes had (concentration-dependent) potent antimicrobial-, good anti-inflammatory activities. Free radical scavenging activity nitrous oxide (NO.) of Fe (III)CTCs is attributed to geometry Fe(III) ions as distorted octahedral (either monoclinic or triclinic single crystals) via functional groups (-C]N-O, NH2). Elemental analysis and EDS spectra confirmed strong binding between iron and hetero atoms (N, S, O) of D molecules.
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Affiliation(s)
| | - E.H. El-Mossalamy
- Chemistry Department, Faculty of Science, Benha University, Benha, Egypt
| | - Nouf Al-Harby
- Department of Chemistry, College of Science, Qassim University, Buraydah, 51452, Saudi Arabia
| | - H.A. Fetouh
- Chemistry Department, Faculty of Science, Alexandria University, Egypt
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4
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Sevimli E, Seyhan G, Akkaya D, Sarı S, Barut B, Köksoy B. Effective α-glycosidase inhibitors based on polyphenolic benzothiazole heterocycles. Bioorg Chem 2024; 147:107366. [PMID: 38636435 DOI: 10.1016/j.bioorg.2024.107366] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2024] [Revised: 04/03/2024] [Accepted: 04/10/2024] [Indexed: 04/20/2024]
Abstract
α-Glycosidase inhibition is one of the main approaches to treat Diabetes mellitus. Polyphenolic moieties are known to be responsible for yielding exhibit potent α-glycosidase inhibitory effects. In addition, compounds containing benzothiazole and Schiff base functionalities were previously reported to show α-glycosidase inhibition. In this paper, the synthesis of seven new phloroglucinol-containing benzothiazole Schiff base derivatives through the reaction of 6-substituted-2-aminobenzothiazole compounds with 2,4,6-trihydroxybenzaldehyde using acetic acid as a catalyst was reported. The synthesized compounds were characterized using spectroscopic methods such as FT-IR, 1H NMR, 13C NMR, and elemental analysis. The synthesized compounds were evaluated for their inhibitory effects on α-glycosidase, compounds 3f and 3g were found to show significant inhibitory properties when compared to the positive control. The IC50 values of 3f and 3g were calculated as 24.05 ± 2.28 and 18.51 ± 1.19 µM, respectively. Kinetic studies revealed that compounds 3f and 3g exhibited uncompetitive mode of inhibition against α-glycosidase. Molecular modeling predicted druglikeness for the title compounds and underpinned the importance of phloroglucinol hydroxyls for interacting with the key residues of α-glycosidase.
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Affiliation(s)
- Esra Sevimli
- Bursa Technical University, Department of Chemistry, Bursa, Turkiye
| | - Gökçe Seyhan
- Karadeniz Technical University, Faculty of Pharmacy, Department of Biochemistry, Trabzon, Turkiye
| | - Didem Akkaya
- Karadeniz Technical University, Faculty of Pharmacy, Department of Biochemistry, Trabzon, Turkiye
| | - Suat Sarı
- Hacettepe University, Faculty of Pharmacy, Department of Pharmaceutical Chemistry, Ankara, Turkiye
| | - Burak Barut
- Karadeniz Technical University, Faculty of Pharmacy, Department of Biochemistry, Trabzon, Turkiye
| | - Baybars Köksoy
- Bursa Technical University, Department of Chemistry, Bursa, Turkiye.
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5
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Pisanu F, Sykula A, Sciortino G, Maseras F, Lodyga-Chruscinska E, Garribba E. Experimental and Computational Studies on the Interaction of DNA with Hesperetin Schiff Base Cu II Complexes. Int J Mol Sci 2024; 25:5283. [PMID: 38791321 PMCID: PMC11121494 DOI: 10.3390/ijms25105283] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2024] [Revised: 05/07/2024] [Accepted: 05/08/2024] [Indexed: 05/26/2024] Open
Abstract
The interactions with calf thymus DNA (CT-DNA) of three Schiff bases formed by the condensation of hesperetin with benzohydrazide (HHSB or L1H3), isoniazid (HIN or L2H3), or thiosemicarbazide (HTSC or L3H3) and their CuII complexes (CuHHSB, CuHIN, and CuHTSC with the general formula [CuLnH2(AcO)]) were evaluated in aqueous solution both experimentally and theoretically. UV-Vis studies indicate that the ligands and complexes exhibit hypochromism, which suggests helical ordering in the DNA helix. The intrinsic binding constants (Kb) of the Cu compounds with CT-DNA, in the range (2.3-9.2) × 106, from CuHTSC to CuHHSB, were higher than other copper-based potential drugs, suggesting that π-π stacking interaction due to the presence of the aromatic rings favors the binding. Thiazole orange (TO) assays confirmed that ligands and Cu complexes displace TO from the DNA binding site, quenching the fluorescence emission. DFT calculations allow for an assessment of the equilibrium between [Cu(LnH2)(AcO)] and [Cu(LnH2)(H2O)]+, the tautomer that binds CuII, amido (am) and not imido (im), and the coordination mode of HTSC (O-, N, S), instead of (O-, N, NH2). The docking studies indicate that the intercalative is preferred over the minor groove binding to CT-DNA with the order [Cu(L1H2am)(AcO)] > [Cu(L2H2am)(AcO)] ≈ TO ≈ L1H3 > [Cu(L3H2am)(AcO)], in line with the experimental Kb constants, obtained from the UV-Vis spectroscopy. Moreover, dockings predict that the binding strength of [Cu(L1H2am)(AcO)] is larger than [Cu(L1H2am)(H2O)]+. Overall, the results suggest that when different enantiomers, tautomers, and donor sets are possible for a metal complex, a computational approach should be recommended to predict the type and strength of binding to DNA and, in general, to macromolecules.
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Affiliation(s)
- Federico Pisanu
- Dipartimento di Medicina, Chirurgia e Farmacia, Università di Sassari, Viale San Pietro, I-07100 Sassari, Italy;
| | - Anna Sykula
- Faculty of Biotechnology and Food Sciences, Institute of Natural Products and Cosmetics, Lodz University of Technology, Stefanowskiego 2/22, 90-537 Lodz, Poland; (A.S.); (E.L.-C.)
| | - Giuseppe Sciortino
- Department de Química, Universitat Autònoma de Barcelona, Cerdanyola del Vallés, 08193 Barcelona, Spain;
- Institute of Chemical Research of Catalonia (ICIQ), The Barcelona Institute of Science and Technology (BIST), 43007 Tarragona, Spain;
| | - Feliu Maseras
- Institute of Chemical Research of Catalonia (ICIQ), The Barcelona Institute of Science and Technology (BIST), 43007 Tarragona, Spain;
| | - Elzbieta Lodyga-Chruscinska
- Faculty of Biotechnology and Food Sciences, Institute of Natural Products and Cosmetics, Lodz University of Technology, Stefanowskiego 2/22, 90-537 Lodz, Poland; (A.S.); (E.L.-C.)
| | - Eugenio Garribba
- Dipartimento di Medicina, Chirurgia e Farmacia, Università di Sassari, Viale San Pietro, I-07100 Sassari, Italy;
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Sedighi RE, Behzad M, Azizi N. Metallosalen modified carbon nitride a versatile and reusable catalyst for environmentally friendly aldehyde oxidation. Sci Rep 2024; 14:8498. [PMID: 38605107 PMCID: PMC11009278 DOI: 10.1038/s41598-024-58946-3] [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: 12/25/2023] [Accepted: 04/04/2024] [Indexed: 04/13/2024] Open
Abstract
The development of environmentally friendly catalysts for organic transformations is of great importance in the field of green chemistry. Aldehyde oxidation reactions play a crucial role in various industrial processes, including the synthesis of pharmaceuticals, agrochemicals, and fine chemicals. This paper presents the synthesis and evaluation of a new metallosalen carbon nitride catalyst named Co(salen)@g-C3N4. The catalyst was prepared by doping salicylaldehyde onto carbon nitride, and subsequently, incorporating cobalt through Schiff base chemistry. The Co(salen)@g-C3N4 catalyst was characterized using various spectroscopic techniques including Scanning Electron Microscopy (SEM), X-ray Diffraction (XRD), Infrared Spectroscopy (IR), and Thermogravimetric Analysis (TGA). Furthermore, after modification with salicylaldehyde, the carbon nitride component of the catalyst exhibited remarkable yields (74-98%) in oxidizing various aldehyde derivatives (20 examples) to benzoic acid. This oxidation reaction was carried out under mild conditions and resulted in short reaction times (120-300 min). Importantly, the catalyst demonstrated recyclability, as it could be reused for five consecutive runs without any loss of activity. The reusable nature of the catalyst, coupled with its excellent yields in oxidation reactions, makes it a promising and sustainable option for future applications.
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Affiliation(s)
| | - Mahdi Behzad
- Faculty of Chemistry, Semnan University, Semnan, Iran.
| | - Najmedin Azizi
- Chemistry and Chemical Engineering Research Center of Iran, P.O. Box 14335-186, Tehran, Iran.
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7
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Ahchouch H, Chaouiki A, Al-Moubaraki AH, Al-Ahmari JM, Al-Ghamdi AA, Bammou L, Belkhaouda M, Chafiq M, Ko YG. Fabrication of Protective Organic Layer Using Schiff-Base Metal Complex Responsible for Excellent Corrosion Performance: Experimental and Theoretical Perspectives. ACS OMEGA 2024; 9:15015-15029. [PMID: 38585106 PMCID: PMC10993390 DOI: 10.1021/acsomega.3c09097] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/15/2023] [Revised: 02/19/2024] [Accepted: 03/08/2024] [Indexed: 04/09/2024]
Abstract
The effectiveness of a copper(II) complex with a Schiff base derived from 2-amino-4-phenyl-5-methylthiazole and salicylaldehyde (APMS) as a corrosion inhibitor for XC18 steel in an HCl solution was investigated. Experimental findings indicated a slight negative correlation between inhibition efficiencies in 1 M HCl and temperature but a positive correlation with both inhibitor concentration and immersion time, respectively. The weight loss measurement revealed that APMS achieved a maximum inhibition rate of 92.07% at 303 K. A fitting analysis demonstrated that APMS adheres to the Langmuir adsorption isotherm. The electrochemical results revealed an enhanced inhibitive performance of APMS, with the efficiency increasing as concentrations increased, ultimately reaching a peak of 94.47% at 5 × 10-3 mol L-1. Potentiodynamic polarization measurements revealed that APMS acted as a mixed-type inhibitor without affecting the corrosion mechanism. Scanning electron microscopy investigations of the metal surfaces corroborated the presence of an adsorbed organic layer. Advanced theoretical calculations utilizing density functional theory and first-principles density-functional tight-binding were conducted to gain insights into the behavior of APMS on the metal surface. APMS derives its advantages from crucial inter- and intramolecular interactions, resulting in the formation of a resilient adsorption layer, in line with the experimental findings. It is found that the presence of the APMS-based inhibitor exhibits a significant synergistic corrosion inhibition effect. The current study offers a design direction for enhancing the structural characteristics of Schiff base metal complexes, laying the groundwork for multifunctional frameworks to minimize corrosion rates with considerations for real-world use and cost-efficiency. The ability to replace harmful, expensive constituents with sustainable, and cost-effective organic alternatives represents a significant outcome of this study.
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Affiliation(s)
- Hamid Ahchouch
- Laboratory
of Applied Chemistry and Environment, ENSA,
University Ibn Zohr, P.O. Box 1136, Agadir 80000, Morocco
| | - Abdelkarim Chaouiki
- Materials
Electrochemistry Laboratory, School of Materials Science and Engineering, Yeungnam University, Gyeongsan 38541, Republic of Korea
| | - Aisha H. Al-Moubaraki
- Department
of Chemistry, Faculty of Sciences-Alfaisaliah Campus, University of Jeddah, Jeddah 21589, Saudi Arabia
| | - Jamilah M. Al-Ahmari
- Department
of Chemistry, Faculty of Sciences-Alfaisaliah Campus, University of Jeddah, Jeddah 21589, Saudi Arabia
| | - Azza A. Al-Ghamdi
- Department
of Chemistry, Faculty of Sciences-Alfaisaliah Campus, University of Jeddah, Jeddah 21589, Saudi Arabia
| | - Lahcen Bammou
- Laboratory
of Applied Chemistry and Environment, ENSA,
University Ibn Zohr, P.O. Box 1136, Agadir 80000, Morocco
- Higher
School of Education and Training, Agadir 80000, Morocco
| | - M’hammed Belkhaouda
- Laboratory
of Applied Chemistry and Environment, ENSA,
University Ibn Zohr, P.O. Box 1136, Agadir 80000, Morocco
- Laboratory
of Sciences and Didactic of Sciences, CRMEF, Inzegane 80000, Morocco
| | - Maryam Chafiq
- Materials
Electrochemistry Laboratory, School of Materials Science and Engineering, Yeungnam University, Gyeongsan 38541, Republic of Korea
| | - Young Gun Ko
- Materials
Electrochemistry Laboratory, School of Materials Science and Engineering, Yeungnam University, Gyeongsan 38541, Republic of Korea
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8
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Hosny NM, Samir G, Abdel-Rhman MH. N'-(Furan-2-ylmethylene)-2-hydroxybenzohydrazide and its metal complexes: synthesis, spectroscopic investigations, DFT calculations and cytotoxicity profiling. BMC Chem 2024; 18:22. [PMID: 38281963 PMCID: PMC10823611 DOI: 10.1186/s13065-023-01098-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2023] [Accepted: 11/30/2023] [Indexed: 01/30/2024] Open
Abstract
The ligand, N'-(furan-2-ylmethylene)-2-hydroxybenzohydrazide (H2L), was synthesized characterized through various spectral studies which cleared out that the free ligand existed in keto form. The ligand upon reaction with Cu(II), Co(II), Ni(II) and Zn(II) acetates yielded complexes with stoichiometric ratio 1:2 (M:L) which has been validated through the elemental and mass spectral measurements. The IR and NMR spectral studies of the isolated complexes disclosed that the ligand chelated to metal ion in mononegative bidentate fashion via the azomethine nitrogen and deprotonated enolized carbonyl oxygen. Moreover, the DFT quantum chemical calculations designated that the ligand and Ni(II) complex exhibited the highest and lowest values of HOMO, LUMO energies and HOMO-LUMO energy gap, respectively. Furthermore, the in vitro cytotoxic activity towards HePG-2 and HCT-116 cell lines of the isolated compounds was investigated and the data cleared out that the ligand was more potent than the metal complexes.
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Affiliation(s)
- Nasser M Hosny
- Chemistry Department, Faculty of Science, Port Said University, P.O. Box 4252, Port-Said, Egypt.
| | - Ghada Samir
- Chemistry Department, Faculty of Science, Port Said University, P.O. Box 4252, Port-Said, Egypt
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9
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Liu GL, Wu EH, Hung YC, Chou WC, Hung CH, Lin CC, Ko BT. Tetracosanuclear nickel complexes as effective catalysts for cycloaddition of carbon dioxide with epoxides. Dalton Trans 2024; 53:1425-1429. [PMID: 38179831 DOI: 10.1039/d3dt03460g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2024]
Abstract
A series of well-defined tetracosanuclear nickel complexes 3-7 facilely produced by one-pot synthesis were active catalysts for cycloaddition of CO2 and cyclohexene oxide (CHO). These nickel complexes were doughnut-like supramolecular coordination complexes involving eight repeating units, and each of them contains one Schiff base ligand and three nickel(II) ions. Notably, the 24-nuclear nickel cluster complex 3 in combination with nucleophilic additives was the most efficient catalyst to mediate CO2 coupling with CHO to generate CO2-based cis-cyclohexene carbonates. In addition to CO2/CHO cycloaddition, complex 3 was also found to effectively couple CO2 with other alicyclic epoxides, generating the corresponding cyclic carbonates. Additionally, kinetic investigations for CO2 cycloaddition of CHO using 3 were reported.
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Affiliation(s)
- Guan-Lin Liu
- Department of Chemistry, National Chung Hsing University, Taichung 402, Taiwan.
| | - En-Hsu Wu
- Department of Chemistry, National Chung Hsing University, Taichung 402, Taiwan.
| | - Yu-Ching Hung
- Department of Chemistry, National Chung Hsing University, Taichung 402, Taiwan.
| | - Wei-Chi Chou
- Department of Chemistry, National Chung Hsing University, Taichung 402, Taiwan.
| | - Chia-Hsin Hung
- Department of Chemistry, National Chung Hsing University, Taichung 402, Taiwan.
| | - Chu-Chieh Lin
- Department of Chemistry, National Chung Hsing University, Taichung 402, Taiwan.
| | - Bao-Tsan Ko
- Department of Chemistry, National Chung Hsing University, Taichung 402, Taiwan.
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10
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Khalil A, Adam MSS. Bimetallic bis-Aroyldihydrazone-Isatin Complexes of High O=V(IV) and Low Cu(II) Valent Ions as Effective Biological Reagents for Antimicrobial and Anticancer Assays. Molecules 2024; 29:414. [PMID: 38257327 PMCID: PMC10820496 DOI: 10.3390/molecules29020414] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2023] [Revised: 01/06/2024] [Accepted: 01/10/2024] [Indexed: 01/24/2024] Open
Abstract
Due to the versatile bioreactivity of aroyldihydrazone complexes as cost-effective alternatives with different transition metals, two novel bimetallic homo-complexes (VOLph and CuLph) were prepared via the coordination of a terephthalic dihydrazone diisatin ligand (H2Lph) with VO2+ and Cu2+ ions, respectively. The structure elucidation was confirmed by alternative spectral methods. Biologically, the H2Lph ligand and its MLph complexes (M2+ = VO2+ or Cu2+) were investigated as antimicrobial and anticancer agents. Their biochemical activities towards ctDNA (calf thymus DNA) were estimated using measurable titration viscometrically and spectrophotometrically, as well as the gel electrophoresis technique. The growth inhibition of both VOLph and CuLph complexes against microbial and cancer cells was measured, and the inhibition action, MIC, and IC50 were compared to the inhibition action of the free H2Lph ligand. Both VOLph and CuLph showed remarkable interactive binding with ctDNA compared to the free ligand H2Lph, based on Kb = 16.31, 16.04 and 12.41 × 107 mol-1 dm3 and ΔGb≠ = 47.11, -46.89, and -44.05 kJ mol-1 for VOLph, CuLph, and H2Lph, respectively, due to the central metal ion (VIVO and CuII ions). VOLph (with a higher oxidation state of the V4+ ion and oxo-ligand) exhibited enhanced interaction with the ctDNA molecule compared to CuLph, demonstrating the role and type of the central metal ion within the performed electronegative and electrophilic characters.
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Affiliation(s)
- Ahmed Khalil
- Department of Chemistry, College of Science, King Faisal University, P.O. Box 400, Al-Ahsa 31982, Saudi Arabia;
- Chemistry Department, Faculty of Science, Zagazig University, Zagazig 44519, Egypt
| | - Mohamed Shaker S. Adam
- Department of Chemistry, College of Science, King Faisal University, P.O. Box 400, Al-Ahsa 31982, Saudi Arabia;
- Department of Chemistry, Faculty of Science, Sohag University, Sohag 82534, Egypt
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11
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Coandă M, Limban C, Nuță DC. Small Schiff Base Molecules-A Possible Strategy to Combat Biofilm-Related Infections. Antibiotics (Basel) 2024; 13:75. [PMID: 38247634 PMCID: PMC10812491 DOI: 10.3390/antibiotics13010075] [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: 12/13/2023] [Revised: 01/10/2024] [Accepted: 01/11/2024] [Indexed: 01/23/2024] Open
Abstract
Microorganisms participating in the development of biofilms exhibit heightened resistance to antibiotic treatment, therefore infections involving biofilms have become a problem in recent years as they are more difficult to treat. Consequently, research efforts are directed towards identifying novel molecules that not only possess antimicrobial properties but also demonstrate efficacy against biofilms. While numerous investigations have focused on antimicrobial capabilities of Schiff bases, their potential as antibiofilm agents remains largely unexplored. Thus, the objective of this article is to present a comprehensive overview of the existing scientific literature pertaining to small molecules categorized as Schiff bases with antibiofilm properties. The survey involved querying four databases (Web of Science, ScienceDirect, Scopus and Reaxys). Relevant articles published in the last 10 years were selected and categorized based on the molecular structure into two groups: classical Schiff bases and oximes and hydrazones. Despite the majority of studies indicating a moderate antibiofilm potential of Schiff bases, certain compounds exhibited a noteworthy effect, underscoring the significance of considering this type of molecular modeling when seeking to develop new molecules with antibiofilm effects.
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Affiliation(s)
| | - Carmen Limban
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Carol Davila University of Medicine and Pharmacy, 6 Traian Vuia Str., 020950 Bucharest, Romania; (M.C.); (D.C.N.)
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12
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Azzouzi M, Azougagh O, Ouchaoui AA, El hadad SE, Mazières S, Barkany SE, Abboud M, Oussaid A. Synthesis, Characterizations, and Quantum Chemical Investigations on Imidazo[1,2- a]pyrimidine-Schiff Base Derivative: ( E)-2-Phenyl- N-(thiophen-2-ylmethylene)imidazo[1,2- a]pyrimidin-3-amine. ACS OMEGA 2024; 9:837-857. [PMID: 38222514 PMCID: PMC10785637 DOI: 10.1021/acsomega.3c06841] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/08/2023] [Revised: 10/27/2023] [Accepted: 11/17/2023] [Indexed: 01/16/2024]
Abstract
In this study, (E)-2-phenyl-N-(thiophen-2-ylmethylene)imidazo[1,2-a]pyrimidin-3-amine (3) is synthesized, and detailed spectral characterizations using 1H NMR, 13C NMR, mass, and Fourier transform infrared (FT-IR) spectroscopy were performed. The optimized geometry was computed using the density functional theory method at the B3LYP/6-311++G(d,p) basis set. The theoretical FT-IR and NMR (1H and 13C) analysis are agreed to validate the structural assignment made for (3). Frontier molecular orbitals, molecular electrostatic potential, Mulliken atomic charge, electron localization function, localized orbital locator, natural bond orbital, nonlinear optical, Fukui functions, and quantum theory of atoms in molecules analyses are undertaken and meticulously interpreted, providing profound insights into the molecular nature and behaviors. In addition, ADMET and drug-likeness studies were carried out and investigated. Furthermore, molecular docking and molecular dynamics simulations have been studied, indicating that this is an ideal molecule to develop as a potential vascular endothelial growth factor receptor-2 inhibitor.
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Affiliation(s)
- Mohamed Azzouzi
- Laboratory
of Molecular Chemistry, Materials and Environment (LCM2E), Department
of Chemistry, Multidisciplinary Faculty of Nador, University Mohamed I, Nador 60700, Morocco
| | - Omar Azougagh
- Laboratory
of Molecular Chemistry, Materials and Environment (LCM2E), Department
of Chemistry, Multidisciplinary Faculty of Nador, University Mohamed I, Nador 60700, Morocco
| | - Abderrahim Ait Ouchaoui
- Laboratory
of Medical Biotechnology (MedBiotech), Bionova Research Center, Medical
and Pharmacy School, Mohammed V University, Agdal, Rabat B.P 8007, Morocco
| | - Salah eddine El hadad
- Laboratory
of Medical Biotechnology (MedBiotech), Bionova Research Center, Medical
and Pharmacy School, Mohammed V University, Agdal, Rabat B.P 8007, Morocco
| | - Stéphane Mazières
- Laboratory
of IMRCP, University Paul Sabatier, CNRS
UMR 5623, 118 route de Narbonne, Toulouse 31062, France
| | - Soufian El Barkany
- Laboratory
of Molecular Chemistry, Materials and Environment (LCM2E), Department
of Chemistry, Multidisciplinary Faculty of Nador, University Mohamed I, Nador 60700, Morocco
| | - Mohamed Abboud
- Catalysis
Research Group (CRG), Department of Chemistry, College of Science, King Khalid University, P.O. Box 9004, Abha 61413, Saudi Arabia
| | - Adyl Oussaid
- Laboratory
of Molecular Chemistry, Materials and Environment (LCM2E), Department
of Chemistry, Multidisciplinary Faculty of Nador, University Mohamed I, Nador 60700, Morocco
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13
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Arshad JZ, Tabassum S, Kiani MS, Arshad S, Hashmi MA, Majeed I, Ali H, Shah SSA. Anticancer Properties of Ru and Os Half-Sandwich Complexes of N,S Bidentate Schiff Base Ligands Derived from Phenylthiocarbamide. Chem Asian J 2023; 18:e202300804. [PMID: 37737043 DOI: 10.1002/asia.202300804] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2023] [Accepted: 09/20/2023] [Indexed: 09/23/2023]
Abstract
The versatile coordinating nature of N,S bidentate ligands is of great importance in medicinal chemistry imparting stability and enhancing biological properties of the metal complexes. Phenylthiocarbamide-based N,S donor Schiff bases converted into RuII /OsII (cymene) complexes and characterized by spectroscopic techniques and elemental analysis. The hydrolytic stability of metal complexes to undergo metal-halide ligand exchange reaction was confirmed both by the DFT and NMR experimentation. The ONIOM (QM/MM) study confirmed the histone protein targeting nature of aqua/hydroxido complex 2 aH with an excellent binding energy of -103.19 kcal/mol. The antiproliferative activity against a panel of cancer cells A549, MCF-7, PC-3, and HepG2 revealed that ruthenium complexes 1 a-3 a were more cytotoxic than osmium complexes and their respective ligands 1-3 as well. Among these ruthenium cymene complex bearing sulfonamide moiety 2 a proved a strong cytotoxic agent and showed excellent correlation of cellular accumulation, lipophilicity, and drug-likeness to the anticancer activity. Moreover, the favorable physiochemical properties such as bioavailability and gastrointestinal absorption of ligand 2 also supported the development of Ru complex 2 a as an orally active anticancer metallodrug.
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Affiliation(s)
- Jahan Zaib Arshad
- Department of Chemistry, Government College, Women University Sialkot, Kutchehry Road, Sialkot, Pakistan
| | - Sana Tabassum
- Department of Chemistry, Government College, Women University Sialkot, Kutchehry Road, Sialkot, Pakistan
| | - Muhammad Shaheer Kiani
- Department of Chemistry, Division of Science & Technology, University of Education, 54770, Lahore, Pakistan
| | - Sundas Arshad
- Department of Chemistry, Government College, Women University Sialkot, Kutchehry Road, Sialkot, Pakistan
| | - Muhammad Ali Hashmi
- Department of Chemistry, Division of Science & Technology, University of Education, 54770, Lahore, Pakistan
| | - Imran Majeed
- Department of Chemistry, Quaid-i-Azam University, Islamabad, Pakistan
| | - Hassan Ali
- Department of Chemistry, School of Natural Sciences, National University of Science and Technology H-12 Islamabad, Islamabad, 44000, Pakistan
| | - Syed Shoaib Ahmad Shah
- Department of Chemistry, School of Natural Sciences, National University of Science and Technology H-12 Islamabad, Islamabad, 44000, Pakistan
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14
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Younus HA, Saleem F, Hameed A, Al-Rashida M, Al-Qawasmeh RA, El-Naggar M, Rana S, Saeed M, Khan KM. Part-II: an update of Schiff bases synthesis and applications in medicinal chemistry-a patent review (2016-2023). Expert Opin Ther Pat 2023; 33:841-864. [PMID: 38115554 DOI: 10.1080/13543776.2023.2297729] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2023] [Accepted: 11/15/2023] [Indexed: 12/21/2023]
Abstract
INTRODUCTION Schiff bases are compounds with characteristic features of azomethine linkage (-C=N-). Schiff bases are capable of coordinating with metal ions via azomethine nitrogen. Schiff base derivatives and their metal complexes are known for intriguing novel therapeutic properties. In organic synthesis, the Schiff base reaction is prime in creating the C-N bond. Synthetic accessibility and structural diversity are the salient features for facile synthesis of Schiff base hybrids via a condensation reaction between an aldehyde/ketone and primary amines. AREA COVERED This review aims to provide a comprehensive overview of the commendable medicinal applications of Schiff base derivatives and their metal complexes patented from 2016 to 2023. EXPERT OPINION Schiff base derivatives are exceptional molecules for their assorted applications in medicinal chemistry. Several Schiff base products are marketed as drugs, and plenty of room is available for the purposive synthesis of new compounds in a diverse pool of disciplines. Expansion in the derivatization of Schiff bases in innumerable directions with multitudinous applications makes them 'magical molecules.' These compounds have proved extraordinary, from medicinal chemistry to other fields outside medicine. This review covers the therapeutic importance of Schiff base derivatives and aims to cover the patents published in recent years (2016-2023).
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Affiliation(s)
- Hafiza Amna Younus
- Department of Chemistry, Forman Christian College (A Chartered University), Lahore, Pakistan
| | - Faiza Saleem
- H. E. J. Research Institute of Chemistry, International Center for Chemical and Biological Sciences, University of Karachi, Karachi, Pakistan
| | - Abdul Hameed
- Department of Chemistry, University of Sahiwal, Sahiwal, Pakistan
| | - Mariya Al-Rashida
- Department of Chemistry, Forman Christian College (A Chartered University), Lahore, Pakistan
| | - Raed A Al-Qawasmeh
- Pure and Applied Chemistry Group, Department of Chemistry, College of Sciences, University of Sharjah, Sharjah, UAE
| | - Mohamed El-Naggar
- Pure and Applied Chemistry Group, Department of Chemistry, College of Sciences, University of Sharjah, Sharjah, UAE
| | - Sobia Rana
- Department of Clinical Pharmacy, Institute for Research and Medical Consultations (IRMC), Imam Abdulrahman Bin Faisal University, Dammam, Saudi Arabia
| | - Muhammad Saeed
- Department of Chemistry and Chemical Engineering, Syed Babar Ali School of Science and Engineering, Lahore University of Management Sciences, Lahore, Pakistan
| | - Khalid Mohammed Khan
- H. E. J. Research Institute of Chemistry, International Center for Chemical and Biological Sciences, University of Karachi, Karachi, Pakistan
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15
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Sessa L, Diana R, Gentile FS, Mazzaglia F, Panunzi B. AIEgen orthopalladated hybrid polymers for efficient inactivation of the total coliforms in urban wastewater. Sci Rep 2023; 13:15790. [PMID: 37737240 PMCID: PMC10516893 DOI: 10.1038/s41598-023-41315-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2023] [Accepted: 08/24/2023] [Indexed: 09/23/2023] Open
Abstract
Monitorable AIE polymers with a bioactive pattern are employed in advanced biomedical applications such as functional coatings, theranostic probes, and implants. After the global COVID-19 pandemic, interest in developing surfaces with superior antimicrobial, antiproliferative, and antiviral activities dramatically increased. Many formulations for biocide surfaces are based on hybrid organic/inorganic materials. Palladium (II) complexes display relevant activity against common bacteria, even higher when compared to their uncoordinated ligands. This article reports the design and synthesis of two series of orthopalladated polymers obtained by grafting a cyclopalladated fragment on two different O, N chelating Schiff base polymers. Different grafting percentages were examined and compared for each organic polymer. The fluorescence emission in the solid state was explored on organic matrixes and grafted polymers. DFT analysis provided a rationale for the role of the coordination core. The antibacterial response of the two series of hybrid polymers was tested against the total coliform group of untreated urban wastewater, revealing excellent inactivation ability.
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Affiliation(s)
- Lucia Sessa
- Department of Pharmacy, University of Salerno, Via Giovanni Paolo II, 132, 84084, Fisciano, SA, Italy
| | - Rosita Diana
- Department of Agricultural Sciences, University of Naples Federico II, Portici, NA, Italy.
| | - Francesco Silvio Gentile
- Department of Chemical Sciences, University of Napoli Federico II, Strada Comunale Cinthia, 26, 80126, Napoli, Italy
| | - Fabio Mazzaglia
- C.R.A. S.R.L., Calle Giovanni Legrenzi, 2, 30171, Venice, VE, Italy
| | - Barbara Panunzi
- Department of Agricultural Sciences, University of Naples Federico II, Portici, NA, Italy
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16
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Ebrahim RMA, Abdelbagi A, Sulfab Y, Hamdi OAA, Shokri SA, Ali EA. Synthesis, characterization, molecular docking, and antimicrobial activities of dinuclear nickel(ii), palladium(ii), and platinum(iv) complexes. RSC Adv 2023; 13:27501-27511. [PMID: 37720836 PMCID: PMC10501048 DOI: 10.1039/d3ra04768g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2023] [Accepted: 08/25/2023] [Indexed: 09/19/2023] Open
Abstract
New nickel(ii), palladium(ii), and platinum(iv) complexes were synthesized by reacting the metal ions with benzidinedioxime in a 1 : 1 mole ratio. The CHN elemental analysis, spectroscopic analyses, and powder X-ray diffraction (PXRD) results showed that two Ni(ii) and two Pd(ii) ions coordinated to two benzidinedioxime ligands via the nitrogen atoms of both oxime groups and the two azomethine nitrogen atoms. In the case of the dinuclear platinum(iv) complex, however, each Pt(iv) is coordinated with the two oxygen atoms of the oxime group and the two azomethine nitrogen atoms of the ligand. Both elemental analyses and PXRD indicated that the complex ions of Ni(ii) and Pt(iv) have distorted octahedral geometry, whereas Pd(ii) has a square planar geometry. Molecular docking studies showed that the nickel(ii) complex is the most potent dual DHPS/DHFR bacterial inhibitor. The receptor of the DHPS enzyme (3ZTE) showed the best interaction with the nickel(ii) complex when compared to a receptor of the DHFR enzyme (3FRB). All the synthesized complexes and ligand exhibited significant results against PS. Aeruginous than their corresponding SMX-TMP drug. Among the three synthesized complexes, the nickel(ii) complex possessed the highest antimicrobial activities against tested microorganisms.
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Affiliation(s)
- Reem M A Ebrahim
- Biotechnology Department, Africa City of Technology Khartoum Sudan
- Chemistry Department, Faculty of Science, Sudan University of Science and Technology Khartoum Sudan
| | - Abubakar Abdelbagi
- Pharmaceutical Microbiology Department, Faculty of Pharmacy, Al-Neelain University Khartoum Sudan
| | - Yousif Sulfab
- Chemistry Department, Faculty of Science and Technology, Al-Neelain University Khartoum Sudan
| | | | - Samah A Shokri
- Pharmaceutical Microbiology Department, Faculty of Pharmacy, Al-Neelain University Khartoum Sudan
| | - Elmugdad A Ali
- Chemistry Department, Faculty of Science, Sudan University of Science and Technology Khartoum Sudan
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17
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Mohammed R, Ogadi P, Seth DM, Vibho A, Gallant SK, Waterman R. Synthesis and Characterization of 2-(((2,7-Dihydroxynaphthalen-1-yl)methylene)amino)-3',6'-bis(ethylamino)-2',7'-dimethylspiro[isoindoline-1,9'-xanthen]-3-one and Colorimetric Detection of Uranium in Water. MOLBANK 2023; 2023:M1725. [PMID: 37780070 PMCID: PMC10540563 DOI: 10.3390/m1725] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/03/2023] Open
Abstract
2-(((2,7-Dihydroxynaphthalen-1-yl)methylene)amino)-3',6'-bis(ethylamino)-2',7'-dimethyl-spiro[isoindoline-1,9'-xanthen]-3-one was synthesized using Rhodamine 6G hydrazide (prepared using literature methods) and commercially available 2,7-dihydroxynaphthalene-1-carbaldehyde via imine condensation. Structural characterization was performed using FT-IR, 1H-NMR, 13C-NMR, X-ray, and HRMS. This Schiff base shows promise as a ligand for the colorimetric analysis of uranium in water.
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Affiliation(s)
- Rahisa Mohammed
- Department of Chemistry and Biochemistry, Norwich University, Northfield, VT 05663, USA
| | - Peace Ogadi
- Department of Chemistry and Biochemistry, Norwich University, Northfield, VT 05663, USA
| | - Dennis M. Seth
- Department of Chemistry, University of Vermont, Burlington, VT 05405, USA
| | - Amrutaa Vibho
- Department of Chemistry and Biochemistry, Norwich University, Northfield, VT 05663, USA
| | - Sarah K. Gallant
- Department of Chemistry and Biochemistry, Norwich University, Northfield, VT 05663, USA
| | - Rory Waterman
- Department of Chemistry, University of Vermont, Burlington, VT 05405, USA
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18
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Ma W, Yang Y, Jia Y, Fu D, Zhao F, Xu K. Combustion process of a promising catalyst [Cu(Salen)] for HMX-CMDB propellants. RSC Adv 2023; 13:25853-25861. [PMID: 37655351 PMCID: PMC10466475 DOI: 10.1039/d3ra04671k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2023] [Accepted: 08/23/2023] [Indexed: 09/02/2023] Open
Abstract
Metal organic complexes are regarded as a series of promising combustion catalysts for solid rocket propellants. Their effects on the combustion performance of propellants are closely related to the reaction mechanism. Here, the metal-organic complex Cu(Salen) was investigated as a candidate material for the combustion catalyst of the HMX-added composite modified double-base propellant (HMX-CMDB). The combustion performance of the propellant was found to be evidently enhanced in the presence of Cu(Salen) compared with the propellant samples containing Benzoic-Cu or without catalyst. The addition of Cu(Salen) can improve the burning rate and combustion efficiency of the propellant - and greatly reduce the burning rate pressure index. Analysis shows that the addition of Cu(Salen) can increase the combustion area, flame brightness and combustion surface uniformity of the propellant to a higher degree. The sample can spray more beams of bright filaments on the flat combustion section, and the amount of gas generated by decomposition also greatly increases. In addition, Cu(Salen) shows amazing advantages in improving the surface of the propellant and the temperature gradient of the combustion flame.
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Affiliation(s)
- Wenzhe Ma
- Shaanxi Institute of Applied Physical Chemistry Shaanxi 710061 China
- School of Chemical Engineering, Northwest University Xi'an Shaanxi 710069 China
| | - Yanjing Yang
- Xi'an Modern Chemistry Research Institute Xi'an Shaanxi 710065 China
| | - Yuxin Jia
- Shaanxi Institute of Applied Physical Chemistry Shaanxi 710061 China
| | - Dongxiao Fu
- Shaanxi Institute of Applied Physical Chemistry Shaanxi 710061 China
| | - Fengqi Zhao
- Xi'an Modern Chemistry Research Institute Xi'an Shaanxi 710065 China
| | - Kangzhen Xu
- School of Chemical Engineering, Northwest University Xi'an Shaanxi 710069 China
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19
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Jubeen F, Jabeen I, Aftab U, Noor S, Hareem ME, Sultan M, Kazi M. Synthesis, Characterization, Theoretical and Experimental Anticancer Evaluation of Novel Cocrystals of 5-Fluorouracil and Schiff Bases against SW480 Colorectal Carcinoma. Pharmaceutics 2023; 15:1929. [PMID: 37514115 PMCID: PMC10383612 DOI: 10.3390/pharmaceutics15071929] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2023] [Revised: 06/28/2023] [Accepted: 07/03/2023] [Indexed: 07/30/2023] Open
Abstract
The chemotherapeutic agent known as 5-fluorouracil (5-FU) is an artificial fluoropyrimidine antimetabolite that has been widely used for its antineoplastic properties. Cocrystals of 5-fluorouracil (5-FU) with five different Schiff bases (benzylidene-urea (BU), benzylidene-aniline (BA), salicylidene-aniline (SA), salicylidene-phenylhydrazine (SPH), and para-hydroxy benzylideneaniline (HBA)) are reported in this study. The newly synthesized cocrystals were analyzed by FTIR and PXRD. In this study, we investigated the antitumor efficacy of 5-FU derivatives in SW480 colon cancer cells via MTT assay at varying dose concentrations. Molecular docking was performed to predict the binding mechanism of TS with various 5-FU complexes. FTIR revealed the presence of respective functional groups in the prepared cocrystals. The frequencies (v) of N-H (3220.24 cm-1) and carbonyl groups (1662.38 cm-1) in the spectrum of 5-FU shifted considerably in all derivative cocrystal new interactions. There was a noticeable transformation in the PXRD peak of 5-FU at 2θ = 28.37° in all derivatives. The novelty of the present study lies in the fact that 5-FU-BA showed an anticancer potential IC50 (6.4731) far higher than that of 5-FU (12.116), almost comparable to that of the reference drug doxorubicin (3.3159), against SW480 cancel cell lines, followed by 5-Fu-HBA (10.2174). The inhibition rates of 5-FU-BA and 5-FU-HBA were highest among the derivatives (99.85% and 99.37%, respectively) in comparison with doxorubicin (97.103%). The results revealed that the synthesized 5-FU cocrystals have promising antitumor efficacy compared with previously reported 5-FU and 5-FU. The activities of the cocrystals were rationalized by a molecular modeling approach to envisage binding modes with the target cancer protein.
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Affiliation(s)
- Farhat Jubeen
- Department of Chemistry, Government College Women University, Arfa Kareem Road, Faisalabad 38000, Pakistan
| | - Ishrat Jabeen
- School of Interdisciplinary Engineering and Sciences (SINES), National University of Sciences and Technology (NUST), Sector H12, Islamabad 44000, Pakistan
| | - Usman Aftab
- Department of Pharmacology, University of Health Sciences, Lahore 54600, Pakistan
| | - Sadia Noor
- School of Interdisciplinary Engineering and Sciences (SINES), National University of Sciences and Technology (NUST), Sector H12, Islamabad 44000, Pakistan
- Department of Inorganic Chemistry, University of Hohenheim, 70599 Stuttgart, Germany
| | - Mah E Hareem
- School of Interdisciplinary Engineering and Sciences (SINES), National University of Sciences and Technology (NUST), Sector H12, Islamabad 44000, Pakistan
| | - Misbah Sultan
- Institute of Chemistry, University of the Punjab, Quaid-i-Azam Campus, Lahore 54590, Pakistan
| | - Mohsin Kazi
- Department of Pharmaceutics, College of Pharmacy, King Saud University, P.O. Box 2457, Riyadh 11451, Saudi Arabia
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20
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Chatterjee T, Mohammad M, Islam S, Mohammad Wabaidur S, Christy M, Maidul Islam M, Hedayetullah Mir M, Mafiz Alam S. Fabrication of a pyridyl appended linear Co(II) based coordination polymer: Structural insights and molecular docking. Inorganica Chim Acta 2023. [DOI: 10.1016/j.ica.2023.121493] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/04/2023]
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21
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Hashmi K, Gupta S, Siddique A, Khan T, Joshi S. Medicinal applications of vanadium complexes with Schiff bases. J Trace Elem Med Biol 2023; 79:127245. [PMID: 37406475 DOI: 10.1016/j.jtemb.2023.127245] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/21/2023] [Revised: 05/31/2023] [Accepted: 06/15/2023] [Indexed: 07/07/2023]
Abstract
Many transition metal complexes have been explored for their therapeutic properties after the discovery of cisplatin. Schiff bases have an efficient complexation tendency with the transition metals and several medicinal properties have been reported. However, fewer studies have reported the medicinal utility of vanadium and its Schiff base complexes. This paper provides a comprehensive overview of vanadium complexes with Schiff bases along with their mechanistic insight. Vanadium complexes in + 4 and + 5 oxidation states have exhibited well-defined geometry and found to be thermodynamically stable. The studies have reported the G0/G1 phase cell cycle arrest and decreased delta psi m, inducing mitochondrial membrane depolarization in cancer cell lines along with the alterations in the metabolism of the cancer cells upon dosing with the vanadium complexes. Cancer cell invasion and growth are also found to be markedly reduced by peroxo complexes of vanadium. The studies included in the review paper have been taken from leading indexing databases and focus was laid on recent reports in literature. The biological potential of vanadium complexes of Schiff bases opens new horizons for future interdisciplinary studies and investigation focussed on understanding the biochemistry of these complexes, along with designing new complexes which have better bioavailability, solubility and low or non-toxicity.
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Affiliation(s)
- Kulsum Hashmi
- Department of Chemistry, Isabella Thoburn College, Lucknow, UP 226007, India
| | - Sakshi Gupta
- Department of Chemistry, Isabella Thoburn College, Lucknow, UP 226007, India
| | - Armeen Siddique
- Department of Chemistry, Isabella Thoburn College, Lucknow, UP 226007, India
| | - Tahmeena Khan
- Department of Chemistry, Integral University, Lucknow, UP 226026, India
| | - Seema Joshi
- Department of Chemistry, Isabella Thoburn College, Lucknow, UP 226007, India.
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22
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Liu Y, Feng H, Wang L, Yang T, Qiu J. Preparation of Bis-Thiophene Schiff Alkali-Copper Metal Complex for Metal Corrosion Inhibition. MATERIALS (BASEL, SWITZERLAND) 2023; 16:3214. [PMID: 37110049 PMCID: PMC10140990 DOI: 10.3390/ma16083214] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/20/2023] [Revised: 04/11/2023] [Accepted: 04/14/2023] [Indexed: 06/19/2023]
Abstract
Due to the obvious numerous economic and technical consequences of the corrosion process, its inhibition is one of the most critical aspects of current research. A corrosion inhibitor for the bis-thiophene Schiff base copper-metal complex Cu(II)@Thy-2 was investigated here, which was synthesized via a coordination reaction with a bis-thiophene Schiff base (Thy-2) as a ligand and copper chloride (CuCl2-2H2O) as a ligand metal salt. When the corrosion inhibitor concentration was increased to 100 ppm, the self-corrosion current density Icoor reached a minimum of 2.207 × 10-5 A/cm2, the charge transfer resistance reached a maximum of 932.5 Ω·cm2, and the corrosion inhibition efficiency reached a maximum of 95.2%, with the corrosion inhibition efficiency showing a trend of increasing first and then decreasing with concentration increase. After adding Cu(II)@Thy-2 corrosion inhibitor, a uniformly distributed dense corrosion inhibitor adsorption film formed on the surface of the Q235 metal substrate, significantly improving the corrosion profile compared to both before and after the addition of the corrosion inhibitor. Before and after the addition of corrosion inhibitor, the metal surface's contact angle CA increased from 54.54° to 68.37°, showing that the adsorbed corrosion inhibitor film decreased the metal surface's hydrophilicity and increased its hydrophobicity.
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Affiliation(s)
- Yafei Liu
- School of Petroleum and Chemical Engineering, Lanzhou University of Technology, Lanzhou 730050, China; (Y.L.)
| | - Huixia Feng
- School of Petroleum and Chemical Engineering, Lanzhou University of Technology, Lanzhou 730050, China; (Y.L.)
| | - Luyao Wang
- School of Petroleum and Chemical Engineering, Lanzhou University of Technology, Lanzhou 730050, China; (Y.L.)
| | - Tiantian Yang
- School of Petroleum and Chemical Engineering, Lanzhou University of Technology, Lanzhou 730050, China; (Y.L.)
| | - Jianhui Qiu
- Faculty of System Science and Technology, Akita Prefectural University, Yurihonjo 0150055, Japan
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23
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Bashir M, Saifullah M, Riaz M, Arshad M, Irfan A, Iqbal S, Farooqi ZH, Begum R. Schiff Bases derived from Phloroglucinol Carbonyl Variants and their Applications-A Review. INORG CHEM COMMUN 2023. [DOI: 10.1016/j.inoche.2023.110690] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/04/2023]
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24
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Physico-Chemical Study of Mn(II), Co(II), Cu(II), Cr(III), and Pd(II) Complexes with Schiff-Base and Aminopyrimidyl Derivatives and Anti-Cancer, Antioxidant, Antimicrobial Applications. Molecules 2023; 28:molecules28062555. [PMID: 36985526 PMCID: PMC10058022 DOI: 10.3390/molecules28062555] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2023] [Revised: 03/07/2023] [Accepted: 03/09/2023] [Indexed: 03/14/2023] Open
Abstract
A new class of biologically active mineral complexes was synthesized by reacting the following metal salts: MnCl2·4H2O, CoCl2·6H2O, CuCl2·2H2O, CrCl3·6H2O, and PdCl2 respectively with 2-amino-4,6-dimethyl pyrimidine (ADMPY) and Schiff’s base resulting from the condensation reaction between benzaldehyde with p-phenylenediamine and 2-hydroxy-1-naphthaldehyde as ligands have been synthesized and characterized on the basis of their CHN, thermal analysis, XRD, SEM and magnetic measurements along with their FT-IR and UV-vis spectra. The scanning electron microscope SEM measurements and the calculations on the powder XRD data indicate the nano-sized nature of the prepared complexes (average size 32–88 nm). The spectral data confirmed the coordinated ligand (HL) via a nitrogen atom of an azomethine group (-C=N-) and phenolic -OH group and NH2-ADMPY ligand with the metal ions. An octahedral geometry for all complexes has been proposed based on magnetic and electronic spectral data except Pd(II) complex, which has a tetrahedral geometry. Molecular modeling was performed for Cu(II) complex using the density functional method DFT/B3LYP to study the structures and the frontier molecular orbitals (HOMO and LUMO). The antioxidant of the complexes was studied using the 2,2-diphenyl-1-picrylhydrazyl (DPPH)-free radical-scavenging assays. The metal complexes were tested in vitro for anticancer activities against two cancer lines A-549 and MRC-5 cells. Cu(II) and Pd(II) complexes showed the highest cytotoxicity effect, comparable to that of other cis-platinum-based drugs. The complexes showed significant activity against fungi and bacteria.
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Diana R, Gentile FS, Concilio S, Petrella A, Belvedere R, Schibeci M, Arciello A, Di Costanzo L, Panunzi B. A DR/NIR Hybrid Polymeric Tool for Functional Bio-Coatings: Theoretical Study, Cytotoxicity, and Antimicrobial Activity. Polymers (Basel) 2023; 15:polym15040883. [PMID: 36850168 PMCID: PMC9967255 DOI: 10.3390/polym15040883] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2023] [Revised: 01/31/2023] [Accepted: 02/07/2023] [Indexed: 02/12/2023] Open
Abstract
Among modern biomaterials, hybrid tools containing an organic component and a metal cation are recognized as added value, and, for many advanced biomedical applications, synthetic polymers are used as thin protective/functional coatings for medical or prosthetic devices and implants. These materials require specific non-degradability, biocompatibility, antimicrobial, and antiproliferative properties to address safety aspects concerning their use in medicine. Moreover, bioimaging monitoring of the biomedical device and/or implant through biological tissues is a desirable ability. This article reports a novel hybrid metallopolymer obtained by grafting zinc-coordinated fragments to an organic polymeric matrix. This hybrid polymer, owing to its relevant emission in the deep red to near-infrared (DR/NIR) region, is monitorable; therefore, it represents a potential material for biomedical coating. Furthermore, it shows good biocompatibility and adhesion properties and excellent stability in slightly acidic/basic water solutions. Finally, in contact with the superficial layers of human skin, it shows antimicrobial properties against Staphylococcus aureus bacterial strains.
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Affiliation(s)
- Rosita Diana
- Department of Agricultural Sciences, University of Naples Federico II, 80055 Napoli, Italy
| | | | - Simona Concilio
- Department of Pharmacy, University of Salerno, 84084 Salerno, Italy
- Bionam Research Center for Biomaterials, University of Salerno, 84084 Salerno, Italy
| | | | | | - Martina Schibeci
- Department of Chemical Sciences, University of Naples Federico II, 80126 Napoli, Italy
| | - Angela Arciello
- Department of Chemical Sciences, University of Naples Federico II, 80126 Napoli, Italy
- Istituto Nazionale di Biostrutture e Biosistemi (INBB), 00136 Roma, Italy
| | - Luigi Di Costanzo
- Department of Agricultural Sciences, University of Naples Federico II, 80055 Napoli, Italy
| | - Barbara Panunzi
- Department of Agricultural Sciences, University of Naples Federico II, 80055 Napoli, Italy
- Correspondence:
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Saranya G, Devendraprasad K, Jayanthi P, Shanmugapriya P, Bhuvaneshwari N. Greener and rapid synthesis of benzal-based Schiff base ligands as an efficient antibacterial, antioxidant, and anticancer agent. SYNTHETIC COMMUN 2023. [DOI: 10.1080/00397911.2023.2172349] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Affiliation(s)
- G. Saranya
- Department of Chemistry, Chikkaiah Naicker College, Erode, India
| | | | - P. Jayanthi
- KSR College of Engineering, Tiruchengode, India
| | | | - N. Bhuvaneshwari
- Department of Chemistry, Chikkaiah Naicker College, Erode, India
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Alka, Gautam S, Kumar R, Singh P, Gandhi N, Jain P. Pharmacological aspects of Co(II), Ni(II) and Cu(II) schiff base complexes: An insight. RESULTS IN CHEMISTRY 2023. [DOI: 10.1016/j.rechem.2023.100849] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/16/2023] Open
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Synthesis, spectroscopic, quantum, thermal and kinetics, antibacterial and antifungal studies: Novel Schiff base 5-methyl-3-((5-bromosalicylidene) amino)- pyrazole and its transition metal complexes. RESULTS IN CHEMISTRY 2023. [DOI: 10.1016/j.rechem.2023.100813] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023] Open
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29
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Woźniczka M, Świątek M, Sutradhar M, Gądek-Sobczyńska J, Chmiela M, Gonciarz W, Pasternak B, Pająk M. Equilibria of complexes in the aqueous cobalt(II)- N-(2-hydroxybenzyl)phenylalanine system and their biological activity compared to analogous Schiff base structures. Comput Struct Biotechnol J 2023; 21:1312-1323. [PMID: 36814724 PMCID: PMC9939546 DOI: 10.1016/j.csbj.2023.01.035] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2022] [Revised: 01/25/2023] [Accepted: 01/25/2023] [Indexed: 01/30/2023] Open
Abstract
Due to their excellent prospects in biological applications, Schiff bases and their complexes are a source of continuing interest. The present study examines the formation of four cobalt(II) complexes with the reduced Schiff base N-(2-hydroxybenzyl)phenylalanine (PhAlaSal) in alkaline aqueous solution by pH-metry. UV-Vis and ESI-MS studies confirmed the model of proposed species. Kinetic analysis indicated that the single- and bi-ligand cobalt(II) complexes transitioned from octahedral to tetrahedral structures. The Schiff base and its complexes detected under physiological pH were tested for antimicrobial abilities and compared with analogous structures of the Schiff base derivative, N-(2-hydroxybenzyl)alanine (AlaSal). The ability of these structures to influence cell growth was tested on L929 mouse fibroblasts and on cervix and gastric adenocarcinoma cancer cell lines. N-(2-hydroxybenzyl)phenylalanine demonstrates greater antimicrobial efficacy than N-(2-hydroxybenzyl)alanine but also higher cytotoxicity; however, it is nonetheless effective against cancer cells. In turn, AlaSal demonstrates low cytotoxicity for fibroblasts and high cytotoxicity for gastric adenocarcinoma epithelial cells at bacteriostatic concentration for Helicobacter pylori and Candida strains. The presence of these microorganisms in the gastric milieu supports the development of gastritis and gastric cancer; AlaSal therapy may be simultaneously effective against both. Due to their cytotoxicity, Schiff base complexes are not suitable for use against fungal and bacterial infections, but may effectively prevent cancer cell growth. Data availability Data will be made available on request.
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Affiliation(s)
- Magdalena Woźniczka
- Department of Physical and Biocoordination Chemistry, Faculty of Pharmacy, Medical University of Lodz, Muszyńskiego 1, 90-151 Lodz, Poland,Corresponding author.
| | - Mirosława Świątek
- Department of Physical and Biocoordination Chemistry, Faculty of Pharmacy, Medical University of Lodz, Muszyńskiego 1, 90-151 Lodz, Poland
| | - Manas Sutradhar
- Faculdade de Engenharia, Universidade Lusófona de Humanidades e Tecnologias, Campo Grande 376, Lisboa 1749-024, Portugal,Centro de Química Estrutural, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisboa, Portugal
| | - Joanna Gądek-Sobczyńska
- Department of Physical and Biocoordination Chemistry, Faculty of Pharmacy, Medical University of Lodz, Muszyńskiego 1, 90-151 Lodz, Poland
| | - Magdalena Chmiela
- Department of Immunology and Infectious Biology, Institute of Microbiology, Biotechnology and Immunology, Faculty of Biology and Environmental Protection, University of Lodz, Banacha 12/16, 90-237 Lodz, Poland
| | - Weronika Gonciarz
- Department of Immunology and Infectious Biology, Institute of Microbiology, Biotechnology and Immunology, Faculty of Biology and Environmental Protection, University of Lodz, Banacha 12/16, 90-237 Lodz, Poland
| | - Beata Pasternak
- Department of Organic Chemistry, Faculty of Chemistry, University of Lodz, Tamka 12, 91-403 Lodz, Poland
| | - Marek Pająk
- Department of Physical and Biocoordination Chemistry, Faculty of Pharmacy, Medical University of Lodz, Muszyńskiego 1, 90-151 Lodz, Poland
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Schiff Bases: A Versatile Fluorescence Probe in Sensing Cations. J Fluoresc 2023; 33:859-893. [PMID: 36633727 DOI: 10.1007/s10895-022-03135-6] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2022] [Accepted: 12/24/2022] [Indexed: 01/13/2023]
Abstract
Metal cations such as Zn2+, Al3+, Hg2+, Cd2+, Sn2+, Fe2+, Fe3+ and Cu2+ play important roles in biology, medicine, and the environment. However, when these are not maintained in proper concentration, they can be lethal to life. Therefore, selective sensing of metal cations is of great importance in understanding various metabolic processes, disease diagnosis, checking the purity of environmental samples, and detecting toxic analytes. Schiff base probes have been largely used in designing fluorescent sensors for sensing metal ions because of their easy processing, availability, fast response time, and low detection limit. Herein, an in-depth report on metal ions recognition by some Schiff base fluorescent sensors, their sensing mechanism, their practical applicability in cell imaging, building logic gates, and analysis of real-life samples has been presented. The metal ions having biological, industrial, and environmental significance are targeted. The compiled information is expected to prove beneficial in designing and synthesis of the related Schiff base fluorescent sensors.
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Schiff Bases and Their Metal Complexes: A review on the history, synthesis, and applications. INORG CHEM COMMUN 2023. [DOI: 10.1016/j.inoche.2023.110451] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
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32
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Kanwal A, Parveen B, Ashraf R, Haider N, Ali KG. A review on synthesis and applications of some selected Schiff bases with their transition metal complexes. J COORD CHEM 2022. [DOI: 10.1080/00958972.2022.2138364] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Affiliation(s)
- Attia Kanwal
- Department of Chemistry, Government College University, Faisalabad, Pakistan
| | - Bushra Parveen
- Department of Chemistry, Government College University, Faisalabad, Pakistan
| | - Rizwan Ashraf
- Department of Chemistry, University of Agriculture, Faisalabad, Pakistan
| | - Noman Haider
- Department of Chemistry, Government College University, Faisalabad, Pakistan
| | - Kulsoom Ghulam Ali
- Department of Chemistry, Government College University, Faisalabad, Pakistan
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Basaran E, Gamze Sogukomerogullari H, Cakmak R, Akkoc S, Taskin-Tok T, Köse A. Novel chiral Schiff base Palladium(II), Nickel(II), Copper(II) and Iron(II) complexes: Synthesis, characterization, anticancer activity and molecular docking studies. Bioorg Chem 2022; 129:106176. [PMID: 36209564 DOI: 10.1016/j.bioorg.2022.106176] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2022] [Revised: 09/19/2022] [Accepted: 09/22/2022] [Indexed: 11/02/2022]
Abstract
In this study, two chiral Schiff base ligands (L1 and L2) were synthesized from the condensation reaction of (S)-2-amino-3-phenyl-1-propanol with 2-hydroxybenzaldehyde and 2-hydroxy-1-naphthaldehyde as metal precursors for the preparation of transition metal complexes with Pd(II), Fe(II), Ni(II) and Cu(II). The compounds were characterized by using X-ray (for L1-Pd(II)), NMR, FT-IR, UV-Vis, magnetic susceptibility, molar conductivity, and elemental analysis. The in vitro cytotoxic effects of ligands (L1 and L2) and their metal complexes on colon cancer cells (DLD-1), breast cancer cells (MDA-MB-231) and healthy lung human cell lines were investigated by using the 3-(4,5-dimethylthiazol-2-yl)-2,5‑diphenyl tetrazolium bromide (MTT) assay. Among the synthesized compounds, L1-Pd(II) was particularly found to be the most potent anticancer drug candidate in this series with IC50 values of 4.07, and 9.97 µM in DLD-1 and MDA-MB-231 cell lines, respectively. In addition, molecular docking results indicate that Glu122, Asn103, Ala104, Lys126, Phe114, Leu123, and Lys126 amino acids are the binding site of the colon cancer antigen protein, in which the most active complex, L1-Pd(II) can inhibit the current target.
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Affiliation(s)
- Eyüp Basaran
- Department of Chemistry and Chemical Processing Technologies, Vocational School of Technical Sciences, Batman University, Batman, Turkey.
| | - Hatice Gamze Sogukomerogullari
- Medical Services and Techniques Department, Vocational School of Health Services, Gaziantep University, Gaziantep, Turkey.
| | - Resit Cakmak
- Medical Laboratory Techniques Program, Vocational School of Health Services, Batman University, Batman, Turkey
| | - Senem Akkoc
- Department of Basic Pharmaceutical Sciences, Faculty of Pharmacy, Süleyman Demirel University, Isparta, Turkey; Faculty of Engineering and Natural Sciences, Bahçeşehir University, Istanbul, Turkey
| | - Tugba Taskin-Tok
- Department of Chemistry, Faculty of Science and Arts, Gaziantep University, Gaziantep, Turkey; Department of Bioinformatics and Computational Biology, Institute of Health Sciences, Gaziantep University, Gaziantep, Turkey
| | - Ayşegül Köse
- Department of Property Protection and Safety, Elbistan Vocational School, Kahramanmaras Istiklal University, Kahramanmaras, Turkey
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Ressler AJ, Brandt ON, Weaver A, Poor JE, Ream A, Summers NA, McMillen CD, Seeram NP, Dougherty WG, Henry GE. Chromene-based Schiff Base Ligand: DNA Interaction Studies and Characterization of Tetranuclear Zinc, Nickel and Iron Complexes. Inorganica Chim Acta 2022. [DOI: 10.1016/j.ica.2022.121363] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
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35
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Inan A, Sünbül AB, Çaylar M, Uruş S, Orhan Z, Köse M, Ispir E. Highly Effective Aldose Reductase Mimetics: Catalytic Transfer Hydrogenation of D-Glucose to D-Sorbitol with Novel Azo-Azomethine Based Ru(II) Complexes. J Mol Struct 2022. [DOI: 10.1016/j.molstruc.2022.134844] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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36
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Synthesis and computational investigation of N,N-dimethyl-4-[(Z)-(phenylimino)methyl] aniline derivatives: Biological and quantitative structural activity relationship studies. J Mol Struct 2022. [DOI: 10.1016/j.molstruc.2022.134756] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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37
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Novel Schiff Bases of C-Methylresorcinarene Derivatives. MOLBANK 2022. [DOI: 10.3390/m1505] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
Abstract
The article presents the synthesis and properties of two new Schiff bases of resorcinarene derivatives. The Schiff bases were obtained by the reaction of formylresorcinarene with aromatic (o-aminophenol) and aliphatic (N,N-dimethyldiaminoethane) amines in chloroform. The synthesized Schiff bases exist in equilibrium of several tautomers, as evident from the IR, UV, NMR spectra and cyclic voltammetry data analysis. In DMF, methanol, and acetonitrile, the tautomeric equilibrium is shifted toward the enol-imine tautomers.
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Biswas N, Saha S, Biswas BK, Chowdhury M, Rahaman A, Mandal DP, Bhattacharjee S, Zangrando E, Roy Choudhury R, Roy Choudhury C. Cytotoxic profile study, DNA and protein binding activity of a new dinuclear nickel(II) thiocyanato complex. J COORD CHEM 2022. [DOI: 10.1080/00958972.2022.2140408] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Niladri Biswas
- Department of Biotechnology, Institute of Genetic Engineering, Kolkata, West Bengal, India
- Department of Chemistry, West Bengal State University, Barasat, Kolkata, India
| | - Sandeepta Saha
- Department of Chemistry, West Bengal State University, Barasat, Kolkata, India
- Sripur High School, Madhyamgram Bazar, Kolkata, India
| | - Barun Kumar Biswas
- Department of Chemistry, West Bengal State University, Barasat, Kolkata, India
| | - Manas Chowdhury
- Department of Chemistry, West Bengal State University, Barasat, Kolkata, India
| | - Ashikur Rahaman
- Department of Zoology, West Bengal State University, Barasat, Kolkata, India
| | - Deba Prasad Mandal
- Department of Zoology, West Bengal State University, Barasat, Kolkata, India
| | | | - Ennio Zangrando
- Department of Chemical and Pharmaceutical Sciences, University of Trieste, Trieste, Italy
| | - Ruma Roy Choudhury
- Department of Chemistry and Environment, Heritage Institute of Technology, Anandapur, Kolkata, India
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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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40
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M. S. Costa F, Lúcia M. F. S. Saraiva M, L. C. Passos M. Ionic Liquids and Organic Salts with Antimicrobial Activity as a Strategy Against Resistant Microorganisms. J Mol Liq 2022. [DOI: 10.1016/j.molliq.2022.120750] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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41
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Li T, Qiu K, Tan Y, Jiang W. The crystal structure of (( E)-2,4-dibromo-6-(((5-(nitro)-2-oxidophenyl)imino)methyl)phenolato- κ
3
N, O, O′)tris(pyridine- κN)manganese(II), C 28H 21Br 2MnN 5O 4. Z KRIST-NEW CRYST ST 2022. [DOI: 10.1515/ncrs-2022-0425] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Abstract
C28H21Br2MnN5O4, triclinic,
P
1
‾
$P\overline{1}$
(no. 2), a = 8.9193(14) Å, b = 9.2271(15) Å, c = 17.933(3) Å, α = 103.574(2)°, β = 91.518(2)°, γ = 98.762(2)°, V = 1415.0(4) Å3, Z = 2, Rgt
(F) = 0.0347, wRref
(F
2) = 0.0864, T = 296(2) K.
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Affiliation(s)
- Ting Li
- College of Chemistry and Materials Science, Hengyang Normal University , Hengyang , Hunan 421008 , China
| | - Keying Qiu
- College of Chemistry and Materials Science, Hengyang Normal University , Hengyang , Hunan 421008 , China
| | - Yuxing Tan
- College of Chemistry and Materials Science, Hengyang Normal University , Hengyang , Hunan 421008 , China
| | - Wujiu Jiang
- College of Chemistry and Materials Science, Hengyang Normal University , Hengyang , Hunan 421008 , China
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Alfonso‐Herrera LA, Rosete‐Luna S, Hernández‐Romero D, Rivera‐Villanueva JM, Olivares‐Romero JL, Cruz‐Navarro JA, Soto‐Contreras A, Arenaza‐Corona A, Morales‐Morales D, Colorado‐Peralta R. Transition Metal Complexes with Tridentate Schiff Bases (O N O and O N N) Derived from Salicylaldehyde: An Analysis of Their Potential Anticancer Activity. ChemMedChem 2022; 17:e202200367. [PMID: 36068174 PMCID: PMC9826236 DOI: 10.1002/cmdc.202200367] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2022] [Revised: 09/05/2022] [Indexed: 01/11/2023]
Abstract
Although it is known that the first case of cancer was recorded in ancient Egypt around 1600 BC, it was not until 1917 during the First World War and the development of mustard gas that chemotherapy against cancer became relevant; however, its properties were not recognised until 1946 to later be used in patients. In this sense, the use of metallopharmaceuticals in cancer therapy was extensively explored until the 1960s with the discovery of cisplatin and its anticancer activity. From that date to the present, the search for more effective, more selective metallodrugs with fewer side effects has been an area of continuous exploration. Efforts have led to considering a wide variety of metals from the periodic table, mainly from the d-block, as well as a wide variety of organic ligands, preferably with proven biological activity. In this sense, various research groups have found an ideal binder in Schiff bases, since their raw materials are easily accessible, their synthesis conditions are friendly and their denticity can be manipulated. Therefore, in this review, we have explored the anticancer and antitumor activity reported in the literature for coordination complexes of d-block metals coordinated with tridentate Schiff bases (O N O and O N N) derived from salicylaldehyde. For this work, we have used the main scientific databases CCDC® and SciFinder®.
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Affiliation(s)
- Luis A. Alfonso‐Herrera
- Universidad Veracruzana Facultad de Ciencias QuímicasProlongación de Oriente 6, No. 100994340, OrizabaVeracruzMéxico
- Universidad Autónoma de Nuevo León Facultad de Ingeniería Civil Departamento de Ecomateriales y Energía Av. Universidad S/N Ciudad Universitaria64455San Nicolás de los GarzaNuevo LeónMéxico
| | - Sharon Rosete‐Luna
- Universidad Veracruzana Facultad de Ciencias QuímicasProlongación de Oriente 6, No. 100994340, OrizabaVeracruzMéxico
| | - Delia Hernández‐Romero
- Universidad Veracruzana Facultad de Ciencias QuímicasProlongación de Oriente 6, No. 100994340, OrizabaVeracruzMéxico
| | - José M. Rivera‐Villanueva
- Universidad Veracruzana Facultad de Ciencias QuímicasProlongación de Oriente 6, No. 100994340, OrizabaVeracruzMéxico
| | - José L. Olivares‐Romero
- Instituto de Ecología A.C. Red de Estudios Moleculares AvanzadosClúster Científico y Tecnológico BioMimic® Carretera Antigua a Coatepec, No. 35191070Xalapa, VeracruzMéxico
| | - J. Antonio Cruz‐Navarro
- Universidad Veracruzana Facultad de Ciencias QuímicasProlongación de Oriente 6, No. 100994340, OrizabaVeracruzMéxico
- Universidad Autónoma del Estado de HidalgoÁrea Académica de Química Km 4.5 Carretera Pachuca-Tulancingo42184, Mineral de la ReformaHidalgoMéxico
| | - Anell Soto‐Contreras
- Universidad Veracruzana Facultad de Ciencias QuímicasProlongación de Oriente 6, No. 100994340, OrizabaVeracruzMéxico
- Universidad VeracruzanaFacultad de Ciencias Biológicas y Agropecuarias Km 177 Camino Peñuela-Amatlán S/N94500, Peñuela, Amatlán de los ReyesVeracruzMéxico
| | - Antonino Arenaza‐Corona
- Universidad Nacional Autónoma de México Instituto de Química, Circuito Exterior S/N04510Ciudad de MéxicoMéxico
| | - David Morales‐Morales
- Universidad Nacional Autónoma de México Instituto de Química, Circuito Exterior S/N04510Ciudad de MéxicoMéxico
| | - Raúl Colorado‐Peralta
- Universidad Veracruzana Facultad de Ciencias QuímicasProlongación de Oriente 6, No. 100994340, OrizabaVeracruzMéxico
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Comprehensive Empirical Model of Substitution—Influence on Hydrogen Bonding in Aromatic Schiff Bases. Int J Mol Sci 2022; 23:ijms232012439. [DOI: 10.3390/ijms232012439] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2022] [Revised: 10/07/2022] [Accepted: 10/12/2022] [Indexed: 11/16/2022] Open
Abstract
In this work, over 500 structures of tri-ring aromatic Schiff bases with different substitution patterns were investigated to develop a unified description of the substituent effect on the intramolecular hydrogen bridge. Both proximal and distal effects were examined using Density Functional Theory (DFT) in the gas phase and with solvent reaction field (Polarizable Continuum Model (PCM) and water as the solvent). In order to investigate and characterize the non-covalent interactions, a topological analysis was performed using the Quantum Theory of Atoms In Molecules (QTAIM) theory and Non-Covalent Interactions (NCI) index. The obtained results were summarized as the generalized, empirical model of the composite substituent effect, assessed using an additional group of simple ring-based Schiff bases. The composite substituent effect has been divided into separate increments describing the different interactions of the hydrogen bridge and the substituent: the classical substituent effect, involving resonance and induction mediated through the ring, steric increment based on substituent proximity to the bridge elements, and distal increment, derived from substitution on the distal ring.
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Uluçam G, Bagcı U, Şuekinci Yılmaz A, Yentürk B. Schiff-base ligands containing phenanthroline terminals: Synthesis, characterization, biological activities and molecular docking study. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2022; 279:121429. [PMID: 35653808 DOI: 10.1016/j.saa.2022.121429] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/01/2022] [Revised: 05/18/2022] [Accepted: 05/24/2022] [Indexed: 06/15/2023]
Abstract
Three new phenanthroline-derived ligands were synthesized by the Schiff base condensation method. The first ligand was the result of 1,10-phenanthroline-2-carboxyaldehyde reaction with 1,4-diaminobutane (L1). The other ligands were obtained 1,6-diaminohexane (L2) and 1,8-diaminooctane (L3) with the phenanthroline aldehyde in separate reactions. The structures of all ligands were elucidated using spectral techniques such as FT-IR, 13C NMR, 1H NMR and LC ESI/MS. The geometric properties of ligands such as bond lengths, bond angles, dihedral angles, electronic properties, HOMO and LUMO energies were calculated by using the Gaussian 09w programme. Ligands were optimized with B3LYP and 6-311++G(2d,p) basis set and NMR and FT-IR spectra were calculated. Experimental and theoretical spectrum data were compared. All of the ligands showed antibacterial activity against Staphylococcus aureus ATCC 25923 and Bacillus cereus ATCC 11778. The anticancer activities of the ligands were also determined against human breast cancer (MCF7) and prostate cancer (DU145) cell lines. In addition, which conformation of the ligands was determined by the theoretical calculations. Docking studies of ligands with bovine serum albumin (BSA) were performed using Autock Tools 1.5.6 programme.
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Affiliation(s)
- Gühergül Uluçam
- Chemistry Department, Faculty of Science, Trakya University, 22030 Edirne, Turkey.
| | - Ufuk Bagcı
- Food Engineering Department, Faculty of Engineering, Trakya University, 22030 Edirne, Turkey
| | | | - Büşra Yentürk
- Chemistry Department, Institute of Science, Trakya University, 22030 Edirne, Turkey
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Hanif M, Kosar N, Mahmood T, Muhammad M, Ullah F, Tahir MN, Ribeiro AI, Khan E. Schiff Bases Derived from 2‐Amino‐6‐methylbenzothiazole, 2‐Amino‐5‐chloropyridine and 4‐Chlorobenzaldehyde: Structure, Computational Studies and Evaluation of Biological Activity. ChemistrySelect 2022. [DOI: 10.1002/slct.202203386] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Muhammad Hanif
- Department of Chemistry University of Malakand 18800 Chakdara Lower Dir Khyber Pakhtunkhwa Pakistan
| | - Naveen Kosar
- Department of Chemistry University of Management and Technology (UMT) C11, Johar Town Lahore Pakistan
| | - Tariq Mahmood
- Department of Chemistry College of Science University of Bahrain Main campus 32038 Sakhir, Kingdom of Bahrain
- Department of Chemistry COMSATS University Islamabad Abbottabad Campus, Abbottabad 22060 Pakistan
| | - Mian Muhammad
- Department of Chemistry University of Malakand 18800 Chakdara Lower Dir Khyber Pakhtunkhwa Pakistan
| | - Farhat Ullah
- Department of Pharmacy University of Malakand 18800 Chakdara Lower Dir Khyber Pakhtunkhwa Pakistan
| | | | - Alany Ingrid Ribeiro
- Laboratorio de Produtos Naturais Departmento de Quimica universidade Federal de sao Carlos, UFSCar Brazil
| | - Ezzat Khan
- Department of Chemistry University of Malakand 18800 Chakdara Lower Dir Khyber Pakhtunkhwa Pakistan
- Department of Chemistry College of Science University of Bahrain Main campus 32038 Sakhir, Kingdom of Bahrain
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New Bi-Nuclear Nickel(II) Complex-Based Salen Schiff Base: Synthesis, Crystal Structure, Spectroscopic, Thermal, and Electrical Investigations. CHEMISTRY 2022. [DOI: 10.3390/chemistry4040080] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
Abstract
In this study, a new bi-nuclear nickel complex [Ni2HL2(EtOH)2](Cl)(EtOH) of a Schiff base ligand, 2-[3-[2-hydroxybenzylideneamino]propyliminomethyl]phenol, was synthesized and characterized using UV/Vis, IR, HRMS, and TGA/DTA analysis. The molecular structure of the obtained complex was corroborated by the single crystal X-ray diffraction technique. It was found in the complex that two molecules of the ligand coordinate with two nickel atoms through azomethine-N and phenoxy-O, resulting in 6-coordinate distorted octahedral geometry, in which two ethanol molecules occupy the axial positions. The dielectric and electrical properties of the obtained samples were studied by impedance spectroscopy at different frequencies (from 1 Hz to 1 MHz) in the temperature range 298–343 K. It is found that the electrical conductivity of the Ni(II) complex is lower than that of the free ligand H2L, suggesting that the complexation traps the charge carriers contained in the ligand.
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Patil PR, Javarappa R, Kumar AC, Naik N. Synthesis of Co(II), Ni(II) and Zn(II) Metal Complexes Derived from a Hydrazone Schiff Base: Electrochemical Behavior and Comprehensive Biological Studies. ChemistrySelect 2022. [DOI: 10.1002/slct.202200752] [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]
Affiliation(s)
- Priyanka R. Patil
- Department of Studies in Chemistry University of Mysore, Manasagangotri Mysuru 570006, Karnataka India
| | - Rangaswamy Javarappa
- Department of Chemistry, Poornaprajna College Shri Admar Mutt Education Council Mangalore University Udupi 576101, Karnataka India
| | - A. C. Kumar
- Department of Studies in Chemistry University of Mysore, Manasagangotri Mysuru 570006, Karnataka India
| | - Nagaraja Naik
- Department of Studies in Chemistry University of Mysore, Manasagangotri Mysuru 570006, Karnataka India
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Diana R, Gentile FS, Carella A, Di Costanzo L, Panunzi B. Insights into Two Novel Orthopalladated Chromophores with Antimicrobial Activity against Escherichia coli. Molecules 2022; 27:molecules27186060. [PMID: 36144794 PMCID: PMC9504776 DOI: 10.3390/molecules27186060] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2022] [Revised: 09/05/2022] [Accepted: 09/13/2022] [Indexed: 11/16/2022] Open
Abstract
Advanced chromophoric tools, besides being biologically active, need to meet the expectations of the technological demands including stability, colour retention, and proper solubility for their target. Many coordination compounds of conjugated ligands are antibacterial dyes, able to combine a strong dyeing performance with a useful biological activity. Specifically, palladium (II) complexes of Schiff base ligands are known for their relevant activity against common bacteria. In this article, we report the synthesis and comprehensive experimental and theoretical characterization of two novel Pd(II) chromophore complexes obtained from a cyclopalladated Schiff base as two different chelating azo dyes. The antibacterial response of these two novel complexes was tested against the ubiquitous Escherichia coli bacterium in an aqueous medium and revealed a noteworthy antimicrobial activity, higher than when compared with their uncoordinated biologically active ligands.
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Affiliation(s)
- Rosita Diana
- Department of Agricultural Sciences, University of Naples Federico II, Via Università, 100, 80055 Portici, Italy
| | - Francesco Silvio Gentile
- Department of Pharmacy, University of Salerno, Via Giovanni Paolo II, 132, 84084 Fisciano, Italy
| | - Antonio Carella
- Department of Chemical Sciences, University of Napoli Federico II, Strada Comunale Cinthia, 26, 80126 Napoli, Italy
| | - Luigi Di Costanzo
- Department of Agricultural Sciences, University of Naples Federico II, Via Università, 100, 80055 Portici, Italy
| | - Barbara Panunzi
- Department of Agricultural Sciences, University of Naples Federico II, Via Università, 100, 80055 Portici, Italy
- Correspondence:
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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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Kr Mandal N, Bandyopadhyay N, Arya P, Chowdhury S, Raghav N, Prakash Naskar J. Synthesis, characterization, structure, in vitro enzymatic activity and sensing aspects of a copper(II) complex stabilized from a naphthaldehyde based Schiff base ligand. Inorganica Chim Acta 2022. [DOI: 10.1016/j.ica.2022.121229] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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