101
|
Griffith DM, Haughey A, Chahal S, Müller-Bunz H, Marmion CJ. Novel palladium(II) and platinum(II) complexes of biocidal benzisothiazolinone (Bit); X-ray crystal structures of co-crystallised Bit/BitO and cis-Pd(en)(Bit−1H)2·H2O. Inorganica Chim Acta 2010. [DOI: 10.1016/j.ica.2010.02.005] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
|
102
|
Vystorop IV, Konovalova NP, Nelyubina YV, Varfolomeev VN, Fedorov BS, Sashenkova TE, Berseneva EN, Lyssenko KA, Kostyanovsky RG. Cyclic hydroxamic acids derived from α-amino acids 1. Regioselective synthesis, structure, NO-donor and antimetastatic activities of spirobicyclic hydroxamic acids derived from glycine and DL-alanine. Russ Chem Bull 2010. [DOI: 10.1007/s11172-010-0055-x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
|
103
|
Villamena FA. Superoxide radical anion adduct of 5,5-dimethyl-1-pyrroline N-oxide. 6. Redox properties. J Phys Chem A 2010; 114:1153-60. [PMID: 19968309 DOI: 10.1021/jp909614u] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Cyclic nitrones have been employed for decades as spin trapping reagents for the detection and identification of transient radicals, and have been employed as pharmacological agent against ROS-mediated toxicity. The short half-life of the nitrone-superoxide adducts limits the application of nitrones in biological millieu, and therefore investigaton of the redox properties of the superoxide adducts is important. Moreover, computational investigation of the redox properties of the nitrones and their corresponding spin adducts may provide new insights into the nature of their pharmacological activity against ROS-induced toxicity. In general, electron-withdrawing group substitution at the C-5 position results in higher EAs and IPs making these substituted nitrones more susceptible to reduction but more difficult to oxidize compared to DMPO. One-electron reduction and oxidation of nitrones both resulted in elongated N-C(2) bonds indicating the tendency of radical anion and cation forms of nitrone to undergo ring-opening. The EAs and IPs of various O(2)(*-) adducts indicate that DEPMPO-O(2)H is the most difficult to reduce and oxidize compared to the O(2)(*-) adducts of DMPO, EMPO, and AMPO. In general, nitroxides gave higher EAs compared to nitrones making them more suceptible to reduction. One-electron oxidation of nitroxides leads to elongation of the N-C(2) bond but not for their reduction. The energetics of redox reaction of O(2)(*-) adducts was also explored. Results indicate that the reduction of O(2)(*-) adducts with O(2)(*-) is preferred followed by their oxidation by O(2) and then by O(2)(*-), but the maximum difference between these free energies of redox reactions in aqueous solution is only 0.21 kcal/mol. The preferred decomposition pathways for the one-electron oxidation and reduction of nitroxides was also explored, and formation of potentially biologically active products such as NO, H(2)O(2), and hydroxamic acid was predicted.
Collapse
Affiliation(s)
- Frederick A Villamena
- Department of Pharmacology and Center for Biomedical EPR Spectroscopy and Imaging, The Davis Heart and Lung Research Institute, The Ohio State University, Columbus, Ohio 43210, USA.
| |
Collapse
|
104
|
Sharma N, Kumari M, Kumar V, Chaudhry S. Synthesis, structural characterisation and antibacterial activity of bis(1-phenyl-1,3-butanedionato)non-oxovanadium(IV) hydroxamates. J Enzyme Inhib Med Chem 2010; 25:708-14. [DOI: 10.3109/14756360903540292] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- Neeraj Sharma
- Department of Chemistry, Himachal Pradesh University, Summer Hill, Shimla 171005, India
| | - Meena Kumari
- Department of Chemistry, Himachal Pradesh University, Summer Hill, Shimla 171005, India
| | - Vijay Kumar
- Department of Chemistry, Himachal Pradesh University, Summer Hill, Shimla 171005, India
| | - S.C. Chaudhry
- Department of Chemistry, Himachal Pradesh University, Summer Hill, Shimla 171005, India
| |
Collapse
|
105
|
Vystorop IV, Nelyubina YV, Voznesensky VN, Sun WH, Lodygina VP, Lyssenko KA, Kostyanovsky RG. General regioselective synthesis and crystal structure of racemic 5-substituted 2,2-dimethyl-3-hydroxyimidazolidin-4-ones. MENDELEEV COMMUNICATIONS 2010. [DOI: 10.1016/j.mencom.2010.03.014] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
|
106
|
Usachova N, Leitis G, Jirgensons A, Kalvinsh I. Synthesis of Hydroxamic Acids by Activation of Carboxylic Acids withN,N′-Carbonyldiimidazole: Exploring the Efficiency of the Method. SYNTHETIC COMMUN 2010. [DOI: 10.1080/00397910903026723] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
|
107
|
Kou HZ, An GY, Ji CM, Wang BW, Cui AL. Ferromagnetic coupling in oximato-bridged multi-decker NiII clusters. Dalton Trans 2010; 39:9604-10. [DOI: 10.1039/c0dt00528b] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
108
|
Flipo M, Charton J, Hocine A, Dassonneville S, Deprez B, Deprez-Poulain R. Hydroxamates: relationships between structure and plasma stability. J Med Chem 2009; 52:6790-802. [PMID: 19821586 DOI: 10.1021/jm900648x] [Citation(s) in RCA: 86] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Hydroxamates are valuable tools for chemical biology as well as interesting leads for medicinal chemistry. Although many hydroxamates display nanomolar activities against metalloproteases, only three hydroxamates have reached the market, among which is the HDAC inhibitor vorinostat. Failures in development are generally attributed to lack of selectivity, toxicity, or poor stability. To help medicinal chemists with respect to plasma stability, we have performed the first and preliminary study on structure-plasma stability for hydroxamates. We define some structural rules to predict or improve the plasma stability in the preclinical stage.
Collapse
Affiliation(s)
- Marion Flipo
- INSERM U761 Biostructures and Drug Discovery, Univ Lille Nord de France, Lille F-59006, France
| | | | | | | | | | | |
Collapse
|
109
|
The Interaction of Zinc(II) and Hydroxamic Acids and a Metal-Triggered Lossen Rearrangement. Chemistry 2009; 15:13399-405. [DOI: 10.1002/chem.200901645] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
|
110
|
Tavakol H. Computational study of simple and water-assisted tautomerism of hydroxamic acids. ACTA ACUST UNITED AC 2009. [DOI: 10.1016/j.theochem.2009.09.032] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
|
111
|
Heckmann D, Laufer B, Marinelli L, Limongelli V, Novellino E, Zahn G, Stragies R, Kessler H. Breaking the dogma of the metal-coordinating carboxylate group in integrin ligands: introducing hydroxamic acids to the MIDAS to tune potency and selectivity. Angew Chem Int Ed Engl 2009; 48:4436-40. [PMID: 19343753 DOI: 10.1002/anie.200900206] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
A suitable substitute: All integrin receptors bind their ligands, which contain an aspartate residue, in the metal-ion- dependent adhesion site (MIDAS). So far all attempts to replace the carboxyl group of aspartate with other, pharmacologically favorable isosteric groups have failed. Now it has been shown that a hydroxamic acid group can replace the carboxyl group; the resulting ligand retains its high binding activity. The picture shows one such ligand in the binding site of alphavbeta3.
Collapse
Affiliation(s)
- Dominik Heckmann
- Institute for Advanced Study, TU München, Department Chemie, Lichtenbergstrasse 4, 85747 Garching, Germany
| | | | | | | | | | | | | | | |
Collapse
|
112
|
Hoffman HE, Jirásková J, Cígler P, Šanda M, Schraml J, Konvalinka J. Hydroxamic Acids As a Novel Family of Serine Racemase Inhibitors: Mechanistic Analysis Reveals Different Modes of Interaction with the Pyridoxal-5′-phosphate Cofactor. J Med Chem 2009; 52:6032-41. [DOI: 10.1021/jm900775q] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Hillary E. Hoffman
- Gilead Sciences and IOCB Research Center, Institute of Organic Chemistry and Biochemistry of the ASCR, v. v. i., Flemingovo n. 2, 166 10 Prague 6, Czech Republic
- Department of Biochemistry, Faculty of Science, Charles University, Hlavova 8, Prague 2, Czech Republic
| | - Jana Jirásková
- Gilead Sciences and IOCB Research Center, Institute of Organic Chemistry and Biochemistry of the ASCR, v. v. i., Flemingovo n. 2, 166 10 Prague 6, Czech Republic
- Department of Biochemistry, Faculty of Science, Charles University, Hlavova 8, Prague 2, Czech Republic
| | - Petr Cígler
- Gilead Sciences and IOCB Research Center, Institute of Organic Chemistry and Biochemistry of the ASCR, v. v. i., Flemingovo n. 2, 166 10 Prague 6, Czech Republic
| | - Miloslav Šanda
- Gilead Sciences and IOCB Research Center, Institute of Organic Chemistry and Biochemistry of the ASCR, v. v. i., Flemingovo n. 2, 166 10 Prague 6, Czech Republic
| | - Jan Schraml
- Institute of Chemical Process Fundamentals of the ASCR, v. v. i., Rozvojová 135, 165 02 Prague 6, Czech Republic
| | - Jan Konvalinka
- Gilead Sciences and IOCB Research Center, Institute of Organic Chemistry and Biochemistry of the ASCR, v. v. i., Flemingovo n. 2, 166 10 Prague 6, Czech Republic
- Department of Biochemistry, Faculty of Science, Charles University, Hlavova 8, Prague 2, Czech Republic
| |
Collapse
|
113
|
Sharma N, Kumari M, Kumar V, Chaudhry S, Kanwar S. Synthesis, characterization, and antibacterial activity of vanadium(IV) complexes of hydroxamic acids. J COORD CHEM 2009. [DOI: 10.1080/00958970903247712] [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)
- Neeraj Sharma
- a Department of Chemistry , Himachal Pradesh University , Summer Hill , Shimla 171005 , India
| | - Meena Kumari
- a Department of Chemistry , Himachal Pradesh University , Summer Hill , Shimla 171005 , India
| | - Vijay Kumar
- a Department of Chemistry , Himachal Pradesh University , Summer Hill , Shimla 171005 , India
| | - S.C. Chaudhry
- a Department of Chemistry , Himachal Pradesh University , Summer Hill , Shimla 171005 , India
| | - S.S. Kanwar
- b Department of Biotechnology , Himachal Pradesh University , Summer Hill , Shimla 171005 , India
| |
Collapse
|
114
|
Dissanayake DP, Senthilnithy R. Thermodynamic cycle for the calculation of ab initio pKa values for hydroxamic acids. ACTA ACUST UNITED AC 2009. [DOI: 10.1016/j.theochem.2009.06.021] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
|
115
|
Sen’ VD, Shilov GV, Golubev VA. Synthesis and structure of products of hydroxylamine acylation with 3-carboxy-2,2,5,5-tetramethylpyrrolinoxyl derivatives. RUSSIAN JOURNAL OF ORGANIC CHEMISTRY 2009. [DOI: 10.1134/s1070428009080132] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
|
116
|
Bruch mit dem Dogma metallkoordinierender Carbonsäuren in Integrinliganden: Änderung von Selektivität und Aktivität durch Hydroxamsäuren als MIDAS-Binder. Angew Chem Int Ed Engl 2009. [DOI: 10.1002/ange.200900206] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
|
117
|
Kurz T, Pein MK, Marek L, Behrendt CT, Spanier L, Kuna K, Brücher K. Microwave-Assisted Conversion of 4-Nitrophenyl Esters intoO-Protected Hydroxamic Acids. European J Org Chem 2009. [DOI: 10.1002/ejoc.200900201] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
|
118
|
Metal-binding ability of histidine-containing peptidehydroxamic acids: Imidazole versus hydroxamate coordination. Inorganica Chim Acta 2009. [DOI: 10.1016/j.ica.2008.04.001] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
|
119
|
Griffith D, Morgan MP, Marmion CJ. A novel anti-cancer bifunctional platinum drug candidate with dual DNA binding and histone deacetylase inhibitory activity. Chem Commun (Camb) 2009:6735-7. [DOI: 10.1039/b916715c] [Citation(s) in RCA: 94] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
120
|
Buglyó P, Farkas E. Novel half-sandwich Ru(II)-hydroxamate complexes: synthesis, characterization and equilibrium study in aqueous solution. Dalton Trans 2009:8063-70. [DOI: 10.1039/b908173a] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
121
|
McGinley J, McKee V, Toftlund H, Walsh JMD. Unusual metal coordination chemistry from an amino-amide derivative of 4-nitrophenol, a surprising ligand. Dalton Trans 2009:8406-12. [DOI: 10.1039/b905226g] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
122
|
Rio-Echevarria IM, White FJ, Brechin EK, Tasker PA, Harris SG. Surface binding vs. sequestration; the uptake of benzohydroxamic acid at iron(iii) oxide surfaces. Chem Commun (Camb) 2008:4570-2. [PMID: 18815686 DOI: 10.1039/b808805e] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Benzohydroxamic acid is shown to be an unexpectedly good ligand for iron(iii) oxides, favouring surface attachment to the formation of trisbenzohydroxamato complexes, which are known to have very high thermodynamic stability in solution.
Collapse
|
123
|
Sen’ VD, Shilov GV, Golubev VA. Synthesis and structure of 3-(hydroxycarbamoyl)-2,2,5,5-tetramethyl-2,5-dihydropyrrol-1-oxyl. RUSSIAN JOURNAL OF ORGANIC CHEMISTRY 2008. [DOI: 10.1134/s1070428008080125] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
|
124
|
|
125
|
Conformational analysis of N-isopropylbenzohydroxamic acids: crystal structure, DFT, and NMR studies. Struct Chem 2008. [DOI: 10.1007/s11224-008-9338-3] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
|
126
|
Senthilnithy R, Weerasinghe S, Dissanayake D. Stability of hydroxamate ions in aqueous medium. ACTA ACUST UNITED AC 2008. [DOI: 10.1016/j.theochem.2007.11.002] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
|
127
|
Griffith D, Chopra A, Müller-Bunz H, Marmion CJ. The reduction of platinum(IV) and palladium(IV) ions by 2,6-pyridinedihydroxamic acid. Dalton Trans 2008:6933-9. [DOI: 10.1039/b809584a] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
128
|
Kenawy ER, Abdel-Hay F, El-Newehy M, Ottenbrite RM. Effect of pH on the drug release rate from a new polymer–drug conjugate system. POLYM INT 2008. [DOI: 10.1002/pi.2316] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
|
129
|
Galardon E, Selkti M, Roussel P, Tomas A, Artaud I. Synthesis and characterization of mononuclear hydroxamato and hydroximato complexes of iron(iii) based on the tris-(2-pyridylmethyl)amine ligand. Dalton Trans 2008:6415-20. [DOI: 10.1039/b808967a] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
130
|
Griffith D, Krot K, Comiskey J, Nolan KB, Marmion CJ. Monohydroxamic acids and bridging dihydroxamic acids as chelators to ruthenium(iii) and as nitric oxide donors: syntheses, speciation studies and nitric oxide releasing investigation. Dalton Trans 2008:137-47. [DOI: 10.1039/b711863e] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
131
|
Griffith D, Bergamo A, Pin S, Vadori M, Müller-Bunz H, Sava G, Marmion CJ. Novel platinum pyridinehydroxamic acid complexes: Synthesis, characterisation, X-ray crystallographic study and nitric oxide related properties. Polyhedron 2007. [DOI: 10.1016/j.poly.2007.03.011] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
|
132
|
Berreau LM. COORDINATION AND BIOINORGANIC CHEMISTRY OF ARYL-APPENDED TRIS(2-PYRIDYLMETHYL)AMINE LIGANDS. COMMENT INORG CHEM 2007. [DOI: 10.1080/02603590701572940] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
|
133
|
Mulcahy C, Krot KA, Griffith DM, Suponitsky KY, Starikova ZA, Marmion CJ. Iron(III) Tris(pyridinehydroxamate)s and Related Nickel(II) and Zinc(II) Complexes: Potential Platforms for the Design of Novel Heterodimetallic Supramolecular Assemblies. Eur J Inorg Chem 2007. [DOI: 10.1002/ejic.200600758] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
|
134
|
Wang WH, Liu WS, Wang YW, Li Y, Zheng LF, Wang DQ. Self-assembly and cytotoxicity study of waterwheel-like dinuclear metal complexes: The first metal complexes appended with multiple free hydroxamic acid groups. J Inorg Biochem 2007; 101:297-304. [PMID: 17125839 DOI: 10.1016/j.jinorgbio.2006.10.002] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2006] [Revised: 10/05/2006] [Accepted: 10/06/2006] [Indexed: 11/21/2022]
Abstract
Two waterwheel-like dinuclear complexes [M(2)(PHA)(4)(H(2)O)(2)] (M = Cu(II) (1), Zn(II) (2); HPHA = phthal-hydroxamic acid) appended with four free hydroxamic acid groups, namely, free hydroxamic acid metal complexes (FHAMCs) have been synthesized and characterized. The crystal structure of complex 1 was determined by single crystal X-ray diffraction, which adopts the paddlewheel motif with four bidentate carboxylate ligands joining two Cu(II) ions. The relative cytotoxicities of compounds 1 and 2 against SMMC-7721 and HO-8910 cell lines are similar and more predominant than HPHA (IC(50): Cu(II)>Zn(II)>>HPHA). The synergic effect of the bound water molecules, multiple free hydroxamic acid groups and dimetal active sites with bridging carboxylate may have significant impacts on their pharmacological activity. As the prototype for a new class of hydroxamic acid derivatives, the self-assembly of FHAMCs presents a promising new strategy in designing multiple hydroxamic acids with remarkable bioactivities.
Collapse
Affiliation(s)
- Wen-Hua Wang
- College of Chemistry and Chemical Engineering, State Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000, People's Republic of China
| | | | | | | | | | | |
Collapse
|
135
|
Leung K. Ab initio molecular dynamics study of the hydration of the formohydroxamate anion. Biophys Chem 2006; 124:222-8. [PMID: 16678963 DOI: 10.1016/j.bpc.2006.04.001] [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] [Received: 01/18/2006] [Revised: 03/29/2006] [Accepted: 04/01/2006] [Indexed: 11/19/2022]
Abstract
We apply ab initio molecular dynamics (AIMD) to study the hydration structures and electronic properties of the formohydroxamate anion in liquid water. We consider the cis- nitrogen-deprotonated, cis- oxygen-deprotonated, and trans- oxygen-deprotonated formohydroxamate tautomers. They form an average of 6.3, 6.9, and 6.0 hydrogen bonds with water molecules, respectively. The predicted pair correlation functions and time dependence of the hydration numbers suggest that water is highly structured around the nominally negatively charged oxime oxygen in O-deprotonated tautomers but significantly less so around the nitrogen atom in the N-deprotonated species. Wannier function analysis suggests that, in the O-deprotonated anions, the negative charge is concentrated on the oxime oxygen, while in the N-deprotonated case, it is partially delocalized between the nitrogen and the adjoining oxime oxygen atom.
Collapse
Affiliation(s)
- Kevin Leung
- Sandia National Laboratories, MS 1415, Albuquerque, NM 87185, United States.
| |
Collapse
|
136
|
Parac-Vogt TN, Pacco A, Nockemann P, Yuan YF, Görller-Walrand C, Binnemans K. Mandelohydroxamic Acid as Ligand for Copper(II) 15-Metallacrown-5 Lanthanide(III) and Copper(II) 15-Metallacrown-5 Uranyl Complexes. Eur J Inorg Chem 2006. [DOI: 10.1002/ejic.200501015] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
|
137
|
Characterization of metal-deferoxamine complexes by continuous variation method: A new approach using capillary zone electrophoresis. Microchem J 2006. [DOI: 10.1016/j.microc.2006.01.018] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
|
138
|
Higgins FS, Magliocco LG, Colthup NB. Infrared and Raman spectroscopy study of alkyl hydroxamic acid and alkyl hydroxamate isomers. APPLIED SPECTROSCOPY 2006; 60:279-87. [PMID: 16608571 DOI: 10.1366/000370206776342517] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/08/2023]
Abstract
The isomeric structures of alkyl hydroxamic acid, as well as its potassium salt, sodium salt, and an alcohol complex, have been characterized in the solid, liquid, and gaseous states by Fourier transform infrared (FT-IR) and FT-Raman spectroscopy. Raman spectroscopy provides insight into the long-standing debate over the isomeric composition of hydroxamates in the solid state and in an aqueous basic solution. IR and Raman results are not consistent with the enol isomer existing in the solid or liquid states of octyl or decyl hydroxamic acid, potassium hydroxamate, and sodium hydroxamate. The infrared and Raman spectra of these compounds provide clear and convincing evidence regarding their chemical structure, mainly from amide-type carbonyl, NH bending, and OH/NH stretching bands. Vibrational spectroscopy is sensitive to polar (FT-IR) and non-polar (FT-Raman) vibrations and the influence of ionic and hydrogen bonding on these vibrations, and these abilities are particularly useful for characterizing keto versus enol and trans versus cis conformations in alkyl hydroxamic acid and its salts. Evolved gas analysis (EGA) in a nitrogen gas environment of alkyl hydroxamic acid and its salts is also discussed. EGA data reveal that water is not incorporated into the solid-state crystal structure of alkyl hydroxamic acid or the potassium salt; however, the sodium salt form is found to have a stable hydrate conformer that is shown to affect the Z isomer (NH trans to carbonyl, OH cis to carbonyl) IR absorbance bands. EGA data also indicates results that could be of interest to bio-pharmaceutical applications involving nitric oxide donation.
Collapse
Affiliation(s)
- Franklin S Higgins
- Cytec Industries Inc., Research and Development, 1937 West Main Street, Stamford, Connecticut 06904, USA.
| | | | | |
Collapse
|
139
|
Density functional study of the properties of isomeric aminophenylhydroxamic acids and their copper (II) complexes. Polyhedron 2006. [DOI: 10.1016/j.poly.2005.07.036] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
|
140
|
Simionato AVC, de Souza GD, Rodrigues-Filho E, Glick J, Vouros P, Carrilho E. Tandem mass spectrometry of coprogen and deferoxamine hydroxamic siderophores. RAPID COMMUNICATIONS IN MASS SPECTROMETRY : RCM 2006; 20:193-9. [PMID: 16345131 DOI: 10.1002/rcm.2295] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/05/2023]
Abstract
Mechanisms of fragmentation of hydroxamic siderophores are proposed comparing deuterated and nondeuterated samples. Standard siderophores (e.g. deferoxamine and coprogen) were directly injected into both ion trap and linear quadrupole mass spectrometers with electrospray ionization (ESI). Four and two fragmentation steps were carried out for deferoxamine and coprogen (analyzed by positive and negative ESI, respectively). Deferoxamine cleavages occurred in both peptide and hydroxamic bonds while the coprogen fragmentation pattern is more elaborate, since it contains Fe(III) in its structure.
Collapse
Affiliation(s)
- Ana V C Simionato
- Laboratório de Cromatografia, Instituto de Química de São Carlos, Universidade de São Paulo, Av. Trabalhador Sãocarlense, 400 São Carlos, SP 13566-590, Brasil
| | | | | | | | | | | |
Collapse
|
141
|
Polleux J, Pinna N, Antonietti M, Niederberger M. Growth and Assembly of Crystalline Tungsten Oxide Nanostructures Assisted by Bioligation. J Am Chem Soc 2005; 127:15595-601. [PMID: 16262425 DOI: 10.1021/ja0544915] [Citation(s) in RCA: 195] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Here, we present a systematic study on the influence of the bioligand deferoxamine mesylate on the crystallization and assembly behavior of tungsten oxide in a soft-chemistry process. Without deferoxamine mesylate, this approach yields pseudo-single crystalline tungstite nanoplatelets consisting of a large number of crystallographically almost perfectly aligned primary crystallites. In the presence of a constant amount of deferoxamine, the particle morphology drastically changes with temperature, ranging from wormlike organic-inorganic hybrid nanostructures to single-crystalline tungsten oxide nanowires, highlighting the role of the bioligand in controlling the crystal growth and assembly behavior. The nanowires have a uniform diameter of about 1.3 nm, an aspect ratio of more than 500, and the structural flexibility of tungsten oxide. The presented process is based on the combination of biomimetic construction principles with nonaqueous sol-gel chemistry, thus combining the advantages of both tools, excellent control over particle morphology and high crystallinity at low temperature.
Collapse
Affiliation(s)
- Julien Polleux
- Max-Planck-Institute of Colloids and Interfaces, Colloid Chemistry, Research Campus Golm, 14424 Potsdam, Germany
| | | | | | | |
Collapse
|
142
|
Griffith D, Lyssenko K, Jensen P, Kruger PE, Marmion CJ. Novel platinum(ii) ammine hydroxamate and hydroximate complexes and the platinum-assisted hydrolysis of hydroxamic acids. Dalton Trans 2005:956-61. [PMID: 15726150 DOI: 10.1039/b417953f] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The 2-pyridinecarboxylate (2-pyca) platinum(IV) complex [2-pycaH2][PtCl4(2-pyca)].H2O, 1, has been synthesised from K2[PtCl4] following the hydrolysis of 2-pyridinehydroxamic acid (2-pyhaH) in the presence of H2O2, and directly from K2[PtCl6] and picolinic acid. Structural characterisation of 1 reveals octahedral geometry about platinum(IV) consisting of a (N,O)-bidentate pyridinecarboxylate ligand and four chloride ligands. A mechanism for the hydrolysis of 2-pyridinehydroxamic acid to 2-pyridinecarboxylic acid is proposed. Two novel coordination modes of hydroxamic acids to platinum(II) are also reported. The dinuclear platinum ammine hydroximato complex, [{cis-Pt(NH3)2}2(mu-2-pyhaH(-1))](ClO4)2.H2O, 3, has been synthesised where the two platinum(II) centres are bridged via(O,O) and (N,N) coordination. The latter coordination mode is via the hydroximate nitrogen and the pyridine nitrogen. The corresponding mononuclear platinum(II) pyridinehydroxamate complex, [cis-Pt(NH3)2(2-pyha)]ClO4, 4, has been synthesised. Spectroscopic studies indicate that the coordination mode is through the pyridine nitrogen and hydroxamate oxygen atoms (N,O).
Collapse
Affiliation(s)
- Darren Griffith
- Centre for Synthesis and Chemical Biology, Department of Pharmaceutical and Medicinal Chemistry, Royal College of Surgeons in Ireland, 123 St. Stephen's Green, Dublin 2, Ireland
| | | | | | | | | |
Collapse
|
143
|
Mulcahy C, Dolgushin FM, Krot KA, Griffith D, Marmion CJ. Synthesis, characterisation and speciation studies of heterobimetallic pyridinehydroxamate-bridged Pt(ii)/M(ii) complexes (M = Cu, Ni, Zn). Crystal structure of a novel heterobimetallic 3-pyridinehydroxamate-bridged Pt(ii)/Cu(ii) wave-like coordination polymer. Dalton Trans 2005:1993-8. [PMID: 15909049 DOI: 10.1039/b501105a] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The reaction of cis-[Pt(NH3)2(3-pyhaH)2]2+ (3-pyhaH = 3-pyridinehydroxamic acid) and cis-[Pt(NH3)2(4-pyhaH)2]2+ (4-pyhaH = 4-pyridinehydroxamic acid) with Cu(II), Ni(II) or Zn(II) in aqueous solution affords novel heterobimetallic pyridinehydroxamate-bridged complexes, {cis-[Pt(NH3)2(mu-3-pyha)M(mu-3-pyha)].SO4.xH2O}n and {cis-[Pt(NH3)2(mu-4-pyha)M(mu-4-pyha)].SO4.xH2O}n respectively. The crystal and molecular structure of one of these, {cis-[Pt(NH3)2(mu-3-pyha)Cu(mu-3-pyha)]SO4.8H2O}n 3a, has been determined and was found to be a novel heterobimetallic wave-like coordination polymer, the structure of which contains interlinked pyridinehydroxamate-bridged repeating units of Pt(II) and Cu(II) ions in slightly distorted square-planar N4 and O4 coordination environments respectively and extensive hydrogen-bonding through the Pt ammines and the deprotonated hydroxamate O and via the O of the SO4(2-) counterions and the H(N) of the hydroxamate moiety. Spectrophotometric and speciation studies on the other heterobimetallic systems confirm that very similar species are being formed in solution and based on elemental analysis and spectroscopic results analogous complexes are formed in the solid-state. In this paper, we report the first examples of coordination polymers incorporating both Pt(II)/Cu(II), Pt(II)/Ni(II) and Pt(II)/Zn(II) and containing pyridinehydroxamic acids as bridging scaffolds.
Collapse
Affiliation(s)
- Clodagh Mulcahy
- Centre for Synthesis & Chemical Biology, Department of Pharmaceutical & Medicinal Chemistry, Royal College of Surgeons in Ireland, 123 St. Stephens Green, Dublin 2, Ireland
| | | | | | | | | |
Collapse
|