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Harvey DJ. Analysis of carbohydrates and glycoconjugates by matrix-assisted laser desorption/ionization mass spectrometry: An update for 2019-2020. MASS SPECTROMETRY REVIEWS 2022:e21806. [PMID: 36468275 DOI: 10.1002/mas.21806] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
This review is the tenth update of the original article published in 1999 on the application of matrix-assisted laser desorption/ionization (MALDI) mass spectrometry to the analysis of carbohydrates and glycoconjugates and brings coverage of the literature to the end of 2020. Also included are papers that describe methods appropriate to analysis by MALDI, such as sample preparation techniques, even though the ionization method is not MALDI. The review is basically divided into three sections: (1) general aspects such as theory of the MALDI process, matrices, derivatization, MALDI imaging, fragmentation, quantification and the use of arrays. (2) Applications to various structural types such as oligo- and polysaccharides, glycoproteins, glycolipids, glycosides and biopharmaceuticals, and (3) other areas such as medicine, industrial processes and glycan synthesis where MALDI is extensively used. Much of the material relating to applications is presented in tabular form. The reported work shows increasing use of incorporation of new techniques such as ion mobility and the enormous impact that MALDI imaging is having. MALDI, although invented nearly 40 years ago is still an ideal technique for carbohydrate analysis and advancements in the technique and range of applications show little sign of diminishing.
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Affiliation(s)
- David J Harvey
- Nuffield Department of Medicine, Target Discovery Institute, University of Oxford, Oxford, UK
- Department of Chemistry, University of Oxford, Oxford, Oxfordshire, United Kingdom
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Rana A, Manna T, Kumar Misra A. Synthesis of selenium linked disaccharides using glycosyl selenocyanates as selenium precursors. Tetrahedron Lett 2022. [DOI: 10.1016/j.tetlet.2022.154300] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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Shit P, Sahaji S, Misra AK. Synthesis of selenoglycosides and selenium linked disaccharides using reductive cleavage of diselenides. Carbohydr Res 2022; 516:108554. [DOI: 10.1016/j.carres.2022.108554] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2022] [Revised: 03/28/2022] [Accepted: 03/30/2022] [Indexed: 11/02/2022]
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The Very First Modification of Pleuromutilin and Lefamulin by Photoinitiated Radical Addition Reactions-Synthesis and Antibacterial Studies. Pharmaceutics 2021; 13:pharmaceutics13122028. [PMID: 34959310 PMCID: PMC8704873 DOI: 10.3390/pharmaceutics13122028] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2021] [Revised: 11/25/2021] [Accepted: 11/25/2021] [Indexed: 11/24/2022] Open
Abstract
Pleuromutilin is a fungal diterpene natural product with antimicrobial properties, semisynthetic derivatives of which are used in veterinary and human medicine. The development of bacterial resistance to pleuromutilins is known to be very slow, which makes the tricyclic diterpene skeleton of pleuromutilin a very attractive starting structure for the development of new antibiotic derivatives that are unlikely to induce resistance. Here, we report the very first synthetic modifications of pleuromutilin and lefamulin at alkene position C19–C20, by two different photoinduced addition reactions, the radical thiol-ene coupling reaction, and the atom transfer radical additions (ATRAs) of perfluoroalkyl iodides. Pleuromutilin were modified with the addition of several alkyl- and aryl-thiols, thiol-containing amino acids and nucleoside and carbohydrate thiols, as well as perfluoroalkylated side chains. The antibacterial properties of the novel semisynthetic pleuromutilin derivatives were investigated on a panel of bacterial strains, including susceptible and multiresistant pathogens and normal flora members. We have identified some novel semisynthetic pleuromutilin and lefamulin derivatives with promising antimicrobial properties.
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Bege M, Bereczki I, Molnár DJ, Kicsák M, Pénzes-Daku K, Bereczky Z, Ferenc G, Kovács L, Herczegh P, Borbás A. Synthesis and oligomerization of cysteinyl nucleosides. Org Biomol Chem 2020; 18:8161-8178. [PMID: 33020786 DOI: 10.1039/d0ob01890b] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Nucleoside and nucleic acid analogues are known to possess a considerable therapeutic potential. In this work, by coupling cysteine to nucleosides, we successfully synthesized compounds that may not only have interesting biological properties in their monomeric form, but can be used beyond that, for oligomerization, in order to produce new types of synthetic nucleic acids. We elaborated different strategies for the synthesis of cysteinyl nucleosides as monomers of cysteinyl nucleic acids using nucleophilic substitution or thiol-ene coupling as a synthetic tool, and utilised on two complementary nucleosides, uridine and adenosine. Dipeptidyl dinucleosides and pentameric cysteinyl uridine were prepared from the monomeric building blocks, which are the first members of a new class of peptide nucleic acids containing the entire ribofuranosyl nucleoside units bound to the peptide backbone.
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Affiliation(s)
- Miklós Bege
- Department of Pharmaceutical Chemistry, University of Debrecen, Debrecen, H-4032, Hungary. and Doctoral School of Pharmaceutical Sciences, University of Debrecen, Debrecen, H-4032, Hungary and MTA-DE Molecular Recognition and Interaction Research Group, University of Debrecen, Debrecen, H-4032, Hungary
| | - Ilona Bereczki
- Department of Pharmaceutical Chemistry, University of Debrecen, Debrecen, H-4032, Hungary.
| | - Dénes J Molnár
- Department of Pharmaceutical Chemistry, University of Debrecen, Debrecen, H-4032, Hungary.
| | - Máté Kicsák
- Department of Pharmaceutical Chemistry, University of Debrecen, Debrecen, H-4032, Hungary.
| | - Krisztina Pénzes-Daku
- Division of Clinical Laboratory Science, University of Debrecen, Debrecen, H-4032, Hungary
| | - Zsuzsanna Bereczky
- Division of Clinical Laboratory Science, University of Debrecen, Debrecen, H-4032, Hungary
| | - Györgyi Ferenc
- Nucleic Acid Synthesis Laboratory, Biological Research Center, Szeged, H-6726, Hungary
| | - Lajos Kovács
- Nucleic Acids Laboratory, Department of Medicinal Chemistry, University of Szeged, H-6720 Szeged, Hungary
| | - Pál Herczegh
- Department of Pharmaceutical Chemistry, University of Debrecen, Debrecen, H-4032, Hungary.
| | - Anikó Borbás
- Department of Pharmaceutical Chemistry, University of Debrecen, Debrecen, H-4032, Hungary.
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