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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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Branković J, Matejić V, Simijonović D, Vukić MD, Kačaniova M, Živanović M, Mirić A, Košarić J, Branković M, Petrović VP. Novel N-pyrocatechoyl and N-pyrogalloyl hydrazone antioxidants endowed with cytotoxic and antibacterial activity. Arch Pharm (Weinheim) 2024; 357:e2300725. [PMID: 38346258 DOI: 10.1002/ardp.202300725] [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: 12/11/2023] [Revised: 01/16/2024] [Accepted: 01/18/2024] [Indexed: 05/08/2024]
Abstract
Over the years, pharmacological agents bearing antioxidant merits arose as beneficial in the prophylaxis and treatment of various health conditions. Hazardous effects of radical species hyperproduction disrupt normal cell functioning, thus increasing the possibility for the development of various oxidative stress-associated disorders, such as cancer. Contributing to the efforts for efficient antioxidant drug discovery, a thorough in vitro and in silico assessment of antioxidant properties of 14 newly synthesized N-pyrocatechoyl and N-pyrogalloyl hydrazones (N-PYRs) was accomplished. All compounds exhibited excellent antioxidant potency against the 2,2-diphenyl-1-picrylhydrazyl (DPPH) radical. The extensive in silico analysis revealed multiple favorable features of N-PYRs to inactivate harmful radical species, which supported the obtained in vitro results. Also, in silico experiments provided insights into the preferable antioxidant pathways. Prompted by these findings, the cytotoxicity effects and the influence on the redox status of cancer HCT-116 cells and healthy fibroblasts MRC-5 were evaluated. These investigations exposed four analogs exhibiting both cytotoxicity and selectivity toward cancer cells. Furthermore, the frequently uncovered antimicrobial potency of hydrazone-type hybrids encouraged investigations on G+ and G- bacterial strains, which revealed the antibacterial potency of several N-PYRs. These findings highlighted the N-PYRs as excellent antioxidant agents endowed with cytotoxic and antibacterial features.
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Affiliation(s)
- Jovica Branković
- Department of Chemistry, Faculty of Science, University of Kragujevac, Kragujevac, Serbia
| | - Vesna Matejić
- Department of Chemistry and Chemical Engineering, Faculty of Agronomy, University of Kragujevac, Čačak, Serbia
| | - Dušica Simijonović
- Institute for Information Technologies Kragujevac, University of Kragujevac, Kragujevac, Serbia
| | - Milena D Vukić
- Department of Chemistry, Faculty of Science, University of Kragujevac, Kragujevac, Serbia
- Institute of Horticulture, Faculty of Horticulture and Landscape Engineering, Slovak University of Agriculture, Nitra, Slovakia
| | - Miroslava Kačaniova
- Institute of Horticulture, Faculty of Horticulture and Landscape Engineering, Slovak University of Agriculture, Nitra, Slovakia
| | - Marko Živanović
- Institute for Information Technologies Kragujevac, University of Kragujevac, Kragujevac, Serbia
| | - Ana Mirić
- Institute for Information Technologies Kragujevac, University of Kragujevac, Kragujevac, Serbia
| | - Jelena Košarić
- Institute for Information Technologies Kragujevac, University of Kragujevac, Kragujevac, Serbia
| | - Marija Branković
- Institute for Information Technologies Kragujevac, University of Kragujevac, Kragujevac, Serbia
- Faculty of Engineering, University of Kragujevac, Kragujevac, Serbia
| | - Vladimir P Petrović
- Department of Chemistry, Faculty of Science, University of Kragujevac, Kragujevac, Serbia
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Sun Y, Feng JX, Wei ZB, Sun H, Li L, Zhu JY, Xia GQ, Zang H. Phytochemical Analysis, Antioxidant Activities In Vitro and In Vivo, and Theoretical Calculation of Different Extracts of Euphorbia fischeriana. Molecules 2023; 28:5172. [PMID: 37446834 DOI: 10.3390/molecules28135172] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2023] [Revised: 06/28/2023] [Accepted: 06/30/2023] [Indexed: 07/15/2023] Open
Abstract
Euphorbia fischeriana has a long-standing history of use in traditional medicine for the treatment of tuberculosis diseases. However, the plant's therapeutic potential extends beyond this specific ailment. The present study aimed to investigate the antioxidant properties of Euphorbia fischeriana and lay the groundwork for further research on its potential therapeutic applications. Phytochemical tests were performed on the plant, and 11 types of phytochemicals were identified. Ultraviolet-visible spectrophotometry was used to evaluate the active components and antioxidant properties of eight different solvent extracts, ultimately selecting acetone extract for further research. UHPLC-ESI-Q-TOF-MS identified 43 compounds in the acetone extract, and chemical calculations were used to isolate those with high content and antioxidant activity. Three stability experiments confirmed the extract's stability, while cell viability and oral acute toxicity studies demonstrated its relatively low toxicity. In rats, the acetone extract showed significant protective effects against D-galactosamine-induced liver damage through histopathological examination and biochemical analysis. These results suggest that Euphorbia fischeriana's acetone extract has potential in treating diseases related to oxidative imbalances. Therefore, this study highlights the plant's potential therapeutic applications while providing insight into its antioxidant properties.
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Affiliation(s)
- Yue Sun
- College of Pharmacy, Yanbian University, Yanji 133000, China
- Green Medicinal Chemistry Laboratory, School of Pharmacy and Medicine, Tonghua Normal University, Tonghua 134002, China
| | - Jia-Xin Feng
- College of Pharmacy, Yanbian University, Yanji 133000, China
- Green Medicinal Chemistry Laboratory, School of Pharmacy and Medicine, Tonghua Normal University, Tonghua 134002, China
| | - Zhong-Bao Wei
- Institute of Scientific and Technical Information of Jilin, Changchun 130033, China
| | - Hui Sun
- Green Medicinal Chemistry Laboratory, School of Pharmacy and Medicine, Tonghua Normal University, Tonghua 134002, China
| | - Li Li
- College of Pharmacy, Yanbian University, Yanji 133000, China
- Green Medicinal Chemistry Laboratory, School of Pharmacy and Medicine, Tonghua Normal University, Tonghua 134002, China
| | - Jun-Yi Zhu
- Green Medicinal Chemistry Laboratory, School of Pharmacy and Medicine, Tonghua Normal University, Tonghua 134002, China
- Key Laboratory of Evaluation and Application of Changbai Mountain Biological Gerplasm Resources of Jilin Province, Tonghua 134002, China
| | - Guang-Qing Xia
- College of Pharmacy, Yanbian University, Yanji 133000, China
- Green Medicinal Chemistry Laboratory, School of Pharmacy and Medicine, Tonghua Normal University, Tonghua 134002, China
- Key Laboratory of Evaluation and Application of Changbai Mountain Biological Gerplasm Resources of Jilin Province, Tonghua 134002, China
| | - Hao Zang
- College of Pharmacy, Yanbian University, Yanji 133000, China
- Green Medicinal Chemistry Laboratory, School of Pharmacy and Medicine, Tonghua Normal University, Tonghua 134002, China
- Key Laboratory of Evaluation and Application of Changbai Mountain Biological Gerplasm Resources of Jilin Province, Tonghua 134002, China
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Sharma S, Vashishtha M. Evaluation of optimized molecular structure-antimicrobial and antioxidant efficacy relationship of Schiff bases. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:20874-20886. [PMID: 36260232 DOI: 10.1007/s11356-022-23633-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/29/2022] [Accepted: 10/10/2022] [Indexed: 06/16/2023]
Abstract
The synthesis, reactivity, structure, antimicrobial potential, and antioxidant property of some Schiff bases were extensively studied experimentally and theoretically using the B3LYP method of DFT (density functional theory). Schiff bases formed with the interaction of salicylaldehyde and amino alcohols in a 1:1 molar ratio in ethanol. The physicochemical and spectroscopic investigations decide the plausible structure of these newly synthesized Schiff bases. The computational study can assess the molecular orbitals, chemical reactivity, stability, and molecular electrostatic potential of Schiff bases. The thermodynamic parameters and optimized structures of Schiff bases in the gaseous state investigated by the B3LYP method of DFT. The evaluation of Schiff bases possesses antimicrobial resistance against gram-negative (Pseudomonas aeruginosa) and (Bacillus cereus)gram-positive bacterial strains as well as fungal strains (Candida albicans and Penicillium chrysogeum). The MIC (minimum inhibitory concentration) of all Schiff bases against Bacillus cereus was found in the range of 250 to 1200 µg. The MIC values of L1H, L2H, and L3H against Penicillium chrysogeum were 400, 600, and 800 µg, respectively, whereas the MIC value of L1H against Candida albicans was 600 µg. The free radical scavenging activity by the DPPH method was used to access potential antioxidant activity in Schiff bases.
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Affiliation(s)
- Shobhana Sharma
- Department of Chemistry, S.S. Jain Subodh P.G. College, Jaipur, 302004, India
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Branković J, Milovanović VM, Petrović ZD, Simijonović D, Petrović VP. Pyrazolone-type compounds (part II): in vitro and in silico evaluation of antioxidant potential; structure-activity relationship. RSC Adv 2023; 13:2884-2895. [PMID: 36756409 PMCID: PMC9846718 DOI: 10.1039/d2ra08280b] [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: 12/28/2022] [Accepted: 01/12/2023] [Indexed: 01/19/2023] Open
Abstract
The pyrazolone class comprises a variety of hybrid compounds displaying diverse biological actions. Although studied for decades, these compounds are still of interest due to their facile chemical transformations. In our previous work, we presented the synthetic route of functionalised pyrazolone derivatives. The presence of pyrazolone structural motif in many drugs, such as edaravone, prompted us to investigate the antioxidant features of the selected compounds. In this paper, we provide an extensive in vitro and in silico description of the antioxidant properties of selected pyrazolone analogues. The obtained in vitro results revealed their great antiradical potency against the DPPH radical (IC50 values in the 2.6-7.8 μM range), where the best results were obtained for analogues bearing a catechol moiety. Density functional theory (DFT) was used to assess their antioxidant capacity from the thermodynamic aspect. Here, good agreement with in vitro results was achieved. DFT was employed for the prediction of the most preferable radical scavenging pathway, also. In polar solvents, the SPLET mechanism is a favourable scavenging route, whereas in nonpolar solvents the HAT is slightly predominant. Furthermore, antioxidant mechanisms were studied in the presence of relevant reactive oxygen species. The obtained values of the reaction enthalpies with the selected radicals revealed that HAT is slightly prevailing in polar solvents, while the SPLET mechanism is dominant in nonpolar solvents. Regarding the well-known antioxidant features of the drug edaravone, these findings represent valuable data for this pyrazolone class and could be used as the basis for further investigations.
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Affiliation(s)
- Jovica Branković
- University of Kragujevac, Faculty of Science, Department of Chemistry R. Domanovića 12 34000 Kragujevac Serbia
| | - Vesna M. Milovanović
- University of Kragujevac, Faculty of Agronomy, Department of Chemistry and Chemical EngineeringCara Dušana 3432000 ČačakSerbia
| | - Zorica D. Petrović
- University of Kragujevac, Faculty of Science, Department of ChemistryR. Domanovića 1234000 KragujevacSerbia
| | - Dušica Simijonović
- University of Kragujevac, Institute for Information Technologies, Department of ScienceJovana Cvijića bb34000 KragujevacSerbia
| | - Vladimir P. Petrović
- University of Kragujevac, Faculty of Science, Department of ChemistryR. Domanovića 1234000 KragujevacSerbia
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6
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Synthesis and Structural investigation of o-Vanillin scaffold Schiff base metal complexes: Biomolecular interaction and molecular docking studies. J Mol Liq 2022. [DOI: 10.1016/j.molliq.2022.120941] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/02/2022]
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Ashikari T, Hachisu M, Nagata K, Ando D, Iizuka Y, Ito N, Ito K, Ikeda Y, Matsubara H, Yashiro T, Kasakura K, Nishiyama C. Salicylaldehyde Suppresses IgE-Mediated Activation of Mast Cells and Ameliorates Anaphylaxis in Mice. Int J Mol Sci 2022; 23:ijms23158826. [PMID: 35955959 PMCID: PMC9368859 DOI: 10.3390/ijms23158826] [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: 07/01/2022] [Revised: 08/05/2022] [Accepted: 08/05/2022] [Indexed: 11/16/2022] Open
Abstract
Mast cells (MCs) play key roles in IgE-mediated immunoresponses, including in the protection against parasitic infections and the onset and/or symptoms of allergic diseases. IgE-mediated activation induces MCs to release mediators, including histamine and leukotriene, as an early response, and to produce cytokines as a late phase response. Attempts have been made to identify novel antiallergic compounds from natural materials such as Chinese medicines and food ingredients. We herein screened approximately 60 compounds and identified salicylaldehyde, an aromatic aldehyde isolated from plant essential oils, as an inhibitor of the IgE-mediated activation of MCs. A degranulation assay, flow cytometric analyses, and enzyme-linked immunosorbent assays revealed that salicylaldehyde inhibited the IgE-mediated degranulation and cytokine expression of bone-marrow-derived MCs (BMMCs). The salicylaldehyde treatment reduced the surface expression level of FcεRI, the high affinity receptor for IgE, on BMMCs, and suppressed the IgE-induced phosphorylation of tyrosine residues in intercellular proteins, possibly Lyn, Syk, and Fyn, in BMMCs. We also examined the effects of salicylaldehyde in vivo using passive anaphylaxis mouse models and found that salicylaldehyde administration significantly enhanced the recovery of a reduced body temperature due to systemic anaphylaxis and markedly suppressed ear swelling, footpad swelling, and vascular permeability in cutaneous anaphylaxis.
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8
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Ermiş E, Ermiş T, Şahiner A. Synthesis, characterization of (E)-3-((2‑hydroxy-5-(thiophen-2-yl)benzylidene)amino)benzonitrile and optimization of its energy by Fuzzy Logic Modelling. J Mol Struct 2022. [DOI: 10.1016/j.molstruc.2022.133056] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Mondal SS, Jaiswal N, Tripathy RK, Bera PS, Chanda N, Behera JN, Ghosal S, Saha TK. Monosaccharide Linked Schiff Base Metal Complexes of Cu(II), Zn(II) and Mn(II): Exploring the Antiproliferative Activity and Cell Death Mechanism. ChemistrySelect 2022. [DOI: 10.1002/slct.202200060] [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)
- Shyam Sundar Mondal
- Department of Chemistry National Institute of Technology Durgapur Durgapur 713209 West Bengal India
| | - Namita Jaiswal
- Department of Biotechnology National Institute of Technology Durgapur Durgapur 713209 West Bengal India
| | - Rajat Kumar Tripathy
- School of Chemical Sciences National Institute of Science Education and Research Bhubaneswar 752050 Odisha India
- Homi Bhabha National Institute Mumbai 400094 India
| | - Partha Sarathi Bera
- Department of Chemistry National Institute of Technology Durgapur Durgapur 713209 West Bengal India
| | - Nripen Chanda
- Department of Materials Processing and Microsystems Laboratory CSIR-Central Mechanical Engineering Research Institute Durgapur 713209 West Bengal India
| | - J. N. Behera
- School of Chemical Sciences National Institute of Science Education and Research Bhubaneswar 752050 Odisha India
- Homi Bhabha National Institute Mumbai 400094 India
| | - Subhas Ghosal
- Department of Chemistry National Institute of Technology Durgapur Durgapur 713209 West Bengal India
| | - Tanmoy Kumar Saha
- Department of Chemistry National Institute of Technology Durgapur Durgapur 713209 West Bengal India
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Branković J, Milivojević N, Milovanović V, Simijonović D, Petrović ZD, Marković Z, Šeklić DS, Živanović MN, Vukić MD, Petrović VP. Evaluation of antioxidant and cytotoxic properties of phenolic N-acylhydrazones: structure-activity relationship. ROYAL SOCIETY OPEN SCIENCE 2022; 9:211853. [PMID: 35706666 PMCID: PMC9174720 DOI: 10.1098/rsos.211853] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/26/2021] [Accepted: 05/06/2022] [Indexed: 05/03/2023]
Abstract
Cancer is still a relentless public health issue. Particularly, colorectal cancer is the third most prevalent cancer in men and the second in women. Moreover, cancer development and growth are associated with various cell disorders, such as oxidative stress and inflammation. The quest for efficient therapeutics is a challenging task, especially when it comes to achieving both cytotoxicity and selectivity. Herein, five series of phenolic N-acylhydrazones were synthesized and evaluated for their antioxidant potency, as well as their influence on HCT-116 and MRC-5 cells viability. Among 40 examined analogues, 20 of them expressed antioxidant activity against the DPPH radical. Furthermore, density functional theory was employed to estimate the antioxidant potency of the selected analogues from the thermodynamical aspect, as well as the preferable free-radical scavenging pathway. Cytotoxicity assay exposed enhanced selectivity of a number of analogues toward cancer cells. The structure-activity analysis revealed the impact of the type and position of the functional groups on both cell viability and selectivity toward cancer cells.
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Affiliation(s)
- Jovica Branković
- University of Kragujevac, Faculty of Science, Department of Chemistry, R. Domanovića 12, 34000 Kragujevac, Serbia
| | - Nevena Milivojević
- University of Kragujevac, Institute for Information Technologies, Kragujevac, Department of Science, Jovana Cvijića bb, 34000 Kragujevac, Serbia
| | - Vesna Milovanović
- University of Kragujevac, Faculty of Agronomy in Čačak, Ljubićska 30, Čačak, Serbia
| | - Dušica Simijonović
- University of Kragujevac, Institute for Information Technologies, Kragujevac, Department of Science, Jovana Cvijića bb, 34000 Kragujevac, Serbia
| | - Zorica D. Petrović
- University of Kragujevac, Faculty of Science, Department of Chemistry, R. Domanovića 12, 34000 Kragujevac, Serbia
| | - Zoran Marković
- University of Kragujevac, Institute for Information Technologies, Kragujevac, Department of Science, Jovana Cvijića bb, 34000 Kragujevac, Serbia
| | - Dragana S. Šeklić
- University of Kragujevac, Institute for Information Technologies, Kragujevac, Department of Science, Jovana Cvijića bb, 34000 Kragujevac, Serbia
| | - Marko N. Živanović
- University of Kragujevac, Institute for Information Technologies, Kragujevac, Department of Science, Jovana Cvijića bb, 34000 Kragujevac, Serbia
| | - Milena D. Vukić
- University of Kragujevac, Faculty of Science, Department of Chemistry, R. Domanovića 12, 34000 Kragujevac, Serbia
| | - Vladimir P. Petrović
- University of Kragujevac, Faculty of Science, Department of Chemistry, R. Domanovića 12, 34000 Kragujevac, Serbia
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Antioxidant and cytotoxic activities of selected salicylidene imines: experimental and computational study. Mol Divers 2022; 26:3115-3128. [PMID: 35147861 DOI: 10.1007/s11030-021-10370-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2021] [Accepted: 12/15/2021] [Indexed: 10/19/2022]
Abstract
Selected salicylidene imines were evaluated for their antioxidant and cytotoxic potentials. Several of them exerted potent scavenging capacity towards ABTS radical and hydrogen peroxide. The insight into the preferable antioxidative mechanism was reached employing density functional theory. In the absence of free radicals, the SPLET mechanism is dominant in polar surroundings, while HAT is prevailing in a non-polar environment. The results obtained for the reactions of the most active compounds with some medically relevant radicals pointed out competition between HAT and SPLET mechanisms. The assessment of their cytotoxic properties revealed inhibition of ER-a human breast adenocarcinoma cells or estrogen-independent prostate cancer cells. Molecular docking study with the cyclooxygenase (COX) 2 enzyme was performed to examine the most probable bioactive conformations and possible interactions between the tested derivatives and COX-2 binding pocket.
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12
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Kadam SS, Gotarne RP, Shinde MN, Mane VS, Khan AA, Kumbhar AA. Fe(III), Co(II), Ni(II), Cu(II) and Zn(II) complexes of Fluorophore-Anchored Asymmetric Thiocarbohydrazone: Synthesis, Characterization and Biological Studies. Inorganica Chim Acta 2022. [DOI: 10.1016/j.ica.2022.120887] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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13
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Rocha IO, Kappenberg YG, Rosa WC, Frizzo CP, Zanatta N, Martins MAP, Tisoco I, Iglesias BA, Bonacorso HG. Photophysical, photostability, and ROS generation properties of new trifluoromethylated quinoline-phenol Schiff bases. Beilstein J Org Chem 2021; 17:2799-2811. [PMID: 34925619 PMCID: PMC8649202 DOI: 10.3762/bjoc.17.191] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2021] [Accepted: 11/19/2021] [Indexed: 11/23/2022] Open
Abstract
A new series of ten examples of Schiff bases, namely (E)-2-(((2-alkyl(aryl/heteroaryl)-4-(trifluoromethyl)quinolin-6-yl)imino)methyl)phenols 3, was easily synthesized with yields of up to 91% from the reactions involving a series of 2-(R-substituted) 6-amino-4-(trifluoromethyl)quinolines 1 and 4(5)-R1-substituted salicylaldehydes 2 - in which alkyl/aryl/heteroaryl for 2-R-substituents are Me, Ph, 4-MeC6H4, 4-FC6H4, 4-NO2C6H4, and 2-furyl, and R1-substituents are 5-NEt2, 5-OCH3, 4-Br, and 4-NO2. Complementarily, the Schiff bases showed low to good quantum fluorescence yield values in CHCl3 (Φf = 0.12-0.80), DMSO (Φf = 0.20-0.75) and MeOH (Φf = 0.13-0.85). Higher values of Stokes shifts (SS) were observed in more polar solvents (DMSO; 65-150 nm and MeOH; 65-130 nm) than in CHCl3 (59-85 nm). Compounds 3 presented good stability under white-LED irradiation conditions and moderate ROS generation properties were observed.
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Affiliation(s)
- Inaiá O Rocha
- 1Núcleo de Química de Heterociclos (NUQUIMHE), Departamento de Química, Universidade Federal de Santa Maria, Santa Maria, RS, 97105-900, Brazil
| | - Yuri G Kappenberg
- 1Núcleo de Química de Heterociclos (NUQUIMHE), Departamento de Química, Universidade Federal de Santa Maria, Santa Maria, RS, 97105-900, Brazil
| | - Wilian C Rosa
- 1Núcleo de Química de Heterociclos (NUQUIMHE), Departamento de Química, Universidade Federal de Santa Maria, Santa Maria, RS, 97105-900, Brazil
| | - Clarissa P Frizzo
- 1Núcleo de Química de Heterociclos (NUQUIMHE), Departamento de Química, Universidade Federal de Santa Maria, Santa Maria, RS, 97105-900, Brazil
| | - Nilo Zanatta
- 1Núcleo de Química de Heterociclos (NUQUIMHE), Departamento de Química, Universidade Federal de Santa Maria, Santa Maria, RS, 97105-900, Brazil
| | - Marcos A P Martins
- 1Núcleo de Química de Heterociclos (NUQUIMHE), Departamento de Química, Universidade Federal de Santa Maria, Santa Maria, RS, 97105-900, Brazil
| | - Isadora Tisoco
- 1Núcleo de Química de Heterociclos (NUQUIMHE), Departamento de Química, Universidade Federal de Santa Maria, Santa Maria, RS, 97105-900, Brazil.,Laboratório de Bioinorgânica e Materiais Porfirínicos, Departamento de Química, Universidade Federal de Santa Maria, Santa Maria, RS, 97105-900, Brazil
| | - Bernardo A Iglesias
- 1Núcleo de Química de Heterociclos (NUQUIMHE), Departamento de Química, Universidade Federal de Santa Maria, Santa Maria, RS, 97105-900, Brazil.,Laboratório de Bioinorgânica e Materiais Porfirínicos, Departamento de Química, Universidade Federal de Santa Maria, Santa Maria, RS, 97105-900, Brazil
| | - Helio G Bonacorso
- 1Núcleo de Química de Heterociclos (NUQUIMHE), Departamento de Química, Universidade Federal de Santa Maria, Santa Maria, RS, 97105-900, Brazil
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Lončar A, Negrojević L, Dimitrić-Marković J, Dimić D. The reactivity of neurotransmitters and their metabolites towards various nitrogen-centered radicals: Experimental, theoretical, and biotoxicity evaluation. Comput Biol Chem 2021; 95:107573. [PMID: 34562727 DOI: 10.1016/j.compbiolchem.2021.107573] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2021] [Revised: 08/20/2021] [Accepted: 09/05/2021] [Indexed: 11/24/2022]
Abstract
In the past few years, there has been a certain interest in nitrogen-centered radicals, biologically important radicals that play a vital role in various processes and constitute many important biological molecules. In this paper, there was an attempt to bridge a gap in the literature that concerns the antiradical potency of monoamine neurotransmitters (dopamine, epinephrine, and norepinephrine) and their metabolites towards these radicals. The most probable radical quenching mechanism was determined for each radical out of three common mechanisms, namely Hydrogen Atom Transfer (HAT), Single Electron Transfer followed by the Proton Transfer (SET-PT), and Sequential Proton Loss Electron Transfer (SPLET). Marcus' theory was then used to determine the reaction rates for the electron transfer process. SPLET was the most probable mechanism for both reactions with the aminyl and hydrazyl radicals, while HAT and SPLET were plausible mechanisms for reactions with the imidazolyl radical. Special emphasis was put on the investigation of the substituent effect on the preferred mechanism. The necessity of both thermodynamic and kinetic parameters for the comparison of the antiradical potency of compounds was discussed. The same methodology was applied for the theoretical investigation of the reactivity towards DPPH⦁, a member of the hydrazyl radicals. An ecotoxicity analysis was performed to assess the impact the investigated radicals have on the ecosystem. Except for histidine, every other neutral form was either toxic or highly toxic to some of the analyzed marine organisms.
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Affiliation(s)
- Aleksandar Lončar
- Faculty of Physical Chemistry, University of Belgrade, Studentski Trg 12-16, 11000 Belgrade, Serbia
| | - Luka Negrojević
- Faculty of Physical Chemistry, University of Belgrade, Studentski Trg 12-16, 11000 Belgrade, Serbia
| | | | - Dušan Dimić
- Faculty of Physical Chemistry, University of Belgrade, Studentski Trg 12-16, 11000 Belgrade, Serbia.
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15
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Abdel-Aziz AAM, El-Azab AS, AlSaif NA, Obaidullah AJ, Al-Obaid AM, Al-Suwaidan IA. Synthesis, potential antitumor activity, cell cycle analysis, and multitarget mechanisms of novel hydrazones incorporating a 4-methylsulfonylbenzene scaffold: a molecular docking study. J Enzyme Inhib Med Chem 2021; 36:1521-1539. [PMID: 34266349 PMCID: PMC8288134 DOI: 10.1080/14756366.2021.1924698] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
Abstract
Hydrazone is a bioactive pharmacophore that can be used to design antitumor agents. We synthesised a series of hydrazones (compounds 4–24) incorporating a 4-methylsulfonylbenzene scaffold and analysed their potential antitumor activity. Compounds 6, 9, 16, and 20 had the most antitumor activity with a positive cytotoxic effect (PCE) of 52/59, 27/59, 59/59, and 59/59, respectively, while compounds 5, 10, 14, 15, 18, and 19 had a moderate antitumor activity with a PCE of 11/59–14/59. Compound 20 was the most active and had a mean 50% cell growth inhibition (GI50) of 0.26 µM. Compounds 9 and 20 showed the highest inhibitory activity against COX-2, with a half-maximal inhibitory concentration (IC50) of 2.97 and 6.94 μM, respectively. Compounds 16 and 20 significantly inhibited EGFR (IC50 = 0.2 and 0.19 μM, respectively) and HER2 (IC50 = 0.13 and 0.07 μM, respectively). Molecular docking studies of derivatives 9, 16, and 20 into the binding sites of COX-2, EGFR, and HER2 were carried out to explore the interaction mode and the structural requirements for antitumor activity.
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Affiliation(s)
- Alaa A-M Abdel-Aziz
- Department of Pharmaceutical Chemistry, College of Pharmacy, King Saud University, Riyadh Saudi Arabia
| | - Adel S El-Azab
- Department of Pharmaceutical Chemistry, College of Pharmacy, King Saud University, Riyadh Saudi Arabia
| | - Nawaf A AlSaif
- Department of Pharmaceutical Chemistry, College of Pharmacy, King Saud University, Riyadh Saudi Arabia
| | - Ahmad J Obaidullah
- Department of Pharmaceutical Chemistry, College of Pharmacy, King Saud University, Riyadh Saudi Arabia
| | - Abdulrahman M Al-Obaid
- Department of Pharmaceutical Chemistry, College of Pharmacy, King Saud University, Riyadh Saudi Arabia
| | - Ibrahim A Al-Suwaidan
- Department of Pharmaceutical Chemistry, College of Pharmacy, King Saud University, Riyadh Saudi Arabia
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16
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Antonijević MR, Simijonović DM, Avdović EH, Ćirić A, Petrović ZD, Marković JD, Stepanić V, Marković ZS. Green One-Pot Synthesis of Coumarin-Hydroxybenzohydrazide Hybrids and Their Antioxidant Potency. Antioxidants (Basel) 2021; 10:1106. [PMID: 34356339 PMCID: PMC8301024 DOI: 10.3390/antiox10071106] [Citation(s) in RCA: 29] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2021] [Revised: 07/06/2021] [Accepted: 07/07/2021] [Indexed: 11/16/2022] Open
Abstract
Compounds from the plant world that possess antioxidant abilities are of special importance for the food and pharmaceutical industry. Coumarins are a large, widely distributed group of natural compounds, usually found in plants, often with good antioxidant capacity. The coumarin-hydroxybenzohydrazide derivatives were synthesized using a green, one-pot protocol. This procedure includes the use of an environmentally benign mixture (vinegar and ethanol) as a catalyst and solvent, as well as very easy isolation of the desired products. The obtained compounds were structurally characterized by IR and NMR spectroscopy. The purity of all compounds was determined by HPLC and by elemental microanalysis. In addition, these compounds were evaluated for their in vitro antioxidant activity. Mechanisms of antioxidative activity were theoretically investigated by the density functional theory approach and the calculated values of various thermodynamic parameters, such as bond dissociation enthalpy, proton affinity, frontier molecular orbitals, and ionization potential. In silico calculations indicated that hydrogen atom transfer and sequential proton loss-electron transfer reaction mechanisms are probable, in non-polar and polar solvents respectively. Additionally, it was found that the single-electron transfer followed by proton transfer was not an operative mechanism in either solvent. The conducted tests indicate the excellent antioxidant activity, as well as the low potential toxicity, of the investigated compounds, which makes them good candidates for potential use in food chemistry.
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Affiliation(s)
- Marko R. Antonijević
- Department of Science, Institute for Information Technologies, University of Kragujevac, Jovana Cvijića bb, 34000 Kragujevac, Serbia; (M.R.A.); (D.M.S.)
- Department of Chemistry, Faculty of Science, University of Kragujevac, Radoja Domanovića 12, 34000 Kragujevac, Serbia; (A.Ć.); (Z.D.P.)
| | - Dušica M. Simijonović
- Department of Science, Institute for Information Technologies, University of Kragujevac, Jovana Cvijića bb, 34000 Kragujevac, Serbia; (M.R.A.); (D.M.S.)
| | - Edina H. Avdović
- Department of Science, Institute for Information Technologies, University of Kragujevac, Jovana Cvijića bb, 34000 Kragujevac, Serbia; (M.R.A.); (D.M.S.)
| | - Andrija Ćirić
- Department of Chemistry, Faculty of Science, University of Kragujevac, Radoja Domanovića 12, 34000 Kragujevac, Serbia; (A.Ć.); (Z.D.P.)
| | - Zorica D. Petrović
- Department of Chemistry, Faculty of Science, University of Kragujevac, Radoja Domanovića 12, 34000 Kragujevac, Serbia; (A.Ć.); (Z.D.P.)
| | - Jasmina Dimitrić Marković
- Faculty of Physical Chemistry, University of Belgrade, Studentski trg 12-16, 11000 Belgrade, Serbia;
| | - Višnja Stepanić
- Ruđer Bošković Institute, Bijenička Cesta 54, 10000 Zagreb, Croatia;
| | - Zoran S. Marković
- Department of Science, Institute for Information Technologies, University of Kragujevac, Jovana Cvijića bb, 34000 Kragujevac, Serbia; (M.R.A.); (D.M.S.)
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17
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Rafiee Samani Z, Mehranpour A. Synthesis of new allylidene amino phenol-containing Schiff bases and metal complex formation using trimethinium salts. RSC Adv 2021; 11:21695-21701. [PMID: 35478780 PMCID: PMC9034104 DOI: 10.1039/d1ra04214a] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2021] [Accepted: 06/14/2021] [Indexed: 02/03/2023] Open
Abstract
An efficient route for the synthesis of novel Schiff bases from the condensation reaction of 2-substituted 1,3-bis(dimethylamino)-trimethinium salts with diverse aminophenols in the presence of triethylamine in EtOH at reflux is described. Complexes of transition metals with Schiff base ligand (L) 3c, having the donor atom set N2O2, were studied. The ultraviolet spectral behavior of the complexes in DMSO was investigated and the λmax of these compounds was examined. The structure of the new compounds was confirmed based on their spectral data from IR, 1H NMR and 13C NMR, mass spectra, and elemental analysis. An efficient route for the synthesis of novel Schiff bases from the condensation reaction of 2-substituted 1,3-bis(dimethylamino)-trimethinium salts with diverse aminophenols in the presence of triethylamine in EtOH at reflux is described.![]()
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Affiliation(s)
- Ziba Rafiee Samani
- Department of Chemistry, Faculty of Sciences, Persian Gulf University Bushehr 75169 Iran
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18
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Ermiş E, Aydın A, Ünver H, Sezen S, Mutlu MB. Microwave assisted synthesis, experimental and theoretical characterization and antibacterial activity screening of novel azomethine compounds containing thiophene and aminophenol functionality. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2020; 243:118761. [PMID: 32854082 DOI: 10.1016/j.saa.2020.118761] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/23/2020] [Revised: 07/03/2020] [Accepted: 07/20/2020] [Indexed: 06/11/2023]
Abstract
Eight new azomethine compounds (3a-3h) containing thiophene and aminophenol functionality were synthesized in excellent yields by using conventional heating and microwave assisted synthesis methods. The structures of newly synthesized compounds were characterized by spectroscopic techniques such as UV-Vis, FTIR, 1H and 13C NMR and elemental analysis. UV-Vis and 1H NMR results show that all compounds prefer the phenol-imine tautomer form in solvent media. The chemical structure of 3a, 3b and 3g was also confirmed by single crystal X-ray diffraction method. The molecular conformations of 3a, 3b and 3g are stabilized by an N+-H⋯O- type intramolecular hydrogen bond in zwitterionic form in the crystalline solid state. The optimized molecular structures, 1H and 13C NMR chemical shift values, UV-Vis spectroscopic parameters, HOMO-LUMO energies, Mulliken (MPA) and natural (NBO) atomic charges, Natural bond orbitals (NBO), molecular electrostatic potential (MEP) maps and solvent accessible surfaces (SASs) for 3a-3h were calculated by using DFT/B3LYP/6-311G(2d,p) approach. The theoretical spectroscopic features obtained by DFT calculations show a very good agreement with the experimental data. In addition, the synthesized compounds (3a-3h) were screened for their antibacterial activities against Bacillus cereus (NRRL-B3711), Bacillus subtilis (NRRL-B4378), Escherichia coli (NRRL B-3008), Staphylococcus aureus (ATCC-6538) and Salmonella typhimurium (ATCC-13311). The results show that investigated compounds have either moderately active, slightly active or inactive among the tested microorganisms. 3a exhibited the stronger antibacterial activity against all test bacteria than other compounds. It also has been observed that compounds with relatively low HOMO-LUMO energy gaps exhibit better antibacterial effects.
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Affiliation(s)
- Emel Ermiş
- Eskisehir Technical University, Faculty of Science, Department of Chemistry, Yunus Emre Campus, 26470 Tepebasi, Eskisehir, Turkey.
| | - Atakan Aydın
- Eskisehir Technical University, Faculty of Science, Department of Chemistry, Yunus Emre Campus, 26470 Tepebasi, Eskisehir, Turkey
| | - Hakan Ünver
- Eskisehir Technical University, Faculty of Science, Department of Chemistry, Yunus Emre Campus, 26470 Tepebasi, Eskisehir, Turkey
| | - Suat Sezen
- Eskisehir Technical University, Faculty of Science, Department of Biology, Yunus Emre Campus, 26470 Tepebasi, Eskisehir, Turkey
| | - Mehmet Burçin Mutlu
- Eskisehir Technical University, Faculty of Science, Department of Biology, Yunus Emre Campus, 26470 Tepebasi, Eskisehir, Turkey
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19
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Gonçalves LCP, Lopes NB, Augusto FA, Pioli RM, Machado CO, Freitas-Dörr BC, Suffredini HB, Bastos EL. Phenolic betalain as antioxidants: meta means more. PURE APPL CHEM 2020. [DOI: 10.1515/pac-2019-0108] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
AbstractBetalains are phytochemicals of nutraceutical importance that emerged as potent antioxidants, preventing radical chain propagation and the deleterious health effects of oxidative stress. However, despite the wide application of betalains as color additives in products for human consumption, little is known about the relationship between their structure and antioxidant potential. Here we investigate the mechanism of antioxidant action of three regioisomeric phenolic betalains and show that the meta isomer has higher antiradical capacity than most natural betalains, anthocyanins and flavonoids. Structural and pH effects on redox and antiradical properties were investigated and the results are rationalized in light of quantum chemical calculations. Our results demonstrate that hydrogen atom transfer/proton-coupled electron transfer or sequential proton loss electron transfer mechanisms are plausible to explain the radical chain breaking properties of phenolic betalains in water. Furthermore, mesomeric effects are responsible for the stabilization of the resulting radical phenolic betalains. These findings are useful for the design of biocompatible antioxidants and for the development of novel additives for functional foods and cosmetics with high antioxidant potential.
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Affiliation(s)
| | - Nathana B. Lopes
- Departamento de Química Fundamental, Instituto de Química, Universidade de São Paulo, São Paulo, SP, Brazil
| | - Felipe A. Augusto
- Departamento de Química Fundamental, Instituto de Química, Universidade de São Paulo, São Paulo, SP, Brazil
| | - Renan M. Pioli
- Departamento de Química Fundamental, Instituto de Química, Universidade de São Paulo, São Paulo, SP, Brazil
| | - Caroline O. Machado
- Departamento de Química Fundamental, Instituto de Química, Universidade de São Paulo, São Paulo, SP, Brazil
| | - Barbara C. Freitas-Dörr
- Departamento de Química Fundamental, Instituto de Química, Universidade de São Paulo, São Paulo, SP, Brazil
| | - Hugo B. Suffredini
- Centro de Ciências Naturais e Humanas, Universidade Federal do ABC, Santo André, SP, Brazil
| | - Erick L. Bastos
- Centro de Ciências Naturais e Humanas, Universidade Federal do ABC, Santo André, SP, Brazil
- Departamento de Química Fundamental, Instituto de Química, Universidade de São Paulo, São Paulo, SP, Brazil
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20
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Yu S, Wang Y, Wang S, Zhu J, Liu S. The Antioxidant Activity and Catalytic Mechanism of Schiff Base Diphenylamines at Elevated Temperatures. Ind Eng Chem Res 2020. [DOI: 10.1021/acs.iecr.9b05321] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Shasha Yu
- Polymers and composites division, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201, China
| | - Yishan Wang
- College of Chemistry, Key Laboratory of Theoretical & Computational Photochemistry of Ministry of Education, Beijing Normal University, Beijing 100875, China
| | - Shengpei Wang
- Polymers and composites division, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Jia Zhu
- College of Chemistry, Key Laboratory of Theoretical & Computational Photochemistry of Ministry of Education, Beijing Normal University, Beijing 100875, China
| | - Shenggao Liu
- Polymers and composites division, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201, China
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21
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Affiliation(s)
- Ömer Şahin
- Faculty of Engineering, Department of Chemical Engineering, Siirt University, Siirt, Turkey
| | - Dilek Kilinç
- Faculty of Arts & Sciences, Department of Chemistry, Siirt University, Siirt, Turkey
| | - Sabit Horoz
- Faculty of Engineering, Department of Electrical and Electronics Engineering, Siirt University, Siirt, Turkey
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22
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Belaya NI, Belyi AV, Zarechnaya OM, Shcherbakov IN, Doroshkevich VS. Proton Coupled Electron Transfer in the Reaction of Hydroxybenzenes with Hydrazyl Radical in Aqueous Media. RUSS J GEN CHEM+ 2020. [DOI: 10.1134/s1070363220010041] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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23
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Malik MA, Lone SA, Gull P, Dar OA, Wani MY, Ahmad A, Hashmi AA. Efficacy of Novel Schiff base Derivatives as Antifungal Compounds in Combination with Approved Drugs Against Candida Albicans. Med Chem 2019; 15:648-658. [PMID: 30501599 DOI: 10.2174/1573406415666181203115957] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2018] [Revised: 11/15/2018] [Accepted: 11/15/2018] [Indexed: 11/22/2022]
Abstract
BACKGROUND The increasing incidence of fungal infections, especially caused by Candida albicans, and their increasing drug resistance has drastically increased in recent years. Therefore, not only new drugs but also alternative treatment strategies are promptly required. METHODS We previously reported on the synergistic interaction of some azole and non-azole compounds with fluconazole for combination antifungal therapy. In this study, we synthesized some non-azole Schiff-base derivatives and evaluated their antifungal activity profile alone and in combination with the most commonly used antifungal drugs- fluconazole (FLC) and amphotericin B (AmB) against four drug susceptible, three FLC resistant and three AmB resistant clinically isolated Candida albicans strains. To further analyze the mechanism of antifungal action of these compounds, we quantified total sterol contents in FLC-susceptible and resistant C. albicans isolates. RESULTS A pyrimidine ring-containing derivative SB5 showed the most potent antifungal activity against all the tested strains. After combining these compounds with FLC and AmB, 76% combinations were either synergistic or additive while as the rest of the combinations were indifferent. Interestingly, none of the combinations was antagonistic, either with FLC or AmB. Results interpreted from fractional inhibitory concentration index (FICI) and isobolograms revealed 4-10-fold reduction in MIC values for synergistic combinations. These compounds also inhibit ergosterol biosynthesis in a concentration-dependent manner, supported by the results from docking studies. CONCLUSION The results of the studies conducted advocate the potential of these compounds as new antifungal drugs. However, further studies are required to understand the other mechanisms and in vivo efficacy and toxicity of these compounds.
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Affiliation(s)
- Manzoor Ahmad Malik
- Department of Chemistry, Jamia Millia Islamia (Central University), New Delhi-110025, India
| | - Shabir Ahmad Lone
- Clinical Microbiology and Infectious Diseases, School of Pathology, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, 2193, South Africa
| | - Parveez Gull
- Department of Chemistry, Jamia Millia Islamia (Central University), New Delhi-110025, India
| | - Ovas Ahmad Dar
- Department of Chemistry, Jamia Millia Islamia (Central University), New Delhi-110025, India
| | - Mohmmad Younus Wani
- Chemistry Department, Faculty of Science, University of Jeddah, P.O. Box 80327, Jeddah 21589, Saudi Arabia
| | - Aijaz Ahmad
- Clinical Microbiology and Infectious Diseases, School of Pathology, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, 2193, South Africa.,Infection Control, Charlotte Maxeke Johannesburg Academic Hospital, National Health Laboratory Service, Johannesburg, 2193, South Africa
| | - Athar Adil Hashmi
- Department of Chemistry, Jamia Millia Islamia (Central University), New Delhi-110025, India
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24
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Nakashima KK, Bastos EL. Rationale on the High Radical Scavenging Capacity of Betalains. Antioxidants (Basel) 2019; 8:E222. [PMID: 31337048 PMCID: PMC6680464 DOI: 10.3390/antiox8070222] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2019] [Revised: 07/01/2019] [Accepted: 07/11/2019] [Indexed: 01/31/2023] Open
Abstract
Betalains are water-soluble natural pigments of increasing importance as antioxidants for pharmaceutical use. Although non-phenolic betalains have lower capacity to scavenge radicals compared to their phenolic analogues, both classes perform well as antioxidants and anti-inflammatory agents in vivo. Here we show that meta-hydroxyphenyl betalain (m-OH-pBeet) and phenylbetalain (pBeet) show higher radical scavenging capacity compared to their N-methyl iminium analogues, in which proton-coupled electron transfer (PCET) from the imine nitrogen atom is precluded. The 1,7-diazaheptamethinium system was found to be essential for the high radical scavenging capacity of betalains and concerted PCET is the most thermodynamically favorable pathway for their one-electron oxidation. The results provide useful insights for the design of nature-derived redox mediators based on the betalain scaffold.
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Affiliation(s)
- Karina K Nakashima
- Departamento de Química Fundamental, Instituto de Química, Universidade de São Paulo, São Paulo, SP 05508-000, Brazil
| | - Erick L Bastos
- Departamento de Química Fundamental, Instituto de Química, Universidade de São Paulo, São Paulo, SP 05508-000, Brazil.
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25
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Đorović J, Milenković D, Joksović L, Joksović M, Marković Z. Study of Influence of Free Radical Species on Antioxidant Activity of Selected 1,2,4‐Triazole‐3‐thiones. ChemistrySelect 2019. [DOI: 10.1002/slct.201900895] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Affiliation(s)
- Jelena Đorović
- Bioengineering Research and Development CenterPrvoslava Stojanovića 6 Kragujevac Republic of Serbia
| | - Dejan Milenković
- Bioengineering Research and Development CenterPrvoslava Stojanovića 6 Kragujevac Republic of Serbia
| | - Ljubinka Joksović
- University of KragujevacFaculty of ScienceDepartment of Chemistry Radoja Domanovića 12 34000 Kragujevac Republic of Serbia
| | - Milan Joksović
- University of KragujevacFaculty of ScienceDepartment of Chemistry Radoja Domanovića 12 34000 Kragujevac Republic of Serbia
| | - Zoran Marković
- Bioengineering Research and Development CenterPrvoslava Stojanovića 6 Kragujevac Republic of Serbia
- Department of Chemical-Technological SciencesState University of Novi Pazar, Vuka Karadžića bb 36300 Novi Pazar Republic of Serbia
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26
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Shahab S, Sheikhi M, Filippovich L, Dikusar E, Pazniak A, Rouhani M, Kumar R. Molecular Investigations of the Newly Synthesized Azomethines as Antioxidants: Theoretical and Experimental Studies. Curr Mol Med 2019; 19:419-433. [PMID: 31072290 DOI: 10.2174/1566524019666190509102620] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2018] [Revised: 03/26/2019] [Accepted: 03/27/2019] [Indexed: 11/22/2022]
Abstract
BACKGROUND In this study, the antioxidant property of new synthesized azomethins has been investigated as theoretical and experimental. METHODS AND RESULTS Density functional theory (DFT) was employed to investigate the Bond Dissociation Enthalpy (BDE), Mulliken Charges, NBO analysis, Ionization Potential (IP), Electron Affinities (EA), HOMO and LUMO energies, Hardness (η), Softness (S), Electronegativity (µ), Electrophilic Index (ω), Electron Donating Power (ω-), Electron Accepting Power (ω+) and Energy Gap (Eg) in order to deduce scavenging action of the two new synthesized azomethines (FD-1 and FD-2). Spin density calculations and NBO analysis were also carried out to understand the antioxidant activity mechanism. Comparison of BDE of FD-1 and FD-2 indicate the weal antioxidant potential of these structures. CONCLUSION FD-1 and FD-2 have very high antioxidant potential due to the planarity and formation of intramolecular hydrogen bonds.
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Affiliation(s)
- Siyamak Shahab
- Institute of Physical Organic Chemistry, National Academy of Sciences of Belarus,13 Surganov Str., Minsk 220072, Belarus.,Institute of Chemistry of New Materials, National Academy of Sciences of Belarus, 36 Skarina Str., Minsk 220141, Belarus.,Belarusian State University, ISEI BSU, Minsk, Belarus
| | - Masoome Sheikhi
- Young Researchers and Elite Club, Gorgan Branch, Islamic Azad University, Gorgan, Iran
| | - Liudmila Filippovich
- Institute of Physical Organic Chemistry, National Academy of Sciences of Belarus,13 Surganov Str., Minsk 220072, Belarus.,Institute of Chemistry of New Materials, National Academy of Sciences of Belarus, 36 Skarina Str., Minsk 220141, Belarus
| | - Evgenij Dikusar
- Institute of Physical Organic Chemistry, National Academy of Sciences of Belarus,13 Surganov Str., Minsk 220072, Belarus
| | | | - Morteza Rouhani
- Department of Chemistry, Science and Research Branch, Islamic Azad University, Tehran, Iran
| | - Rakesh Kumar
- Department of Chemistry, DAV University, Jalandhar-144012 (Punjab), India
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27
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Augustine C. Unravelling the Competence of Leucocyanidin in Free Radical Scavenging: A Theoretical Approach Based on Electronic Structure Calculations. J STRUCT CHEM+ 2019. [DOI: 10.1134/s0022476619020045] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
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28
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Belaya NI, Belyi AV, Zarechnaya OM, Shcherbakov IN, Pomeshchenko AI, Gorban’ OA. Spectrokinetic Studies of the Products of Conversion of Natural Phenols in Radical Reactions. KINETICS AND CATALYSIS 2019. [DOI: 10.1134/s0023158419010014] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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29
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Bensegueni R, Guergouri M, Bensouici C, Bencharif M. Synthesis, experimental and theoretical antiradical activity assessment of some azomethines and phenylhydrazones. SN APPLIED SCIENCES 2018. [DOI: 10.1007/s42452-018-0085-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
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30
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QSAR of the free radical scavenging potency of selected hydroxyanthraquinones. CHEMICAL PAPERS 2018. [DOI: 10.1007/s11696-018-0534-3] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
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31
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Padmavathy K, Krishnan KG, Kumar CU, Sutha P, Sivaramakarthikeyan R, Ramalingan C. Synthesis, Antioxidant Evaluation, Density Functional Theory Study of Dihydropyrimidine Festooned Phenothiazines. ChemistrySelect 2018. [DOI: 10.1002/slct.201800748] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Affiliation(s)
- Krishnaraj Padmavathy
- Department of ChemistrySchool of Advanced Sciences (SAS)Kalasalingam Academy of Research and Education (Deemed to be University) Krishnankoil – 626 126 Tamilnadu India
| | - Kannan Gokula Krishnan
- Department of ChemistrySchool of Advanced Sciences (SAS)Kalasalingam Academy of Research and Education (Deemed to be University) Krishnankoil – 626 126 Tamilnadu India
| | - Chandran Udhaya Kumar
- Department of ChemistrySchool of Advanced Sciences (SAS)Kalasalingam Academy of Research and Education (Deemed to be University) Krishnankoil – 626 126 Tamilnadu India
| | - Peramasivan Sutha
- Department of ChemistrySchool of Advanced Sciences (SAS)Kalasalingam Academy of Research and Education (Deemed to be University) Krishnankoil – 626 126 Tamilnadu India
| | - Ramar Sivaramakarthikeyan
- Department of ChemistrySchool of Advanced Sciences (SAS)Kalasalingam Academy of Research and Education (Deemed to be University) Krishnankoil – 626 126 Tamilnadu India
| | - Chennan Ramalingan
- Department of ChemistrySchool of Advanced Sciences (SAS)Kalasalingam Academy of Research and Education (Deemed to be University) Krishnankoil – 626 126 Tamilnadu India
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Dimić D, Milenković D, Dimitrić Marković J, Marković Z. Antiradical activity of catecholamines and metabolites of dopamine: theoretical and experimental study. Phys Chem Chem Phys 2018; 19:12970-12980. [PMID: 28480927 DOI: 10.1039/c7cp01716b] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The importance of molecules with antiradical potency that are produced in the human body has significantly increased. Among others, neurotransmitters and their metabolites act as the first line of defense against oxidative stress in the peripheral endocrine and the central nervous systems. Dopamine (DO), epinephrine (EP), norepinephrine (NE), l-DOPA, catechol, and three metabolites of dopamine (3-methoxytyramine (3-MT), homovanillic acid (HO), and 3,4-dihydrophenylacetic acid (DOPAC)) were investigated for their antiradical potency via computational methods and DPPH assay. Density functional theory calculations were used to determine the most probable reaction mechanism based on the thermodynamic parameters. These results suggested that hydrogen atom transfer (HAT)/proton-coupled electron transfer (PCET) and sequential proton loss electron transfer (SPLET) mechanisms are preferable in polar solvents. Several techniques were employed to differentiate between HAT and PCET mechanisms via examination of the transition state structures. Kinetic studies of HAT/PCET and electron transfer (ET) reactions, the second step of SPLET, have proven that ET is much faster for an order of 105-106. Based on this, it was concluded that SPLET was the dominant mechanism for the antiradical activity towards DPPH radicals in polar solvents. The findings suggest that all the investigated molecules can be classified as excellent antiradical scavengers, except for 3-MT and homovanillic acid.
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Affiliation(s)
- D Dimić
- Faculty of Physical Chemistry, University of Belgrade, 12-16 Studentski trg, 11000 Belgrade, Republic of Serbia
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33
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In vitro study of iron coordination properties, anti-inflammatory potential, and cytotoxic effects of N-salicylidene and N-vanillidene anil Schiff bases. CHEMICAL PAPERS 2018. [DOI: 10.1007/s11696-018-0419-5] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
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34
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Yu S, Liu S. Multifunctional Antioxidants with High Activity at Elevated Temperatures Based on Intramolecular Synergism. European J Org Chem 2018. [DOI: 10.1002/ejoc.201701577] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Affiliation(s)
- Shasha Yu
- Polymers and Composites Division; Ningbo Institute of Materials Technology and Engineering; Chinese Academy of Sciences; No. 1219 Zhongguan West Road 315201 Ningbo China
| | - Shenggao Liu
- Polymers and Composites Division; Ningbo Institute of Materials Technology and Engineering; Chinese Academy of Sciences; No. 1219 Zhongguan West Road 315201 Ningbo China
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35
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Dimić DS, Milenković DA, Marković JMD, Marković ZS. Thermodynamic and kinetic analysis of the reaction between biological catecholamines and chlorinated methylperoxy radicals. Mol Phys 2017. [DOI: 10.1080/00268976.2017.1414967] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
- Dušan S. Dimić
- Faculty of Physical Chemistry, University of Belgrade, Belgrade, Republic of Serbia
| | - Dejan A. Milenković
- Bioengineering Research and Development Center, Kragujevac, Republic of Serbia
| | | | - Zoran S. Marković
- Department of Chemical-Technological Sciences, State University of Novi Pazar, Novi Pazar, Republic of Serbia
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36
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Petrović ZD, Simijonović D, Đorović J, Milovanović V, Marković Z, Petrović VP. One-Pot Synthesis of Tetrahydropyridine Derivatives: Liquid Salt Catalyst vs Glycolic Acid Promoter. Structure and Antiradical Activity of the New Products. ChemistrySelect 2017. [DOI: 10.1002/slct.201701873] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Zorica D. Petrović
- University of Kragujevac, Faculty of Science; Department of Chemistry; Radoja Domanovića 12 34000 Kragujevac, Republic of Serbia
| | - Dušica Simijonović
- University of Kragujevac, Faculty of Science; Department of Chemistry; Radoja Domanovića 12 34000 Kragujevac, Republic of Serbia
| | - Jelena Đorović
- University of Kragujevac, Faculty of Science; Department of Chemistry; Radoja Domanovića 12 34000 Kragujevac, Republic of Serbia
- Bioengineering Research; Development Center; Prvoslava Stojanovića 6 Kragujevac, Republic of Serbia
| | - Vesna Milovanović
- University of Kragujevac, Faculty of Science; Department of Chemistry; Radoja Domanovića 12 34000 Kragujevac, Republic of Serbia
| | - Zoran Marković
- Bioengineering Research; Development Center; Prvoslava Stojanovića 6 Kragujevac, Republic of Serbia
- Department of Chemical-Technological Sciences; State University of Novi Pazar; Vuka Karadžića bb 36300 Novi Pazar, Republic of Serbia
| | - Vladimir P. Petrović
- University of Kragujevac, Faculty of Science; Department of Chemistry; Radoja Domanovića 12 34000 Kragujevac, Republic of Serbia
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37
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Liu J, Xu J, Li Z, Huang Y, Wang H, Gao Y, Guo T, Ouyang P, Guo K. Carbocation Organocatalysis in Interrupted Povarov Reactions to cis
-Fused Pyrano- and Furanobenzodihydropyrans. European J Org Chem 2017. [DOI: 10.1002/ejoc.201700634] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Jingjing Liu
- State Key Laboratory of Materials-Oriented Chemical Engineering; College of Biotechnology and Pharmaceutical Engineering; Nanjing Tech University; 30 Puzhu Road South 211816 Nanjing China
| | - Jiaxi Xu
- State Key Laboratory of Materials-Oriented Chemical Engineering; College of Biotechnology and Pharmaceutical Engineering; Nanjing Tech University; 30 Puzhu Road South 211816 Nanjing China
| | - Zhenjiang Li
- State Key Laboratory of Materials-Oriented Chemical Engineering; College of Biotechnology and Pharmaceutical Engineering; Nanjing Tech University; 30 Puzhu Road South 211816 Nanjing China
| | - Yu Huang
- State Key Laboratory of Materials-Oriented Chemical Engineering; College of Biotechnology and Pharmaceutical Engineering; Nanjing Tech University; 30 Puzhu Road South 211816 Nanjing China
| | - Haixin Wang
- State Key Laboratory of Materials-Oriented Chemical Engineering; College of Biotechnology and Pharmaceutical Engineering; Nanjing Tech University; 30 Puzhu Road South 211816 Nanjing China
| | - Yu Gao
- State Key Laboratory of Materials-Oriented Chemical Engineering; College of Biotechnology and Pharmaceutical Engineering; Nanjing Tech University; 30 Puzhu Road South 211816 Nanjing China
| | - Tianfo Guo
- State Key Laboratory of Materials-Oriented Chemical Engineering; College of Biotechnology and Pharmaceutical Engineering; Nanjing Tech University; 30 Puzhu Road South 211816 Nanjing China
| | - Pingkai Ouyang
- State Key Laboratory of Materials-Oriented Chemical Engineering; College of Biotechnology and Pharmaceutical Engineering; Nanjing Tech University; 30 Puzhu Road South 211816 Nanjing China
| | - Kai Guo
- State Key Laboratory of Materials-Oriented Chemical Engineering; College of Biotechnology and Pharmaceutical Engineering; Nanjing Tech University; 30 Puzhu Road South 211816 Nanjing China
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38
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Study of the structure, prooxidative, and cytotoxic activity of some chelate copper(II) complexes. CHEMICAL PAPERS 2017. [DOI: 10.1007/s11696-017-0200-1] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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39
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Đorović J, Marković Z, Petrović ZD, Simijonović D, Petrović VP. Theoretical analysis of the experimental UV-Vis absorption spectra of some phenolic Schiff bases. Mol Phys 2017. [DOI: 10.1080/00268976.2017.1324183] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
- Jelena Đorović
- Bioengineering Research and Development Center, Kragujevac, Republic of Serbia
| | - Zoran Marković
- Bioengineering Research and Development Center, Kragujevac, Republic of Serbia
- Department of Chemical-Technological Sciences, State University of Novi Pazar, Novi Pazar, Republic of Serbia
| | - Zorica D. Petrović
- Department of Chemistry, Faculty of Science, University of Kragujevac, Kragujevac, Serbia
| | - Dušica Simijonović
- Department of Chemistry, Faculty of Science, University of Kragujevac, Kragujevac, Serbia
| | - Vladimir P. Petrović
- Department of Chemistry, Faculty of Science, University of Kragujevac, Kragujevac, Serbia
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40
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Chacko S, Samanta S. A novel approach towards design, synthesis and evaluation of some Schiff base analogues of 2-aminopyridine and 2-aminobezothiazole against hepatocellular carcinoma. Biomed Pharmacother 2017; 89:162-176. [DOI: 10.1016/j.biopha.2017.01.108] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2016] [Revised: 01/08/2017] [Accepted: 01/17/2017] [Indexed: 02/07/2023] Open
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41
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Yu S, Feng J, Cai T, Liu S. Schiff Base Bridged Phenolic Diphenylamines for Highly Efficient and Superior Thermostable Lubricant Antioxidants. Ind Eng Chem Res 2017. [DOI: 10.1021/acs.iecr.7b00313] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Shasha Yu
- Polymers and Composites
Division,
Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, No. 1219 Zhongguan West Road, Ningbo 315201, China
| | - Jianxiang Feng
- Polymers and Composites
Division,
Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, No. 1219 Zhongguan West Road, Ningbo 315201, China
| | - Tao Cai
- Polymers and Composites
Division,
Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, No. 1219 Zhongguan West Road, Ningbo 315201, China
| | - Shenggao Liu
- Polymers and Composites
Division,
Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, No. 1219 Zhongguan West Road, Ningbo 315201, China
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42
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Prasanth VG, Rathore RS, Pathak M, Sathiyanarayanan KI. Fluorescent aluminum chelate complexes as modified precursors for nano-structured alumina. J COORD CHEM 2017. [DOI: 10.1080/00958972.2017.1279280] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
| | - Ravindranath S. Rathore
- Centre for Biological Sciences, School of Earth, Biological and Environmental Sciences, Central University of South Bihar, Patna, India
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43
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Ivanović N, Jovanović L, Marković Z, Marković V, Joksović MD, Milenković D, Djurdjević PT, Ćirić A, Joksović L. Potent 1,2,4-Triazole-3-thione Radical Scavengers Derived from Phenolic Acids: Synthesis, Electrochemistry, and Theoretical Study. ChemistrySelect 2016. [DOI: 10.1002/slct.201600738] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Nevena Ivanović
- Faculty of Science, Department of Chemistry; University of Kragujevac; R. Domanovića 12 34000 Kragujevac Serbia
| | - Ljiljana Jovanović
- Faculty of Sciences; University of Novi Sad; Trg D. Obradovića 3 21000 Novi Sad Serbia
| | - Zoran Marković
- Department of Chemical-Technological Sciences; State University of Novi Pazar; Vuka Karadžića bb 36300 Novi Pazar Serbia
| | - Violeta Marković
- Faculty of Science, Department of Chemistry; University of Kragujevac; R. Domanovića 12 34000 Kragujevac Serbia
| | - Milan D. Joksović
- Faculty of Science, Department of Chemistry; University of Kragujevac; R. Domanovića 12 34000 Kragujevac Serbia
| | - Dejan Milenković
- Bioengineering Research and Development Center; 34000 Kragujevac Serbia
| | - Predrag T. Djurdjević
- Faculty of Science, Department of Chemistry; University of Kragujevac; R. Domanovića 12 34000 Kragujevac Serbia
| | - Andrija Ćirić
- Faculty of Science, Department of Chemistry; University of Kragujevac; R. Domanovića 12 34000 Kragujevac Serbia
| | - Ljubinka Joksović
- Faculty of Science, Department of Chemistry; University of Kragujevac; R. Domanovića 12 34000 Kragujevac Serbia
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44
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Vuppalapati GP, Rathore RS, Pathak M, Kulathu Iyer S. Hepta-coordinated heteroleptic derivatives of zirconium(IV): Synthesis, structural characterization and ring opening polymerization of ε-caprolactone. Polyhedron 2016. [DOI: 10.1016/j.poly.2016.01.035] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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45
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Investigation of the antioxidant and radical scavenging activities of some phenolic Schiff bases with different free radicals. J Mol Model 2015; 21:293. [PMID: 26508294 DOI: 10.1007/s00894-015-2840-9] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2015] [Accepted: 10/09/2015] [Indexed: 10/22/2022]
Abstract
The antioxidant properties of some phenolic Schiff bases in the presence of different reactive particles such as (•)OH, (•)OOH, (CH2=CH-O-O(•)), and (-•)O2 were investigated. The thermodynamic values, ΔH BDE, ΔH IP, and ΔH PA, were used for this purpose. Three possible mechanisms for transfer of hydrogen atom, concerted proton-electron transfer (CPET), single electron transfer followed by proton transfer (SET-PT), and sequential proton loss electron transfer (SPLET) were considered. These mechanisms were tested in solvents of different polarity. On the basis of the obtained results it was shown that SET-PT antioxidant mechanism can be the dominant mechanism when Schiff bases react with radical cation, while SPLET and CPET are competitive mechanisms for radical scavenging of hydroxy radical in all solvents under investigation. Examined Schiff bases react with the peroxy radicals via SPLET mechanism in polar and nonpolar solvents. The superoxide radical anion reacts with these Schiff bases very slowly.
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46
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Petrović VP, Živanović MN, Simijonović D, Đorović J, Petrović ZD, Marković SD. Chelate N,O-palladium(ii) complexes: synthesis, characterization and biological activity. RSC Adv 2015. [DOI: 10.1039/c5ra10204a] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The structural characterization, cytotoxic and prooxidative activities of four chelate Pd(ii) complexes were examined. Complexes Pd-1 and Pd-6 showed the most significant cytotoxic and prooxidative effects on HCT-116 and MDA-MB-231 cancer cell lines.
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Affiliation(s)
- Vladimir P. Petrović
- Faculty of Science
- University of Kragujevac
- Department of Chemistry
- 34000 Kragujevac
- Serbia
| | - Marko N. Živanović
- Faculty of Science
- University of Kragujevac
- Department of Biology and Ecology
- 34000 Kragujevac
- Serbia
| | - Dušica Simijonović
- Faculty of Science
- University of Kragujevac
- Department of Chemistry
- 34000 Kragujevac
- Serbia
| | - Jelena Đorović
- Faculty of Science
- University of Kragujevac
- Department of Chemistry
- 34000 Kragujevac
- Serbia
| | - Zorica D. Petrović
- Faculty of Science
- University of Kragujevac
- Department of Chemistry
- 34000 Kragujevac
- Serbia
| | - Snežana D. Marković
- Faculty of Science
- University of Kragujevac
- Department of Biology and Ecology
- 34000 Kragujevac
- Serbia
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