51
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Tong JQ, Tian FF, Liu Y, Jiang FL. Comprehensive study of the adsorption of an acylhydrazone derivative by serum albumin: unclassical static quenching. RSC Adv 2014. [DOI: 10.1039/c4ra09107h] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
NCH binds to both HSA and BSA in site I and causes unclassical static quenching.
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Affiliation(s)
- Jin-Qiang Tong
- College of Chemical and Environmental Engineering
- Yangtze University
- Jinzhou 434023, P. R. China
| | - Fang-Fang Tian
- State Key Laboratory of Virology & Key Laboratory of Analytical Chemistry for Biology and Medicine (MOE)
- College of Chemistry and Molecular Sciences
- Wuhan University
- Wuhan 430072, P. R. China
| | - Yi Liu
- College of Chemical and Environmental Engineering
- Yangtze University
- Jinzhou 434023, P. R. China
- State Key Laboratory of Virology & Key Laboratory of Analytical Chemistry for Biology and Medicine (MOE)
- College of Chemistry and Molecular Sciences
| | - Feng-Lei Jiang
- State Key Laboratory of Virology & Key Laboratory of Analytical Chemistry for Biology and Medicine (MOE)
- College of Chemistry and Molecular Sciences
- Wuhan University
- Wuhan 430072, P. R. China
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52
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Complexes with a tridentate aroylhydrazone ligand: Microwave solid-state synthesis, crystalline architectures through supramolecular interactions and electrochemical properties. Polyhedron 2014. [DOI: 10.1016/j.poly.2013.10.013] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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53
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Jing-lin W, Ya-qin Z, Bin-sheng Y. Transition metal complexes of asymmetrical aroyl-hydrazone ligand: Syntheses, structures, DNA binding and cleavage studies. Inorganica Chim Acta 2014. [DOI: 10.1016/j.ica.2013.09.001] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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54
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Congiu C, Onnis V. Synthesis and biological evaluation of novel acylhydrazone derivatives as potential antitumor agents. Bioorg Med Chem 2013; 21:6592-9. [DOI: 10.1016/j.bmc.2013.08.026] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2013] [Revised: 08/08/2013] [Accepted: 08/12/2013] [Indexed: 12/31/2022]
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55
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Hosseini-Monfared H, Asghari-Lalami N, Pazio A, Wozniak K, Janiak C. Dinuclear vanadium, copper, manganese and titanium complexes containing O,O,N-dichelating ligands: Synthesis, crystal structure and catalytic activity. Inorganica Chim Acta 2013. [DOI: 10.1016/j.ica.2013.04.044] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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56
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Syntheses, structures and magnetic properties of azido- and phenoxo-bridged complexes of manganese containing tridentate aroylhydrazone based ligands. Polyhedron 2013. [DOI: 10.1016/j.poly.2013.05.033] [Citation(s) in RCA: 47] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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57
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58
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Synthesis and biological evaluation of substituted 2-benzoylpyridine thiosemicarbazones: Novel structure–activity relationships underpinning their anti-proliferative and chelation efficacy. Bioorg Med Chem Lett 2013; 23:967-74. [DOI: 10.1016/j.bmcl.2012.12.044] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2012] [Accepted: 12/13/2012] [Indexed: 01/17/2023]
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59
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Hosseini-Monfared H, Falakian H, Bikas R, Mayer P. Intramolecular hydrogen bond effect on keto-enolization of aroylhydrazone in copper(II) complexes. Inorganica Chim Acta 2013. [DOI: 10.1016/j.ica.2012.08.022] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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60
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Synthesis and Characterization of Reversible Chemosensory Polymers: Modulation of Sensitivity through the Attachment of Novel Imidazole Pendants. Chemistry 2012; 18:16061-72. [DOI: 10.1002/chem.201201437] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2012] [Revised: 09/05/2012] [Indexed: 11/07/2022]
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61
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Serda M, Kalinowski DS, Mrozek-Wilczkiewicz A, Musiol R, Szurko A, Ratuszna A, Pantarat N, Kovacevic Z, Merlot AM, Richardson DR, Polanski J. Synthesis and characterization of quinoline-based thiosemicarbazones and correlation of cellular iron-binding efficacy to anti-tumor efficacy. Bioorg Med Chem Lett 2012; 22:5527-31. [DOI: 10.1016/j.bmcl.2012.07.030] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2012] [Revised: 07/05/2012] [Accepted: 07/06/2012] [Indexed: 01/08/2023]
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62
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Synthesis, structural characterization and electrochemical studies of an ionic cobalt complex derived from a tridentate hydrazone Schiff base and azide ligands. INORG CHEM COMMUN 2012. [DOI: 10.1016/j.inoche.2011.10.012] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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63
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Tian FF, Li JH, Jiang FL, Han XL, Xiang C, Ge YS, Li LL, Liu Y. The adsorption of an anticancer hydrazone by protein: an unusual static quenching mechanism. RSC Adv 2012. [DOI: 10.1039/c1ra00521a] [Citation(s) in RCA: 61] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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64
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Tong JQ, Tian FF, Li Q, Li LL, Xiang C, Liu Y, Dai J, Jiang FL. Probing the adverse temperature dependence in the static fluorescence quenching of BSA induced by a novel anticancer hydrazone. Photochem Photobiol Sci 2012; 11:1868-79. [DOI: 10.1039/c2pp25162k] [Citation(s) in RCA: 63] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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65
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Binuclear vanadium(V) complexes of bis(aryl)adipohydrazone: synthesis, spectroscopic studies, crystal structure and catalytic activity. TRANSIT METAL CHEM 2011. [DOI: 10.1007/s11243-011-9517-8] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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66
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Trzesowska-Kruszynska A. Exploring the structural, electronic and optical properties of furan-2-carboxaldehyde and 2-acetylthiophene nicotinoylhydrazone. Struct Chem 2010. [DOI: 10.1007/s11224-010-9717-4] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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67
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Sarkar S, Dey K. A series of transition and non-transition metal complexes from a N₄O₂ hexadentate Schiff base ligand: Synthesis, spectroscopic characterization and efficient antimicrobial activities. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2010; 77:740-748. [PMID: 20801711 DOI: 10.1016/j.saa.2010.06.041] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/09/2010] [Revised: 06/19/2010] [Accepted: 06/28/2010] [Indexed: 05/29/2023]
Abstract
Some transition and non-transition metal complexes of the hexadentate N₄O₂ donor Schiff base ligand 1,8-N-bis(3-carboxy)disalicylidene-3,6-diazaoctane-1,8-diamine, abbreviated to H₄fsatrien, have been synthesized. All the 14 metal complexes have been fully characterized with the help of elemental analyses, molecular weights, molar conductance values, magnetic moments and spectroscopic (UV-Vis, IR, NMR, ESR) data. The analytical data helped to elucidate the structures of the metal complexes. The Schiff base, H₄fsatrien, is found to act as a dibasic hexadentate ligand using N₂N₂O₂ donor set of atoms (leaving the COOH group uncoordinated) leading to an octahedral geometry for the complexes around all the metal ions except VO²(+) and UO₂²(+). However, surprisingly the same ligand functions as a neutral hexadentate and neutral tetradentate one towards UO₂²(+) and VO²(+), respectively. In case of divalent metal complexes they have the general formula [M(H₂fsatrien)] (where M stands for Cu, Co, Hg and Zn); for trivalent metal complexes it is [M(H₂fsatrien)]X·nH₂O (where M stands for Cr, Mn, Fe, Co and X stands for CH₃COO, Cl, NO₃, ClO₄) and for the complexes of VO²(+) and UO₂²(+), [M(H₄fsatrien)]Y (where M=VO and Y=SO₄); M=UO₂ and Y=2 NO₃). The Schiff base ligand and most of the complexes have been screened in vitro to judge their antibacterial (Escherichia coli and Staphylococcus aureus) and antifungal (Aspergillus niger and Pencillium chrysogenum) activities.
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Affiliation(s)
- Saikat Sarkar
- Department of Chemistry, Santipur College, Santipur 741404, West Bengal, India.
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68
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Tian FF, Jiang FL, Han XL, Xiang C, Ge YS, Li JH, Zhang Y, Li R, Ding XL, Liu Y. Synthesis of a Novel Hydrazone Derivative and Biophysical Studies of Its Interactions with Bovine Serum Albumin by Spectroscopic, Electrochemical, and Molecular Docking Methods. J Phys Chem B 2010; 114:14842-53. [DOI: 10.1021/jp105766n] [Citation(s) in RCA: 218] [Impact Index Per Article: 15.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Fang-Fang Tian
- State Key Laboratory of Virology & Key Laboratory of Analytical Chemistry for Biology and Medicine (Ministry of Education), College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, P. R. China
| | - Feng-Lei Jiang
- State Key Laboratory of Virology & Key Laboratory of Analytical Chemistry for Biology and Medicine (Ministry of Education), College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, P. R. China
| | - Xiao-Le Han
- State Key Laboratory of Virology & Key Laboratory of Analytical Chemistry for Biology and Medicine (Ministry of Education), College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, P. R. China
| | - Chen Xiang
- State Key Laboratory of Virology & Key Laboratory of Analytical Chemistry for Biology and Medicine (Ministry of Education), College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, P. R. China
| | - Yu-Shu Ge
- State Key Laboratory of Virology & Key Laboratory of Analytical Chemistry for Biology and Medicine (Ministry of Education), College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, P. R. China
| | - Jia-Han Li
- State Key Laboratory of Virology & Key Laboratory of Analytical Chemistry for Biology and Medicine (Ministry of Education), College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, P. R. China
| | - Yue Zhang
- State Key Laboratory of Virology & Key Laboratory of Analytical Chemistry for Biology and Medicine (Ministry of Education), College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, P. R. China
| | - Ran Li
- State Key Laboratory of Virology & Key Laboratory of Analytical Chemistry for Biology and Medicine (Ministry of Education), College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, P. R. China
| | - Xin-Liang Ding
- State Key Laboratory of Virology & Key Laboratory of Analytical Chemistry for Biology and Medicine (Ministry of Education), College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, P. R. China
| | - Yi Liu
- State Key Laboratory of Virology & Key Laboratory of Analytical Chemistry for Biology and Medicine (Ministry of Education), College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, P. R. China
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69
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Andrade MM, Barros MT. Fast synthesis of N-acylhydrazones employing a microwave assisted neat protocol. ACTA ACUST UNITED AC 2010; 12:245-7. [PMID: 20050700 DOI: 10.1021/cc9001444] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A variety of N-acylhydrazones were synthesized under microwave irradiation within 2.5-10 min, starting from benzo, salicyloyl, and isonicotinic hydrazides. The protocol developed employs microwave irradiation in the absence of solvents and catalysts, leading to high yields. The results are reproducible in a 500 mg to 5 g scale.
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Affiliation(s)
- Marta M Andrade
- REQUIMTE, CQFB, Departamento de Quimica, Faculdade de Ciencias e Tecnologia, Universidade Nova de Lisboa, 2829-516 Caparica, Portugal.
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70
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Bendova P, Mackova E, Haskova P, Vavrova A, Jirkovsky E, Sterba M, Popelova O, Kalinowski DS, Kovarikova P, Vavrova K, Richardson DR, Simunek T. Comparison of Clinically Used and Experimental Iron Chelators for Protection against Oxidative Stress-Induced Cellular Injury. Chem Res Toxicol 2010; 23:1105-14. [DOI: 10.1021/tx100125t] [Citation(s) in RCA: 55] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Petra Bendova
- Faculty of Pharmacy in Hradec Kralove and Faculty of Medicine in Hradec Kralove, Charles University in Prague, Heyrovskeho 1203, 500 05 Hradec Kralove, Czech Republic, and Iron Metabolism and Chelation Program, Bosch Institute and Department of Pathology, University of Sydney, Sydney 2006, Australia
| | - Eliska Mackova
- Faculty of Pharmacy in Hradec Kralove and Faculty of Medicine in Hradec Kralove, Charles University in Prague, Heyrovskeho 1203, 500 05 Hradec Kralove, Czech Republic, and Iron Metabolism and Chelation Program, Bosch Institute and Department of Pathology, University of Sydney, Sydney 2006, Australia
| | - Pavlina Haskova
- Faculty of Pharmacy in Hradec Kralove and Faculty of Medicine in Hradec Kralove, Charles University in Prague, Heyrovskeho 1203, 500 05 Hradec Kralove, Czech Republic, and Iron Metabolism and Chelation Program, Bosch Institute and Department of Pathology, University of Sydney, Sydney 2006, Australia
| | - Anna Vavrova
- Faculty of Pharmacy in Hradec Kralove and Faculty of Medicine in Hradec Kralove, Charles University in Prague, Heyrovskeho 1203, 500 05 Hradec Kralove, Czech Republic, and Iron Metabolism and Chelation Program, Bosch Institute and Department of Pathology, University of Sydney, Sydney 2006, Australia
| | - Eduard Jirkovsky
- Faculty of Pharmacy in Hradec Kralove and Faculty of Medicine in Hradec Kralove, Charles University in Prague, Heyrovskeho 1203, 500 05 Hradec Kralove, Czech Republic, and Iron Metabolism and Chelation Program, Bosch Institute and Department of Pathology, University of Sydney, Sydney 2006, Australia
| | - Martin Sterba
- Faculty of Pharmacy in Hradec Kralove and Faculty of Medicine in Hradec Kralove, Charles University in Prague, Heyrovskeho 1203, 500 05 Hradec Kralove, Czech Republic, and Iron Metabolism and Chelation Program, Bosch Institute and Department of Pathology, University of Sydney, Sydney 2006, Australia
| | - Olga Popelova
- Faculty of Pharmacy in Hradec Kralove and Faculty of Medicine in Hradec Kralove, Charles University in Prague, Heyrovskeho 1203, 500 05 Hradec Kralove, Czech Republic, and Iron Metabolism and Chelation Program, Bosch Institute and Department of Pathology, University of Sydney, Sydney 2006, Australia
| | - Danuta S. Kalinowski
- Faculty of Pharmacy in Hradec Kralove and Faculty of Medicine in Hradec Kralove, Charles University in Prague, Heyrovskeho 1203, 500 05 Hradec Kralove, Czech Republic, and Iron Metabolism and Chelation Program, Bosch Institute and Department of Pathology, University of Sydney, Sydney 2006, Australia
| | - Petra Kovarikova
- Faculty of Pharmacy in Hradec Kralove and Faculty of Medicine in Hradec Kralove, Charles University in Prague, Heyrovskeho 1203, 500 05 Hradec Kralove, Czech Republic, and Iron Metabolism and Chelation Program, Bosch Institute and Department of Pathology, University of Sydney, Sydney 2006, Australia
| | - Katerina Vavrova
- Faculty of Pharmacy in Hradec Kralove and Faculty of Medicine in Hradec Kralove, Charles University in Prague, Heyrovskeho 1203, 500 05 Hradec Kralove, Czech Republic, and Iron Metabolism and Chelation Program, Bosch Institute and Department of Pathology, University of Sydney, Sydney 2006, Australia
| | - Des R. Richardson
- Faculty of Pharmacy in Hradec Kralove and Faculty of Medicine in Hradec Kralove, Charles University in Prague, Heyrovskeho 1203, 500 05 Hradec Kralove, Czech Republic, and Iron Metabolism and Chelation Program, Bosch Institute and Department of Pathology, University of Sydney, Sydney 2006, Australia
| | - Tomas Simunek
- Faculty of Pharmacy in Hradec Kralove and Faculty of Medicine in Hradec Kralove, Charles University in Prague, Heyrovskeho 1203, 500 05 Hradec Kralove, Czech Republic, and Iron Metabolism and Chelation Program, Bosch Institute and Department of Pathology, University of Sydney, Sydney 2006, Australia
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71
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Liu J, Obando D, Schipanski LG, Groebler LK, Witting PK, Kalinowski DS, Richardson DR, Codd R. Conjugates of desferrioxamine B (DFOB) with derivatives of adamantane or with orally available chelators as potential agents for treating iron overload. J Med Chem 2010; 53:1370-82. [PMID: 20041672 DOI: 10.1021/jm9016703] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Desferrioxamine B (DFOB) conjugates with adamantane-1-carboxylic acid, 3-hydroxyadamantane-1-carboxylic acid, 3,5-dimethyladamantane-1-carboxylic acid, adamantane-1-acetic acid, 4-methylphenoxyacetic acid, 3-hydroxy-2-methyl-4-oxo-1-pyridineacetic acid (N-acetic acid derivative of deferiprone), or 4-[3,5-bis(2-hydroxyphenyl)-1,2,4-triazol-1-yl]benzoic acid (deferasirox) were prepared and the integrity of Fe(III) binding of the compounds was established from electrospray ionization mass spectrometry and RP-HPLC measurements. The extent of intracellular (59)Fe mobilized by the DFOB-3,5-dimethyladamantane-1-carboxylic acid adduct was 3-fold greater than DFOB alone, and the IC(50) value of this adduct was 6- or 15-fold greater than DFOB in two different cell types. The relationship between logP and (59)Fe mobilization for the DFOB conjugates showed that maximal mobilization of intracellular (59)Fe occurred at a logP value approximately 2.3. This parameter, rather than the affinity for Fe(III), appears to influence the extent of intracellular (59)Fe mobilization. The low toxicity-high Fe mobilization efficacy of selected adamantane-based DFOB conjugates underscores the potential of these compounds to treat iron overload disease in patients with transfusional-dependent disorders such as beta-thalassemia.
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Affiliation(s)
- Joe Liu
- School of Medical Sciences (Pharmacology) and Bosch Institute, University of Sydney, New South Wales 2006, Australia
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72
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Karbouj R, El-Dissouky A, Jeragh B, Al-Saleh E. Synthesis, characterization, and biological activity studies on (E)-N′-[2-hydroxy-1,2-di(pyridin-2-yl)ethylidine]aroyl hydrazides and their copper(II) complexes. J COORD CHEM 2010. [DOI: 10.1080/00958971003645946] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
- Reem Karbouj
- a Faculty of Science, Department of Chemistry , Kuwait University , PO Box 5969, Safat 13060, Kuwait
| | - Ali El-Dissouky
- a Faculty of Science, Department of Chemistry , Kuwait University , PO Box 5969, Safat 13060, Kuwait
| | - Bakir Jeragh
- a Faculty of Science, Department of Chemistry , Kuwait University , PO Box 5969, Safat 13060, Kuwait
| | - Esmaeil Al-Saleh
- b Faculty of Science, Department Biology (Microbiology Group) , Kuwait University , PO Box 5969, Safat 13060, Kuwait
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74
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Manlove A, Groziak MP. Chapter 6.2: Six-Membered Ring Systems: Diazines and Benzo Derivatives. PROGRESS IN HETEROCYCLIC CHEMISTRY 2009. [DOI: 10.1016/s0959-6380(09)70040-6] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/04/2022]
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75
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Zhan XH. ( E)- N′-(4-Hydroxybenzylidene)-2-methoxybenzohydrazide. Acta Crystallogr Sect E Struct Rep Online 2008; 64:o1999. [PMID: 21201197 PMCID: PMC2959369 DOI: 10.1107/s1600536808029334] [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: 09/04/2008] [Accepted: 09/12/2008] [Indexed: 11/11/2022]
Abstract
The title compound, C15H14N2O3, exists in the E configuration with respect to the central methylidene unit. The dihedral angle between the two substituted benzene rings is 22.0 (2)°. Within the molecule there is an intramolecular N—H⋯O hydrogen bond involving the hydrozide H atom and the O atom of the methoxy substituent on the adjacent phenyl ring. In the crystal structure, molecules are linked through intermolecular O—H⋯O hydrogen bonds, forming zigzag chains along the b direction.
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76
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Peng SJ, Hou HY. (E)-N'-(2-Hydr-oxy-4-methoxy-benzyl-idene)isonicotinohydrazide monohydrate. Acta Crystallogr Sect E Struct Rep Online 2008; 64:o1996-7. [PMID: 21201195 PMCID: PMC2959424 DOI: 10.1107/s1600536808029619] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2008] [Accepted: 09/16/2008] [Indexed: 11/19/2022]
Abstract
The title compound, C14H13N3O3·H2O, was prepared by the reaction of 4-methoxysalicylaldehyde and isonicotinohydrazide in ethanol. The Schiff base molecule is not planar and has an E configuration with respect to the methylidene unit. The dihedral angle between the benzene and pyridine rings is 36.8 (2)°. In the molecule there is an intramolecular O—H⋯N hydrogen bond involving the hydroxyl substituent and the N atom of the 2-hydroxy-4-methoxybenzylidene unit. In the crystal, the molecules are linked through intermolecular O—H⋯O, O—H⋯N and N—H⋯O hydrogen bonds, forming layers parallel to the bc plane.
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77
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Peng SJ, Hou HY. N'-(5-Bromo-2-hydr-oxy-3-methoxy-benzyl-idene)isonicotinohydrazide. Acta Crystallogr Sect E Struct Rep Online 2008; 64:o1995. [PMID: 21201194 PMCID: PMC2959402 DOI: 10.1107/s1600536808029607] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2008] [Accepted: 09/16/2008] [Indexed: 11/11/2022]
Abstract
The title compound, C14H12BrN3O3, was prepared by reaction of 5-bromo-3-methoxysalicylaldehyde and isonicotinohydrazide in methanol. The molecule is not planar and adopts a trans configuration with respect to the C=N bond. There is an intramolecular O—H⋯N hydrogen bond in the molecule. The dihedral angle between the benzene and pyridine rings is 12.2 (2)°. In the crystal structure, molecules are linked through intermolecular N—H⋯N hydrogen bonds, forming chains running along the c-axis direction.
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Opletalová V, Kalinowski DS, Vejsová M, Kunes J, Pour M, Jampílek J, Buchta V, Richardson DR. Identification and characterization of thiosemicarbazones with antifungal and antitumor effects: cellular iron chelation mediating cytotoxic activity. Chem Res Toxicol 2008; 21:1878-89. [PMID: 18698850 DOI: 10.1021/tx800182k] [Citation(s) in RCA: 52] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Thiosemicarbazones derived from acetylpyrazines were prepared by condensing an acetylpyrazine or a ring-substituted acetylpyrazine with thiosemicarbazide. Using the same procedure, N, N-dimethylthiosemicarbazones were synthesized from acetylpyrazines and N, N-dimethylthiosemicarbazide. A total of 20 compounds (16 novel) were chemically characterized and then tested for antifungal effects on eight strains of fungi and also for antitumor activity against SK-N-MC neuroepithelioma cells. The most effective compound identified in terms of both antifungal and antitumor activity was N, N-dimethyl-2-(1-pyrazin-2-ylethylidene)hydrazinecarbothioamide (5a). The mechanism of action of this and its related thiosemicarbazones was due, at least in part, to its ability to act as a tridentate ligand that binds metal ions. This was deduced from preparation of the related thiosemicarbazones [acetophenone thiosemicarbazone (6) and acetophenone N, N-dimethylthiosemicarbazone (7)] that do not possess a coordinating ring-N, which plays a vital role in metal ion chelation. Furthermore, 5a and several other thiosemicarbazones that showed high antiproliferative activity were demonstrated to have marked iron (Fe) chelation efficacy. In fact, these agents were highly effective at mobilizing (59)Fe from prelabeled SK-N-MC cells and preventing (59)Fe uptake from the serum Fe transport protein, transferrin. In contrast, compounds 6 and 7 that do not possess a tridentate metal-binding site showed little activity. Further studies examining ascorbate oxidation demonstrated that the Fe complexes of the most effective compounds were redox-inactive. Thus, in contrast to other thiosemicarbazones with potent antiproliferative activity, Fe chelation and mobilization rather than free radical generation played a significant role in the cytotoxic effects of the current ligands.
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Affiliation(s)
- Veronika Opletalová
- Faculty of Pharmacy in Hradec Kralove, Charles University in Prague, Hradec Kralove, Czech Republic
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