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Pati A, Bhattacharyya A, Pujari PK, Pal S, Kundu TK. Investigation of lanthanide complexation with acetohydroxamic acid in nitrate medium: experimental and DFT studies. J CHEM SCI 2021. [DOI: 10.1007/s12039-021-01927-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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2
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A novel method for synthesis of styryl phosphonate monoester and its application in La(III) extraction. J RARE EARTH 2020. [DOI: 10.1016/j.jre.2019.09.003] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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3
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Huang X, Huang K, Jia Y, Wang S, Cao Z, Zhong H. Investigating the selectivity of a xanthate derivative for the flotation separation of chalcopyrite from pyrite. Chem Eng Sci 2019. [DOI: 10.1016/j.ces.2019.04.051] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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4
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Abstract
There is one independent molecule in the asymmetric unit of the title compound (alternatively namedN-hydroxyacetamide), C2H5NO2. It crystallizes in the noncentrosymmetric space groupP43. The structure is an anhydrous form of acetylhydroxamic acid with typical geometry that corresponds well with the hydrated structure described by Bracher & Small [Acta Cryst.(1970), B26, 1705–1709]. In the crystal, N—H...O and O—H...O hydrogen bonds connect the molecules into chains in thec-axis direction.
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Adiguzel E, Yilmaz F, Emirik M, Ozil M. Synthesis and characterization of two new hydroxamic acids derivatives and their metal complexes. An investigation on the keto/enol, E/Z and hydroxamate/hydroximate forms. J Mol Struct 2017. [DOI: 10.1016/j.molstruc.2016.07.081] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
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Brandès S, Sornosa-Ten A, Rousselin Y, Lagrelette M, Stern C, Moncomble A, Cornard JP, Meyer M. Conformational and structural studies of N-methylacetohydroxamic acid and of its mono- and bis-chelated uranium(VI) complexes. J Inorg Biochem 2015; 151:164-75. [PMID: 26116424 DOI: 10.1016/j.jinorgbio.2015.06.002] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2015] [Revised: 05/29/2015] [Accepted: 06/01/2015] [Indexed: 12/18/2022]
Abstract
The thermodynamics and kinetics of the cis/trans isomerism of N-methylacetohydroxamic acid (NMAH) and its conjugated base (NMA(-)) have been reinvestigated in aqueous media by (1)H NMR spectroscopy. Hindered rotation around the central C-N bond due to electronic delocalization becomes slow enough on the NMR time scale to observe both rotamers in equilibrium in D2O at room temperature. By properly assigning the methyl group resonances, evidence for the prevalence of the E over the Z form is unambiguously provided [K300=[E]/[Z]=2.86(2) and 9.63(5) for NMAH and NMA(-), respectively], closing thereby a long-lasting dispute about the most stable conformer. To that end, calculations of the chemical shifts by density functional theory (DFT), which accurately reproduced the experimental data, turned out to be a much more reliable method than the direct computation of the relative energy for each conformer. The Z ⇌ E interconversion dynamics was probed at 300 K in D2O by 2D exchange-correlated spectroscopy (EXSY), affording the associated rate constants [kZE=9.0(2) s(-1) and kEZ=3.14(5) s(-1) for NMAH, kZE=0.96(3) s(-1) and kEZ=0.10(2) s(-1) for NMA(-)] and activation barriers at 300 K [ΔG(≠)ZE=68.0 kJ mol(-1) and ΔG(≠)EZ=70.6 kJ mol(-1) for NMAH, ΔG(≠)ZE=73.6 kJ mol(-1) and ΔG(≠)EZ=79.2 kJ mol(-1) for NMA(-)]. For the first time, mono- and bis-chelated uranium(VI) complexes of NMA(-) have been isolated. Crystals of [UO2(NMA)(NO3)(H2O)2] and [UO2(NMA)2(H2O)] have been characterized by X-ray diffractometry, infrared and Raman spectroscopies.
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Affiliation(s)
- Stéphane Brandès
- Institut de Chimie Moléculaire de l'Université de Bourgogne (ICMUB), UMR 6302, CNRS, Université de Bourgogne Franche-Comté, 9 avenue Alain Savary, BP 47870, 21078 Dijon Cedex, France
| | - Alejandra Sornosa-Ten
- Institut de Chimie Moléculaire de l'Université de Bourgogne (ICMUB), UMR 6302, CNRS, Université de Bourgogne Franche-Comté, 9 avenue Alain Savary, BP 47870, 21078 Dijon Cedex, France
| | - Yoann Rousselin
- Institut de Chimie Moléculaire de l'Université de Bourgogne (ICMUB), UMR 6302, CNRS, Université de Bourgogne Franche-Comté, 9 avenue Alain Savary, BP 47870, 21078 Dijon Cedex, France
| | - Mickael Lagrelette
- Institut de Chimie Moléculaire de l'Université de Bourgogne (ICMUB), UMR 6302, CNRS, Université de Bourgogne Franche-Comté, 9 avenue Alain Savary, BP 47870, 21078 Dijon Cedex, France
| | - Christine Stern
- Institut de Chimie Moléculaire de l'Université de Bourgogne (ICMUB), UMR 6302, CNRS, Université de Bourgogne Franche-Comté, 9 avenue Alain Savary, BP 47870, 21078 Dijon Cedex, France
| | - Aurélien Moncomble
- Laboratoire de Spectrochimie Infrarouge et Raman (LASIR), UMR 8516, CNRS, Université de Lille - Sciences et Technologies, 59655 Villeneuve d'Ascq Cedex, France
| | - Jean-Paul Cornard
- Laboratoire de Spectrochimie Infrarouge et Raman (LASIR), UMR 8516, CNRS, Université de Lille - Sciences et Technologies, 59655 Villeneuve d'Ascq Cedex, France
| | - Michel Meyer
- Institut de Chimie Moléculaire de l'Université de Bourgogne (ICMUB), UMR 6302, CNRS, Université de Bourgogne Franche-Comté, 9 avenue Alain Savary, BP 47870, 21078 Dijon Cedex, France.
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Tolosa S, Mora-Diez N, Hidalgo A, Sansón JA. Amide-imide tautomerism of acetohydroxamic acid in aqueous solution: quantum calculation and SMD simulations. RSC Adv 2014. [DOI: 10.1039/c4ra06124a] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
Abstract
The kinetics and the thermodynamics of the amide-imide tautomerizations of acetohydroxamic acid in aqueous solution are studied from a theoretical point of view.
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Affiliation(s)
- S. Tolosa
- Departamento de Ingeniería Química y Química Física
- Universidad de Extremadura
- Badajoz, Spain
| | - N. Mora-Diez
- Department of Chemistry
- Thompson Rivers University
- Kamloops, Canada
| | - A. Hidalgo
- Departamento de Ingeniería Química y Química Física
- Universidad de Extremadura
- Badajoz, Spain
| | - J. A. Sansón
- Departamento de Ingeniería Química y Química Física
- Universidad de Extremadura
- Badajoz, Spain
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Crapster JA, Stringer JR, Guzei IA, Blackwell HE. Design and conformational analysis of peptoids containing N-hydroxy amides reveals a unique sheet-like secondary structure. Biopolymers 2011; 96:604-16. [PMID: 22180908 PMCID: PMC3448284 DOI: 10.1002/bip.21599] [Citation(s) in RCA: 44] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
N-hydroxy amides can be found in many naturally occurring and synthetic compounds and are known to act as both strong proton donors and chelators of metal cations. We have initiated studies of peptoids, or N-substituted glycines which contain N-hydroxy amide side chains to investigate the potential effects of these functional groups on peptoid backbone amide rotamer equilibria and local conformations. We reasoned that the propensity of these functional groups to participate in hydrogen bonding could be exploited to enforce intramolecular or intermolecular interactions that yield new peptoid structures. Here, we report the design, synthesis, and detailed conformational analysis of a series of model N-hydroxy peptoids. These peptoids were readily synthesized, and their structures were analyzed in solution by 1D and 2D NMR and in the solid-state by X-ray crystallography. The N-hydroxy amides were found to strongly favor trans conformations with respect to the peptoid backbone in chloroform. More notably, unique sheet-like structures held together via intermolecular hydrogen bonds were observed in the X-ray crystal structures of an N-hydroxy amide peptoid dimer, which to our knowledge represent the first structure of this type reported for peptoids. These results suggest that the N-hydroxy amide can be utilized to control both local backbone geometries and longer-range intermolecular interactions in peptoids, and represents a new functional group in the peptoid design toolbox.
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Affiliation(s)
- J. Aaron Crapster
- Department of Chemistry, University of Wisconsin–Madison, 1101 University Avenue, Madison, Wisconsin 53706-1322
| | - Joseph R. Stringer
- Department of Chemistry, University of Wisconsin–Madison, 1101 University Avenue, Madison, Wisconsin 53706-1322
| | - Ilia A. Guzei
- Department of Chemistry, University of Wisconsin–Madison, 1101 University Avenue, Madison, Wisconsin 53706-1322
| | - Helen E. Blackwell
- Department of Chemistry, University of Wisconsin–Madison, 1101 University Avenue, Madison, Wisconsin 53706-1322
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Dzyuba VI, Koval LI, Bon VV, Pekhnyo VI. Synthesis and structure of lipophilic dioxo-molybdenum (VI) bis(hydroxamato) complexes. Polyhedron 2010. [DOI: 10.1016/j.poly.2010.07.014] [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]
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10
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Sałdyka M. Isomerical and structural determination of N-hydroxyurea: a matrix isolation and theoretical study. Phys Chem Chem Phys 2010; 12:15111-8. [DOI: 10.1039/c0cp00709a] [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]
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11
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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]
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12
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Nuti E, Panelli L, Casalini F, Avramova SI, Orlandini E, Santamaria S, Nencetti S, Tuccinardi T, Martinelli A, Cercignani G, D'Amelio N, Maiocchi A, Uggeri F, Rossello A. Design, synthesis, biological evaluation, and NMR studies of a new series of arylsulfones as selective and potent matrix metalloproteinase-12 inhibitors. J Med Chem 2009; 52:6347-61. [PMID: 19775099 DOI: 10.1021/jm900335a] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Overexpression of macrophage elastase (MMP-12), a member of the matrix metalloproteinases family, can be linked to tissue remodeling and degradation in some inflammatory processes, such as chronic obstructive pulmonary disease (COPD), emphysema, rheumatoid arthritis (RA), and atherosclerosis. On this basis, MMP-12 can be considered an attractive target for studying selective inhibitors that are useful in the development of new therapies for COPD and other inflammatory diseases. We report herein the design, synthesis, and in vitro evaluation of a new series of compounds, possessing an arylsulfonyl scaffold, for their potential as selective inhibitors of MMP-12. The best compound in the series showed an IC50 value of 0.2 nM, with good selectivity over MMP-1 and MMP-14. A docking study was carried out on this compound in order to investigate its binding interactions with MMP-12, and NMR studies on the complex with the MMP-12 catalytic domain were able to validate the proposed binding mode.
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Affiliation(s)
- Elisa Nuti
- Dipartimento di Scienze Farmaceutiche, Università di Pisa, via Bonanno 6, 56126 Pisa, Italy
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Gong CMS, Poineau F, Czerwinski KR. Synthesis and characterization of the solid uranium(VI) dioxo-diacetohydroxamate complex. RADIOCHIM ACTA 2009. [DOI: 10.1524/ract.2007.95.8.439] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
A novel dry synthesis for the uranium(VI) dioxo-diacetohydroxamate (UAHA) complex has been developed. The complex was generated in >80% yield by mechanically grinding solid uranyl acetate dihydrate (UAc) with solid acetohydroxamic acid in stoichiometric amounts. The resulting UO2(AHA)2·4H2O solid is purified by washing with acetone. The stoichiometry was confirmedviacolorimetric assays for U(VI) and AHA. The analogous ferric trisacetohydroxamate complex (FeAHA) was synthesized for comparison. A novel dry synthesis for the uranium(VI) dioxo-diacetohydroxamate (UAHA) complex has been developed. The complex was generated in >80% yield by mechanically grinding solid uranyl acetate dihydrate (UAc) with solid acetohydroxamic acid in stoichiometric amounts. The resulting UO2(AHA)2·4H2O solid is purified by washing with acetone. The stoichiometry was confirmedviacolorimetric assays for U(VI) and AHA. The analogous ferric trisacetohydroxamate complex (FeAHA) was synthesized for comparison.The UAHA solid was extensively characterized by ultraviolet-visible (UV-vis), Fourier-transform infrared (FT-IR), and extended X-ray absorption fine structure (EXAFS) spectroscopies. The compound did not fluoresce after laser excitation. Proton nuclear magnetic resonance (NMR) spectra were obtained of the complex in D2O, acidified acetonitrile-d3, and DMSO-d6. The solubility was determined over a range of solvents. It was determined that in the purified solid, two bidentate AHA molecules bind to uranylviathe carbonyl and hydroxamate oxygen atoms, a structure analogous to known ferric, nickel, and lanthanum AHA complexes. In an acidic environment, binding is monodentate through the hydroxamate oxygen. And in aqueous solution, the UAHA complex assumes both binding moieties, depending on the pH. This pH-dependent speciation change is demonstrated for the first time.The easy synthesis and purification of UAHA enables researchers to strictly control reaction conditions; to eliminate interfering salts and water; and to study the complex in the solid-phase.
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Theoretical calculations of hypersurfaces of the 13C chemical shift anisotropy in the CO⋯HN hydrogen bond and the benefit for the ab initio structure determination. ACTA ACUST UNITED AC 2007. [DOI: 10.1016/j.theochem.2007.08.029] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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Synthesis and pharmacological activity of benzofurylhydroxyureas and benzofurylhydroxamic acids. Pharm Chem J 2006. [DOI: 10.1007/s11094-006-0186-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Kaczor A, Proniewicz LM. Molecular structure of 2-(hydroxyimino)propanohydroxamic acid in solid state and DMSO solution. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2005; 62:1023-31. [PMID: 16297658 DOI: 10.1016/j.saa.2005.04.024] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/21/2004] [Accepted: 04/07/2005] [Indexed: 05/05/2023]
Abstract
The 1H and 13C NMR spectra of 2-(hydroxyimino)propanohydroxamic acid (hpha) were measured in DMSO-d6 solution. The set of several monomeric structures along with the cluster of H-bonded hpha with three DMSO molecules were proposed to fit the experimental data. The calculated chemical shifts [B3LYP/6-311++G(d,p)] strongly suggested the formation of the cluster in which all the labile protons were H-bonded to the solvent molecules. The comparison between experimental and calculated Raman spectra of hpha in DMSO also suggested that in these conditions the investigated compound forms the proposed cluster rather than dimers. According to our calculations [B3LYP/6-31+G(d)] this cluster was energetically stabilized (84-106 kJ mol-1) compared to postulated dimeric structures. On the other hand, formation of dimers was proposed to be present for hpha in solid state. The comparison of the vibrational data (IR, RS) with the computed harmonic frequencies of three most probable dimers [B3LYP/6-31+G(d)] suggested that the dimer in which molecules adopted the zEe-keto form and were linked by two symmetric, almost linear H-bonds between the carbonyl oxygen atoms and the hydroxamic O-H protons was the predominant species of hpha in the solid state. Thus, the structures of hpha in solid state and DMSO solution appeared to be different.
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Affiliation(s)
- Agnieszka Kaczor
- Faculty of Chemistry, Jagiellonian University, ul. Ingardena 3, 30-060 Krakow, Poland
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