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Constituents of Chamaecrista diphylla (L.) Greene Leaves with Potent Antioxidant Capacity: A Feature-Based Molecular Network Dereplication Approach. Pharmaceutics 2021; 13:pharmaceutics13050681. [PMID: 34068527 PMCID: PMC8150882 DOI: 10.3390/pharmaceutics13050681] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2021] [Revised: 04/01/2021] [Accepted: 04/06/2021] [Indexed: 01/09/2023] Open
Abstract
Chamaecrista diphylla (L.) Greene (Fabaceae/Caesalpiniaceae) is a herbaceous plant that is widely distributed throughout the Americas. Plants from this genus have been used in traditional medicine as a laxative, to heal wounds, and to treat ulcers, snake and scorpion bites. In the present study, we investigated the chemical composition of Chamaecrista diphylla leaves through a mass spectrometry molecular network approach. The oxygen radical absorbance capacity (ORAC) for the ethanolic extract, enriched fractions and isolated compounds was assessed. Overall, thirty-five compounds were annotated for the first time in C. diphylla. Thirty-two of them were reported for the first time in the genus. The isolated compounds 9, 12, 24 and 33 showed an excellent antioxidant capacity, superior to the extract and enriched fractions. Bond dissociation energy calculations were performed to explain and sustain the antioxidant capacity found. According to our results, the leaves of C. diphylla represent a promising source of potent antioxidant compounds.
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Begala M. Conversion of benzoic acid into phenol in an ITMS under CI-MS n conditions. Recognition of ortho-chlorobenzoyl derivatives. JOURNAL OF MASS SPECTROMETRY : JMS 2018; 53:30-38. [PMID: 28929601 DOI: 10.1002/jms.4031] [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: 07/05/2017] [Revised: 09/01/2017] [Accepted: 09/11/2017] [Indexed: 06/07/2023]
Abstract
Isomeric chlorobenzoyl cations (m/z 139), under collision-induced experiments, fragment identically. Chlorobenzoyl cations can be efficiently converted into cholorophenol radical cations by the reaction with methanol in the ion trap analyzer under CI-MSn conditions. The substitution of the carbonyl group with a hydroxyl moiety is able to induce an ortho effect, which is absent in the startingortho-chlorobenzoyl cation. This transformation could be useful to recognize ortho-chlorinated benzoyl derivatives without the need of MS spectrum comparison of the whole set of isomers. The method reported in this study could be applicable to biologically active molecules that dissociate to form the chlorobenzoyl cations under CI or CI collision-induced dissociation conditions, such as indomethacin, the degradation products from the insect growth regulator 1-(2-chlorobenzoyl)-3-(4-chlorophenyl) urea, and lorazepam.
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Affiliation(s)
- Michela Begala
- Department of Life and Environmental Sciences, Unit of Drug Sciences, University of Cagliari, via Ospedale 72, 09124, Cagliari, Italy
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3
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Lee HHL, Kim HI. Supramolecular Analysis of Monosaccharide Derivatives Using Cucurbit[7]uril and Electrospray Ionization Tandem Mass Spectrometry. Isr J Chem 2017. [DOI: 10.1002/ijch.201700073] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Hyun Hee L. Lee
- Department of Chemistry; Korea University; Seoul 02841 Republic of Korea
| | - Hugh I. Kim
- Department of Chemistry; Korea University; Seoul 02841 Republic of Korea
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4
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Rossich Molina E, Eizaguirre A, Haldys V, Urban D, Doisneau G, Bourdreux Y, Beau J, Salpin J, Spezia R. Characterization of Protonated Model Disaccharides from Tandem Mass Spectrometry and Chemical Dynamics Simulations. Chemphyschem 2017; 18:2812-2823. [DOI: 10.1002/cphc.201700202] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2017] [Revised: 05/09/2017] [Indexed: 11/09/2022]
Affiliation(s)
- Estefania Rossich Molina
- LAMBE, Univ Evry, CEA, CNRSUniversité Paris-Saclay F-91025 Evry France
- LAMBE, Université Cergy-PontoiseUniversité Paris-Seine F-91025 Evry France
| | - Ane Eizaguirre
- LAMBE, Univ Evry, CEA, CNRSUniversité Paris-Saclay F-91025 Evry France
- LAMBE, Université Cergy-PontoiseUniversité Paris-Seine F-91025 Evry France
| | - Violette Haldys
- LAMBE, Univ Evry, CEA, CNRSUniversité Paris-Saclay F-91025 Evry France
- LAMBE, Université Cergy-PontoiseUniversité Paris-Seine F-91025 Evry France
| | - Dominique Urban
- ICMMO—SM2B, Univ Paris-SudUniversité Paris-Saclay and CNRS F-91405 Orsay France
| | - Gilles Doisneau
- ICMMO—SM2B, Univ Paris-SudUniversité Paris-Saclay and CNRS F-91405 Orsay France
| | - Yann Bourdreux
- ICMMO—SM2B, Univ Paris-SudUniversité Paris-Saclay and CNRS F-91405 Orsay France
| | - Jean‐Marie Beau
- ICMMO—SM2B, Univ Paris-SudUniversité Paris-Saclay and CNRS F-91405 Orsay France
| | - Jean‐Yves Salpin
- LAMBE, Univ Evry, CEA, CNRSUniversité Paris-Saclay F-91025 Evry France
- LAMBE, Université Cergy-PontoiseUniversité Paris-Seine F-91025 Evry France
| | - Riccardo Spezia
- LAMBE, Univ Evry, CEA, CNRSUniversité Paris-Saclay F-91025 Evry France
- LAMBE, Université Cergy-PontoiseUniversité Paris-Seine F-91025 Evry France
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Frańska M. Electrospray ionization-collision-induced dissociation-tandem mass spectrometry study of lead complexes with deprotonated nucleobases. EUROPEAN JOURNAL OF MASS SPECTROMETRY (CHICHESTER, ENGLAND) 2016; 22:175-180. [PMID: 27882882 DOI: 10.1255/ejms.1424] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
The complexes between the lead cation and deprotonated nucleobases (and deprotonated nucleosides) are studied by using electrospray ionization-collision-induced dissociation-tandem mass spectrometry. It has been found that the deprotonated N9 atom is not the site of lead cation attachment. In ions [A - H + Pb]+ and [C - H + Pb]+, the lead cation is coordinated by the adenine N1 atom and cytosine N3 atom and interaction between the lead cation and deprotonated amino groups seems very likely. Deprotonated thymine shows a higher affinity toward lead cation than deprotonated uracil. In the lead-nucleoside complexes lead cation interacts with a sugar moiety.
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Affiliation(s)
- Magdalena Frańska
- Institute of Chemistry and Technical Electrochemistry, Poznań University of Technology, Berdychowo 4, 60-965 Poznań, Poland.
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6
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Pearson WL, Contreras C, Powell D, Berden G, Oomens J, Bendiak B, Eyler JR. Differentiation of Rubidiated Methyl-d-Glycoside Stereoisomers by Infrared Multiple-Photon Dissociation Spectroscopy in the O–H and C–H Stretching Regions. J Phys Chem B 2015; 119:12970-81. [DOI: 10.1021/acs.jpcb.5b06563] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Wright L. Pearson
- Department
of Chemistry, University of Florida, Gainesville, Florida 32611-7200, United States
| | - Cesar Contreras
- Department
of Chemistry, University of Florida, Gainesville, Florida 32611-7200, United States
| | - David Powell
- Department
of Chemistry, University of Florida, Gainesville, Florida 32611-7200, United States
| | - Giel Berden
- Radboud University, Institute for Molecules and
Materials, FELIX Laboratory, Toernooiveld 7c, 6525 ED Nijmegen, The Netherlands
| | - Jos Oomens
- Radboud University, Institute for Molecules and
Materials, FELIX Laboratory, Toernooiveld 7c, 6525 ED Nijmegen, The Netherlands
- University of Amsterdam, Science
Park 904, 1098XH Amsterdam, The Netherlands
| | - Brad Bendiak
- Department
of Cell and Developmental Biology and Program in Structural Biology
and Biochemistry, University of Colorado Health Sciences Center, Denver, Colorado 80045, United States
| | - John R. Eyler
- Department
of Chemistry, University of Florida, Gainesville, Florida 32611-7200, United States
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Ortiz D, Enjalbert Q, MacAleese L, Dugourd P, Salpin JY. Effects of calcium complexation on heparin-like disaccharides. A combined theoretical, tandem mass spectrometry and ultraviolet experiment. RAPID COMMUNICATIONS IN MASS SPECTROMETRY : RCM 2015; 29:1135-1144. [PMID: 25981544 DOI: 10.1002/rcm.7204] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/29/2015] [Revised: 03/06/2015] [Accepted: 03/25/2015] [Indexed: 06/04/2023]
Abstract
RATIONALE In order to shed light on the influence of the Ca(2+) metal cation on the structure of heparin-like (Hp) disaccharides, we have explored the gas-phase structures of both [Hp, -2H](2-) and [Ca(Hp), -3H](-) ions by coupling experimental and theoretical methods. METHODS The goal of this work was to (i) provide new evidence of the metal influence on the Hp structure, which can have important biological consequences, and (ii) to study the usefulness of metal complexation for the analytical distinction of Hp isomers. Collision-induced dissociation (CID) and ultraviolet photodissociation (UVPD) fragments, as well as optical spectra recorded in the gas phase for both [Hp, -2H](2-) and [Ca(Hp), -3H](-) complexes were compared for I-H, II-S and III-S isomers of Hp. RESULTS In the case of CID fragmentation, a change in the fragmentation pattern was observed upon calcium complexation, with respect to deprotonated Hp. CONCLUSIONS Remarkably, when optical spectra are compared in the UV range, the metal effect on the carboxylic group absorption can be detected by an unambiguous blue-shift (~20 nm).
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Affiliation(s)
- Daniel Ortiz
- Université d'Evry Val d'Essonne, Laboratoire Analyse et Modélisation pour la Biologie et l'Environnement, Boulevard François Mitterrand, 91025, Evry, France
- CNRS- UMR 8587
| | - Quentin Enjalbert
- Institut Lumière Matière, UMR5306, Université Claude Bernard Lyon1-CNRS, Université de Lyon, 69622, Villeurbanne cedex, France
| | - Luke MacAleese
- Institut Lumière Matière, UMR5306, Université Claude Bernard Lyon1-CNRS, Université de Lyon, 69622, Villeurbanne cedex, France
| | - Philippe Dugourd
- Institut Lumière Matière, UMR5306, Université Claude Bernard Lyon1-CNRS, Université de Lyon, 69622, Villeurbanne cedex, France
| | - Jean-Yves Salpin
- Université d'Evry Val d'Essonne, Laboratoire Analyse et Modélisation pour la Biologie et l'Environnement, Boulevard François Mitterrand, 91025, Evry, France
- CNRS- UMR 8587
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Monosaccharide Identification as a First Step toward de Novo Carbohydrate Sequencing: Mass Spectrometry Strategy for the Identification and Differentiation of Diastereomeric and Enantiomeric Pentose Isomers. Anal Chem 2015; 87:4566-71. [DOI: 10.1021/acs.analchem.5b00760] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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9
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Begala M. Evaluation of the α-phenylvinyl cation as a chemical ionization reagent for the differentiation of isomeric substituted phenols in an ITMS. JOURNAL OF MASS SPECTROMETRY : JMS 2015; 50:693-702. [PMID: 26149114 DOI: 10.1002/jms.3578] [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: 10/11/2014] [Revised: 01/29/2015] [Accepted: 02/08/2015] [Indexed: 06/04/2023]
Abstract
Ion-molecule reactions between the α-phenylvinyl cation and isomeric naturally occurring phenols were investigated using a quadruple ion trap mass spectrometer. The α-phenylvinyl cation m/z 103, generated by chemical ionization from phenylacetylene, reacts with neutral aromatic compounds to form the characteristic species: [M + 103](+) adduct ions and the trans-vinylating product ions [M + 25](+) , which correspond to [M + 103](+) adduct after the loss of benzene. Isomeric differentiation of several ring-substituted phenols was achieved by using collision-induced dissociation of the [M + 103](+) adduct ions. This method also showed to be effective in the differentiation of 4-ethylguaiacol from one of its structural isomers that displays identical EI and EI/MS/MS spectra. The effects of gas-phase alkylation with phenylvinyl cation on the dissociation behavior were examined using mass spectrometry(n) and labeled derivatives. Copyright © 2015 John Wiley & Sons, Ltd.
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Affiliation(s)
- Michela Begala
- Unit of Drug Sciences, Department of Life and Environmental Sciences, University of Cagliari, Via Ospedale 72, 09124, Cagliari, Italy
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10
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Nagy G, Pohl NLB. Complete hexose isomer identification with mass spectrometry. JOURNAL OF THE AMERICAN SOCIETY FOR MASS SPECTROMETRY 2015; 26:677-685. [PMID: 25652933 DOI: 10.1007/s13361-014-1072-z] [Citation(s) in RCA: 49] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/24/2014] [Revised: 12/19/2014] [Accepted: 12/19/2014] [Indexed: 06/04/2023]
Abstract
The first analytical method is presented for the identification and absolute configuration determination of all 24 aldohexose and 2-ketohexose isomers, including the D and L enantiomers for allose, altrose, galactose, glucose, gulose, idose, mannose, talose, fructose, psicose, sorbose, and tagatose. Two unique fixed ligand kinetic method combinations were discovered to create significant enough energetic differences to achieve chiral discrimination among all 24 hexoses. Each of these 24 hexoses yields unique ratios of a specific pair of fragment ions that allows for simultaneous determination of identification and absolute configuration. This mass spectrometric-based methodology can be readily employed for accurate identification of any isolated monosaccharide from an unknown biological source. This work provides a key step towards the goal of complete de novo carbohydrate analysis.
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Affiliation(s)
- Gabe Nagy
- Department of Chemistry, Indiana University, Bloomington, IN, 47405, USA
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11
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Liang Q, Macher T, Xu Y, Bao Y, Cassady CJ. MALDI MS In-Source Decay of Glycans Using a Glutathione-Capped Iron Oxide Nanoparticle Matrix. Anal Chem 2014; 86:8496-503. [DOI: 10.1021/ac502422a] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Affiliation(s)
- Qiaoli Liang
- Department
of Chemistry, The University of Alabama, Tuscaloosa, Alabama 35487, United States
| | - Thomas Macher
- Department
of Chemical and Biological Engineering, The University of Alabama, Tuscaloosa, Alabama 35487, United States
| | - Yaolin Xu
- Department
of Chemical and Biological Engineering, The University of Alabama, Tuscaloosa, Alabama 35487, United States
| | - Yuping Bao
- Department
of Chemical and Biological Engineering, The University of Alabama, Tuscaloosa, Alabama 35487, United States
| | - Carolyn J. Cassady
- Department
of Chemistry, The University of Alabama, Tuscaloosa, Alabama 35487, United States
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12
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Konda C, Londry FA, Bendiak B, Xia Y. Assignment of the stereochemistry and anomeric configuration of sugars within oligosaccharides via overlapping disaccharide ladders using MS(n). JOURNAL OF THE AMERICAN SOCIETY FOR MASS SPECTROMETRY 2014; 25:1441-1450. [PMID: 24722900 DOI: 10.1007/s13361-014-0881-4] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/08/2014] [Revised: 03/10/2014] [Accepted: 03/10/2014] [Indexed: 06/03/2023]
Abstract
A systematic approach is described that can pinpoint the stereo-structures (sugar identity, anomeric configuration, and location) of individual sugar units within linear oligosaccharides. Using a highly modified mass spectrometer, dissociation of linear oligosaccharides in the gas phase was optimized along multiple-stage tandem dissociation pathways (MS(n), n = 4 or 5). The instrument was a hybrid triple quadrupole/linear ion trap mass spectrometer capable of high-efficiency bidirectional ion transfer between quadrupole arrays. Different types of collision-induced dissociation (CID), either on-resonance ion trap or beam-type CID could be utilized at any given stage of dissociation, enabling either glycosidic bond cleavages or cross-ring cleavages to be maximized when wanted. The approach first involves optimizing the isolation of disaccharide units as an ordered set of overlapping substructures via glycosidic bond cleavages during early stages of MS(n), with explicit intent to minimize cross-ring cleavages. Subsequently, cross-ring cleavages were optimized for individual disaccharides to yield key diagnostic product ions (m/z 221). Finally, fingerprint patterns that establish stereochemistry and anomeric configuration were obtained from the diagnostic ions via CID. Model linear oligosaccharides were derivatized at the reducing end, allowing overlapping ladders of disaccharides to be isolated from MS(n). High confidence stereo-structural determination was achieved by matching MS(n) CID of the diagnostic ions to synthetic standards via a spectral matching algorithm. Using this MS(n) (n = 4 or 5) approach, the stereo-structures, anomeric configurations, and locations of three individual sugar units within two pentasaccharides were successfully determined.
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Affiliation(s)
- Chiharu Konda
- Department of Chemistry, Purdue University, West Lafayette, IN, 47907, USA
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13
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Rodríguez-Fernández R, Vázquez SA, Martínez-Núñez E. Collision-induced dissociation mechanisms of [Li(uracil)]+. Phys Chem Chem Phys 2013; 15:7628-37. [DOI: 10.1039/c3cp50564b] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
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14
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Golon A, Kuhnert N. Characterisation of “caramel-type” thermal decomposition products of selected monosaccharides including fructose, mannose, galactose, arabinose and ribose by advanced electrospray ionization mass spectrometry methods. Food Funct 2013; 4:1040-50. [DOI: 10.1039/c3fo30352g] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
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15
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Xia B, Zhou Y, Liu X, Xiao J, Liu Q, Gu Y, Ding L. Use of electrospray ionization ion-trap tandem mass spectrometry and principal component analysis to directly distinguish monosaccharides. RAPID COMMUNICATIONS IN MASS SPECTROMETRY : RCM 2012; 26:1259-1264. [PMID: 22555919 DOI: 10.1002/rcm.6219] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
RATIONALE Carbohydrates are good source of drugs and play important roles in metabolism processes and cellular interactions in organisms. Distinguishing monosaccharide isomers in saccharide derivates is an important and elementary work in investigating saccharides. It is important to develop a fast, simple and direct method for this purpose, which is described in this study. METHODS Stock solutions of monosaccharide with a concentration of 400 μM and sodium chloride at a concentration of 10 μM were made in water/methanol (50:50, v/v). The samples were subjected to electrospray ionization ion-trap tandem mass spectrometry (ESI-MS) and the detected [2M + Na - H(2)O](+) ions were further investigated by tandem mass spectrometry (MS/MS), followed by applying principal component analysis (PCA) on the obtained MS/MS data sets. RESULTS The MS/MS spectra of the [2M + Na - H(2)O](+) ions at m/z 365 for hexoses and m/z 305 for pentoses yielded unambiguous fragment patterns, while rhamnose can be directly identified by its ESI-MS [M + Na](+) ion at m/z 187. PCA showed clustering of MS/MS data of identical monosaccharide samples obtained from different experiments. By using this method, the monosaccharide in daucosterol hydrolysate was successfully identified. CONCLUSIONS A new strategy was developed for differentiation of the monosaccharides using ESI-MS/MS and PCA. In MS/MS spectra, the [2M + Na - H(2)O](+) ions yielded unambiguous distinction. PCA of the archived MS/MS data sets was applied to demonstrate the spatial resolution of the studied samples. This method presented a simple and reliable way for distinguishing monosaccharides by ESI-MS/MS.
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Affiliation(s)
- Bing Xia
- Key Laboratory of Mountain Ecological Restoration and Bioresource Utilization, Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu 610041, PR China
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16
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Zhu Z, Song L, Bartmess JE. Differentiation of underivatized monosaccharides by atmospheric pressure chemical ionization quadrupole time-of-flight mass spectrometry. RAPID COMMUNICATIONS IN MASS SPECTROMETRY : RCM 2012; 26:1320-1328. [PMID: 22555925 DOI: 10.1002/rcm.6229] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
RATIONALE Differentiation of underivatized monosaccharides is essential in the structural elucidation of oligosaccharides which are closely involved in many life processes. So far, such differentiation has been usually achieved by electrospray ionization mass spectrometry (ESI-MS). As an alternative to ESI-MS, atmospheric pressure chemical ionization mass spectrometry (APCI-MS) should provide complementary results. METHODS A quadrupole time-of-flight (QTOF) mass spectrometer with accurate mass measurement ability was used with an APCI heated nebulizer ion source because we believe that a recently published article using a single quadrupole mass spectrometer assigned incorrect identities for APCI ions from hexoses. Using APCI-QTOF, the MS(2) and pseudo-MS(3) mass spectra of 11 underivatized monosaccharides were obtained under various collision voltages. The mass spectra were carefully interpreted after accurate mass measurement. RESULTS Differentiation of three hexoses was achieved by different MS(2) spectra of their [M + NH(4)](+) and [M - H](-) ions. The MS(2) spectra of the [M + NH(4)](+) ions were also used to distinguish methyl α-D-glucose and methyl β-D-glucose, while the pseudo-MS(3) spectra of the [M + H](+) ions were utilized to differentiate the three hexosamine and N-acetylhexosamine stereoisomers. Unique [M + O(2)](-) ions were observed and their distinctive fragmentation patterns were utilized to differentiate the three hexosamine stereoisomers. CONCLUSIONS Although ESI coupled with single or triple quadrupole and ion trap mass spectrometers has been widely utilized in the differentiation of monosaccharides, this report demonstrated that APCI-QTOF-MS had its own advantages in achieving the same goal.
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Affiliation(s)
- Zhenqian Zhu
- Mass Spectrometry Center, Department of Chemistry, University of Tennessee, Knoxville, TN 37996-1600, USA
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17
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Ilboudo O, Tapsoba I, Bonzi-Coulibaly YL, Gerbaux P. Targeting structural motifs of flavonoid diglycosides using collision-induced dissociation experiments on flavonoid/Pb2+ complexes. EUROPEAN JOURNAL OF MASS SPECTROMETRY (CHICHESTER, ENGLAND) 2012; 18:465-473. [PMID: 23221119 DOI: 10.1255/ejms.1199] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
Differentiation of flavonoid congeners remains a challenging analytical problem and confirming the structures of the different isomers is difficult, even when they can be adequately separated from mixtures. In the present report, in order to overcome the limits of our recently proposed method that relies on the distinctive CID behaviors of [(flavonoid - H(+)) + Cu(2+)] complexes to obtain direct structural evidences, we decided to investigate the possibility of using Pb(II) complexation to generate significant differences upon CID. We selected five flavonoid diglycosides with targeted structural features to estimate the applicability of this methodology. Electrospray ionization from methanol-not acetonitrile-solutions was advantageously used for preparing the [(flavonoid diglycoside - H(+)) + Pb(2)+](+) complexes. Upon collisional activation, [(flavonoid diglycoside- H(+)) + Pb(2+)](+) ions mainly dissociate by glycosidic bond cleavage. Nevertheless, specific cross-ring cleavages are also induced and lead to a clear-cut determination of (i) the nature of the disaccharide group, i.e. rutinose or neohesperidose, (ii) the nature of the aglycone part, flavanone or flavone and (iii) the relative position of the disaccharide substituent on the aglycone part, i.e. 3-O- vs 7-O positions.
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Affiliation(s)
- Ousmane Ilboudo
- Laboratoire de Chimie Organique: Structure et Réactivité, UFR-SEA, Université de Ouagadougou, Burkina Faso
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18
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Brown DJ, Stefan SE, Berden G, Steill JD, Oomens J, Eyler JR, Bendiak B. Direct evidence for the ring opening of monosaccharide anions in the gas phase: photodissociation of aldohexoses and aldohexoses derived from disaccharides using variable-wavelength infrared irradiation in the carbonyl stretch region. Carbohydr Res 2011; 346:2469-81. [DOI: 10.1016/j.carres.2011.06.018] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2011] [Revised: 06/14/2011] [Accepted: 06/15/2011] [Indexed: 12/30/2022]
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19
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Assignment of the stereochemistry and anomeric configuration of structurally informative product ions derived from disaccharides: infrared photodissociation of glycosyl-glycolaldehydes in the negative ion mode. Carbohydr Res 2010; 345:2390-400. [DOI: 10.1016/j.carres.2010.09.001] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2010] [Revised: 08/29/2010] [Accepted: 09/01/2010] [Indexed: 12/30/2022]
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Perdian DC, Lee YJ. Imaging MS Methodology for More Chemical Information in Less Data Acquisition Time Utilizing a Hybrid Linear Ion Trap−Orbitrap Mass Spectrometer. Anal Chem 2010; 82:9393-400. [DOI: 10.1021/ac102017q] [Citation(s) in RCA: 59] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- D. C. Perdian
- Ames Laboratory, U.S. Department of Energy, and Department of Chemistry, Iowa State University of Science and Technology, Ames, Iowa 50011, United States
| | - Young Jin Lee
- Ames Laboratory, U.S. Department of Energy, and Department of Chemistry, Iowa State University of Science and Technology, Ames, Iowa 50011, United States
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Li G, Huang Z, Fu C, Xu P, Liu Y, Zhao YF. L-valine assisted distinction between the stereo-isomers of D-hexoses by positive ion ESI tandem mass spectrometry. JOURNAL OF MASS SPECTROMETRY : JMS 2010; 45:643-650. [PMID: 20527033 DOI: 10.1002/jms.1752] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
The binary mixtures of 7 hexoses and 20 amino acids were investigated by electrospray ionization ion trap mass spectrometry (ESI-ITMS). The adduct ions of the amino acid and the hexose were detected for 12 amino acids but not for the other 8 amino acids which are basic acidic amino acids and amides. The ions of amino acid-hexose complexes were further investigated by tandem mass spectrometry (MS/MS), and some of them just split easily into two parts whereas the others gave rich fragmentation, such as the complex ions of isoleucine, phenylalanine, tyrosine, and valine. We found that hexoses could be complexed by two molecules of valine but only by one molecule of the other amino acids. Among seven kinds of valine-hexose complexes coordinated by potassium ion, the MS(2) spectra of the ion at m/z 453 yielded unambiguous differentiation. And the fragmentation ions are sensitive to the stereochemical differences at the carbon-4 of hexoses in the complexes, as proved by the MS(2).
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Affiliation(s)
- Gang Li
- Department of Chemistry and The Key Laboratory for Chemical Biology of Fujian Province, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, P. R. China
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Fouquet T, Charles L. Distinction and quantitation of sugar isomers in ternary mixtures using the kinetic method. JOURNAL OF THE AMERICAN SOCIETY FOR MASS SPECTROMETRY 2010; 21:60-67. [PMID: 19836261 DOI: 10.1016/j.jasms.2009.09.002] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/07/2009] [Revised: 09/04/2009] [Accepted: 09/04/2009] [Indexed: 05/28/2023]
Abstract
Quantitative isomeric analysis of fructose, galactose, and glucose was achieved using electrospray ionization and trimeric ion dissociation with data analysis by the kinetic method. Several L-amino acids and divalent metal cations were tested to select the best systems for isomeric distinction and quantitation of each monosaccharide. High discrimination could be achieved for most tested systems, and serine/Cu(2+) and aspartic acid/Mn(2+) were selected for quantitative analysis due to their ability to strongly distinguish the three analytes and to allow long-term reproducible measuring conditions. Accurate quantitative results were obtained for all isomers using three-point corrected calibration curves, which account for the competition effects evidenced to occur between sugars for the formation of the trimeric complexes. As a result, the relative proportion of one isomer in the liquid and in the gas phase depends on the sugar mixture composition. However, for a given reference/metal system, the extent of competition effects was shown to be constant within a given pair of sugars. The correction factors could thus be established based on data obtained from binary mixtures and successfully used for ternary sample analysis.
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Affiliation(s)
- Thierry Fouquet
- Université Aix-Marseille I-CNRS, UMR 6264: Laboratoire Chimie Provence, Spectrométries Appliquées à la Chimie Structurale, Marseille, France
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Spezia R, Salpin JY, Gaigeot MP, Hase WL, Song K. Protonated Urea Collision-Induced Dissociation. Comparison of Experiments and Chemical Dynamics Simulations. J Phys Chem A 2009; 113:13853-62. [DOI: 10.1021/jp906482v] [Citation(s) in RCA: 52] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Riccardo Spezia
- Laboratoire Analyse et Modélisation pour la Biologie et l’Environnement, CNRS UMR 8587, Université d’Evry-Val-d’Essonne, Bd. F. Mitterrand, 91025 Evry Cedex, France, Department of Chemistry & Biochemistry, Texas Tech University, Lubbock, Texas 79409, and Department of Chemistry, Korea National University of Education, Chungbuk, 363-791 South Korea
| | - Jean-Yves Salpin
- Laboratoire Analyse et Modélisation pour la Biologie et l’Environnement, CNRS UMR 8587, Université d’Evry-Val-d’Essonne, Bd. F. Mitterrand, 91025 Evry Cedex, France, Department of Chemistry & Biochemistry, Texas Tech University, Lubbock, Texas 79409, and Department of Chemistry, Korea National University of Education, Chungbuk, 363-791 South Korea
| | - Marie-Pierre Gaigeot
- Laboratoire Analyse et Modélisation pour la Biologie et l’Environnement, CNRS UMR 8587, Université d’Evry-Val-d’Essonne, Bd. F. Mitterrand, 91025 Evry Cedex, France, Department of Chemistry & Biochemistry, Texas Tech University, Lubbock, Texas 79409, and Department of Chemistry, Korea National University of Education, Chungbuk, 363-791 South Korea
| | - William L. Hase
- Laboratoire Analyse et Modélisation pour la Biologie et l’Environnement, CNRS UMR 8587, Université d’Evry-Val-d’Essonne, Bd. F. Mitterrand, 91025 Evry Cedex, France, Department of Chemistry & Biochemistry, Texas Tech University, Lubbock, Texas 79409, and Department of Chemistry, Korea National University of Education, Chungbuk, 363-791 South Korea
| | - Kihyung Song
- Laboratoire Analyse et Modélisation pour la Biologie et l’Environnement, CNRS UMR 8587, Université d’Evry-Val-d’Essonne, Bd. F. Mitterrand, 91025 Evry Cedex, France, Department of Chemistry & Biochemistry, Texas Tech University, Lubbock, Texas 79409, and Department of Chemistry, Korea National University of Education, Chungbuk, 363-791 South Korea
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24
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Benassi M, Corilo YE, Uria D, Augusti R, Eberlin MN. Recognition and resolution of isomeric alkyl anilines by mass spectrometry. JOURNAL OF THE AMERICAN SOCIETY FOR MASS SPECTROMETRY 2009; 20:269-277. [PMID: 19004641 DOI: 10.1016/j.jasms.2008.10.004] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/27/2008] [Revised: 10/03/2008] [Accepted: 10/03/2008] [Indexed: 05/27/2023]
Abstract
Two MS techniques have been used to recognize and resolve a representative isomeric pair of N-alkyl and ring-alkyl substituted anilines. The first technique (1) uses MS/MS to perform ion/molecule reactions of structurally-diagnostic fragment ions (SDFI) whereas the second (2) uses traveling wave ion mobility spectrometry (TWIMS) of the pair of protonated molecules followed by on-line collision-induced dissociation (CID), that is, MS/TWIMS-CID/MS. Isomeric C(7)H(7)N(+) ions of m/z 106 (1' from 4-butylaniline and 2 from N-butylaniline) are formed as abundant fragments by 70 eV EI of the anilines, and found to function as suitable SDFI. Ions 1' and 2 display nearly identical unimolecular dissociation chemistry, but contrasting bimolecular reactivity with ethyl vinyl ether, isoprene, acrolein, and 2-methyl-1,3-dioxolane. Ion 2 forms adducts to a large extent whereas 1' is nearly inert towards all reactants tested. The intact protonated anilines are readily resolved and recognized by MS/TWIMS-CID/MS in a SYNAPT mass spectrometer (Waters Corporation, Manchester, UK). The protonated N-butyl aniline (the more compact isomer) displays shorter drift time and higher lability towards CID than its 4-butyl isomer. The general application of SDFI 1' and 2 and other homologous and analogous ions and MS/TWIMS-CID/MS for absolute recognition and resolution of isomeric families of N-alkyl and ring-alkyl mono-substituted anilines and analogues is discussed.
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Affiliation(s)
- Mario Benassi
- ThoMSon Mass Spectrometry Laboratory, Institute of Chemistry, State University of Campinas, Campinas, Brazil
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25
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Corilo YE, Eberlin MN. Recognizing alpha-, beta- or gamma-substitution in pyridines by mass spectrometry. JOURNAL OF MASS SPECTROMETRY : JMS 2008; 43:1636-1640. [PMID: 18563867 DOI: 10.1002/jms.1442] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
A general mass spectrometric method able to recognize the site of substitution of monosubstituted pyridines is described. The method requires that the molecule under investigation forms, upon ionization and dissociation, the respective alpha-, beta- or gamma- pyridinium ion of m/z 78. Pyridinium ions are stable and common fragments of ionized and protonated pyridines and are found to function as appropriate structurally diagnostic fragment ions. They can be identified by their characteristic and nearly identical collision-induced dissociation behavior and distinguished by the combined use of two structurally diagnostic ion/molecule reactions with acetonitrile and 2-methyl-1,3-dioxolane. alpha-, beta- or gamma-substitution in pyridines can, therefore, be securely recognized via an MS-only method based on structurally diagnostic ions and by the inspection of a single molecule (no need for intracomparisons within the whole set of isomers).
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Affiliation(s)
- Yuri E Corilo
- ThoMSon Mass Spectrometry Laboratory, Institute of Chemistry, State University of Campinas, 13083-970 Campinas SP, Brazil
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26
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Coskuner O, Bergeron DE, Rincon L, Hudgens JW, Gonzalez CA. Identification of Active Sites of Biomolecules. 1. Methyl-α-mannopyranoside and FeIII. J Phys Chem A 2008; 112:2940-7. [DOI: 10.1021/jp711759q] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Orkid Coskuner
- Computational Chemistry Group, Physical and Chemical Properties Division, National Institute of Standards and Technology, 100 Bureau Drive, Mail Stop 8380, Gaithersburg, Maryland 20899, Computational Materials Science Center, George Mason University, Research I, Fairfax, Virginia 22030, and Departamento de Química, Universidad de los Andes, Mérida-5101, Venezuela
| | - Denis E. Bergeron
- Computational Chemistry Group, Physical and Chemical Properties Division, National Institute of Standards and Technology, 100 Bureau Drive, Mail Stop 8380, Gaithersburg, Maryland 20899, Computational Materials Science Center, George Mason University, Research I, Fairfax, Virginia 22030, and Departamento de Química, Universidad de los Andes, Mérida-5101, Venezuela
| | - Luis Rincon
- Computational Chemistry Group, Physical and Chemical Properties Division, National Institute of Standards and Technology, 100 Bureau Drive, Mail Stop 8380, Gaithersburg, Maryland 20899, Computational Materials Science Center, George Mason University, Research I, Fairfax, Virginia 22030, and Departamento de Química, Universidad de los Andes, Mérida-5101, Venezuela
| | - Jeffrey W. Hudgens
- Computational Chemistry Group, Physical and Chemical Properties Division, National Institute of Standards and Technology, 100 Bureau Drive, Mail Stop 8380, Gaithersburg, Maryland 20899, Computational Materials Science Center, George Mason University, Research I, Fairfax, Virginia 22030, and Departamento de Química, Universidad de los Andes, Mérida-5101, Venezuela
| | - Carlos A. Gonzalez
- Computational Chemistry Group, Physical and Chemical Properties Division, National Institute of Standards and Technology, 100 Bureau Drive, Mail Stop 8380, Gaithersburg, Maryland 20899, Computational Materials Science Center, George Mason University, Research I, Fairfax, Virginia 22030, and Departamento de Química, Universidad de los Andes, Mérida-5101, Venezuela
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27
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Qian WL, Khan Z, Watson DG, Fearnley J. Analysis of sugars in bee pollen and propolis by ligand exchange chromatography in combination with pulsed amperometric detection and mass spectrometry. J Food Compost Anal 2008. [DOI: 10.1016/j.jfca.2007.07.001] [Citation(s) in RCA: 49] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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28
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Madhusudanan KP, Srivastava M. Identification of hexose diastereomers by means of tandem mass spectrometry of oxocarbenium ions followed by neural networks analysis. JOURNAL OF MASS SPECTROMETRY : JMS 2008; 43:126-131. [PMID: 17968854 DOI: 10.1002/jms.1317] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
The ion abundances in the tandem mass spectra of oxocarbenium ions generated from aldohexoses and ketohexoses under electrospray ionization conditions depend on their stereochemistry. The ratios of the abundances of two of the major ions m/z 85 and 91 are different in the aldohexoses and the ketohexoses. Principal component analysis (PCA) allowed visual differentiation of the hexose isomers. However, identification of an individual hexose was difficult. The data were subjected to neural network analysis (NNA) using a multilayer perceptron (MLP) model. The model was first trained using the data from the 11 hexoses and then used to identify the hexoses using fresh data acquired later. There was 100% identification of the various hexoses. The hexose units in methyl glucoside, mannoside and galactoside could also be identified accurately. The method can therefore be used for the characterization of hexose units from monosaccharides and glycosides.
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Affiliation(s)
- K P Madhusudanan
- Sophisticated Analytical Instrument Facility, Central Drug Research Institute, Lucknow-226001, India.
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29
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Firdoussi AE, Lafitte M, Tortajada J, Kone O, Salpin JY. Characterization of the glycosidic linkage of underivatized disaccharides by interaction with Pb(2+) ions. JOURNAL OF MASS SPECTROMETRY : JMS 2007; 42:999-1011. [PMID: 17567836 DOI: 10.1002/jms.1220] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/15/2023]
Abstract
Electrospray ionization in combination with tandem mass spectrometry and lead cationization is used to characterize the linkage position of underivatized disaccharides. Lead(II) ions react mainly with disaccharides by proton abstraction to generate [Pb(disaccharide)(m)-H](+) ions (m = 1-2). At low cone voltages, an intense series of doubly charged ions of general formula [Pb(disaccharide)(n)](2+) are also observed. Our study shows that MS/MS experiments have to be performed to differentiate Pb(2+)-coordinated disaccharides. Upon collision, [Pb(disaccharide)-H](+) species mainly dissociate according to glycosidic bond cleavage and cross-ring cleavages, leading to the elimination of C(n)H(2n)O(n) neutrals (n = 2-4). The various fragmentation processes allow the position of the glycosidic bond to be unambiguously located. Distinction between glc-glc and glc-fru disaccharides also appears straightforward. Furthermore, for homodimers of D-glucose our data demonstrate that the anomericity of the glycosidic bond can be characterized for the 1 --> n linkages (n = 2, 4, 6). Consequently, Pb(2+) cationization combined with tandem mass spectrometry appears particularly useful to identify underivatized disaccharides.
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Affiliation(s)
- Ahlam El Firdoussi
- Université d'Evry Val d'Essonne--Laboratoire Analyse et Modélisation pour la Biologie et l'Environnement, CNRS, Bâtiment Maupertuis, Boulevard François Mitterrand, 91025 EVRY, France
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30
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Lamsabhi AM, Alcamí M, Mó O, Yáñez M, Tortajada J, Salpin JY. Unimolecular Reactivity of Uracil–Cu2+ Complexes in the Gas Phase. Chemphyschem 2007; 8:181-7. [PMID: 17154324 DOI: 10.1002/cphc.200600399] [Citation(s) in RCA: 61] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
The gas-phase interaction of copper(II) ions with uracil are studied by means of mass spectrometry and B3LYP/6-311+G(2df,2p)//B3LYP/6-31G(d) calculations. Positive-ion electrospray spectra show that the reaction of uracil with copper(II) gives rise to singly charged species, whereby the [Cu(uracil--H)](+) complex is the most intense ion in the spectra at low concentration. Mass spectrometry/mass spectrometry (MS/MS) experiments show that the loss of HNCO and NCO are the dominant fragmentation processes, accompanied by a minor loss of CO. A systematic study of the spectra obtained with different labeled species, namely, 2-(13)C- (m/z 175), 2-(13)C,1,3-(15)N(2)- (m/z 177) and 3-(15)N-uracil (m/z 175), concludes unambiguously that both the loss of HNCO and NCO involve exclusively C2 and N3, whereas only C4 is involved in the loss of CO. Suitable mechanisms for these fragmentation processes are proposed through a theoretical survey of the corresponding potential energy surface. In these mechanisms, pi complexes, which lie high in energy with respect to the global minimum, play a significant role in the loss of NCO; this explains why both products, HNCO and NCO involve the same atoms of the ring.
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Affiliation(s)
- Al Mokhtar Lamsabhi
- Departamento de Química C-9, Facultad de Ciencias, Universidad Autónoma de Madrid, Cantoblanco, 28049-Madrid, Spain
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31
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Zhu X, Sato T. The distinction of underivatized monosaccharides using electrospray ionization ion trap mass spectrometry. RAPID COMMUNICATIONS IN MASS SPECTROMETRY : RCM 2007; 21:191-8. [PMID: 17171778 DOI: 10.1002/rcm.2825] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/13/2023]
Abstract
A convenient method for distinguishing underivatized isomeric monosaccharides has been established using electrospray ionization ion trap mass spectrometry (ESI-ITMS). Mass spectra of hexoses (glucose, galactose, and mannose), N-acetylhexosamines (N-acetylglucosamine, N-acetylgalactosamine, and N-acetylmannosamine) and hexosamines (glucosamine, galactosamine, and mannosamine) dissolved in solvent containing 1 mM ammonium acetate were obtained in the positive ion mode. Glucose was distinguished from galactose and mannose in the MS(2) spectrum of the [M+NH(4)](+) ion at m/z 198. The MS(3) spectra generated from [M+NH(4)-H(2)O-NH(3)](+) at m/z 163 showed that galactose and mannose could be distinguished by the ratio of peak intensities at m/z 145 and 127, while the three N-acetylhexosamine and hexosamine stereochemical isomers could be identified by the relative abundance ratios of product ions observed in MS(3) spectra. The investigation of MS and MS(2) spectra from complexes of these monosaccharides with Na(+) and Pb(2+) failed to distinguish these monosaccharide isomers. Therefore, multiple stage mass analysis by ESI-ITMS using either [M+NH(4)](+) or [M+H](+) was useful to distinguish between the isomers of monosaccharides.
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Affiliation(s)
- Xingyu Zhu
- Department of Biosciences and Informatics, Keio University, 3-14-1 Hiyoshi, Yokohama 223-8522, Japan
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32
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Madhusudanan KP. Tandem mass spectra of ammonium adducts of monosaccharides: differentiation of diastereomers. JOURNAL OF MASS SPECTROMETRY : JMS 2006; 41:1096-104. [PMID: 16888745 DOI: 10.1002/jms.1085] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/11/2023]
Abstract
Tandem mass spectra of ammonium adducts of monosaccharides gave characteristic fragmentation patterns involving elimination of NH3/H2O followed by multiple eliminations of H2O and cross ring cleavages. Tandem mass spectra were examined over a range of collision energies (1-20 eV) on a triple-quadrupole mass spectrometer. The breakdown behavior of the ammonium adducts revealed patterns that could differentiate diastereomers of monosaccharides.
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Affiliation(s)
- K P Madhusudanan
- Sophisticated Analytical Instrument Facility, Central Drug Research Institute, Lucknow-226001, India.
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Wan ECH, Yu JZ. Determination of sugar compounds in atmospheric aerosols by liquid chromatography combined with positive electrospray ionization mass spectrometry. J Chromatogr A 2006; 1107:175-81. [PMID: 16405980 DOI: 10.1016/j.chroma.2005.12.062] [Citation(s) in RCA: 81] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2005] [Revised: 12/15/2005] [Accepted: 12/19/2005] [Indexed: 11/26/2022]
Abstract
We here report a method for the determination of sugar compounds of known presence in atmospheric aerosols using liquid chromatography (LC) combined with positive electrospray ionization mass spectrometry (MS). The target analytes include C(3)-C(6) monosaccharide alcohols (glycerol, erythritol, xylitol, mannitol), C(5)-C(6) monosaccharides (xylose, glucose, and levoglucosan), a disaccharide (sucrose), and a trisaccharide (melezitose). A mobile phase consisting of 20% 10 mM aqueous ammonium acetate, 8% methanol, and 72% water was found to provide abundant [M+NH(4)](+) adduct ions when coupled with electrospray ionization. Use of a polymer-based amino analytical column resolved the target compounds from the bulk solvent and provided limited separation among the target compounds. The target analytes were quantified using their [M+NH(4)](+) ions. Sample pretreatment was greatly simplified in comparison with the more commonly used gas chromatographic methods. It involved extraction of aerosol filters in methanol, evaporation of the solvent, and reconstitution with 5 mM ammonium acetate in water prior to the LC-MS analysis. The analyte recoveries were measured at the levels of 100, 500 and 1000 microg/L to be in the range of 78-102%, 94-112%, and 92-110%, respectively. The detection limits were lower than 10 pmol/injection for the tested target compounds except for xylose. Xylose had a detection limit of 95 pmol/injection. The method was applied to analyze 30 atmospheric aerosol samples to demonstrate its feasibility. The LC-MS method made possible the detection of trisaccharides as aerosol constituents for the first time.
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Affiliation(s)
- Eric Chun Hong Wan
- Department of Chemistry, Hong Kong University of Science & Technology, Clear Water Bay, Kowloon, Hong Kong, China
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34
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Madhusudanan KP, Kanojiya S, Kumar B. Effect of stereochemistry on the electrospray ionization tandem mass spectra of transition metal chloride complexes of monosaccharides. JOURNAL OF MASS SPECTROMETRY : JMS 2005; 40:1044-54. [PMID: 15962357 DOI: 10.1002/jms.879] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/03/2023]
Abstract
The effect of stereochemistry on the complexation of aldohexoses (glucose, mannose, galactose, allose and talose) and ketohexoses (fructose, tagitose and sorbose) with transition metal chlorides (CoCl(2), NiCl(2), MnCl(2) and ZnCl(2)) has been investigated by electrospray ionization tandem mass spectrometry. Electrospray ionization of methanolic solutions of hexoses containing metal chlorides gave abundant ions corresponding to [M + MetCl](+) and [2M + MetCl](+) which on collision-induced dissociation gave characteristic fragment ions. The fragmentation pathways have been confirmed by examining methyl glucoside and several isotopically labeled glucoses. Eliminations of H(2)O and HCl, C-C cleavages and elimination of metalhydroxychloride are the competing fragmentation pathways observed. All these pathways seem to be influenced by the stereochemistry of the molecule. The fragmentation of the dimeric complexes, [2M + MetCl](+), is also controlled by the stereochemistry of the molecule. The abundance of the product ions corresponding to elimination of HCl is found to increase with increasing number of axial hydroxyl groups in aldohexoses. [2M + MetCl](+) dissociates by elimination of HCl followed by C(2)H(4)O(2) in aldohexose complexes and by elimination of HCl followed by C(3)H(6)O(3) in ketohexose complexes.
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Affiliation(s)
- K P Madhusudanan
- Sophisticated Analytical Instrument Facility, Central Drug Research Institute, Lucknow 226001, India.
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35
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Frański R, Gierczyk B, Schroeder G, Beck S, Springer A, Linscheid M. Mass spectrometric decompositions of cationized β-cyclodextrin. Carbohydr Res 2005; 340:1567-72. [PMID: 15878449 DOI: 10.1016/j.carres.2005.03.014] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2004] [Revised: 03/30/2005] [Accepted: 03/31/2005] [Indexed: 11/22/2022]
Abstract
The mass spectrometric decompositions of beta-cyclodextrin (beta-CD) complexed with a number of common divalent metal cations (Mg, Ca, Cd, Cu, Co and Pb), obtained under electrospray ionization conditions, are reported. The main fragmentation pathways of [beta-CD+Cat](2+) ions studied (Cat stands for divalent cation) consist of consecutive losses of sugar units. The rupture of C-C bond in sugar units, which occurs via hydrogen atom transfer from the fragment ion formed to the eliminated species, was also observed. Isotope labelling consisting of the exchange of all hydroxyl hydrogens for deuteriums, has been applied in order to understand better the formation of fragment ions. It was found that C-H hydrogen transfer proceeds only during fragmentation across C-C bonds.
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Affiliation(s)
- Rafał Frański
- Adam Mickiewicz University, Faculty of Chemistry, Poznań, Poland.
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36
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March RE, Stadey CJ. A tandem mass spectrometric study of saccharides at high mass resolution. RAPID COMMUNICATIONS IN MASS SPECTROMETRY : RCM 2005; 19:805-812. [PMID: 15714598 DOI: 10.1002/rcm.1860] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
Nine monosaccharides and four disaccharides were mass analyzed using a quadrupole time-of-flight tandem mass spectrometer combined with an electrospray ionization source. Product ion mass spectra of deprotonated, protonated, and sodiated saccharides were observed and were compared within each group of saccharides. Each of the deprotonated pentoses, hexoses and disaccharides yielded a significantly different product ion mass spectrum with the exception of alpha-lactose and beta-lactose. The disaccharides alpha- and beta-lactose differ only at the glycosidic linkage. Product ion mass spectra of protonated and sodiated alpha- and beta-lactose were indistinguishable also.
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Affiliation(s)
- Raymond E March
- Department of Chemistry, Trent University, Peterborough, ON, K9J 7B8, Canada.
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37
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Puskar L, Barran PE, Duncombe BJ, Chapman D, Stace AJ. Gas-Phase Study of the Chemistry and Coordination of Lead(II) in the Presence of Oxygen-, Nitrogen-, Sulfur-, and Phosphorus-Donating Ligands. J Phys Chem A 2004; 109:273-82. [PMID: 16839117 DOI: 10.1021/jp047637f] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Using a pickup technique in association with high-energy electron impact ionization, complexes have been formed in the gas phase between Pb(2+) and a wide range of ligands. The coordinating atoms are oxygen, nitrogen, sulfur, and phosphorus, together with complexes consisting of benzene and argon in association with Pb(2+). Certain ligands are unable to stabilze the metal dication, the most obvious group being water and the lower alcohols, but CS(2) is also unable to form [Pb(CS(2))(N)](2+) complexes. Unlike many other metal dication complexes, those associated with lead appear to exhibit very little chemical reactivity following collisional activation. Such reactions are normally promoted via charge transfer and are initiated using the energy difference between M(2+) + e(-) --> M(+) and L --> L(+) + e(-), which is typically approximately 5 eV. In the case of Pb(2+), this energy difference usually leads to the appearance of L(+) and the loss of a significant fraction of the remaining ligands as neutral species. In many instances, Pb(+) appears as a charge-transfer product. The only group of ligands to consistently exhibit chemical reactivity are those containing sulfur, where a typical product might be PbS(+)(L)(M) or PbSCH(3)(+)(L)(M).
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Affiliation(s)
- Ljiljana Puskar
- Department of Chemistry, University of Sussex, Falmer, Brighton BN1 9QJ, United Kingdom
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Nagy K, Vékey K, Imre T, Ludányi K, Barrow MP, Derrick PJ. Electrospray Ionization Fourier Transform Ion Cyclotron Resonance Mass Spectrometry of Human α-1-Acid Glycoprotein. Anal Chem 2004; 76:4998-5005. [PMID: 15373434 DOI: 10.1021/ac040019a] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The ultrahigh resolution and sensitivity of electrospray ionization Fourier transform ion cyclotron resonance (ESI-FTICR) mass spectrometry have for the first time been exploited for the characterization of highly sialylated glycoproteins, using human alpha-1-acid glycoprotein as the model compound. An alternative approach to the widely used high-performance liquid chromatography (HPLC) and matrix-assisted laser desorption/ionization (MALDI) assays is described. This new method does not require any enzymatic or chemical digestion (removal of sialyl groups or deglycosylation), chemical derivatization (introduction of chromophore groups), or preliminary chromatographic separation (HPLC or electrophoresis). Following ESI and accumulation of ions in a hexapole ion guide, ions are injected into the ICR cell. A selected mass window from the overall ion population is isolated and axialized prior to detection. After acquisition and Fourier transform of the transient signal the resulted spectrum is evaluated in order to determine the charge state of the detected ions and the isotope pattern of the measured protein glycoform. The presence of ions from the same glycoform with different charge states was confirmed. The advantages and limitations of the technique are discussed. Future prospects and possible applications are indicated.
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Affiliation(s)
- Kornél Nagy
- Institute of Chemistry, Chemical Research Center, Hungarian Academy of Sciences, H-1025 Pusztaszeri út 59-67, Budapest, Hungary
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Burford N, Eelman MD, LeBlanc WG. Identification of complexes involving toxic heavy metals with amino acid ligands by electrospray ionization mass spectrometry. CAN J CHEM 2004. [DOI: 10.1139/v04-095] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
Electrospray ionization mass spectra (ESI-MS) of reaction mixtures containing ions of the heavy metals, cadmium, mercury, thallium, lead, and bismuth with each of the naturally occurring amino acids allows for definitive identification of monocationic complexes in the gas phase. Prominent m/z peaks are assigned to ions of the type [E(Am) xH]+ (x = 0, 1, 2), [E(Am)2 xH]+ (x = 0, 1, 2), [E2(Am) xH]+ (x = 1, 2, 3), and (or) [E2(Am)2 xH]+ (x = 1, 3, 5) for all amino acids studied (Am) with all metals studied (E = Cd, Hg, Tl, Pb) except bismuth, which shows complexes with only seven amino acids (Am = His, Thr, Met, Cys, Hcys, Asn, Gln). The results demonstrate the potential application of ESI-MS as a versatile and efficient approach to study toxic heavy metals in biological systems.Key words: heavy metals, amino acids, electrospray ionization mass spectrometry.
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Burford N, Eelman MD, LeBlanc WG, Cameron TS, Robertson KN. Definitive identification of lead(ii)-amino acid adducts and the solid state structure of a lead–valine complex. Chem Commun (Camb) 2004:332-3. [PMID: 14740063 DOI: 10.1039/b311599b] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
Electrospray ionization mass spectra of lead(II) nitrate-amino acid mixtures enable unequivocal identification of lead complexes for each of the essential amino acids and a valine complex is reported as the first crystallographically characterized lead-amino acid complex.
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Affiliation(s)
- Neil Burford
- Department of Chemistry, Dalhousie University, Halifax, Nova Scotia B3H 4J3, Canada.
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Pikulski M, Brodbelt JS. Differentiation of flavonoid glycoside isomers by using metal complexation and electrospray ionization mass spectrometry. JOURNAL OF THE AMERICAN SOCIETY FOR MASS SPECTROMETRY 2003; 14:1437-1453. [PMID: 14652191 DOI: 10.1016/j.jasms.2003.07.002] [Citation(s) in RCA: 48] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
The elucidation of flavonoid isomers is accomplished by electrospray ionization tandem mass spectrometry (ESI-MS/MS) via formation and collisional activated dissociation (CAD) of metal/flavonoid complexes containing an auxiliary ligand. Addition of a metal salt and a suitable neutral auxiliary ligand to flavonoids in solution results in the formation of [M(II) (flavonoid-H) ligand]+ complexes by ESI which, upon collisional activated dissociation, often result in more distinctive fragmentation patterns than observed for conventional protonated or deprotonated flavonoids. Previously, 2,2'-bipyridine was used as an auxiliary ligand, and now we compare and explore the use of alternative pyridyl ligands, including 4,7-diphenyl-1,10-phenanthroline. Using this technique, three groups of flavonoid glycoside isomers are differentiated, including glycosides of apigenin, quercetin, and luteolin.
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Affiliation(s)
- Michael Pikulski
- Department of Chemistry and Biochemistry, The University of Texas at Austin, Austin, Texas 78712-0165, USA
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Salpin JY, Tortajada J. Gas-Phase Reactivity of Lead(II) Ions with d-Glucose. Combined Electrospray Ionization Mass Spectrometry and Theoretical Study. J Phys Chem A 2003. [DOI: 10.1021/jp022553x] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Affiliation(s)
- Jean-Yves Salpin
- Laboratoire Analyse et Environnement, UMR CNRS 8587, Bâtiment des Sciences, Université d'Evry Val d'Essonne, Boulevard François Mitterrand, 91025 Evry Cedex, France
| | - Jeanine Tortajada
- Laboratoire Analyse et Environnement, UMR CNRS 8587, Bâtiment des Sciences, Université d'Evry Val d'Essonne, Boulevard François Mitterrand, 91025 Evry Cedex, France
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Boutreau L, Léon E, Salpin JY, Amekraz B, Moulin C, Tortajada J. Gas-phase reactivity of silver and copper coordinated monosaccharide cations studied by electrospray ionization and tandem mass spectrometry. EUROPEAN JOURNAL OF MASS SPECTROMETRY (CHICHESTER, ENGLAND) 2003; 9:377-390. [PMID: 12939489 DOI: 10.1255/ejms.567] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
The analytical distinction of the most common isomeric underivatized hexoses was investigated by means of mass spectrometry experiments. Electrospray ionization and tandem mass spectrometry were used in the analysis of silver and copper-coordinated monosaccharides (D-glucose, D-galactose, D-fructose, O-methyl-alpha-D-glucose and O-methyl-beta-D-glucose). The results show that cationization by Ag(+) allows the differentiation of the three first monosaccharides while the complexes formed by association of Cu(+) with these three monosacharides display a similar reactivity that prevents stereoisomer distinction. Unlike copper, silver adduct-ions of both alpha and beta anomeric O-methyl-D-glucoses exhibit specific decomposition patterns (i.e. a loss of methanol for the alpha-anomer and a loss of silver hydride for the beta-anomer), which allow an easy characterization. A theoretical survey of selected complexes, based on the use of DFT calculations were carried out on both anomers in order to rationalize the experimental findings.
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Affiliation(s)
- Laurence Boutreau
- Laboratoire Analyse et Environment, UMR CNRS 8587, Université d'Evry d'Essonne Bât des Sceinces, Cedex, France
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Current literature in mass spectrometry. JOURNAL OF MASS SPECTROMETRY : JMS 2002; 37:652-661. [PMID: 12112749 DOI: 10.1002/jms.253] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
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