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Thermodynamic Study on the Dissociation and Complexation of Coumarinic Acid with Neodymium(III) and Dioxouranium(VI) in Aqueous Media. APPLIED SCIENCES-BASEL 2021. [DOI: 10.3390/app11104475] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
In the frame of a systematic study on the sequestering ability of natural antioxidants towards metal cations, the complexation of coumarin-3-carboxilic acid (HCCA) with neodymium(III) and dioxouranium(VI) (uranyl, UO22+), and overall stability constants of the resulting complexes, were evaluated from the pH-potentiometric titration data at 37 °C and in an aqueous solution (i.e., 0.16 mol/L NaClO4). The graphic representation of the complex’s concentration curves is given by the distribution diagrams, which provide a depiction of all the species present in the solution in the selected pH ranges. The protonation constant of HCCA was also determined to evaluate the competition of the ligand for the metal cations and H+. The ligand-to-metal concentration ratio was varied between 1 and 10, and the hydrogen ion concentration was decreased stepwise until the incipient precipitation of a basic salt of the metal, which occurred at different values depending on the specific metal cation and the ligand to metal ratio. Speciation profiles obtained by potentiometric titrations and supported by UV-Vis data show that a complexation occurs at a ligand-to-Nd(III) and to –UO22+ ratio of 1:1 and 2:1, with different degrees of deprotonation: Nd(OH)(CCA)+, UO2(OH)(CCA), UO2(OH)2(CCA)−, and Nd(OH)(CCA)2, UO2(CCA)2 and (UO2)2(OH)2(CCA)2.
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2
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de Paiva REF, Marçal Neto A, Santos IA, Jardim ACG, Corbi PP, Bergamini FRG. What is holding back the development of antiviral metallodrugs? A literature overview and implications for SARS-CoV-2 therapeutics and future viral outbreaks. Dalton Trans 2020; 49:16004-16033. [PMID: 33030464 DOI: 10.1039/d0dt02478c] [Citation(s) in RCA: 48] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
In light of the Covid-19 outbreak, this review brings together historical and current literature efforts towards the development of antiviral metallodrugs. Classical compounds such as CTC-96 and auranofin are discussed in depth, as pillars for future metallodrug development. From the recent literature, both cell-based results and biophysical assays against potential viral biomolecule targets are summarized here. The comprehension of the biomolecular targets and their interactions with coordination compounds are emphasized as fundamental strategies that will foment further development of metal-based antivirals. We also discuss other possible and unexplored methods for unveiling metallodrug interactions with biomolecules related to viral replication and highlight the specific challenges involved in the development of antiviral metallodrugs.
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Affiliation(s)
- Raphael E F de Paiva
- Department of Fundamental Chemistry, Institute of Chemistry, University of Sao Paulo, Sao Paulo, SP - 05508-000, Brazil.
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3
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Therapeutic potential of coumarin bearing metal complexes: Where are we headed? Bioorg Med Chem Lett 2019; 30:126805. [PMID: 31753700 DOI: 10.1016/j.bmcl.2019.126805] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2019] [Revised: 10/29/2019] [Accepted: 10/31/2019] [Indexed: 11/21/2022]
Abstract
The successfully application of some metallodrugs such as salvarsan, silver sulfadiazine and cisplatin in modern medicine launched the biological investigation of organometallic and metal-organic complexes. The availability and tunability of various ligands including N-heterocycles, phosphines, N-heterocyclic carbenes present an extended research area to chemists. In recent years, the preparation of the metal complexes of bioactive organic compounds is a new strategy. Coumarin derivatives are one of the classes of compounds used for this purpose, and many complexes of coumarin derivatives were prepared for enhanced biological activity, especially anticancer and antimicrobial. In this paper, we discuss the current situation of this topic.
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Sheikh AH, Khalid A, Khan F, Begum A. Fluorescent Gadolinium(III)-Oligopeptide Complexes and Carbon Nanotube Composite as Dual Modality Anticancer Agents. ChemistrySelect 2019. [DOI: 10.1002/slct.201802810] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Affiliation(s)
- Aasif Hassan Sheikh
- Department of Chemistry; Jamia Hamdard University, New; Delhi - 110062 India
| | - Anam Khalid
- Department of Chemistry; Jamia Hamdard University, New; Delhi - 110062 India
| | - Farah Khan
- Department of Biochemistry; Jamia Hamdard University; New Delhi - 110062 India
| | - Ameerunisha Begum
- Department of Chemistry; Jamia Hamdard University, New; Delhi - 110062 India
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Kumari R, Nath M. Synthesis and characterization of novel trimethyltin(IV) and tributylltin(IV) complexes of anticoagulant, WARFARIN: Potential DNA binding and plasmid cleaving agents. INORG CHEM COMMUN 2018. [DOI: 10.1016/j.inoche.2018.07.001] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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6
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Stojković DL, Jevtić VV, Vuković N, Vukić M, Čanović P, Zarić MM, Mišić MM, Radovanović DM, Baskić D, Trifunović SR. Synthesis, characterization, antimicrobial and antitumor reactivity of new palladium(II) complexes with methionine and tryptophane coumarine derivatives. J Mol Struct 2018. [DOI: 10.1016/j.molstruc.2017.12.095] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Hassan SS. Antibacterial, DFT and molecular docking studies of Rh(III) complexes of Coumarinyl‐Thiosemicarbazone nuclei based ligands. Appl Organomet Chem 2017. [DOI: 10.1002/aoc.4170] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Safaa S. Hassan
- Department of Chemistry, Faculty of ScienceCairo University Giza Egypt
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Avdović EH, Stojković DL, Jevtić VV, Kosić M, Ristić B, Harhaji-Trajković L, Vukić M, Vuković N, Marković ZS, Potočňák I, Trifunović SR. Synthesis, characterization and cytotoxicity of a new palladium(II) complex with a coumarin-derived ligand 3-(1-(3-hydroxypropylamino)ethylidene)chroman-2,4-dione. Crystal structure of the 3-(1-(3-hydroxypropylamino)ethylidene)-chroman-2,4-dione. Inorganica Chim Acta 2017. [DOI: 10.1016/j.ica.2017.06.015] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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9
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Stojković DL, Jevtić VV, Vuković N, Vukić M, Potočňák I, Zelen IR, Zarić MM, Mišić MM, Baskić D, Kaluđerović GN, Trifunović SR. Crystal and molecular structure of a new palladium(II) complex with a coumarin-valine derivate. J STRUCT CHEM+ 2017. [DOI: 10.1134/s0022476617030179] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Skoczynska A, Małecka M, Cieslak M, Kazmierczak-Baranska J, Krolewska-Golinska K, Leniart A, Budzisz E. Synthesis, structural analysis, redox properties and in vitro antitumor evaluation of half-sandwich complexes of Ru(II) with aminocoumarins. Polyhedron 2017. [DOI: 10.1016/j.poly.2017.02.011] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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11
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Spectroscopic and cytotoxic characteristics of (p-cymene)Ru(II) complexes with bidentate coumarins and density functional theory comparison with selected Pd(II) complexes. Inorganica Chim Acta 2017. [DOI: 10.1016/j.ica.2016.10.036] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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12
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Abstract
Lanthanide complexes are of increasing importance in cancer diagnosis and therapy, owing to the versatile chemical and magnetic properties of the lanthanide-ion 4f electronic configuration. Following the first implementation of gadolinium(III)-based contrast agents in magnetic resonance imaging in the 1980s, lanthanide-based small molecules and nanomaterials have been investigated as cytotoxic agents and inhibitors, in photodynamic therapy, radiation therapy, drug/gene delivery, biosensing, and bioimaging. As the potential utility of lanthanides in these areas continues to increase, this timely review of current applications will be useful to medicinal chemists and other investigators interested in the latest developments and trends in this emerging field.
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Affiliation(s)
- Ruijie D. Teo
- Division of Chemistry and Chemical Engineering, California Institute of Technology, Pasadena, California 91125, USA
| | - John Termini
- Department of Molecular Medicine, Beckman Research Institute of the City of Hope, 1500 E. Duarte Road, Duarte, California 91010, USA
| | - Harry B. Gray
- Division of Chemistry and Chemical Engineering, California Institute of Technology, Pasadena, California 91125, USA
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Georgieva I, Mihaylov T, Trendafilova N. Lanthanide and transition metal complexes of bioactive coumarins: molecular modeling and spectroscopic studies. J Inorg Biochem 2014; 135:100-12. [PMID: 24680836 DOI: 10.1016/j.jinorgbio.2014.03.003] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2013] [Revised: 03/07/2014] [Accepted: 03/10/2014] [Indexed: 11/15/2022]
Abstract
The present paper summarizes theoretical and spectroscopic investigations on a series of active coumarins and their lanthanide and transition metal complexes with application in medicine and pharmacy. Molecular modeling as well as IR, Raman, NMR and electronic spectral simulations at different levels of theory were performed to obtain important molecular descriptors: total energy, formation energy, binding energy, stability, conformations, structural parameters, electron density distribution, molecular electrostatic potential, Fukui functions, atomic charges, and reactive indexes. The computations are performed both in gas phase and in solution with consideration of the solvent effect on the molecular structural and energetic parameters. The investigations have shown that the advanced computational methods are reliable for prediction of the metal-coumarin binding mode, electron density distribution, thermodynamic properties as well as the strength and nature of the metal-coumarin interaction (not experimentally accessible) and correctly interpret the experimental spectroscopic data. Known results from biological tests for cytotoxic, antimicrobial, anti-fungal, spasmolytic and anti-HIV activities on the studied metal complexes are reported and discussed.
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Affiliation(s)
- I Georgieva
- Institute of General and Inorganic Chemistry, Bulgarian Academy of Sciences, 11 Acad. G. Bonchev Str., Sofia, Bulgaria.
| | - Tz Mihaylov
- Institute of General and Inorganic Chemistry, Bulgarian Academy of Sciences, 11 Acad. G. Bonchev Str., Sofia, Bulgaria
| | - N Trendafilova
- Institute of General and Inorganic Chemistry, Bulgarian Academy of Sciences, 11 Acad. G. Bonchev Str., Sofia, Bulgaria
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Synthesis, characterization and cytotoxicity of a new palladium(II) complex with a coumarine-derived ligand. Eur J Med Chem 2014; 74:502-8. [PMID: 24502898 DOI: 10.1016/j.ejmech.2013.12.051] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2013] [Revised: 12/26/2013] [Accepted: 12/29/2013] [Indexed: 11/21/2022]
Abstract
The new coumarine derivative, 3-(1-(2-hydroxyethylamino)ethylidene)chroman-2,4--dione, and corresponding palladium(II) complex have been synthesized and characterized by microanalysis, infrared, (1)H and (13)C NMR spectroscopy. The proposed structure of the complex was confirmed on the basis of the X-ray structural study. The palladium(II) complex decreased viability of L929 mouse fibrosarcoma, U251 human glioma and B16 mouse melanoma cell lines in a dose dependent manner, while its ligand exhibited no significant cytotoxicity. The cytotoxic effect of the complex was comparable to that of cisplatin, and mediated by apoptosis associated with oxidative stress, mitochondrial depolarization and caspase activation. Therefore, our results indicate that newly synthesized palladium(II) complex might be a potential candidate for anticancer therapy.
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Esma B, Omar A, Amine DM. Comparative study on lanthanum(III) sorption onto Lewatit TP 207 and Lewatit TP 260. J Radioanal Nucl Chem 2013. [DOI: 10.1007/s10967-013-2766-6] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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16
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High antitumor activity of 5,7-dihalo-8-quinolinolato cerium complexes. Eur J Med Chem 2013; 68:454-62. [DOI: 10.1016/j.ejmech.2013.08.007] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2013] [Revised: 05/28/2013] [Accepted: 08/02/2013] [Indexed: 11/21/2022]
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17
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Mishra A, Srivastava SK, Swati D. Study of structure-activity relationship of enantiomeric, protonated and deprotonated forms of warfarin via vibrational spectroscopy and DFT calculations. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2013; 113:439-446. [PMID: 23747386 DOI: 10.1016/j.saa.2013.04.086] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/01/2013] [Revised: 04/14/2013] [Accepted: 04/24/2013] [Indexed: 06/02/2023]
Abstract
The structure-activity relationship of the anticoagulant drug warfarin were studied by studying two enantiomeric forms (S-form and R-form) of warfarin and its protonated as well as deprotonated structures in aqueous media using density functional theory (DFT). Theoretically computed Raman and IR spectra of all the computed structures were compared and their specific vibrational spectroscopic signatures were discussed. The percentage contributions of individual normal modes of warfarin, which provides direct evidence of the different molecular activity due to change in relative atomic position of atoms in molecule, were investigated through potential energy distribution (PED). The optimized energy and molecular electrostatic potential (MEP) maps show that the S-form of the drug molecules warfarin is energetically more stable than R-form and provides higher docking opportunity for the molecular binding with the receptors in the bio-systems.
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Affiliation(s)
- Alok Mishra
- Department of Physics, Banaras Hindu University, Varanasi 221005, India
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Jevtić VV, Pešić M, Radić GP, Vuković N, Sukdolak S, Klisurić O, Podolski-Renić A, Tanić N, Trifunović SR. Synthesis, characterization and cytotoxicity of a new palladium(II) complex with a coumarin-derived ligand. Crystal structure of 4-hydroxy-3-(1-(p-tolylimino)ethyl)-2H-chromen-2-one-palladium(II) complex. J Mol Struct 2013. [DOI: 10.1016/j.molstruc.2013.03.013] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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19
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Patel KS, Patel JC, Dholariya HR, Patel KD. Multiple heating rate kinetic parameters, thermal, X-ray diffraction studies of newly synthesized octahedral copper complexes based on bromo-coumarins along with their antioxidant, anti-tubercular and antimicrobial activity evaluation. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2012; 96:468-479. [PMID: 22728283 DOI: 10.1016/j.saa.2012.05.057] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/31/2012] [Revised: 05/17/2012] [Accepted: 05/26/2012] [Indexed: 06/01/2023]
Abstract
Series of new Cu(II) complexes were synthesized by classical thermal technique. The biologically potent ligands (L) were prepared by refluxing 6-brom 3-acetyl coumarin with aldehydes in the presence of piperidine in ethanol. The Cu(II) complexes have been synthesized by mixing an aqueous solution of Cu(NO(3))(2) in 1:1 molar ratios with ethanolic bidentate ligands and Clioquinol. The structures of the ligands and their copper complexes were investigated and confirmed by the elemental analysis, FT-IR, (1)H NMR, (13)C NMR, mass spectral and powder X-ray diffraction studies respectively. Thermal behaviour of newly synthesized mixed ligand Cu(II) complexes were investigated by means of thermogravimetry, differential thermogravimetry, differential scanning calorimetry, electronic spectra and magnetic measurements. Dynamic scan of DSC experiments for Cu(II) complexes were taken at different heating rates (2.5-20 °C min(-1)). Kinetic parameters for second step degradation of all complexes obtained by Kissinger's and Ozawa's methods were in good agreement. On the basis of these studies it is clear that ligands coordinated to metal atom in a monobasic bidentate mode, by OO and ON donor system. Thus, suitable octahedral geometry for hexa-coordinated state has been suggested for the metal complexes. Both the ligands as well as its complexes have been screened for their in vitro antioxidant, anti-tubercular and antimicrobial activities. All were found to be significant potent compared to parent ligands employed for complexation.
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Affiliation(s)
- Ketan S Patel
- Chemistry Department, V.P. & R.P.T.P. Science College, Sardar Patel University, Vallabh Vidhyanagar 388 120, Gujarat, India.
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Patil SA, Naik VH, Kulkarni AD, Unki SN, Badami PS. Synthesis, characterization, DNA cleavage, and in-vitro antimicrobial studies of Co(II), Ni(II), and Cu(II) complexes with Schiff bases of coumarin derivatives. J COORD CHEM 2011. [DOI: 10.1080/00958972.2011.594507] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Affiliation(s)
- Sangamesh A. Patil
- a P.G. Department of Chemistry , Karnatak University , Dharwad – 580 003, Karnataka, India
| | - Vinod H. Naik
- a P.G. Department of Chemistry , Karnatak University , Dharwad – 580 003, Karnataka, India
| | - Ajaykumar D. Kulkarni
- a P.G. Department of Chemistry , Karnatak University , Dharwad – 580 003, Karnataka, India
| | - Shrishila N. Unki
- a P.G. Department of Chemistry , Karnatak University , Dharwad – 580 003, Karnataka, India
| | - Prema S. Badami
- b Department of Chemistry , Shri Sharanabasaveswar College of Science , Gulbarga – 585102, Karnataka, India
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New Samarium(III), Gadolinium(III), and Dysprosium(III) Complexes of Coumarin-3-Carboxylic Acid as Antiproliferative Agents. Met Based Drugs 2011; 2007:15925. [PMID: 18274603 PMCID: PMC1894889 DOI: 10.1155/2007/15925] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2006] [Revised: 11/16/2006] [Accepted: 12/27/2006] [Indexed: 11/17/2022] Open
Abstract
New complexes of samarium(III), gadolinium(III), and dysprosium(III) with coumarin-3-carboxylic acid (HCCA) were prepared by the reaction of the ligand with respective metal nitrates in ethanol. The structures of the final complexes were determined by means of physicochemical data, elemental analysis, IR and Raman spectra. The metal-ligand binding mode in the new Ln(III) complexes of coumarin-3-carboxylic acid was elucidated. The vibrational study gave evidence for bidentate coordination of
CCA− to Ln(III) ions through the carbonylic oxygen and the carboxylic oxygen atoms. The complexes were tested for antiproliferative activitiy on the chronic myeloid leukemia-derived K-562, overexpressing the BCR-ABL fusion protein. Cytotoxicity towards tumor cells was determined for a broad concentration range. The samarium salt exerted a very weak antiproliferative effect on these cells. This is in contrast to the lanthanide complexes, especially samarium complex, which exhibited potent antiproliferative activity. The present study confirms our previous observations that the lanthanide complexes of coumarins exhibit antiproliferative activity towards K-562 cell line.
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Synthesis, characterization, in vitro antimicrobial and DNA cleavage studies of Co(II), Ni(II) and Cu(II) complexes with ONOO donor coumarin Schiff bases. J Mol Struct 2011. [DOI: 10.1016/j.molstruc.2010.11.016] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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23
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Kostova I, Amalanathan M, Hubert Joe I. Molecular first order hyperpolarizability and vibrational spectral investigation of Warfarin sodium. Chem Phys 2010. [DOI: 10.1016/j.chemphys.2010.10.008] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Mihaylov T, Trendafilova N, Georgieva I, Kostova I. Coordination properties of warfarin towards Pr(III) predicted from DFT and FT-IR studies. Chem Phys 2010. [DOI: 10.1016/j.chemphys.2010.06.006] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Georgieva I, Kostova I, Trendafilova N, Rastogi VK, Kiefer W. DFT, IR, Raman and NMR study of the coordination ability of coumarin-3-carboxylic acid to Pr(III). J Mol Struct 2010. [DOI: 10.1016/j.molstruc.2010.06.013] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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Kostova I, Stefanova T. Synthesis, characterization and cytotoxic/cytostatic activity of La(III) and Dy(III) complexes. J Trace Elem Med Biol 2010; 24:7-13. [PMID: 20122573 DOI: 10.1016/j.jtemb.2009.06.004] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/22/2008] [Revised: 06/29/2009] [Accepted: 06/30/2009] [Indexed: 11/25/2022]
Abstract
New La(III) and Dy(III) complexes of deprotonated 4-hydroxy-3[1-(4-nitrophenyl)-3-oxobutyl]-2H-1-benzopyran-2-one (Acenocoumarol) were synthesized and characterized using FT-IR, FT-Raman, (1)H NMR spectra, and elemental analyses. The ligand and its lanthanide(III) complexes were tested for their cytotoxic/cytostatic activity against two tumor cell lines and peritoneal mouse macrophages. The La(III) and Dy(III) complexes exhibit good activity against melanoma B16 and fibrosarcoma L929 and they are stronger inhibitors of tumor cell proliferation compared to the ligand without influencing normal cell viability and NO release by mouse peritoneal macrophages.
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Affiliation(s)
- Irena Kostova
- Department of Chemistry, Faculty of Pharmacy, Medical University, 2 Dunav St., Sofia 1000, Bulgaria.
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Kostova I, Stefanova T. Synthesis, characterization and cytotoxic/cytostatic activity of Sm(III) and Gd(III) complexes. J COORD CHEM 2009. [DOI: 10.1080/00958970903019509] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
- Irena Kostova
- a Faculty of Pharmacy, Department of Chemistry , Medical University , 2 Dunav St., Sofia 1000, Bulgaria
| | - Tsvetanka Stefanova
- b Department of Immunology , Institute of Microbiology, Bulgarian Academy of Sciences , 26 Acad. G. Bonchev St., Sofia 1113, Bulgaria
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Bagihalli GB, Patil SA, Badami PS. Synthesis, spectral characterization, in vitro microbial and cytotoxic studies of lanthanum(III) and thorium(IV) complexes with 1,2,4-triazole Schiff bases. J Enzyme Inhib Med Chem 2009; 24:730-41. [DOI: 10.1080/14756360802361571] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022] Open
Affiliation(s)
| | - Sangamesh A. Patil
- P.G. Department of Chemistry, Karnatak University, Dharwad, 580003, Karnataka, India
| | - Prema S. Badami
- Department of Chemistry, Shri Sharanabasaveswar College of Science, Gulbarga, 585102, Karnataka, India
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Synthesis, Characterization, DNA-Binding and Antiproliferative Activity of Nd(III) Complexes With N-(Nitrogen Heterocyclic) Norcantharidin Acylamide Acid. J Fluoresc 2009; 19:857-66. [DOI: 10.1007/s10895-009-0483-x] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2008] [Accepted: 03/27/2009] [Indexed: 10/20/2022]
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30
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Bivalent transition metal complexes of coumarin-3-yl thiosemicarbazone derivatives: Spectroscopic, antibacterial activity and thermogravimetric studies. J Mol Struct 2009. [DOI: 10.1016/j.molstruc.2008.10.059] [Citation(s) in RCA: 79] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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31
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DFT-based molecular modeling and vibrational study of the La(III) complex of 3,3′-(benzylidene)bis(4-hydroxycoumarin). J Mol Model 2008; 14:353-66. [DOI: 10.1007/s00894-008-0277-0] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2007] [Accepted: 01/24/2008] [Indexed: 11/25/2022]
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Kostova I, Trendafilova N, Momekov G. Theoretical, spectral characterization and antineoplastic activity of new lanthanide complexes. J Trace Elem Med Biol 2008; 22:100-11. [PMID: 18565422 DOI: 10.1016/j.jtemb.2007.10.005] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/13/2007] [Revised: 10/10/2007] [Accepted: 10/14/2007] [Indexed: 11/21/2022]
Abstract
The new cerium(III), lanthanum(III) and neodymium(III) complexes were synthesized in view of their application as cytotoxic agents. The complexes were characterized by different physicochemical methods: elemental analysis, mass spectrometry, (1)H NMR, (13)C NMR and IR spectroscopy. The spectra of the complexes were interpreted on the basis of comparison with the spectrum of the free ligand. The vibrational analysis showed that in the complexes the ligand coordinates to the metal ion through both deprotonated hydroxyl groups, however participation of the carbonyl groups in the coordination to the metal ion was also suggested. Geometry optimization of 3,3'-(ortho-pyridinomethylene)di-[4-hydroxycoumarin] H(2)(o-pyhc), (H(2)L) and its dianionic forms, o-pyhc(2-), (L(2-)) were carried out at AM1 and PM3 levels as well as using density functional theory with Becke's three parameter hybrid method and correlation functional of Lee, Yang and Parr (B3LYP) with 6-31G(d) basis set. The optimized geometries of the neutral ligand isomers were stabilized by two asymmetrical intramolecular O-H...O hydrogen bonds (HBs). The conformational search showed four low-energy dianionic species (o-pyhc(2-)) on the potential energy surface. Molecular electrostatic potential calculations showed that the most preferred sites for electrophilic attack in H(2)(o-pyhc) and o-pyhc(2-) are the carbonyl oxygen atoms. The evaluation of the cytotoxic activity of the novel lantanide complexes on HL-60 myeloid cells revealed, that they are potent cytotoxic agents. The cerium complex was found to exhibit superior activity in comparison to the lanthanum, and neodymium species, the latter being the least active. Taken together our data give us a reason to conclude that the newly synthesized lanthanide complexes should be a subset to further more detailed pharmacological and toxicological evaluation.
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Affiliation(s)
- Irena Kostova
- Department of Chemistry, Faculty of Pharmacy, Medical University, 2 Dunav Street, Sofia 1000, Bulgaria.
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Kostova I, Momekov G. New cerium(III) complexes of coumarins – Synthesis, characterization and cytotoxicity evaluation. Eur J Med Chem 2008; 43:178-88. [PMID: 17485146 DOI: 10.1016/j.ejmech.2007.03.007] [Citation(s) in RCA: 44] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2006] [Revised: 03/08/2007] [Accepted: 03/12/2007] [Indexed: 10/23/2022]
Abstract
Complexes of cerium(III) with bis(4-hydroxy-2-oxo-2H-chromen-3-yl)-pyridin-2-yl-methane, bis(4-hydroxy-2-oxo-2H-chromen-3-yl)-pyridin-3-yl-methane and bis(4-hydroxy-2-oxo-2H-chromen-3-yl)-pyridin-4-yl-methane were synthesized by reaction of cerium(III) salt and the ligands, in amounts equal to metal-ligand molar ratio of 1:2. The cerium(III) complexes with bis-coumarins were characterized by different physicochemical methods - elemental analysis, IR-, Raman-, (1)H NMR- and (13)C NMR-spectroscopy and mass-spectral data. The spectral data of cerium(III) complexes were interpreted on the basis of comparison with the spectra of the free ligands. This analysis showed that in the Ce(III) complexes the ligands coordinated to the metal ion through both deprotonated hydroxyl groups. On the basis of the nu(CO) red shift observed, participation of the carbonyl groups in the coordination to the metal ion was also suggested. Cytotoxic screening by MTT assay was carried out. In the present study we performed comparative evaluation of the cytotoxic effects of the three newly synthesized cerium complexes against the acute myeloid leukemia derived HL-60 and the chronic myeloid leukemia (CML)-derived BV-173. In addition the cytotoxic effects of Ce(III) complex with bis(4-hydroxy-2-oxo-2H-chromen-3-yl)-pyridin-2-yl-methane were evaluated on the SKW-3 cells. In order to elucidate some of the mechanistic aspects of the observed cytotoxic effects we evaluated the ability of this complex to trigger programmed cell death (apoptosis by means of agarose gel electrophoretic analysis of DNA, isolated from the cytosolic fraction of treated SKW-3 cells). In addition, microscopic morphological evaluation of the treated cells was carried out in order to establish morphological features indicative of programmed cell death.
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Affiliation(s)
- Irena Kostova
- Department of Chemistry, Faculty of Pharmacy, Medical University, 2 Dunav St., Sofia 1000, Bulgaria.
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Budzisz E, Malecka M, Keppler BK, Arion VB, Andrijewski G, Krajewska U, Rozalski M. Synthesis, Structure, Protolytic Properties, Alkylating and Cytotoxic Activity of Novel Platinum(II) and Palladium(II) Complexes with Pyrazole-Derived Ligands. Eur J Inorg Chem 2007. [DOI: 10.1002/ejic.200700139] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Budzisz E, Małecka M, Lorenz IP, Mayer P, Kwiecień RA, Paneth P, Krajewska U, Rózalski M. Synthesis, cytotoxic effect, and structure-activity relationship of Pd(II) complexes with coumarin derivatives. Inorg Chem 2007; 45:9688-95. [PMID: 17112264 DOI: 10.1021/ic0605569] [Citation(s) in RCA: 53] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
We report the influence of the substituent at the N atom of the ligands on the synthesis, biological activity, and stability of Pd(II) complexes of the general formula PdL(2). The compounds adopt a cis or trans configuration with respect to the substituent at the nitrogen atom. Sterically hindered substituents promote the formation of trans isomers, whereas when the nitrogen atom is unsubstituted, cis isomers are formed. The compounds were characterized by elemental analysis, infrared and 1H NMR spectroscopies, and electrospray mass spectrometry. The complexes were also studied using X-ray diffraction and computational DFT methods. Both complexes cis-3a and trans-3c exhibit square-planar geometries around the Pd(II) atom. The cytotoxic effects of these complexes were examined on two human leukemia cell lines, HL-60 and NALM-6. Pd complex cis-3a showed significant cytotoxic activity. The effects exhibited by this complex were comparable to those reported for carboplatin. Loigand 2a was not cytotoxic. Computational analysis carried out at the PB/B3LYP/LACVP**//mPW1PW91/LanL2DZ level showed excellent correlation between the energy difference of the cis and trans isomers and the cytotoxic activity, rendering computations a useful predictive tool for the design of new drugs.
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Affiliation(s)
- Elzbieta Budzisz
- Department of Cosmetic Raw Materials Chemistry, Faculty of Pharmacy, Medical University of Łódź, Łódź, Poland.
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Kostova I, Momekov G. Synthesis, characterization and cytotoxicity evaluation of new cerium(III), lanthanum(III) and neodymium(III) complexes. Appl Organomet Chem 2007. [DOI: 10.1002/aoc.1205] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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37
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Pansuriya PB, Patel MN. Dicoumarol complexes of Cu(II), Fe(II) and Fe(III): preparation, characterization,in-vitro antibacterial and DNA binding activity. Appl Organomet Chem 2007. [DOI: 10.1002/aoc.1246] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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38
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Kostova I, Rastogi VK, Kiefer W, Kostovski A. New Lanthanum (III) Complex – Synthesis, Characterization, and Cytotoxic Activity. Arch Pharm (Weinheim) 2006; 339:598-607. [PMID: 17048290 DOI: 10.1002/ardp.200600077] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
The complex of lanthanum (III) was synthesized reacting the respective inorganic salt with 5-aminoorotic acid in amounts equal to the metal:ligand molar ratio of 1:3. The complex was prepared by adding an aqueous solution of lanthanum (III) nitrate to an aqueous solution of the ligand, subsequently raising the pH of the mixture gradually to approx. 5.0 through addition of a dilute solution of sodium hydroxide. The structure of the final complex was determined by means of spectral data (IR, Raman,( 1)H-NMR) and elemental analysis. Significant differences in the IR spectrum of the complex were observed as compared to the spectrum of the ligand. A comparative analysis of the Raman spectrum of the complex with that of the free 5-aminoorotic acid allowed a straightforward assignment of the vibrations of the ligand groups involved in coordination. The ligand and the complex were tested for the cytotoxic activities on the chronic myeloid leukemia derived K-562, overexpressing the BCR-ABL fusion protein and the non-Hodgkin lymphoma derived DOHH-2, characterized by a re-expression of the anti-apoptotic protein bcl-2 cell lines. The results obtained indicate that the tested compounds exerted a considerable cytotoxic activity upon the evaluated cell lines in a concentration-dependent matter, which enabled the construction of dose-response curves and the calculation of the corresponding IC(50 )values. The inorganic salt exerted a very weak cytotoxic effect on these cells, which is in contrast to the lanthanum (III) complex.
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Affiliation(s)
- Irena Kostova
- Department of Physics, CCS University, Meerut, India.
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39
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Mihaylov T, Trendafilova N, Kostova I, Georgieva I, Bauer G. DFT modeling and spectroscopic study of metal–ligand bonding in La(III) complex of coumarin-3-carboxylic acid. Chem Phys 2006. [DOI: 10.1016/j.chemphys.2006.04.009] [Citation(s) in RCA: 45] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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40
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Kostova I, Momekov G. New zirconium (IV) complexes of coumarins with cytotoxic activity. Eur J Med Chem 2006; 41:717-26. [PMID: 16697491 DOI: 10.1016/j.ejmech.2006.03.020] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2005] [Revised: 03/16/2006] [Accepted: 03/16/2006] [Indexed: 11/15/2022]
Abstract
Complexes of zirconium (IV) with some bis-coumarin ligands have been synthesized. The zirconium (IV) complexes with bis-coumarins were characterized by different physicochemical methods-elemental analysis, IR-, and (1)H-NMR-spectroscopies and mass spectral data. The spectral data of zirconium (IV) complexes were interpreted on the basis of comparison with the spectra of the free ligands. The results of the ligands and their complexes, based on spectral data are informative and useful for suggestion of the metal-ligand binding mode. Cytotoxic screening by MTT assay was carried out. In the present study we performed comparative evaluation of the cytotoxic effects of the three newly synthesized zirconium complexes against the acute myeloid leukemia derived HL-60 and the chronic myeloid leukemia LAMA-84. The preliminary cytotoxicity screening program revealed that the investigated zirconium complexes induced 50% inhibition of the cell viability of HL-60 and LAMA-84 cells at micromolar concentrations and thus could be considered as biologically active. Independently of the tumor test system evaluated the complex of bis(4-hydroxy-2-oxo-2H-chromen-3-yl)-(1H-pyrazol-3-yl)-methane proved superior to the remaining agents with respect to the IC(50) values obtained. The complexes of both the other coumarins evaluated proved to be less potent than the corresponding free ligands, as evidenced by the IC(50) values obtained. Thus the zirconium complexes with coumarin ligands represent a novel class of antiproliferative agents, which deserve further attention in search of anticancer lead compounds.
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Affiliation(s)
- I Kostova
- Department of Chemistry, Faculty of Pharmacy, Medical University, 2 Dunav Street, Sofia 1000, Bulgaria.
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41
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Peica N, Kostova I, Kiefer W. Theoretical and experimental studies on binding mode of 3,5-pyrazoledicarboxylic acid in its new La(III) complex. Chem Phys 2006. [DOI: 10.1016/j.chemphys.2006.01.017] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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42
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Bastos CC, Freire RO, Rocha GB, Simas AM. Sparkle model for AM1 calculation of neodymium(III) coordination compounds. J Photochem Photobiol A Chem 2006. [DOI: 10.1016/j.jphotochem.2005.06.002] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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43
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44
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Manolov I, Raleva S, Genova P, Savov A, Froloshka L, Dundarova D, Argirova R. Antihuman Immunodeficiency Virus Type 1 (HIV-1) Activity of Rare Earth Metal Complexes of 4-Hydroxycoumarins in Cell Culture. Bioinorg Chem Appl 2006; 2006:71938. [PMID: 17497016 PMCID: PMC1779548 DOI: 10.1155/bca/2006/71938] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2004] [Revised: 03/09/2005] [Accepted: 06/17/2005] [Indexed: 01/12/2023] Open
Abstract
The cerium Ce(III), lanthanum La(III), and neodymium Nd(III) complexes with 4-hydroxy-3-(3-oxo-1-phenylbutyl)-2H-1-benzopyran-2-one (warfarin) (W) and 3,3'-benzylidenebis[4-hydroxycoumarin] (1) were synthesized and studied for the first time for cytotoxicity (on MT-2 cells) and as anti-HIV agents under acute and chronic infection. The complexes were characterized by different physicochemical methods: mass spectrometry, (1)H NMR, (13)C NMR, and IR spectroscopy. The spectra of the complexes were interpreted on the basis of comparison with the spectrum of the free ligands. Anti-HIV effect of the complexes/ligands was measured in MT-2 cells by microtiter infection assay. Detection of endogenous reverse transcriptase (RT) activity and RT processivity by PCR indicative for proviral DNA synthesis demonstrated that anti-HIV activity has not been linked to early stages of viral replication. No effect on late steps of viral replication has been found using cells chronically producing HIV-1(LAI) virus. La(W) demonstrated anti-HIV activity (IC50=21.4 muM) close to maximal nontoxic concentration. Nd(W), Ce(1), and Nd(1) demonstrated limited anti-HIV potency, so none of the complexes seems appropriate to be used in clinic. Further targeting of HIV-1 inhibition by La(W) is under progress.
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Affiliation(s)
- Ilia Manolov
- Department of Organic Chemistry, Faculty of Pharmacy,
Medical University, 2 Dunav Street, 1000 Sofia, Bulgaria
| | - Sevda Raleva
- Department of Virology, National Center of
Infectious and Parasitic Diseases, 44A Stoletov Street, 1233
Sofia, Bulgaria
| | - Petya Genova
- Department of Virology, National Center of
Infectious and Parasitic Diseases, 44A Stoletov Street, 1233
Sofia, Bulgaria
| | - Alexey Savov
- Laboratory of Molecular Pathology, Medical
University, 2 Zdrave Street, 1606 Sofia, Bulgaria
| | - Liliana Froloshka
- Department of Virology, National Center of
Infectious and Parasitic Diseases, 44A Stoletov Street, 1233
Sofia, Bulgaria
| | - Daniela Dundarova
- Department of Virology, National Center of
Infectious and Parasitic Diseases, 44A Stoletov Street, 1233
Sofia, Bulgaria
| | - Radka Argirova
- Department of Virology, National Center of
Infectious and Parasitic Diseases, 44A Stoletov Street, 1233
Sofia, Bulgaria
- * Radka Argirova:
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45
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Kostova I, Momekov G, Tzanova T, Karaivanova M. Synthesis, characterization, and cytotoxic activity of new lanthanum(III) complexes of bis-coumarins. Bioinorg Chem Appl 2006; 2006:25651. [PMID: 17497005 PMCID: PMC1686302 DOI: 10.1155/bca/2006/25651] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2004] [Revised: 03/16/2005] [Accepted: 03/21/2005] [Indexed: 01/12/2023] Open
Abstract
Complexes of lanthanum(III) with bis-coumarins: 3,3'-benzylidene-bis(4-hydroxy-2H-1-benzopyran-2-one) (H(2)L1) and bis(4-hydroxy-2-oxo-2H-chromen-3-yl)-(1H-pyrazol-3-yl)-methane (H(2)L2) were synthesized by reaction of lanthanum(III) salt and the ligands, in amounts equal to metal : ligand molar ratio of 1 : 2. The complexes were prepared by adding an aqueous solution of lanthanum(III) salt to an aqueous solution of the ligand subsequently raising the pH of the mixture gradually to circa 5.0 by adding dilute solution of sodium hydroxide. The lanthanum(III) complexes with bis-coumarins were characterized by different physicochemical methods-elemental analysis, IR-, (1)H-, and (13)C-NMR-spectroscopies, and mass spectral data. The spectral data of lanthanum(III) complexes were interpreted on the basis of comparison with the spectra of the free ligands. This analysis showed that in the La(III) complexes, the ligands coordinated to the metal ion through both deprotonated hydroxyl groups. On the basis of the nu(C=O) red shift observed, participation of the carbonyl groups in the coordination with the metal ion was also suggested. In the present study, we performed a cytotoxic-effects screening of the lanthanum complexes with H(2)L1 and H(2)L2 in a panel of human tumor cell lines, using the standard MTT-dye reduction assay for cell viability. The panel consisted of the acute myeloid leukemia-derived HL-60 and the chronic myeloid leukemia-derived BV-173. Following a 24- hour treatment of BV-173 cells with lanthanum complex of H(2)L1 at 100 or 200 microM led to a DNA-laddering. The findings suggest that the observed cytotoxicity of the lanthanum complex of H(2)L1 on BV-173 is at least partly mediated through induction of programmed cell death.
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Affiliation(s)
- Irena Kostova
- Department of Chemistry, Faculty of Pharmacy, Medical University,
2 Dunav Street, Sofia 1000, Bulgaria
- *Irena Kostova:
| | - Georgi Momekov
- Department of Pharmacology and Toxicology, Faculty of Pharmacy,
Medical University, 2 Dunav Street, Sofia 1000, Bulgaria
| | - Tzvetomira Tzanova
- Department of Pharmacology and Toxicology, Faculty of Pharmacy,
Medical University, 2 Dunav Street, Sofia 1000, Bulgaria
| | - Margarita Karaivanova
- Department of Pharmacology and Toxicology, Faculty of Pharmacy,
Medical University, 2 Dunav Street, Sofia 1000, Bulgaria
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46
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Budzisz E, Małecka M, Woźniczka M, Kufelnicki A. Crystal structure, protolytic properties and alkylating activity of 3-(1-amino-ethylidene)-2-methoxy-2-oxo-2,3-dihydro-2λ5-benzo[e][1,2]oxaphosphinin-4-one. J Mol Struct 2005. [DOI: 10.1016/j.molstruc.2005.06.008] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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47
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Kostova I, Manolov I, Momekov G, Tzanova T, Konstantinov S, Karaivanova M. Cytotoxic activity of new cerium (III) complexes of bis-coumarins. Eur J Med Chem 2005; 40:1246-54. [PMID: 16143428 DOI: 10.1016/j.ejmech.2005.07.010] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2004] [Revised: 06/23/2005] [Accepted: 07/01/2005] [Indexed: 11/16/2022]
Abstract
Complexes of cerium (III) with bis-coumarins: 3,3'-benzylidene-bis(4-hydroxy-2H-1-benzopyran-2-one) and bis(4-hydroxy-2-oxo-2H-chromen-3-yl)-(1H-pyrazol-3-yl)-methane were synthesized by reaction of cerium (III) salt and the ligands, in amounts equal to metal/ligand molar ratio of 1:2. The complexes were prepared by adding an aqueous solution of cerium (III) salt to an aqueous solution of the ligand subsequently raising the pH of the mixture gradually to ca. 5.0 by adding dilute solution of sodium hydroxide. The cerium (III) complexes with bis-coumarins were characterized by different physicochemical methods--elemental analysis, IR-, 1H- and 13C-NMR-spectroscopies and mass-spectral data. The spectral data of cerium (III) complexes were interpreted on the basis of comparison with the spectra of the free ligands. This analysis showed that in the Ce (III) complexes the ligands coordinated to the metal ion through both deprotonated hydroxyl groups. On the basis of the nu(C=O) red shift observed, participation of the carbonyl groups in the coordination to the metal ion was also suggested. Cytotoxic screening by MTT assay was carried out. In the present study we performed comparative evaluation of the cytotoxic effects of the two newly synthesized cerium complexes against the acute myeloid leukemia derived HL-60 and the chronic myeloid leukemia (CML)-derived BV-173. In addition the cytotoxic effects of Ce (III) complex with 3,3'-benzylidene-bis(4-hydroxy-2H-1-benzopyran-2-one) were evaluated on the CML-derived K-562 and LAMA-84 cells, characterized by relative low responsiveness to chemotherapy. The DNA isolated from the cytosolic fraction of BV-173 cells after 24 h treatment with the same complex (at 100 and 200 microM) demonstrated a laddering phenomenon that is indicative for apoptotic cell death.
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Affiliation(s)
- Irena Kostova
- Department of Chemistry, Faculty of Pharmacy, Medical University, 2 Dunav Street, Sofia 1000, Bulgaria.
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48
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Kostova I, Trendafilova N, Mihaylov T. Theoretical and spectroscopic studies of pyridyl substituted bis-coumarins and their new neodymium (III) complexes. Chem Phys 2005. [DOI: 10.1016/j.chemphys.2005.01.026] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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49
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Kostova I, Momekov G, Zaharieva M, Karaivanova M. Cytotoxic activity of new lanthanum (III) complexes of bis-coumarins. Eur J Med Chem 2005; 40:542-51. [PMID: 15922838 DOI: 10.1016/j.ejmech.2004.12.007] [Citation(s) in RCA: 94] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2004] [Revised: 12/20/2004] [Accepted: 12/21/2004] [Indexed: 11/28/2022]
Abstract
Complexes of lanthanum (III) with bis-coumarins: bis(4-hydroxy-2-oxo-2H-chromen-3-yl)-piridin-2-yl-methane; bis(4-hydroxy-2-oxo-2H-chromen-3-yl)-piridin-3-yl-methane and bis(4-hydroxy-2-oxo-2H-chromen-3-yl)-piridin-4-yl-methane were synthesized by reaction of lanthanum (III) salt and the ligands, in amounts equal to metal/ligand molar ratio of 1:2. The complexes were prepared by adding an aqueous solution of lanthanum (III) salt to an aqueous solution of the ligand subsequently raising the pH of the mixture gradually to ca. 5.0 by adding dilute solution of sodium hydroxide. The lanthanum (III) complexes with bis-coumarins were characterized by different physicochemical methods-elemental analysis, IR-, (1)H- and 13C-NMR spectroscopies and mass-spectral data. The spectral data of lanthanum (III) complexes were interpreted on the basis of comparison with the spectra of the free ligands. This analysis showed that in the La (III) complexes the ligands coordinated to the metal ion through both deprotonated hydroxyl groups. On the basis of the nu(C=O) red shift observed, participation of the carbonyl groups in the coordination to the metal ion was also suggested. Cytotoxic screening by MTT assay was carried out. In the present study, we performed comparative evaluation of the cytotoxic effects of the three newly synthesized lanthanum complexes against the acute myeloid leukemia derived HL-60 and the chronic myeloid leukemia (CML)-derived BV-173. In addition the cytotoxic effects of La (III) complex with bis(4-hydroxy-2-oxo-2H-chromen-3-yl)-piridin-2-yl-methane were evaluated on the SKW-3 cells. In order to elucidate some of the mechanistic aspects of the observed cytotoxic effects we evaluated the ability of this complex to trigger programmed cell death (apoptosis by means of agarose gel electrophoretic analysis of DNA), isolated from the cytosolic fraction of treated SKW-3 cells. In addition, microscopic morphological evaluation of the treated cells was carried out in order to establish morphological features indicative for programmed cell death.
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Affiliation(s)
- Irena Kostova
- Department of Chemistry, Faculty of Pharmacy, Medical University, 2 Dunav Street, Sofia 1000, Bulgaria.
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50
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Kostova I, Trendafilova N, Momekov G. Theoretical and spectroscopic evidence for coordination ability of 3,3'-benzylidenedi-4-hydroxycoumarin. New neodymium (III) complex and its cytotoxic effect. J Inorg Biochem 2005; 99:477-87. [PMID: 15621280 DOI: 10.1016/j.jinorgbio.2004.10.022] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2004] [Revised: 10/13/2004] [Accepted: 10/18/2004] [Indexed: 10/26/2022]
Abstract
Theoretical and spectroscopic studies of 3,3'-benzylidenedi-4-hydroxycoumarin (bhc) have been performed. B3LYP/6-31G* calculations reproduced the experimental molecular structure of bhc and showed two O-H...O asymmetrical intramolecular hydrogen bonds with O...O distances 2.638 and 2.696 A. The calculated Fukui functions and Molecular Electrostatic Potential for bhc and its deprotonated form, bhc(2-), predicted that the most probable reactive sites for electrophilic attack and hydrogen bonds are the carbonyl oxygens, followed by the hydroxyl oxygens. The coordination ability of 3,3'-benzylidenedi-4-hydroxycoumarin has been proved in a complexation reaction with neodymium (III) ion. The new neodymium (III) complex of bhc was studied by elemental analyses, conductivity and other physical properties, mass spectra, (1)H, (13)C NMR, UV-Vis and IR spectroscopy. The data obtained are in agreement with the metal:ligand ratio of 1:1, and the formula Nd(bhc(2-))(OH)(H(2)O), where bhc(2-)=C(25)H(14)O(6)(2-). The vibrational analysis of the neodymium (III) complex, free bhc, and its monomeric building block, 4-hydroxycoumarin, showed that in the Nd(III) complex the ligand coordinates to the metal ion through both deprotonated hydroxyl groups. The participation of both carbonyl groups in coordination to the metal ion was confirmed by the significant shift of nu(C=O) to lower wavenumber. The evaluation of the cytotoxic activity of the new Nd(III) complex on SKW-3 and HL-60/Dox cells revealed, that it is a potent cytotoxic agent and should be subset further to more detailed pharmacological and toxicological study.
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Affiliation(s)
- Irena Kostova
- Department of Chemistry, Faculty of Pharmacy, Medical University, 2 Dunav St. Sofia 1000, Bulgaria.
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