1
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Dey K, Jayaraman N. Trivalent dialkylaminopyridine-catalyzed site-selective mono- O-acylation of partially-protected pyranosides. Org Biomol Chem 2024; 22:5134-5149. [PMID: 38847370 DOI: 10.1039/d4ob00599f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/27/2024]
Abstract
This work demonstrates trivalent tris-(3-N-methyl-N-pyridyl propyl)amine (1) catalyzing the site-selective mono-O-acylation of glycopyranosides. Different acid anhydrides were used for the acylation of monosaccharides, mediated by catalyst 1, at a loading of 1.5 mol%; the extent of site-selectivity and the yields of mono-O-acylation products were assessed. The reactions were performed between 2 and 10 h, depending on the nature of the acid anhydride, where the bulkier pivalic anhydride required a longer duration for acylation. The glycopyranosides are maintained as diols and triols, and from a set of experiments, the site-selectivity of acylations was observed to follow the intrinsic reactivities and stereochemistry of hydroxy functionalities. The trivalent catalyst 1 mediates the reactions with excellent site-selectivities for mono-O-acylation product formation in the studied glycopyranosides, in comparison to the monovalent N,N-dimethylamino pyridine (DMAP) catalyst. This study illustrates the benefits of the multivalency of catalytic moieties in catalysis.
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Affiliation(s)
- Kalyan Dey
- Indian Institute of Science, Bangalore 560012, India.
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2
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Lőrincz EB, Herczeg M, Houser J, Rievajová M, Kuki Á, Malinovská L, Naesens L, Wimmerová M, Borbás A, Herczegh P, Bereczki I. Amphiphilic Sialic Acid Derivatives as Potential Dual-Specific Inhibitors of Influenza Hemagglutinin and Neuraminidase. Int J Mol Sci 2023; 24:17268. [PMID: 38139095 PMCID: PMC10743929 DOI: 10.3390/ijms242417268] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2023] [Revised: 12/01/2023] [Accepted: 12/06/2023] [Indexed: 12/24/2023] Open
Abstract
In the shadow of SARS-CoV-2, influenza seems to be an innocent virus, although new zoonotic influenza viruses evolved by mutations may lead to severe pandemics. According to WHO, there is an urgent need for better antiviral drugs. Blocking viral hemagglutinin with multivalent N-acetylneuraminic acid derivatives is a promising approach to prevent influenza infection. Moreover, dual inhibition of both hemagglutinin and neuraminidase may result in a more powerful effect. Since both viral glycoproteins can bind to neuraminic acid, we have prepared three series of amphiphilic self-assembling 2-thio-neuraminic acid derivatives constituting aggregates in aqueous medium to take advantage of their multivalent effect. One of the series was prepared by the azide-alkyne click reaction, and the other two by the thio-click reaction to yield neuraminic acid derivatives containing lipophilic tails of different sizes and an enzymatically stable thioglycosidic bond. Two of the three bis-octyl derivatives produced proved to be active against influenza viruses, while all three octyl derivatives bound to hemagglutinin and neuraminidase from H1N1 and H3N2 influenza types.
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Affiliation(s)
- Eszter Boglárka Lőrincz
- Department of Pharmaceutical Chemistry, University of Debrecen, H-4032 Debrecen, Hungary; (E.B.L.); (M.H.); (A.B.); (P.H.)
- Doctoral School of Pharmaceutical Sciences, University of Debrecen, H-4032 Debrecen, Hungary
| | - Mihály Herczeg
- Department of Pharmaceutical Chemistry, University of Debrecen, H-4032 Debrecen, Hungary; (E.B.L.); (M.H.); (A.B.); (P.H.)
| | - Josef Houser
- National Centre for Biomolecular Research, Masaryk University, 611 37 Brno, Czech Republic; (J.H.); (L.M.); (M.W.)
- Central European Institute of Technology, Masaryk University, 625 00 Brno, Czech Republic
| | - Martina Rievajová
- Department of Biochemistry, Faculty of Science, Masaryk University, 611 37 Brno, Czech Republic;
| | - Ákos Kuki
- Department of Applied Chemistry, University of Debrecen, H-4032 Debrecen, Hungary;
| | - Lenka Malinovská
- National Centre for Biomolecular Research, Masaryk University, 611 37 Brno, Czech Republic; (J.H.); (L.M.); (M.W.)
- Central European Institute of Technology, Masaryk University, 625 00 Brno, Czech Republic
| | - Lieve Naesens
- Rega Institute for Medical Research, KU Leuven, B-3000 Leuven, Belgium;
| | - Michaela Wimmerová
- National Centre for Biomolecular Research, Masaryk University, 611 37 Brno, Czech Republic; (J.H.); (L.M.); (M.W.)
- Central European Institute of Technology, Masaryk University, 625 00 Brno, Czech Republic
- Department of Biochemistry, Faculty of Science, Masaryk University, 611 37 Brno, Czech Republic;
| | - Anikó Borbás
- Department of Pharmaceutical Chemistry, University of Debrecen, H-4032 Debrecen, Hungary; (E.B.L.); (M.H.); (A.B.); (P.H.)
- National Laboratory of Virology, University of Pécs, H-7624 Pécs, Hungary
- HUN-REN–UD Molecular Recognition and Interaction Research Group, University of Debrecen, H-4032 Debrecen, Hungary
| | - Pál Herczegh
- Department of Pharmaceutical Chemistry, University of Debrecen, H-4032 Debrecen, Hungary; (E.B.L.); (M.H.); (A.B.); (P.H.)
| | - Ilona Bereczki
- Department of Pharmaceutical Chemistry, University of Debrecen, H-4032 Debrecen, Hungary; (E.B.L.); (M.H.); (A.B.); (P.H.)
- National Laboratory of Virology, University of Pécs, H-7624 Pécs, Hungary
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3
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Exploiting non-covalent interactions in selective carbohydrate synthesis. Nat Rev Chem 2021; 5:792-815. [PMID: 37117666 DOI: 10.1038/s41570-021-00324-y] [Citation(s) in RCA: 31] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/10/2021] [Indexed: 02/08/2023]
Abstract
Non-covalent interactions (NCIs) are a vital component of biological bond-forming events, and have found important applications in multiple branches of chemistry. In recent years, the biomimetic exploitation of NCIs in challenging glycosidic bond formation and glycofunctionalizations has attracted significant interest across diverse communities of organic and carbohydrate chemists. This emerging theme is a major new direction in contemporary carbohydrate chemistry, and is rapidly gaining traction as a robust strategy to tackle long-standing issues such as anomeric and site selectivity. This Review thus seeks to provide a bird's-eye view of wide-ranging advances in harnessing NCIs within the broad field of synthetic carbohydrate chemistry. These include the exploitation of NCIs in non-covalent catalysed glycosylations, in non-covalent catalysed glycofunctionalizations, in aglycone delivery, in stabilization of intermediates and transition states, in the existence of intramolecular hydrogen bonding networks and in aggregation by hydrogen bonds. In addition, recent emerging opportunities in exploiting halogen bonding and other unconventional NCIs, such as CH-π, cation-π and cation-n interactions, in various aspects of carbohydrate chemistry are also examined.
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4
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Seitz A, Wende RC, Roesner E, Niedek D, Topp C, Colgan AC, McGarrigle EM, Schreiner PR. Site-Selective Acylation of Pyranosides with Oligopeptide Catalysts. J Org Chem 2021; 86:3907-3922. [PMID: 33617252 DOI: 10.1021/acs.joc.0c02772] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Herein, we report the oligopeptide-catalyzed site-selective acylation of partially protected monosaccharides. We identified catalysts that invert site-selectivity compared to N-methylimidazole, which was used to determine the intrinsic reactivity, for 4,6-O-protected glucopyranosides (trans-diols) as well as 4,6-O-protected mannopyranosides (cis-diols). The reaction yields up to 81% of the inherently unfavored 2-O-acetylated products with selectivities up to 15:1 using mild reaction conditions. We also determined the influence of protecting groups on the reaction and demonstrate that our protocol is suitable for one-pot reactions with multiple consecutive protection steps.
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Affiliation(s)
- Alexander Seitz
- Institute of Organic Chemistry, Justus Liebig University, Heinrich-Buff-Ring 17, 35392 Giessen, Germany
| | - Raffael C Wende
- Institute of Organic Chemistry, Justus Liebig University, Heinrich-Buff-Ring 17, 35392 Giessen, Germany
| | - Emily Roesner
- Institute of Organic Chemistry, Justus Liebig University, Heinrich-Buff-Ring 17, 35392 Giessen, Germany
| | - Dominik Niedek
- Institute of Organic Chemistry, Justus Liebig University, Heinrich-Buff-Ring 17, 35392 Giessen, Germany
| | - Christopher Topp
- Institute of Organic Chemistry, Justus Liebig University, Heinrich-Buff-Ring 17, 35392 Giessen, Germany
| | - Avene C Colgan
- Centre for Synthesis & Chemical Biology, UCD School of Chemistry, University College Dublin, Belfield, Dublin 4, Ireland
| | - Eoghan M McGarrigle
- Centre for Synthesis & Chemical Biology, UCD School of Chemistry, University College Dublin, Belfield, Dublin 4, Ireland
| | - Peter R Schreiner
- Institute of Organic Chemistry, Justus Liebig University, Heinrich-Buff-Ring 17, 35392 Giessen, Germany
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5
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Zhao CL, Deng JR, Gao YZ, Wu YX. Hemocompatible, biocompatible and antifouling Acylated dextran-g-polytetrahydrofuran graft copolymer with silver nanoparticles: Synthesis, characterization and properties. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2021; 123:111998. [PMID: 33812618 DOI: 10.1016/j.msec.2021.111998] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/04/2020] [Revised: 02/09/2021] [Accepted: 02/19/2021] [Indexed: 01/25/2023]
Abstract
The novel amphiphilic acylated dextran-g-polytetrahydrofuran (AcyDex-g-PTHF) graft copolymers have been successfully synthesized via combination of living cationic ring-opening polymerization of tetrahydrofuran (THF) to prepare living PTHF chains with different molecular weights (Mn, PTHF) of 800-2800 g/mol with nucleophile substitution to mediate grafting numbers (GN) of 4-25 per 1000 Dex monosaccharide. The microphase separation in the graft copolymer exists for the incompatibility of hard dextran backbone and soft PTHF branches and the confined crystallization of backbone. This copolymer behaves excellent hemocompatibility with red blood cells, good biocompatibility with HeLa cells and strong resistance to bovine serum albumin adsorption. The microspheres (~1 μm) of graft copolymers loaded with drug ibuprofen exhibit pH sensitive controlled drug release behavior. Moreover, the AcyDex-g-PTHF/Ag nanocomposites show good antibacterial property against E. coli and S. aureus. This novel hemocompatible, biocompatible and antifouling AcyDex-g-PTHF graft copolymer will have potential application in biological and medical fields.
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Affiliation(s)
- Cong-Lei Zhao
- State Key Laboratory of Chemical Resource Engineering, Beijing Advanced Innovation Center for Soft Matter Science and Engineering, Beijing Laboratory of Biomedical Materials, Beijing University of Chemical Technology, Beijing, 100029, China.
| | - Jin-Rui Deng
- State Key Laboratory of Chemical Resource Engineering, Beijing Advanced Innovation Center for Soft Matter Science and Engineering, Beijing Laboratory of Biomedical Materials, Beijing University of Chemical Technology, Beijing, 100029, China.
| | - Yu-Zhuang Gao
- State Key Laboratory of Chemical Resource Engineering, Beijing Advanced Innovation Center for Soft Matter Science and Engineering, Beijing Laboratory of Biomedical Materials, Beijing University of Chemical Technology, Beijing, 100029, China.
| | - Yi-Xian Wu
- State Key Laboratory of Chemical Resource Engineering, Beijing Advanced Innovation Center for Soft Matter Science and Engineering, Beijing Laboratory of Biomedical Materials, Beijing University of Chemical Technology, Beijing, 100029, China.
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6
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Wang T, Demchenko AV. Synthesis of carbohydrate building blocks via regioselective uniform protection/deprotection strategies. Org Biomol Chem 2019; 17:4934-4950. [PMID: 31044205 DOI: 10.1039/c9ob00573k] [Citation(s) in RCA: 37] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Discussed herein is the synthesis of partially protected carbohydrates by manipulating only one type of a protecting group for a given substrate. The first focus of this review is the uniform protection of an unprotected starting material in a way that only one (or two) hydroxyl group remains unprotected. The second focus involves regioselective partial deprotection of uniformly protected compounds in a way that only one (or two) hydroxyl group becomes liberated.
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Affiliation(s)
- Tinghua Wang
- Department of Chemistry and Biochemistry, University of Missouri - St Louis, One University Boulevard, St Louis, Missouri 63121, USA.
| | - Alexei V Demchenko
- Department of Chemistry and Biochemistry, University of Missouri - St Louis, One University Boulevard, St Louis, Missouri 63121, USA.
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7
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Vucko T, Pellegrini Moïse N, Lamandé-Langle S. Value-added carbohydrate building blocks by regioselective O-alkylation of C-glucosyl compounds. Carbohydr Res 2019; 477:1-10. [DOI: 10.1016/j.carres.2019.03.008] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2019] [Revised: 03/19/2019] [Accepted: 03/19/2019] [Indexed: 10/27/2022]
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8
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Dimakos V, Taylor MS. Site-Selective Functionalization of Hydroxyl Groups in Carbohydrate Derivatives. Chem Rev 2018; 118:11457-11517. [DOI: 10.1021/acs.chemrev.8b00442] [Citation(s) in RCA: 148] [Impact Index Per Article: 24.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Affiliation(s)
- Victoria Dimakos
- Department of Chemistry, University of Toronto, 80 St. George Street, Toronto, ON M5S 3H6, Canada
| | - Mark S. Taylor
- Department of Chemistry, University of Toronto, 80 St. George Street, Toronto, ON M5S 3H6, Canada
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9
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Donthulachitti C, Kothakapu SR, Shekunti RK, Neella CK. [DMAPTs] +
Cl −
: A Promising Versatile Regioselective Tosyl Transfer Reagent. ChemistrySelect 2017. [DOI: 10.1002/slct.201700675] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Chiranjeevi Donthulachitti
- Department of 5-Yr M.Sc. Chemistry; University College; Palamuru University; Mahabubanagar, Telangana 509001 India
| | - Sridhar Reddy Kothakapu
- Department of 5-Yr M.Sc. Chemistry; University College; Palamuru University; Mahabubanagar, Telangana 509001 India
| | - Ravi Kumar Shekunti
- Department of 5-Yr M.Sc. Chemistry; University College; Palamuru University; Mahabubanagar, Telangana 509001 India
| | - Chandra Kiran Neella
- Department of 5-Yr M.Sc. Chemistry; University College; Palamuru University; Mahabubanagar, Telangana 509001 India
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10
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Lipophilic teicoplanin pseudoaglycon derivatives are active against vancomycin- and teicoplanin-resistant enterococci. J Antibiot (Tokyo) 2017; 70:664-670. [PMID: 28144040 DOI: 10.1038/ja.2017.2] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2016] [Revised: 12/06/2016] [Accepted: 12/18/2016] [Indexed: 12/18/2022]
Abstract
A selection of nine derivatives of teicoplanin pseudoaglycon were tested in vitro against clinical vancomycin-resistant Enterococcus strains possessing vanA, vanB or both genes. The bacteria were characterized by PCR for the identification of their resistance genes. The tested compounds contain lipoic acid, different carbohydrates and aryl groups as lipophilic moieties. About one-third of the teicoplanin-resistant strains were shown to be susceptible to one or more of the glycopeptide derivatives.
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11
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Rocheleau S, Pottel J, Huskić I, Moitessier N. Highly Regioselective Monoacylation of Unprotected Glucopyranoside Using Transient Directing-Protecting Groups. European J Org Chem 2017. [DOI: 10.1002/ejoc.201601457] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Affiliation(s)
- Sylvain Rocheleau
- Department of Chemistry; McGill University; 801, Sherbrooke St·W. H3A 0B8 Montreal Canada
| | - Joshua Pottel
- Department of Chemistry; McGill University; 801, Sherbrooke St·W. H3A 0B8 Montreal Canada
| | - Igor Huskić
- Department of Chemistry; McGill University; 801, Sherbrooke St·W. H3A 0B8 Montreal Canada
| | - Nicolas Moitessier
- Department of Chemistry; McGill University; 801, Sherbrooke St·W. H3A 0B8 Montreal Canada
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12
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13
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Mishiro K, Takeuchi H, Furuta T, Kawabata T. A Concise Access to C2-Symmetric Chiral 4-Pyrrolidinopyridine Catalysts with Dual Functional Side Chains. Chem Pharm Bull (Tokyo) 2016; 64:1073-7. [PMID: 27150597 DOI: 10.1248/cpb.c16-00292] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
A practical method was developed for the preparation of a diastereomeric library of C2-symmetric chiral 4-pyrrolidinopyridine catalysts with dual amide side chains. Use of a racemic precursor is the key to the concise production of catalysts with diverse stereochemisty.
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14
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Wang C, Yuan J, Zhang LL, Wei W. Pharmacokinetic comparisons of Paeoniflorin and Paeoniflorin-6'O-benzene sulfonate in rats via different routes of administration. Xenobiotica 2016; 46:1142-1150. [DOI: 10.3109/00498254.2016.1149633] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Chun Wang
- Institute of Clinical Pharmacology, Anhui Medical University, Key Laboratory of anti-Inflammatory and Immune Medicine of the Education Ministry of China, Anhui Collaborative Innovation Center of anti-Inflammatory and Immune Medicine, Hefei, PR China
| | - Jun Yuan
- Institute of Clinical Pharmacology, Anhui Medical University, Key Laboratory of anti-Inflammatory and Immune Medicine of the Education Ministry of China, Anhui Collaborative Innovation Center of anti-Inflammatory and Immune Medicine, Hefei, PR China
| | - Ling Ling Zhang
- Institute of Clinical Pharmacology, Anhui Medical University, Key Laboratory of anti-Inflammatory and Immune Medicine of the Education Ministry of China, Anhui Collaborative Innovation Center of anti-Inflammatory and Immune Medicine, Hefei, PR China
| | - Wei Wei
- Institute of Clinical Pharmacology, Anhui Medical University, Key Laboratory of anti-Inflammatory and Immune Medicine of the Education Ministry of China, Anhui Collaborative Innovation Center of anti-Inflammatory and Immune Medicine, Hefei, PR China
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15
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Jäger M, Minnaard AJ. Regioselective modification of unprotected glycosides. Chem Commun (Camb) 2016; 52:656-64. [DOI: 10.1039/c5cc08199h] [Citation(s) in RCA: 64] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The regioselective modification of unprotected glycosides represents shortcuts in carbohydrate chemistry and enables efficient routes to complex derivatives.
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Affiliation(s)
- Manuel Jäger
- Stratingh Institute for Chemistry
- University of Groningen
- 9747 AG Groningen
- The Netherlands
| | - Adriaan J. Minnaard
- Stratingh Institute for Chemistry
- University of Groningen
- 9747 AG Groningen
- The Netherlands
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16
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Takeuchi H, Mishiro K, Ueda Y, Fujimori Y, Furuta T, Kawabata T. Total Synthesis of Ellagitannins through Regioselective Sequential Functionalization of Unprotected Glucose. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201500700] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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17
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Takeuchi H, Mishiro K, Ueda Y, Fujimori Y, Furuta T, Kawabata T. Total Synthesis of Ellagitannins through Regioselective Sequential Functionalization of Unprotected Glucose. Angew Chem Int Ed Engl 2015; 54:6177-80. [DOI: 10.1002/anie.201500700] [Citation(s) in RCA: 69] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2015] [Indexed: 11/08/2022]
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18
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Evtushenko EV. Regioselective Benzoylation of 4,6-O-Benzylidene Acetals of Glycopyranosides in the Presence of Transition Metals. J Carbohydr Chem 2015. [DOI: 10.1080/07328303.2014.996291] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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19
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Taylor MS. Catalyst-Controlled, Regioselective Reactions of Carbohydrate Derivatives. SITE-SELECTIVE CATALYSIS 2015; 372:125-55. [DOI: 10.1007/128_2015_656] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
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20
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Bereczki I, Kicsák M, Dobray L, Borbás A, Batta G, Kéki S, Nikodém ÉN, Ostorházi E, Rozgonyi F, Vanderlinden E, Naesens L, Herczegh P. Semisynthetic teicoplanin derivatives as new influenza virus binding inhibitors: synthesis and antiviral studies. Bioorg Med Chem Lett 2014; 24:3251-4. [PMID: 24974341 DOI: 10.1016/j.bmcl.2014.06.018] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2014] [Revised: 06/06/2014] [Accepted: 06/08/2014] [Indexed: 11/18/2022]
Abstract
In order to obtain new, cluster-forming antibiotic compounds, teicoplanin pseudoaglycone derivatives containing two lipophilic n-octyl chains have been synthesized. The compounds proved to be poor antibacterials, but, surprisingly, they exhibited potent anti-influenza virus activity against influenza A strains. This antiviral action was related to inhibition of the binding interaction between the virus and the host cell. Related analogs bearing methyl substituents in lieu of the octyl chains, displayed no anti-influenza virus activity. Hence, an interaction between the active, dually n-octylated compounds and the lipid bilayer of the host cell can be postulated, to explain the observed inhibition of influenza virus attachment.
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Affiliation(s)
- Ilona Bereczki
- Department of Pharmaceutical Chemistry, University of Debrecen, Egyetem tér 1, H-4032 Debrecen, Hungary
| | - Máté Kicsák
- Department of Pharmaceutical Chemistry, University of Debrecen, Egyetem tér 1, H-4032 Debrecen, Hungary
| | - Laura Dobray
- Department of Pharmaceutical Chemistry, University of Debrecen, Egyetem tér 1, H-4032 Debrecen, Hungary
| | - Anikó Borbás
- Department of Pharmaceutical Chemistry, University of Debrecen, Egyetem tér 1, H-4032 Debrecen, Hungary
| | - Gyula Batta
- Department of Organic Chemistry, University of Debrecen, H-4032 Debrecen, Hungary
| | - Sándor Kéki
- Department of Applied Chemistry, University of Debrecen, H-4032 Debrecen, Hungary
| | - Éva Nemes Nikodém
- Microbiology Laboratory, Department of Dermatology, Venerology and Dermatooncology, Semmelweis University, Mária u. 41, H-1085 Budapest, Hungary
| | - Eszter Ostorházi
- Microbiology Laboratory, Department of Dermatology, Venerology and Dermatooncology, Semmelweis University, Mária u. 41, H-1085 Budapest, Hungary
| | - Ferenc Rozgonyi
- Microbiology Laboratory, Department of Dermatology, Venerology and Dermatooncology, Semmelweis University, Mária u. 41, H-1085 Budapest, Hungary
| | | | - Lieve Naesens
- Rega Institute for Medical Research, KU Leuven, B-3000 Leuven, Belgium.
| | - Pál Herczegh
- Department of Pharmaceutical Chemistry, University of Debrecen, Egyetem tér 1, H-4032 Debrecen, Hungary.
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Mastihubová M, Mastihuba V. Donor specificity and regioselectivity in Lipolase mediated acylations of methyl α-D-glucopyranoside by vinyl esters of phenolic acids and their analogues. Bioorg Med Chem Lett 2013; 23:5389-92. [PMID: 23953194 DOI: 10.1016/j.bmcl.2013.07.051] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2013] [Revised: 07/22/2013] [Accepted: 07/23/2013] [Indexed: 11/25/2022]
Abstract
Methyl α-D-glucopyranoside as a model acceptor was acylated by several phenolic and non-phenolic vinyl esters using immobilised Lipolase. Donor specificity and regioselectivity of reaction were investigated. Conversion and rate of acylation by structurally varied donors indicates that the synthetic reactivity of Lipolase corresponds to the hydrolytic activity of feruloyl esterase type A. Lipolase exhibited remarkable regioselectivity for primary position of methyl α-D-glucopyranoside. The acylation occurred exclusively at 6-O primary position when vinyl esters of phenolic acids (hydroxybenzoates, hydroxyphenylalkanoates and hydroxycinnamates) served as acyl donors (5-77%). In addition to the major 6-O-acyl products (52-79%), 2,6-di-O-acylated derivatives were isolated from reaction mixtures (2-13%) when non-phenolic donors were used (vinyl esters of fully methoxylated derivatives of phenolic acids, along with vinyl benzoates, cinnamates or some heterocyclic analogues).
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Affiliation(s)
- Mária Mastihubová
- Institute of Chemistry, Center for Glycomics, Slovak Academy of Sciences, Bratislava, Slovakia.
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22
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Evtushenko EV. Regioselective benzoylation of glycopyranosides by benzoic anhydride in the presence of Cu(CF3COO)2. Carbohydr Res 2012; 359:111-9. [DOI: 10.1016/j.carres.2012.06.020] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2012] [Revised: 06/22/2012] [Accepted: 06/30/2012] [Indexed: 11/30/2022]
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Ueda Y, Mishiro K, Yoshida K, Furuta T, Kawabata T. Regioselective diversification of a cardiac glycoside, lanatoside C, by organocatalysis. J Org Chem 2012; 77:7850-7. [PMID: 22870937 DOI: 10.1021/jo301007x] [Citation(s) in RCA: 61] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Acylation of lanatoside C in the presence of organocatalyst 5 gave the C(4'''')-O-acylate in up to 90% regioselectivity (catalyst-controlled regioselectivity). Various functionalized acyl groups can be introduced at the C(4'''')-OH by a mixed anhydride method in the presence of 5 or the related organocatalyst. On the other hand, DMAP-catalyzed acylation of lanatoside C gave the C(3'''')-O-acylate in up to 97% regioselectivity (substrate-controlled regioselectivity). Thus, diverse regioselective introduction of acyl groups among eight free hydroxy groups of lanatoside C was achieved.
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Affiliation(s)
- Yoshihiro Ueda
- Institute for Chemical Research, Kyoto University, Uji, Kyoto 611-0011, Japan
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24
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Baba A, Yoshioka T. Complementary and Synergistic Roles in Enzyme-Catalyzed Regioselective and Complete Hydrolytic Deprotection of O-Acetylated β-d-Glucopyranosides of N-Arylacetohydroxamic Acids. J Org Chem 2012; 77:1675-84. [DOI: 10.1021/jo202123s] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Akiko Baba
- Hokkaido Pharmaceutical University School of Pharmacy, 7-1 Katsuraoka-cho, Otaru, Hokkaido 047-0264,
Japan
| | - Tadao Yoshioka
- Hokkaido Pharmaceutical University School of Pharmacy, 7-1 Katsuraoka-cho, Otaru, Hokkaido 047-0264,
Japan
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25
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Belaissaoui A, Saez IM, Cowling SJ, Zeng X, Goodby JW. Supermolecular Chiral Mesogenic Tripedes. Chemistry 2012; 18:2366-73. [DOI: 10.1002/chem.201102193] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2011] [Indexed: 11/09/2022]
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26
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Lawandi J, Rocheleau S, Moitessier N. Directing/protecting groups mediate highly regioselective glycosylation of monoprotected acceptors. Tetrahedron 2011. [DOI: 10.1016/j.tet.2011.07.026] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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27
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Sau A, Misra AK. Environmentally Benign Preparation of Benzylidene Acetal of Carbohydrate Derivatives in PEG 600. J Carbohydr Chem 2011. [DOI: 10.1080/07328303.2011.585260] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- Abhijit Sau
- a Bose Institute, Division of Molecular Medicine , P-1/12, C.I.T. Scheme VII-M, Kolkata, 700054, India
| | - Anup Kumar Misra
- a Bose Institute, Division of Molecular Medicine , P-1/12, C.I.T. Scheme VII-M, Kolkata, 700054, India
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28
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Pedersen CM, Olsen J, Brka AB, Bols M. Quantifying the electronic effects of carbohydrate hydroxy groups by using aminosugar models. Chemistry 2011; 17:7080-6. [PMID: 21542038 DOI: 10.1002/chem.201100020] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2011] [Indexed: 11/07/2022]
Abstract
Methyl amino-deoxy-glycosides with α- and β-gluco, α-galacto, or α-manno stereochemistry with the amino functionality in each of the four possible non-anomeric positions have been synthesized and their pK(a) values determined by titration. These model compounds were chosen because they are the amino derivatives of the most common glycosyl acceptors. From this study it was possible to evaluate the electron density at each of the given positions in the carbohydrate and compare them. Some general trends were observed: The basicity of the amino groups decreases in the order 6-NH(2)>3-NH(2)>2-NH(2)>4-NH(2) (referring to the position). The basicity of a of an amino-deoxy-sugar generally increases when one or more substituents on the sugar ring are axial. The basicity decreases when the amine is antiperiplanar to an oxygen atom. These findings are in agreement with the observations obtained from glycosylation chemistry and the regioselective protection of sugars.
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29
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Kaeothip S, Paranjape G, Terrill SE, Bongat AFG, Udan MLD, Kamkhachorn T, Johnson HL, Nichols MR, Demchenko AV. Development of LPS antagonistic therapeutics: synthesis and evaluation of glucopyranoside-spacer-amino acid motifs. RSC Adv 2011. [DOI: 10.1039/c1ra00145k] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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30
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Yoshida K, Furuta T, Kawabata T. Perfectly regioselective acylation of a cardiac glycoside, digitoxin, via catalytic amplification of the intrinsic reactivity. Tetrahedron Lett 2010. [DOI: 10.1016/j.tetlet.2010.07.036] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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31
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Mascitti V, Robinson RP, Préville C, Thuma BA, Carr CL, Reese MR, Maguire RJ, Leininger MT, Lowe A, Steppan CM. Syntheses of C-5-spirocyclic C-glycoside SGLT2 inhibitors. Tetrahedron Lett 2010. [DOI: 10.1016/j.tetlet.2010.02.024] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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32
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Muramatsu W, Mishiro K, Ueda Y, Furuta T, Kawabata T. Perfectly Regioselective and Sequential Protection of Glucopyranosides. European J Org Chem 2010. [DOI: 10.1002/ejoc.200901393] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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33
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34
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Keddie NS, Bultynck G, Luyten T, Slawin AM, Conway SJ. A type 2 Ferrier rearrangement-based synthesis of d-myo-inositol 1,4,5-trisphosphate. ACTA ACUST UNITED AC 2009. [DOI: 10.1016/j.tetasy.2009.03.006] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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35
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Bikard Y, Mezaache R, Weibel JM, Benkouider A, Sirlin C, Pale P. Diarylmethyl ethers and Pd salts or complexes: a perfect combination for the protection and deprotection of alcohols. Tetrahedron 2008. [DOI: 10.1016/j.tet.2008.08.026] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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36
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Patil PR, Ravindranathan Kartha KP. Application of Ball Milling Technology to Carbohydrate Reactions: I. Regioselective Primary Hydroxyl Protection of Hexosides and Nucleoside by Planetary Ball Milling‡. J Carbohydr Chem 2008. [DOI: 10.1080/07328300802218713] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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37
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Panchadhayee R, Kumar Misra A. Efficient Iodine‐Catalyzed Preparation of Benzylidene Acetals of Carbohydrate Derivatives. J Carbohydr Chem 2008. [DOI: 10.1080/07328300802030837] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Affiliation(s)
- Rajib Panchadhayee
- a Medicinal and Process Chemistry Division , Central Drug Research Institute , Lucknow , UP , India
| | - Anup Kumar Misra
- a Medicinal and Process Chemistry Division , Central Drug Research Institute , Lucknow , UP , India
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38
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Roslund MU, Aitio O, Wärnå J, Maaheimo H, Murzin DY, Leino R. Acyl group migration and cleavage in selectively protected beta-d-galactopyranosides as studied by NMR spectroscopy and kinetic calculations. J Am Chem Soc 2008; 130:8769-72. [PMID: 18543925 DOI: 10.1021/ja801177s] [Citation(s) in RCA: 69] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The migration of acetyl, pivaloyl, and benzoyl protective groups and their relative stabilities at variable pH for a series of beta- d-galactopyranoses were studied by NMR spectroscopy. The clockwise and counterclockwise migration rates for the different ester groups were accurately determined by use of a kinetic model. The results presented provide new insights into the acid and base stabilities of commonly used ester protecting groups and the phenomenon of acyl group migration and may prove useful in the planning of synthesis strategies.
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Affiliation(s)
- Mattias U Roslund
- Laboratory of Organic Chemistry and Laboratory of Industrial Chemistry, Abo Akademi University, FI-20500 Abo, Finland.
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Sánchez-Roselló M, Puchlopek ALA, Morgan AJ, Miller SJ. Site-selective catalysis of phenyl thionoformate transfer as a tool for regioselective deoxygenation of polyols. J Org Chem 2008; 73:1774-82. [PMID: 18229939 PMCID: PMC4189089 DOI: 10.1021/jo702334z] [Citation(s) in RCA: 60] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
We report the application of peptide-embedded imidazoles as catalysts for the site-selective delivery of the phenyl thionoformate unit as a prelude to deoxygenation reactions of polyols. Methodology was developed that allows for the synthesis of thiocarbonyl derivatives based on a combination of additives that include N-alkylimidazoles and FeCl3 as co-catalysts. The use of this reagent combination leads to increased reaction rates and efficient yields relative to those of simple base-mediated reactions. In terms of controlling regioselectivity during the course of polyol modification, we found that histidine-containing peptides, in combination with FeCl3, could lead to modulation of the product distribution. Through screening of peptides and control of reaction conditions, products could be observed that reflected both the inherent preference of substrates and also reversal of inherent selectivity.
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Affiliation(s)
| | | | - Adam J. Morgan
- Department of Chemistry, Merkert Chemistry Center, Boston College, Chestnut Hill, MA 02467
| | - Scott J. Miller
- Department of Chemistry, Yale University, P.O. Box 208107, New Haven, CT 06520-8107
- Department of Chemistry, Merkert Chemistry Center, Boston College, Chestnut Hill, MA 02467
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40
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Gray IJ, Kluger R. Chelation-controlled regioselectivity in the lanthanum-promoted monobenzoylation of monosaccharides in water. Carbohydr Res 2007; 342:1998-2002. [PMID: 17572400 DOI: 10.1016/j.carres.2007.05.024] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2007] [Revised: 05/16/2007] [Accepted: 05/19/2007] [Indexed: 11/30/2022]
Abstract
Monosaccharides are selectively converted to monobenzoates in a base-catalyzed reaction with benzoyl methyl phosphate (BzMP) and a lanthanum salt in water. Yields are reported in terms of formation of the ester, which competes with hydrolysis of BzMP, to give an estimate of the efficiency of the conversion of the sugar. Higher conversions can be achieved using excess reagent. Regioselectivity is influenced by the structure of the glycoside. For example, the reaction leads to different product distributions from alpha- and beta-anomers of the glycosides. The reaction combination provides a basis for efficient ester formation in specific geometric situations, providing a means of identification as well as modification.
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Affiliation(s)
- Ian James Gray
- Davenport Chemistry Laboratory, Department of Chemistry, University of Toronto, Toronto, Ontario M5S 3H6, Canada
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41
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Muramatsu W, Kawabata T. Regioselective acylation of 6-O-protected octyl β-d-glucopyranosides by DMAP catalysis. Tetrahedron Lett 2007. [DOI: 10.1016/j.tetlet.2007.05.098] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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42
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Coste G, Gerber-Lemaire S. A New Efficient Synthesis of Long-Chain Di- and Triaminopolyols. European J Org Chem 2006. [DOI: 10.1002/ejoc.200600276] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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43
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Compain P, Desvergnes V, Ollivier C, Robert F, Suzenet F, Barboiu M, Belmont P, Blériot Y, Bolze F, Bouquillon S, Bourguet E, Braida B, Constantieux T, Désaubry L, Dupont D, Gastaldi S, Jérome F, Legoupy S, Marat X, Migaud M, Moitessier N, Papot S, Peri F, Petit M, Py S, Schulz E, Tranoy-Opalinski I, Vauzeilles B, Vayron P, Vergnes L, Vidal S, Wilmouth S. Looking forward: a glance into the future of organic chemistry. NEW J CHEM 2006. [DOI: 10.1039/b601837h] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
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