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Muzulu J, Basu A. Detection of ligand binding to glycopolymers using saturation transfer difference NMR. Phys Chem Chem Phys 2021; 23:21934-21940. [PMID: 34568885 DOI: 10.1039/d1cp03410c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We report the use of saturation transfer difference (STD) NMR spectroscopy to observe the interaction of various phenylboronic acids (PBAs) with synthetic glycopolymers presenting galactose and glucose. After optimizing experimental parameters to maximize spin diffusion within the glycopolymers, STD NMR experiments were successfully used to detect binding of PBAs to the polymers. Amplification factor build-up curves in conjunction with differential epitope mapping experiments were used to generate an epitope map for the bound boronic acids. STD NMR was also used to detect the interaction between indole and a galactosylated glycopolymer, providing an indole-based view of this CH-π interaction, a common binding motif in carbohydrate recognition.
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Affiliation(s)
- Janet Muzulu
- Department of Chemistry, Brown University, Providence RI, 02912, USA.
| | - Amit Basu
- Department of Chemistry, Brown University, Providence RI, 02912, USA.
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2
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Vargas-Caporali J, Juaristi E. Fundamental Developments of Chiral Phase Chromatography in Connection with Enantioselective Synthesis of β-Amino Acids. Isr J Chem 2017. [DOI: 10.1002/ijch.201700011] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Affiliation(s)
- Jorge Vargas-Caporali
- Departamento de Química; Centro de Investigación y de Estudios Avanzados, Instituto Politécnico Nacional Avenida IPN No. 2508; 07360 Ciudad de México México
| | - Eusebio Juaristi
- Departamento de Química; Centro de Investigación y de Estudios Avanzados, Instituto Politécnico Nacional Avenida IPN No. 2508; 07360 Ciudad de México México
- El Colegio Nacional; Luis González Obregón No. 23, Centro Histórico 06020 Ciudad de México México
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3
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Al‐Massaedh “AA, Schmidt M, Pyell U, Reinscheid UM. Elucidation of the Enantiodiscrimination Properties of a Nonracemic Chiral Alignment Medium through Gel-based Capillary Electrochromatography: Separation of the Mefloquine Stereoisomers. ChemistryOpen 2016; 5:455-459. [PMID: 27777838 PMCID: PMC5062011 DOI: 10.1002/open.201600085] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2016] [Indexed: 11/07/2022] Open
Abstract
Enantiodiscrimination and enantioseparation are two highly important processes in chemistry, often performed by using NMR spectroscopy and chromatography. For a better understanding of the mechanistic details, the same system should be studied by both methods. In addition, isotropic and anisotropic NMR parameters should be obtained, the latter using alignment media so that residual dipolar couplings and chemical-shift anisotropies can be measured. Consequently, a chiral alignment medium was used for the first time in chiral gel-based capillary electrochromatography with the four stereoisomers of the antimalaria drug mefloquine as test compounds. Chromatographic data verify that enantiodiscrimination obtained with this alignment gel is caused by differences in the equilibrium constants related to associate formation. Hence, the chromatographic separation provides physicochemical data that form a basis for the understanding and optimization of alignment processes, and vice versa.
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Affiliation(s)
- “Ayat Allah” Al‐Massaedh
- Department of ChemistryUniversity of MarburgHans-Meerwein-Straße35032MarburgGermany
- Department of ChemistryFaculty of ScienceAl al-Bayt University25113MafraqJordan
| | - Manuel Schmidt
- Department of NMR-based Structural BiologyMax-Planck-Institute for Biophysical ChemistryAm Fassberg 1137077GöttingenGermany
| | - Ute Pyell
- Department of ChemistryUniversity of MarburgHans-Meerwein-Straße35032MarburgGermany
| | - Uwe M. Reinscheid
- Department of NMR-based Structural BiologyMax-Planck-Institute for Biophysical ChemistryAm Fassberg 1137077GöttingenGermany
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4
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Barreiro JC, Paixão MW, Lourenço TC, Cass QB, Venâncio T. A High-Resolution Magic Angle Spinning NMR Study of the Enantiodiscrimination of 3,4-Methylenedioxymethamphetamine (MDMA) by an Immobilized Polysaccharide-Based Chiral Phase. PLoS One 2016; 11:e0162892. [PMID: 27668862 PMCID: PMC5036802 DOI: 10.1371/journal.pone.0162892] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2015] [Accepted: 08/30/2016] [Indexed: 11/18/2022] Open
Abstract
This paper reports the investigation of the chiral interaction between 3,4-methylenedioxy-methamphetamine (MDMA) enantiomers and an immobilized polysaccharide-based chiral phase. For that, suspended-state high-resolution magic angle spinning nuclear magnetic resonance spectroscopy (1H HR-MAS NMR) was used. 1H HR-MAS longitudinal relaxation time and Saturation Transfer Difference (STD NMR) titration experiments were carried out yielding information at the molecular level of the transient diastereoisomeric complexes of MDMA enantiomers and the chiral stationary phase. The interaction of the enantiomers takes place through the aromatic moiety of MDMA and the aromatic group of the chiral selector by π-π stacking for both enantiomers; however, a stronger interaction was observed for the (R)-enantiomer, which is the second one to elute at the chromatographic conditions.
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Affiliation(s)
- Juliana C. Barreiro
- Department of Chemistry, Federal University of São Carlos, São Paulo, Brazil
- * E-mail:
| | - Márcio W. Paixão
- Department of Chemistry, Federal University of São Carlos, São Paulo, Brazil
| | | | - Quezia B. Cass
- Department of Chemistry, Federal University of São Carlos, São Paulo, Brazil
| | - Tiago Venâncio
- Department of Chemistry, Federal University of São Carlos, São Paulo, Brazil
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Elwinger F, Furó I. High-resolution magic angle spinning (1) H NMR measurement of ligand concentration in solvent-saturated chromatographic beads. MAGNETIC RESONANCE IN CHEMISTRY : MRC 2016; 54:291-297. [PMID: 26791865 PMCID: PMC4819705 DOI: 10.1002/mrc.4370] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/29/2015] [Revised: 08/26/2015] [Accepted: 09/19/2015] [Indexed: 06/05/2023]
Abstract
A method based on (1) H high-resolution magic angle spinning NMR has been developed for measuring concentration accurately in heterogeneous materials like that of ligands in chromatography media. Ligand concentration is obtained by relating the peak integrals for a butyl ligand in the spectrum of a water-saturated chromatography medium to the integral of the added internal reference. The method is fast, with capacity of 10 min total sample preparation and analysis time per sample; precise, with a reproducibility expressed as 1.7% relative standard deviation; and accurate, as indicated by the excellent agreement of derived concentration with that obtained previously by (13) C single-pulse excitation MAS NMR. The effects of radiofrequency field inhomogeneity, spin rate, temperature increase due to spinning, and distribution and re-distribution of medium and reference solvent both inside the rotor during spinning and between bulk solvent and pore space are discussed in detail. © 2016 The Authors Magnetic Resonance in Chemistry published by John Wiley & Sons Ltd.
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Affiliation(s)
- Fredrik Elwinger
- Division of Applied Physical ChemistryKTH Royal Institute of TechnologyStockholmSweden
- GE Healthcare Bio‐Sciences ABUppsalaSweden
| | - István Furó
- Division of Applied Physical ChemistryKTH Royal Institute of TechnologyStockholmSweden
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6
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Elwinger F, Dvinskikh SV, Furó I. ¹³C SPE MAS measurement of ligand concentration in compressible chromatographic beads. MAGNETIC RESONANCE IN CHEMISTRY : MRC 2015; 53:572-7. [PMID: 26053054 PMCID: PMC4832835 DOI: 10.1002/mrc.4257] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/09/2015] [Revised: 03/26/2015] [Accepted: 04/06/2015] [Indexed: 06/04/2023]
Abstract
A method for measuring the ligand concentration in heterogeneous materials like chromatography media is described. In this method, (13)C single pulse excitation magic angle spinning NMR experiment with broadband (1)H decoupling is used to determine the peak integrals for a butyl ligand in the spectrum of a dried chromatography medium. Within a carefully controlled protocol, those integrals compared with that of the internal reference compound dimethyl sulfone provide the required volume concentration with an accuracy of ca 2%. The effects of temperature, degree of hydration, and other experimental parameters are discussed.
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Affiliation(s)
- Fredrik Elwinger
- KTH Royal Institute of TechnologyDivision of Applied Physical ChemistryTeknikringen 36SE‐10044StockholmSweden
- GE Healthcare Bio‐Sciences ABBjörkgatan 31SE‐75184UppsalaSweden
| | - Sergey V. Dvinskikh
- KTH Royal Institute of TechnologyDivision of Applied Physical ChemistryTeknikringen 36SE‐10044StockholmSweden
| | - István Furó
- KTH Royal Institute of TechnologyDivision of Applied Physical ChemistryTeknikringen 36SE‐10044StockholmSweden
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Barreiro JC, de Campos Lourenço T, Silva LMA, Venâncio T, Cass QB. High resolution magic angle spinning NMR as a tool for unveiling the molecular enantiorecognition of omeprazole by amylose-based chiral phase. Analyst 2015; 139:1350-4. [PMID: 24503630 DOI: 10.1039/c3an02029k] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
Polysaccharide-based chiral stationary phases (CSP) demonstrate great versatility and higher chiral selectivity for a variety of chiral compounds in multimodal elution modes (normal, reverse and polar organic). The main role of CSP phenyl carbamate based derivatives as chiral selectors is the formation of diastereoisomeric complexes by means of π-π interaction, dipole-dipole, hydrogen bonding and/or inclusion complex mechanisms. Nevertheless, the mechanism behind their enantioselectivity requires clarification. High resolution magic angle spinning nuclear magnetic resonance spectroscopy ((1)H HR/MAS NMR) has provided key information on the recognition process at the binding sites of the CSP surface. Herein we report the results obtained using omeprazole as a probe for these investigations.
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Henoumont C, Laurent S, Muller RN, Vander Elst L. HR-MAS NMR Spectroscopy: An Innovative Tool for the Characterization of Iron Oxide Nanoparticles Tracers for Molecular Imaging. Anal Chem 2015; 87:1701-10. [DOI: 10.1021/ac5035105] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Céline Henoumont
- Department
of General, Organic and Biomedical Chemistry, NMR and Molecular Imaging
Laboratory, University of Mons, 19 Avenue Maistriau, B-7000 Mons, Belgium
| | - Sophie Laurent
- Department
of General, Organic and Biomedical Chemistry, NMR and Molecular Imaging
Laboratory, University of Mons, 19 Avenue Maistriau, B-7000 Mons, Belgium
| | - Robert N. Muller
- Department
of General, Organic and Biomedical Chemistry, NMR and Molecular Imaging
Laboratory, University of Mons, 19 Avenue Maistriau, B-7000 Mons, Belgium
- Center
for Microscopy
and Molecular Imaging (CMMI), 8 Rue
Adrienne Boland, 6041 Gosselies, Belgium
| | - Luce Vander Elst
- Department
of General, Organic and Biomedical Chemistry, NMR and Molecular Imaging
Laboratory, University of Mons, 19 Avenue Maistriau, B-7000 Mons, Belgium
- Center
for Microscopy
and Molecular Imaging (CMMI), 8 Rue
Adrienne Boland, 6041 Gosselies, Belgium
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Chandran J, Shintu L, Caldarelli S. Molecular signal suppression by in situ microextraction in nuclear magnetic resonance spectroscopy. MAGNETIC RESONANCE IN CHEMISTRY : MRC 2014; 52:694-698. [PMID: 25103092 DOI: 10.1002/mrc.4120] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/25/2014] [Revised: 06/20/2014] [Accepted: 07/08/2014] [Indexed: 06/03/2023]
Abstract
The detailed characterization of complex mixtures by NMR is often hampered by the presence of signals from uninformative compounds, the resonances of which overlap with those of the molecules of interest. We provide here a proof of principle for an approach to NMR signal suppression in complex samples using Molecularly Imprinted Polymers (MIPS). Addition of a few milligrams of polymer to a solution traps the target molecule in typical micromolar to millimolar concentration, thus achieving in situ signal suppression, without altering any other spectral features. This method minimized any manipulation or perturbation of the spectrum and was applied to a complex mixture of known compounds and to a plant extract, in both cases spiked with a compound (bisphenol A), which was subsequently removed by selective binding to a complementary MIP. What is described in this report is comparable with microextraction and may in due course be applied to a large number of analytical challenges.
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Affiliation(s)
- Jima Chandran
- Aix Marseille Université, Centrale Marseille, CNRS, iSm2 UMR 7313, 13397, Marseille, France; Research Group Biosynthesis/NMR Max Planck Institute for Chemical Ecology, Hans-Knöll-Straße 8, D-07745, Jena, Germany
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Garino C, Borfecchia E, Gobetto R, van Bokhoven JA, Lamberti C. Determination of the electronic and structural configuration of coordination compounds by synchrotron-radiation techniques. Coord Chem Rev 2014. [DOI: 10.1016/j.ccr.2014.03.027] [Citation(s) in RCA: 58] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
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High-resolution magic angle spinning description of the interaction states and their kinetics among basic solutes and functionalized silica materials. J Chromatogr A 2013; 1321:48-55. [DOI: 10.1016/j.chroma.2013.10.052] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2013] [Revised: 10/11/2013] [Accepted: 10/15/2013] [Indexed: 11/21/2022]
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12
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Reddy G. N. M, Ballesteros-Garrido R, Lacour J, Caldarelli S. Determination of Labile Chiral Supramolecular Ion Pairs by Chromatographic NMR Spectroscopy. Angew Chem Int Ed Engl 2013. [DOI: 10.1002/ange.201209616] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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13
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Reddy G. N. M, Ballesteros-Garrido R, Lacour J, Caldarelli S. Determination of Labile Chiral Supramolecular Ion Pairs by Chromatographic NMR Spectroscopy. Angew Chem Int Ed Engl 2013; 52:3255-8. [DOI: 10.1002/anie.201209616] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2012] [Indexed: 11/07/2022]
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Yeman H, Nicholson T, Matyska MT, Pesek JJ, Albert K. Simulation of the chromatographic separation process in HPLC employing suspended-state NMR spectroscopy - comparison of interaction behavior for monomeric and hydride-modified C18stationary phases. J Sep Sci 2012. [DOI: 10.1002/jssc.201200729] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Helen Yeman
- Institute of Organic Chemistry; University of Tübingen; Tübingen Germany
| | - Tim Nicholson
- Institute of Organic Chemistry; University of Tübingen; Tübingen Germany
| | - Maria T. Matyska
- Department of Chemistry; San Jose State University; San Jose CA USA
| | - Joseph J. Pesek
- Department of Chemistry; San Jose State University; San Jose CA USA
| | - Klaus Albert
- Institute of Organic Chemistry; University of Tübingen; Tübingen Germany
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15
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Carrara C, Lopez C, Caldarelli S. Chromatographic-nuclear magnetic resonance can provide a prediction of high-pressure liquid chromatography shape selectivity tests. J Chromatogr A 2012; 1257:204-7. [DOI: 10.1016/j.chroma.2012.07.054] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2012] [Revised: 06/09/2012] [Accepted: 07/10/2012] [Indexed: 10/28/2022]
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Abstract
AbstractEnantiomers (stereoisomers) can exhibit substantially different properties if present in chiral environments. Since chirality is a basic property of nature, the different behaviors of the individual enantiomers must be carefully studied and properly treated. Therefore, enantioselective separations are a very important part of separation science. To achieve the separation of enantiomers, an enantioselective environment must be created by the addition of a chiral selector to the separation system. Many chiral selectors have been designed and used in various fields, such as the analyses of drugs, food constituents and agrochemicals. The most popular have become the chiral selectors and/or chiral stationary phases that are of general use, i.e., are applicable in various separation systems and allow for chiral separation of structurally different compounds. This review covers the most important chiral selectors / chiral stationary phases described and applied in high performance liquid chromatography and capillary electrophoresis during the period of the last three years (2008–2011).
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Molecular-level characterization of probucol nanocrystal in water by in situ solid-state NMR spectroscopy. Int J Pharm 2012; 423:571-6. [DOI: 10.1016/j.ijpharm.2011.11.028] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2011] [Revised: 10/24/2011] [Accepted: 11/18/2011] [Indexed: 11/22/2022]
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18
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Cavazzini A, Pasti L, Massi A, Marchetti N, Dondi F. Recent applications in chiral high performance liquid chromatography: A review. Anal Chim Acta 2011; 706:205-22. [DOI: 10.1016/j.aca.2011.08.038] [Citation(s) in RCA: 203] [Impact Index Per Article: 15.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2011] [Revised: 08/08/2011] [Accepted: 08/25/2011] [Indexed: 01/17/2023]
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Posset T, Guenther J, Pope J, Oeser T, Blümel J. Immobilized Sonogashira catalyst systems: new insights by multinuclear HRMAS NMR studies. Chem Commun (Camb) 2011; 47:2059-61. [DOI: 10.1039/c0cc04194g] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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