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Forman A, Pfoh R, Eddenden A, Howell PL, Nitz M. Synthesis of defined mono-de-N-acetylated β-(1→6)-N-acetyl-d-glucosamine oligosaccharides to characterize PgaB hydrolase activity. Org Biomol Chem 2019; 17:9456-9466. [PMID: 31642455 DOI: 10.1039/c9ob02079a] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Many clinically-relevant biofilm-forming bacterial strains produce partially de-N-acetylated poly-β-(1→6)-N-acetyl-d-glucosamine (dPNAG) as an exopolysaccharide. In Gram-negative bacteria, the periplasmic protein PgaB is responsible for partial de-N-acetylation of PNAG prior to its export to the extracellular space. In addition to de-N-acetylase activity found in the N-terminal domain, PgaB contains a C-terminal hydrolase domain that can disrupt dPNAG-dependent biofilms and hydrolyzes dPNAG but not fully acetylated PNAG. The role of this C-terminal domain in biofilm formation has yet to be determined in vivo. Further characterization of the enzyme's hydrolase activity has been hampered by a lack of specific dPNAG oligosaccharides. Here, we report the synthesis of a defined mono de-N-acetylated dPNAG penta- and hepta-saccharide. Using mass spectrometry analysis and a fluorescence-based thin-layer chromatography (TLC) assay, we found that our defined dPNAG oligosaccharides are hydrolase substrates. In addition to the expected cleavage site, two residues to the reducing side of the de-N-acetylated residue, minor cleavage products on the non-reducing side of the de-N-acetylation site were observed. These findings provide quantitative data to support how PNAG is processed in Gram-negative bacteria.
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Affiliation(s)
- Adam Forman
- Department of Chemistry, University of Toronto, 80 St. George Street, Toronto, ON, Canada M5S 3H6.
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2
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Dräger M, Basu A. Galactan synthesis in a single step via oligomerization of monosaccharides. Beilstein J Org Chem 2014; 10:2658-63. [PMID: 25550728 PMCID: PMC4273286 DOI: 10.3762/bjoc.10.279] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2014] [Accepted: 10/28/2014] [Indexed: 11/23/2022] Open
Abstract
Galactans ranging in length from one to five residues were prepared in a single step by treatment of the glycosyl donor 2,3,4-tri-O-benzoyl-β-D-galactopyranosyl fluoride with lanthanum perchlorate in the presence of an initiator alcohol. The product oligosaccharides were readily chromatographically separable. This oligomerization was used to synthesize a pentagalactan in a single step from monosaccharide building blocks in reasonable overall yields.
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Affiliation(s)
- Marius Dräger
- Department of Chemistry, Box H, Brown University, Providence, RI 02912, USA
| | - Amit Basu
- Department of Chemistry, Box H, Brown University, Providence, RI 02912, USA
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Weaver LG, Singh Y, Blanchfield JT, Burn PL. A simple iterative method for the synthesis of β-(1→6)-glucosamine oligosaccharides. Carbohydr Res 2013; 371:68-76. [DOI: 10.1016/j.carres.2013.01.008] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2012] [Revised: 01/09/2013] [Accepted: 01/11/2013] [Indexed: 10/27/2022]
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4
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Yoshida N, Tanaka T, Noguchi M, Kobayashi A, Ishikura K, Ikenuma T, Seno H, Watanabe T, Kohri M, Shoda SI. One-pot Chemoenzymatic Route to Chitoheptaose via Specific Transglycosylation of Chitopentaose–Oxazoline on Chitinase-template. CHEM LETT 2012. [DOI: 10.1246/cl.2012.689] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Naoki Yoshida
- Department of Biomolecular Engineering, Tohoku University
| | | | - Masato Noguchi
- Department of Biomolecular Engineering, Tohoku University
| | | | | | | | - Hiromu Seno
- Department of Biomolecular Engineering, Tohoku University
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Fekete A, Borbás A, Gyémánt G, Kandra L, Fazekas E, Ramasubbu N, Antus S. Synthesis of β-(1→6)-linked N-acetyl-D-glucosamine oligosaccharide substrates and their hydrolysis by Dispersin B. Carbohydr Res 2011; 346:1445-53. [PMID: 21482420 DOI: 10.1016/j.carres.2011.03.029] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2011] [Revised: 03/06/2011] [Accepted: 03/16/2011] [Indexed: 10/18/2022]
Abstract
Dispersin B (DspB) from Aggregatibacter actinomycetemcomitans is a β-hexosaminidase exhibiting biofilm detachment activity. A series of β-(1→6)-linked N-acetyl-D-glucosamine thiophenyl glycosides with degree of polymerisation (DP) of 2, 3, 4 and 5 were synthesized, and substrate specificity of DspB was studied on the obtained oligosaccharides. For oligomer synthesis a 1+2, 2+2, 1+4 coupling strategy was applied, using bromo-sugars as glycosyl donors. The formation of 1,2-trans interglycosidic bond has been ensured by 2-phtalimido protecting group; chloroacetyl group was installed to mask temporarily the 6-hydroxyl and acetate esters were applied as permanent protecting groups. Enzymatic studies revealed that DP of the GlcNAc oligomers strongly affected the hydrolysis rate, and the hydrolytic activity of DspB on the tetramer and pentamer have been found to be approximately 10-fold higher than that of the dimer. This fact indicates that four units are required for a strong binding at the active centre of DspB. The role of aromatic amino acids W237, Y187 and Y278 in substrate specificity and catalysis was also examined using mutant enzymes.
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Affiliation(s)
- Anikó Fekete
- Research Group for Carbohydrates of Hungarian Academy of Sciences, PO Box 94, H-4010 Debrecen, Hungary
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6
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Kiyosada T, Shoda SI, Kobayashi S. Enzymatic ring-opening polyaddition for chitin synthesis: A cationic mechanism in basic solution? ACTA ACUST UNITED AC 2011. [DOI: 10.1002/masy.19981320138] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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7
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Weaver LG, Foster M, Singh Y, Burn PL, Blanchfield JT. A Direct, Heavy Metal Free Synthesis of the ?-1,6-Linked GlcNAc Disaccharide. Aust J Chem 2011. [DOI: 10.1071/ch11055] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
The major component of the matrix of many bacterial biofilms is a linear polymer of β-1,6-linked units of N-acetylglucosamine (polysaccharide intercellular adhesin or poly-N-acetyl-β-1,6-d-glucosamine). In order to facilitate synthetic vaccine construction we have developed a direct, inexpensive, and biologically compatible synthesis of the minimal building block of this polymer, a β-1,6-linked GlcNAc disaccharide, namely 6-O-[2-acetamido-2-deoxy-β-d-glucopyranosyl]-2-acetamido-2-deoxy-d-glucopyranose.
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Leung C, Chibba A, Gómez-Biagi RF, Nitz M. Efficient synthesis and protein conjugation of β-(1→6)-d-N-acetylglucosamine oligosaccharides from the polysaccharide intercellular adhesin. Carbohydr Res 2009; 344:570-5. [DOI: 10.1016/j.carres.2008.12.021] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2008] [Revised: 12/22/2008] [Accepted: 12/26/2008] [Indexed: 12/24/2022]
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9
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Miller-Podraza H, Weikkolainen K, Larsson T, Linde P, Helin J, Natunen J, Karlsson KA. Helicobacter pylori binding to new glycans based on N-acetyllactosamine. Glycobiology 2008; 19:399-407. [PMID: 19106234 DOI: 10.1093/glycob/cwn150] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
Previously we reported binding of Helicobacter pylori to various nonacid and sialylated neolacto carbohydrate structures using a wide range of natural and chemically modified sequences. A novel nonsialylated neolacto-based binding epitope, GlcNAc beta 3Gal beta 4GlcNAc, and analogous structures carrying terminal GalNAc beta 3, GalNAc alpha 3, or Gal alpha 3 showed the binding activity (Miller-Podraza H, Lanne B, Angström J, Teneberg S, Abul-Milh M, Jovall P-A, Karlsson H, Karlsson K-A. 2005. Novel binding epitope for Helicobacter pylori found in neolacto carbohydrate chains. J Biol Chem. 280:19695-19703). The present work reports two other H. pylori-binding nonsialylated neolacto-based structures, GlcA beta 3Gal beta 4GlcNAc beta 3-R and Glc beta 3Gal beta 4GlcNAc beta 3-R, and two amide derivatives (N-methyl and N-ethyl) of GlcA beta 3Gal beta 4GlcNAc beta 3-R which were bound by H. pylori. The latter structures turned out to be more effective as H. pylori binders than the parent saccharide. New reducing-end variants of the neolacto epitope including species containing N-acetyllactosamine linked beta 6 to GlcNAc or Gal with similarity to branched polylactosamines and mucins were prepared and tested. The results extend our previous findings on binding specificities of H. pylori and show that this pathogen is able to interact with an array of N-acetyllactosamine/neolacto structures, which may be of importance for the in vivo interaction of the bacterium with human cells. The information gained in this work may also be of value for rational design of anti-H. pylori drugs.
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Affiliation(s)
- Halina Miller-Podraza
- Department of Medical Biochemistry and Cell Biology, Institute of Biomedicine, Göteborg University, Box 440, SE 405 30 Göteborg, Sweden.
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11
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Lundt I, Bock K. Christian Pedersen 1926–2003. Adv Carbohydr Chem Biochem 2006. [DOI: 10.1016/s0065-2318(06)60001-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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12
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Lehtilä RL, Lehtilä JO, Roslund MU, Leino R. Selectively protected galactose derivatives for the synthesis of branched oligosaccharides. Tetrahedron 2004. [DOI: 10.1016/j.tet.2004.02.054] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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13
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Weignerová L, Vavrusková P, Pisvejcová A, Thiem J, Kren V. Fungal beta-N-acetylhexosaminidases with high beta-N-acetylgalactosaminidase activity and their use for synthesis of beta-GalNAc-containing oligosaccharides. Carbohydr Res 2003; 338:1003-8. [PMID: 12681926 DOI: 10.1016/s0008-6215(03)00044-2] [Citation(s) in RCA: 40] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
About 60 fungal strains were tested for production of extracellular beta-N-acetylhexosaminidases. A unique beta-N-acetylhexosaminidase with the beta-GalNAc-ase/beta-GlcNAc-ase ratio of 2.3-2.8 was found in the culture filtrates of some strains of Penicillium oxalicum. Addition of 20% (w/v) MgSO(4) increased the beta-GalNAc-ase/beta-GlcNAc-ase ratio to the value of 3.35. Cultivation conditions influence this ratio as well. beta-N-Acetylhexosaminidases from P. oxalicum CCF 2430 and Aspergillus oryzae CCF 1066 considerably differing in the GalNAc-ase activity were used for the synthesis of the following structures beta-D-GalpNAc-(1-->4)-D-GlcpNAc, beta-D-GalpNAc-(1-->6)-D-GlcpNAc, beta-D-GalpNAc-(1-->6)-D-GalpNAc, beta-D-GalpNAc-(1-->4)-alpha-D-GlcpNAcOAll and beta-D-GalpNAc-(1-->6)-beta-D-Galp-(1-->4)-alpha-D-GlcpNAcOAll to demonstrate the application of these new enzymes.
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Affiliation(s)
- Lenka Weignerová
- Laboratory of Biotransformation, Institute of Microbiology, Academy of Sciences of the Czech Republic, Vídenská 1083, Prague 4, CZ 142 20, Czech Republic
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Krist P, Herkommerová-Rajnochová E, Rauvolfová J, Semenuk T, Vavrusková P, Pavlícek J, Bezouska K, Petrus L, Kren V. Toward an optimal oligosaccharide ligand for rat natural killer cell activation receptor NKR-P1. Biochem Biophys Res Commun 2001; 287:11-20. [PMID: 11549246 DOI: 10.1006/bbrc.2001.5537] [Citation(s) in RCA: 41] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Aminosugars have a good affinity for the NKR-P1A protein, the major activating receptor at the surface of rat natural killer cells. We have systematically investigated the structural requirements of the recombinant soluble dimeric form of the receptor for its optimal carbohydrate ligands. While N-acetylD-mannosamine was the best neutral monosaccharide ligand, its participation in the context of an extended oligosaccharide sequence was equally important. The IC(50) value for the GalNAcbeta1 --> ManNAc disaccharide was nearly 10(-10) M with a further possible increase depending on the type of the glycosidic linkage and the aglycon nature. From the point of view of its availability, stability, and affinity for the receptor and a potential in vivo use, these studies are pivotal for the design of an oligosaccharide or glycomimetics suitable for further clustering into the multivalent glycodendrimers.
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Affiliation(s)
- P Krist
- Institute of Microbiology, Laboratory of Biotransformation, Academy of Sciences of Czech Republic, Vídenská 1083, CZ-142 20, Prague 4, Czech Republic
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A highly stereoselective synthesis of 1-amino-2,5-anhydro-1-deoxyhexitols via 2-trifluoromethyl-oxazolinium intermediates11Dedicated to Professor Hans Paulsen on the occasion of his 75th birthday.22Part of J.C. Norrild, “Reactivity of aminodeoxyalditols and derivaties in hydrogen fluoride”, Ph.D. Thesis, The Technical University of Denmark, 1996. Carbohydr Res 1997. [DOI: 10.1016/s0008-6215(96)00278-9] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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16
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Kobayashi S, Kiyosada T, Shoda SI. Synthesis of Artificial Chitin: Irreversible Catalytic Behavior of a Glycosyl Hydrolase through a Transition State Analogue Substrate. J Am Chem Soc 1996. [DOI: 10.1021/ja963011u] [Citation(s) in RCA: 173] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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17
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Singh S, Scigelova M, Vic G, Crout DHG. Glycosidase-catalysed oligosaccharide synthesis of di-, tri- and tetra-saccharides using the N-acetylhexosaminidase from Aspergillus oryzae and the β-galactosidase from Bacillus circulans. ACTA ACUST UNITED AC 1996. [DOI: 10.1039/p19960001921] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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18
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Kartha RKP, Kiso M, Hasegawa A, Jennings HJ. Simple and efficient strategy for making β-(1→6)-linked galactooligosaccharides using ‘naked’ galactopyranosides as acceptors. ACTA ACUST UNITED AC 1995. [DOI: 10.1039/p19950003023] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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19
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Miethchen R, Klein H, Pedersen C. Reactions with and in Anydrous Hydrogen Fluoride, 13. A Convenient One-Pot Synthesis of Glucofurano[2,1-d]oxazolines with an Additional 3,5,6-Orthoester Function. ACTA ACUST UNITED AC 1994. [DOI: 10.1002/jlac.199419940922] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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20
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Defaye J, García Fernández JM. Synthesis of dispirodioxanyl pseudo-oligosaccharides by selective protonic activation of isomeric glycosylfructoses in anhydrous hydrogen fluoride. Carbohydr Res 1994; 251:1-15. [PMID: 8149367 DOI: 10.1016/0008-6215(94)84273-6] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
Dispirodioxanyl pseudotetrasaccharides 6-O-alpha-D-glucopyranosyl-alpha-D-fructofuranose 6-O-alpha-D-glucopyranosyl-beta-D-fructofuranose 1,2':2,1'-dianhydride, 5-O-alpha-D-glucopyranosyl-alpha-D-fructopyranose 5-O-alpha-D-glucopyranosyl-beta-D-fructopyranose 1,2':2,1'-dianhydride, 4-O-alpha-D-glucopyranosyl-alpha-D-fructofuranose 4-O-alpha-D-glucopyranosyl-beta-D-fructopyranose 1,2':2,1'-dianhydride, 4-O-beta-D-galactopyranosyl-alpha-D-fructofuranose 4-O-beta-D-galactopyranosyl-beta-D-fructopyranose 1,2':2,1'-dianhydride, and 3-O-alpha-D-glucopyranosyl-alpha-D-fructofuranose 3-O-alpha-D-glucopyranosyl-beta-D-fructofuranose 1,2':2,1'-dianhydride were respectively obtained, on a preparative scale, by dissolution of the isomeric glycosylfructoses palatinose, leucrose, maltulose, lactulose, and turanose in anhydrous hydrogen fluoride. The reaction, involving selective protonation at the free anomeric position of the fructose unit, was extended to the preparation of the pseudotrisaccharides 6-O-alpha-D-glucopyranosyl-alpha-D-fructofuranose beta-D-fructopyranose 1,2':2',1-dianhydride from palatinose and fructose, and to its 3-O-, 4-O-, and 4'-O-glucosyl analogues using turanose and maltulose as the disaccharide precursor. The cross-reactions of palatinose with maltulose and with leucrose resulted in the preparation of 6-O-alpha-D-glucopyranosyl-alpha-D-fructofuranose 4-O-alpha-D-glucopyranosyl-beta-D-fructopyranose 1,2':2,1'-dianhydride and 6-O-alpha-D-glucopyranosyl-alpha-D-fructofuranose 5-O-alpha-D-glucopyranosyl-beta-D-fructopyranose 1,2':2,1'-dianhydride, respectively.
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Affiliation(s)
- J Defaye
- Département de Recherche Fondamentale, Matière Condensée/SESAM, Centre d'Etudes de Grenoble, France
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Defaye J, Gadelle A, Pedersen C. Acyloxonium ions in the high-yielding synthesis of oxolanes from alditols, hexoses, and hexonolactones catalysed by car☐ylic acids in anhydrous hydrogen fluoride. Carbohydr Res 1990. [DOI: 10.1016/0008-6215(90)80139-t] [Citation(s) in RCA: 37] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Affiliation(s)
- T Tsuchiya
- Institute of Bioorganic Chemistry, Kawasaki, Japan
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