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Gorenflos López JL, Dornan GL, Boback N, Neuenschwander M, Oder A, Kemnitz-Hassanin K, Schmieder P, Specker E, Asikoglu HC, Oberdanner C, Seyffarth C, von Kries JP, Lauster D, Hinderlich S, Hackenberger CPR. Small Molecules Targeting Human UDP-GlcNAc 2-Epimerase. Chembiochem 2023; 24:e202300555. [PMID: 37769151 DOI: 10.1002/cbic.202300555] [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: 08/08/2023] [Revised: 09/28/2023] [Accepted: 09/28/2023] [Indexed: 09/30/2023]
Abstract
Uridine diphosphate N-acetylglucosamine 2-epimerase (GNE) is a key enzyme in the sialic acid biosynthesis pathway. Sialic acids are primarily terminal carbohydrates on glycans and play fundamental roles in health and disease. In search of effective GNE inhibitors not based on a carbohydrate scaffold, we performed a high-throughput screening campaign of 68,640 drug-like small molecules against recombinant GNE using a UDP detection assay. We validated nine of the primary actives with an orthogonal real-time NMR assay and verified their IC50 values in the low micromolar to nanomolar range manually. Stability and solubility studies revealed three compounds for further evaluation. Thermal shift assays, analytical size exclusion, and interferometric scattering microscopy demonstrated that the GNE inhibitors acted on the oligomeric state of the protein. Finally, hydrogen-deuterium exchange mass spectrometry (HDX-MS) revealed which sections of GNE were shifted upon the addition of the inhibitors. In summary, we have identified three small molecules as GNE inhibitors with high potency in vitro, which serve as promising candidates to modulate sialic acid biosynthesis in more complex systems.
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Affiliation(s)
- Jacob L Gorenflos López
- Leibniz-Forschungsinstitut für Molekulare Pharmakologie (FMP), Robert-Rössle-Strasse 10, 13125, Berlin, Germany
- Humboldt Universität zu Berlin, Department Chemie, Brook-Taylor-Strasse 2, 12489, Berlin, Germany
| | - Gillian L Dornan
- Leibniz-Forschungsinstitut für Molekulare Pharmakologie (FMP), Robert-Rössle-Strasse 10, 13125, Berlin, Germany
| | - Nico Boback
- Freie Universität Berlin, Institut für Pharmazie, Biopharmazeutika, Kelchstr. 31, 12169, Berlin, Germany
| | - Martin Neuenschwander
- Leibniz-Forschungsinstitut für Molekulare Pharmakologie (FMP), Robert-Rössle-Strasse 10, 13125, Berlin, Germany
| | - Andreas Oder
- Leibniz-Forschungsinstitut für Molekulare Pharmakologie (FMP), Robert-Rössle-Strasse 10, 13125, Berlin, Germany
| | - Kristin Kemnitz-Hassanin
- Leibniz-Forschungsinstitut für Molekulare Pharmakologie (FMP), Robert-Rössle-Strasse 10, 13125, Berlin, Germany
| | - Peter Schmieder
- Leibniz-Forschungsinstitut für Molekulare Pharmakologie (FMP), Robert-Rössle-Strasse 10, 13125, Berlin, Germany
| | - Edgar Specker
- Leibniz-Forschungsinstitut für Molekulare Pharmakologie (FMP), Robert-Rössle-Strasse 10, 13125, Berlin, Germany
| | - Hatice Ceyda Asikoglu
- Leibniz-Forschungsinstitut für Molekulare Pharmakologie (FMP), Robert-Rössle-Strasse 10, 13125, Berlin, Germany
- Berliner Hochschule für Technik (BHT), Seestrasse 64, 13347, Berlin, Germany
| | | | - Carola Seyffarth
- Leibniz-Forschungsinstitut für Molekulare Pharmakologie (FMP), Robert-Rössle-Strasse 10, 13125, Berlin, Germany
| | - Jens Peter von Kries
- Leibniz-Forschungsinstitut für Molekulare Pharmakologie (FMP), Robert-Rössle-Strasse 10, 13125, Berlin, Germany
| | - Daniel Lauster
- Freie Universität Berlin, Institut für Pharmazie, Biopharmazeutika, Kelchstr. 31, 12169, Berlin, Germany
| | - Stephan Hinderlich
- Berliner Hochschule für Technik (BHT), Seestrasse 64, 13347, Berlin, Germany
| | - Christian P R Hackenberger
- Leibniz-Forschungsinstitut für Molekulare Pharmakologie (FMP), Robert-Rössle-Strasse 10, 13125, Berlin, Germany
- Humboldt Universität zu Berlin, Department Chemie, Brook-Taylor-Strasse 2, 12489, Berlin, Germany
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2
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Abuduaini T, Li S, Roy V, Agrofoglio LA, Martin OR, Nicolas C. Tunable Approach to C-Linked Analogs of Glycosamines. J Org Chem 2022; 87:13396-13405. [PMID: 36082689 DOI: 10.1021/acs.joc.2c01650] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The synthesis of (1R)-2-amino-2-deoxy-β-l-gulopyranosyl benzene and the α and β forms of 2-amino-2-deoxy-l-idopyranosyl benzene derivatives was accomplished through stereospecific addition of tributylstannyllithium to readily available (SR)- or (SS)-N-tert-butanesulfinyl-arabinofuranosylamine building blocks, followed by stereoretentive Pd-catalyzed Migita-Kosugi-Stille cross-coupling, stereoselective reduction, and an activation-cyclization strategy. Application of this methodology paves the way to new three-dimensional chemical space and preparation of unknown (non-natural) and complex 2-amino-2-deoxy sugars of biological interest.
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Affiliation(s)
- Tuniyazi Abuduaini
- Institut de Chimie Organique et Analytique, UMR CNRS 7311, Université d'Orléans, Rue de Chartres, BP 6759, 45067 Orléans Cedex 2, France
| | - Sizhe Li
- Institut de Chimie Organique et Analytique, UMR CNRS 7311, Université d'Orléans, Rue de Chartres, BP 6759, 45067 Orléans Cedex 2, France
| | - Vincent Roy
- Institut de Chimie Organique et Analytique, UMR CNRS 7311, Université d'Orléans, Rue de Chartres, BP 6759, 45067 Orléans Cedex 2, France
| | - Luigi A Agrofoglio
- Institut de Chimie Organique et Analytique, UMR CNRS 7311, Université d'Orléans, Rue de Chartres, BP 6759, 45067 Orléans Cedex 2, France
| | - Olivier R Martin
- Institut de Chimie Organique et Analytique, UMR CNRS 7311, Université d'Orléans, Rue de Chartres, BP 6759, 45067 Orléans Cedex 2, France
| | - Cyril Nicolas
- Institut de Chimie Organique et Analytique, UMR CNRS 7311, Université d'Orléans, Rue de Chartres, BP 6759, 45067 Orléans Cedex 2, France
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3
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Tran TV, Désiré J, Auberger N, Blériot Y. Stereoselective Synthesis of 1- C-Diethylphosphonomethyl and -difluoromethyl Iminosugars from Sugar Lactams. J Org Chem 2022; 87:7581-7585. [PMID: 35584044 DOI: 10.1021/acs.joc.2c00835] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A strategy allowing the straightforward synthesis of 1-C-phosphonomethyl and 1-C-phosphonodifluoromethyl iminosugars is reported. Conversion of sugar lactams to the corresponding imines with Schwartz's reagent followed by their reaction with LiCH2P(O)(OEt)2 and LiCF2P(O)(OEt)2 stereoselectively afforded the 1,2-cis and 1,2-trans glycosyl phosphonates, respectively, in modest to good yields. Application of this methodology to C-2 orthogonally protected sugar lactams paved the way to 2-acetamido- and 2-deoxy-1-C-phosphonomethyl iminosugars.
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Affiliation(s)
- Thanh Van Tran
- Université de Poitiers, IC2MP, UMR CNRS 7285, Equipe "OrgaSynth", Groupe Glycochimie 4 rue Michel Brunet, 86073 Poitiers cedex 9, France
| | - Jérôme Désiré
- Université de Poitiers, IC2MP, UMR CNRS 7285, Equipe "OrgaSynth", Groupe Glycochimie 4 rue Michel Brunet, 86073 Poitiers cedex 9, France
| | - Nicolas Auberger
- Université de Poitiers, IC2MP, UMR CNRS 7285, Equipe "OrgaSynth", Groupe Glycochimie 4 rue Michel Brunet, 86073 Poitiers cedex 9, France
| | - Yves Blériot
- Université de Poitiers, IC2MP, UMR CNRS 7285, Equipe "OrgaSynth", Groupe Glycochimie 4 rue Michel Brunet, 86073 Poitiers cedex 9, France
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4
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Oka N, Mori A, Suzuki K, Ando K. Stereoselective Synthesis of Ribofuranoid exo-Glycals by One-Pot Julia Olefination Using Ribofuranosyl Sulfones. J Org Chem 2021; 86:657-673. [PMID: 33225690 DOI: 10.1021/acs.joc.0c02297] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
One-pot Julia olefination using ribofuranosyl sulfones is described. The α-anomers of the ribofuranosyl sulfones were synthesized with complete α-selectivity via the glycosylation of heteroarylthiols using ribofuranosyl iodides as glycosyl donors and the subsequent oxidation of the resulting heteroaryl 1-thioribofuranosides with magnesium monoperphthalate (MMPP). The Julia olefination of the α-ribofuranosyl sulfones with aldehydes proceeded smoothly in one pot to afford the thermodynamically less stable (E)-exo-glycals with modest-to-excellent stereoselectivity (up to E/Z = 94:6) under the optimized conditions. The E selectivity was especially high for aromatic aldehydes. In contrast, the (Z)-exo-glycal was obtained as the main product with low stereoselectivity when the corresponding β-ribofuranosyl sulfone was used (E/Z = 41:59). The remarkable impact of the anomeric configuration of the ribofuranosyl sulfones on the stereoselectivity of the Julia olefination has been rationalized using density functional theory (DFT) calculations. The protected ribose moiety of the resulting exo-glycals induced completely α-selective cyclopropanation on the exocyclic carbon-carbon double bond via the Simmons-Smith-Furukawa reaction. The 2-cyanoethyl group was found to be useful for the protection of the exo-glycals, as it could be removed without affecting the exocyclic C═C bond.
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Affiliation(s)
- Natsuhisa Oka
- Institute for Glyco-core Research (iGCORE), Tokai National Higher Education and Research System Furo-cho, Gifu University, Chikusa-ku, Nagoya 464-8601, Japan
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5
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Kerner L, Kosma P. Synthesis of C-glycosyl phosphonate derivatives of 4-amino-4-deoxy-α-ʟ-arabinose. Beilstein J Org Chem 2020; 16:9-14. [PMID: 31976011 PMCID: PMC6964659 DOI: 10.3762/bjoc.16.2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2019] [Accepted: 12/06/2019] [Indexed: 01/13/2023] Open
Abstract
The incorporation of basic substituents into the structurally conserved domains of cell wall lipopolysaccharides has been identified as a major mechanism contributing to antimicrobial resistance of Gram-negative pathogenic bacteria. Inhibition of the corresponding enzymatic steps, specifically the transfer of 4-amino-4-deoxy-ʟ-arabinose, would thus restore the activity of cationic antimicrobial peptides and several antimicrobial drugs. C-glycosidically-linked phospholipid derivatives of 4-amino-4-deoxy-ʟ-arabinose have been prepared as hydrolytically stable and chain-shortened analogues of the native undecaprenyl donor. The C-phosphonate unit was installed via a Wittig reaction of benzyl-protected 1,5-arabinonic acid lactone with the lithium salt of dimethyl methylphosphonate followed by an elimination step of the resulting hemiketal, leading to the corresponding exo- and endo-glycal derivatives. The ensuing selective monodemethylation and hydrogenolysis of the benzyl groups and reduction of the 4-azido group gave the α-ʟ-anomeric arabino- and ribo-configured methyl phosphonate esters. In addition, the monomethyl phosphonate glycal intermediates were converted into n-octyl derivatives followed by subsequent selective removal of the methyl phosphonate ester group and hydrogenation to give the octylphosphono derivatives. These intermediates will be of value for their future conversion into transition state analogues as well as for the introduction of various lipid extensions at the anomeric phosphonate moiety.
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Affiliation(s)
- Lukáš Kerner
- University of Natural Resources and Life Sciences, Vienna Department of Chemistry, Muthgasse 18, A-1190 Vienna, Austria
| | - Paul Kosma
- University of Natural Resources and Life Sciences, Vienna Department of Chemistry, Muthgasse 18, A-1190 Vienna, Austria
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6
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Hemiketal‐Keto Tautomerism in 2‐Deoxy‐δ‐lactones Mediated by 2‐Lithiothiazole in Solution State: A Formal Synthesis of DAH, Kamusol and Their
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Epimers. ASIAN J ORG CHEM 2019. [DOI: 10.1002/ajoc.201900407] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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7
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8
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Pascolutti M, Dirr L, Guillon P, Van Den Bergh A, Ve T, Thomson RJ, von Itzstein M. Structural Insights into Human Parainfluenza Virus 3 Hemagglutinin-Neuraminidase Using Unsaturated 3- N-Substituted Sialic Acids as Probes. ACS Chem Biol 2018; 13:1544-1550. [PMID: 29693380 DOI: 10.1021/acschembio.8b00150] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
A novel approach to human parainfluenza virus 3 (hPIV-3) inhibitor design has been evaluated by targeting an unexplored pocket within the active site region of the hemagglutinin-neuraminidase (HN) of the virus that is normally occluded upon ligand engagement. To explore this opportunity, we developed a highly efficient route to introduce nitrogen-based functionalities at the naturally unsubstituted C-3 position on the neuraminidase inhibitor template N-acyl-2,3-dehydro-2-deoxy-neuraminic acid ( N-acyl-Neu2en), via a regioselective 2,3-bromoazidation. Introduction of triazole substituents at C-3 on this template provided compounds with low micromolar inhibition of hPIV-3 HN neuraminidase activity, with the most potent having 48-fold improved potency over the corresponding C-3 unsubstituted analogue. However, the C-3-triazole N-acyl-Neu2en derivatives were significantly less active against the hemagglutinin function of the virus, with high micromolar IC50 values determined, and showed insignificant in vitro antiviral activity. Given the different pH optima of the HN protein's neuraminidase (acidic pH) and hemagglutinin (neutral pH) functions, the influence of pH on inhibitor binding was examined using X-ray crystallography and STD NMR spectroscopy, providing novel insights into the multifunctionality of hPIV-3 HN. While the 3-phenyltriazole- N-isobutyryl-Neu2en derivative could bind HN at pH 4.6, suitable for neuraminidase inhibition, at neutral pH binding of the inhibitor was substantially reduced. Importantly, this study clearly demonstrates for the first time that potent inhibition of HN neuraminidase activity is not necessarily directly correlated with a strong antiviral activity, and suggests that strong inhibition of the hemagglutinin function of hPIV HN is crucial for potent antiviral activity. This highlights the importance of designing hPIV inhibitors that primarily target the receptor-binding function of hPIV HN.
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Affiliation(s)
- Mauro Pascolutti
- Institute for Glycomics, Griffith University, Gold Coast Campus, Queensland 4222, Australia
| | - Larissa Dirr
- Institute for Glycomics, Griffith University, Gold Coast Campus, Queensland 4222, Australia
| | - Patrice Guillon
- Institute for Glycomics, Griffith University, Gold Coast Campus, Queensland 4222, Australia
| | - Annelies Van Den Bergh
- Institute for Glycomics, Griffith University, Gold Coast Campus, Queensland 4222, Australia
| | - Thomas Ve
- Institute for Glycomics, Griffith University, Gold Coast Campus, Queensland 4222, Australia
| | - Robin J. Thomson
- Institute for Glycomics, Griffith University, Gold Coast Campus, Queensland 4222, Australia
| | - Mark von Itzstein
- Institute for Glycomics, Griffith University, Gold Coast Campus, Queensland 4222, Australia
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9
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1-C-phosphonomethyl- and 1-C-difluorophosphonomethyl-1,4-imino-l-arabinitols as Galf transferase inhibitors: A comparison. Carbohydr Res 2018; 461:45-50. [DOI: 10.1016/j.carres.2018.03.009] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2018] [Revised: 03/09/2018] [Accepted: 03/16/2018] [Indexed: 12/11/2022]
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10
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Mébarki K, Gavel M, Heis F, Joosten AYP, Lecourt T. Carbene-Mediated Quaternarization of the Anomeric Position of Carbohydrates: Synthesis of Allylic Ketopyranosides, Access to the Missing α-Gluco and β-Manno Stereoisomers, and Preparation of Quaternary 2-Deoxy 2-Acetamido Sugars. J Org Chem 2017; 82:9030-9037. [DOI: 10.1021/acs.joc.7b01493] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Affiliation(s)
- Kévin Mébarki
- Normandie Univ, INSA Rouen, UNIROUEN, CNRS, COBRA UMR 6014, 76000 Rouen, France
| | - Marine Gavel
- Normandie Univ, INSA Rouen, UNIROUEN, CNRS, COBRA UMR 6014, 76000 Rouen, France
| | - Floriane Heis
- Normandie Univ, INSA Rouen, UNIROUEN, CNRS, COBRA UMR 6014, 76000 Rouen, France
| | | | - Thomas Lecourt
- Normandie Univ, INSA Rouen, UNIROUEN, CNRS, COBRA UMR 6014, 76000 Rouen, France
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11
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Hinderlich S, Tauber R, Bertozzi CR, Hackenberger CPR. Werner Reutter: A Visionary Pioneer in Molecular Glycobiology. Chembiochem 2017. [DOI: 10.1002/cbic.201700277] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Stephan Hinderlich
- Beuth Hochschule für Technik Berlin; Fachbereich Life Sciences and Technology; Seestrasse 64 13347 Berlin Germany
| | - Rudolf Tauber
- Charité-Universitätsmedizin Berlin; Institut für Laboratoriumsmedizin; Klinische Chemie und Pathobiochemie; Augustenburger Platz 1 13353 Berlin Germany
| | - Carolyn R. Bertozzi
- Bertozzi Lab; Department of Chemistry; University of California; 380 Roth Way MC: 5080 Stanford CA 94305-4401 USA
| | - Christian P. R. Hackenberger
- Leibniz-Forschungsinstitut für Molekulare Pharmakologie FMP; Department of Chemical Biology; Robert-Roessle-Strasse 10 13125 Berlin Germany
- Humboldt Universität zu Berlin; Institut für Chemie; Brook-Taylor-Strasse 2 12489 Berlin Germany
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12
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Hinderlich S, Neuenschwander M, Wratil PR, Oder A, Lisurek M, Nguyen LD, von Kries JP, Hackenberger CPR. Small Molecules Targeting Human N-Acetylmannosamine Kinase. Chembiochem 2017; 18:1279-1285. [PMID: 28346741 DOI: 10.1002/cbic.201700066] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2017] [Indexed: 12/19/2022]
Abstract
N-Acetylmannosamine kinase (MNK) plays a key role in the biosynthesis of sialic acids and glycosylation of proteins. Sialylated glycoconjugates affect a large number of biological processes, including immune modulation and cancer transformation. In search of effective inhibitors of MNK we applied high-throughput screening of drug-like small molecules. By applying different orthogonal assays for their validation we identified four potential MNK-specific inhibitors with IC50 values in the low-micromolar range. Molecular modelling of the inhibitors into the active site of MNK supports their binding to the sugar or the ATP-binding pocket of the enzyme or both. These compounds are promising for downregulation of the sialic acid content of glycoconjugates and for studying the functional contribution of sialic acids to disease development.
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Affiliation(s)
- Stephan Hinderlich
- Beuth Hochschule für Technik Berlin, Seestrasse 64, 13347, Berlin, Germany
| | - Martin Neuenschwander
- Leibniz-Institut für Molekulare Pharmakologie, Robert-Roessle-Strasse 10, 13125, Berlin, Germany
| | - Paul R Wratil
- Institut für Laboratoriumsmedizin, Klinische Chemie und Pathobiochemie, Charité-Universitätsmedizin Berlin, Arnimalee 22, 14195, Berlin, Germany
| | - Andreas Oder
- Leibniz-Institut für Molekulare Pharmakologie, Robert-Roessle-Strasse 10, 13125, Berlin, Germany
| | - Michael Lisurek
- Leibniz-Institut für Molekulare Pharmakologie, Robert-Roessle-Strasse 10, 13125, Berlin, Germany
| | - Long D Nguyen
- Institut für Laboratoriumsmedizin, Klinische Chemie und Pathobiochemie, Charité-Universitätsmedizin Berlin, Arnimalee 22, 14195, Berlin, Germany
| | - Jens P von Kries
- Leibniz-Institut für Molekulare Pharmakologie, Robert-Roessle-Strasse 10, 13125, Berlin, Germany
| | - Christian P R Hackenberger
- Leibniz-Institut für Molekulare Pharmakologie, Robert-Roessle-Strasse 10, 13125, Berlin, Germany.,Humboldt Universität zu Berlin, Department Chemie, Brook-Taylor-Strasse 2, 12489, Berlin, Germany
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13
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Aretz J, Wratil PR, Wamhoff EC, Nguyen HG, Reutter W, Rademacher C. Fragment screening of N-acetylmannosamine kinase reveals noncarbohydrate inhibitors. CAN J CHEM 2016. [DOI: 10.1139/cjc-2015-0603] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Many biological processes from infection to tumor immune evasion are controlled by cell surface sialylation. To gather further insight into these processes, methods to alter cell surface sialylation are required. One way to achieve this is inhibiting the key enzyme of sialic acid de novo biosynthesis, the intracellular bifunctional UDP-N-acetylglucosamine epimerase/N-acetylmannosamine kinase (GNE/MNK). Here, we present low molecular weight inhibitors of MNK activity based on picolinic acid derivatives. They were identified in a fragment screening using 19F NMR and validated in a biochemical inhibition assay followed by a structure–activity relationship analysis and docking. The optimized compound 6-carbamoylpicolinic acid inhibits MNK with a double-digit micromolar affinity. Its low molecular weight (166 Da) renders this picolinic acid derivative an exquisite starting point for the development of high-affinity MNK inhibitors, which may serve as molecular probes or lead candidates in future.
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Affiliation(s)
- Jonas Aretz
- Department of Biomolecular Systems, Max Planck Institute of Colloids and Interfaces, Am Mühlenberg 1, Potsdam 14424, Germany
- Department of Biology, Chemistry, and Pharmacy, Freie Universität Berlin, Berlin, Germany
| | - Paul Robin Wratil
- Institute of Laboratory Medicine, Clinical Chemistry and Pathobiochemistry, Charité — Universitätsmedizin Berlin, Germany
| | - Eike-Christian Wamhoff
- Department of Biomolecular Systems, Max Planck Institute of Colloids and Interfaces, Am Mühlenberg 1, Potsdam 14424, Germany
- Department of Biology, Chemistry, and Pharmacy, Freie Universität Berlin, Berlin, Germany
| | - Hoang Giang Nguyen
- Institute of Laboratory Medicine, Clinical Chemistry and Pathobiochemistry, Charité — Universitätsmedizin Berlin, Germany
| | - Werner Reutter
- Institute of Laboratory Medicine, Clinical Chemistry and Pathobiochemistry, Charité — Universitätsmedizin Berlin, Germany
| | - Christoph Rademacher
- Department of Biomolecular Systems, Max Planck Institute of Colloids and Interfaces, Am Mühlenberg 1, Potsdam 14424, Germany
- Department of Biology, Chemistry, and Pharmacy, Freie Universität Berlin, Berlin, Germany
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Wratil PR, Horstkorte R, Reutter W. Metabolic Glycoengineering with N-Acyl Side Chain Modified Mannosamines. Angew Chem Int Ed Engl 2016; 55:9482-512. [PMID: 27435524 DOI: 10.1002/anie.201601123] [Citation(s) in RCA: 90] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2016] [Indexed: 12/14/2022]
Abstract
In metabolic glycoengineering (MGE), cells or animals are treated with unnatural derivatives of monosaccharides. After entering the cytosol, these sugar analogues are metabolized and subsequently expressed on newly synthesized glycoconjugates. The feasibility of MGE was first discovered for sialylated glycans, by using N-acyl-modified mannosamines as precursor molecules for unnatural sialic acids. Prerequisite is the promiscuity of the enzymes of the Roseman-Warren biosynthetic pathway. These enzymes were shown to tolerate specific modifications of the N-acyl side chain of mannosamine analogues, for example, elongation by one or more methylene groups (aliphatic modifications) or by insertion of reactive groups (bioorthogonal modifications). Unnatural sialic acids are incorporated into glycoconjugates of cells and organs. MGE has intriguing biological consequences for treated cells (aliphatic MGE) and offers the opportunity to visualize the topography and dynamics of sialylated glycans in vitro, ex vivo, and in vivo (bioorthogonal MGE).
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Affiliation(s)
- Paul R Wratil
- Institut für Laboratoriumsmedizin, Klinische Chemie und Pathobiochemie, Charité-Universitätsmedizin Berlin, Arnimallee 22, 14195, Berlin, Germany.
| | - Rüdiger Horstkorte
- Institut für Physiologische Chemie, Martin-Luther-Universität Halle-Wittenberg, Hollystrasse 1, 06114, Halle, Germany.
| | - Werner Reutter
- Institut für Laboratoriumsmedizin, Klinische Chemie und Pathobiochemie, Charité-Universitätsmedizin Berlin, Arnimallee 22, 14195, Berlin, Germany
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15
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Wratil PR, Horstkorte R, Reutter W. Metabolisches Glykoengineering mitN-Acyl-Seiten- ketten-modifizierten Mannosaminen. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201601123] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Affiliation(s)
- Paul R. Wratil
- Institut für Laboratoriumsmedizin, Klinische Chemie und Pathobiochemie; Charité - Universitätsmedizin Berlin; Arnimallee 22 14195 Berlin Deutschland
| | - Rüdiger Horstkorte
- Institut für Physiologische Chemie; Martin-Luther-Universität Halle-Wittenberg; Hollystraße 1 06114 Halle Deutschland
| | - Werner Reutter
- Institut für Laboratoriumsmedizin, Klinische Chemie und Pathobiochemie; Charité - Universitätsmedizin Berlin; Arnimallee 22 14195 Berlin Deutschland
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16
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Nieto-Garcia O, Wratil PR, Nguyen LD, Böhrsch V, Hinderlich S, Reutter W, Hackenberger CPR. Inhibition of the key enzyme of sialic acid biosynthesis by C6-Se modified N-acetylmannosamine analogs. Chem Sci 2016; 7:3928-3933. [PMID: 30155038 PMCID: PMC6013775 DOI: 10.1039/c5sc04082e] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2015] [Accepted: 02/13/2016] [Indexed: 01/11/2023] Open
Abstract
Synthetically accessible C6-analogs of N-acetylmannosamine (ManNAc) were tested as potential inhibitors of the bifunctional UDP-N-acetylglucosamine-2-epimerase/N-acetylmannosamine kinase (GNE/MNK), the key enzyme of sialic acid biosynthesis. Enzymatic experiments revealed that the modification introduced at the C6 saccharide position strongly influences the inhibitory potency. A C6-ManNAc diselenide dimer showed the strongest kinase inhibition in the low μM range among all the substrates tested and successfully reduced cell surface sialylation in Jurkat cells.
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Affiliation(s)
- Olaia Nieto-Garcia
- Leibniz-Institut für Molekulare Pharmakologie , Robert-Roessle-Strasse 10 , 13125 Berlin , Germany
| | - Paul R Wratil
- Institut für Laboratoriumsmedizin , Klinische Chemie und Pathobiochemie , Charié-Universitätsmedizin Berlin , Arnimalee 22 , 14195 Berlin , Germany .
| | - Long D Nguyen
- Institut für Laboratoriumsmedizin , Klinische Chemie und Pathobiochemie , Charié-Universitätsmedizin Berlin , Arnimalee 22 , 14195 Berlin , Germany .
| | - Verena Böhrsch
- Leibniz-Institut für Molekulare Pharmakologie , Robert-Roessle-Strasse 10 , 13125 Berlin , Germany
| | - Stephan Hinderlich
- Beuth Hochschule für Technik Berlin , Department Life Sciences & Technology , Seestrase 64 , 13347 Berlin , Germany .
| | - Werner Reutter
- Institut für Laboratoriumsmedizin , Klinische Chemie und Pathobiochemie , Charié-Universitätsmedizin Berlin , Arnimalee 22 , 14195 Berlin , Germany .
| | - Christian P R Hackenberger
- Leibniz-Institut für Molekulare Pharmakologie , Robert-Roessle-Strasse 10 , 13125 Berlin , Germany
- Humboldt Universität zu Berlin , Department Chemie , Brook-Taylor-Strasse 2 , 12489 , Berlin , Germany .
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17
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Ghirardello M, de Las Rivas M, Lacetera A, Delso I, Lira-Navarrete E, Tejero T, Martín-Santamaría S, Hurtado-Guerrero R, Merino P. Glycomimetics Targeting Glycosyltransferases: Synthetic, Computational and Structural Studies of Less-Polar Conjugates. Chemistry 2016; 22:7215-24. [PMID: 27071848 DOI: 10.1002/chem.201600467] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2016] [Indexed: 12/11/2022]
Abstract
The Leloir donors are nucleotide sugars essential for a variety of glycosyltransferases (GTs) involved in the transfer of a carbohydrate to an acceptor substrate, typically a protein or an oligosaccharide. A series of less-polar nucleotide sugar analogues derived from uridine have been prepared by replacing one phosphate unit with an alkyl chain. The methodology is based on the radical hydrophosphonylation of alkenes, which allows coupling of allyl glycosyl compounds with a phosphate unit suitable for conjugation to uridine. Two of these compounds, the GalNAc and galactose derivatives, were further tested on a model GT, such as GalNAc-T2 (an important GT widely distributed in human tissues), to probe that both compounds bound in the medium-high micromolar range. The crystal structure of GalNAc-T2 with the galactose derivative traps the enzyme in an inactive form; this suggests that compounds only containing the β-phosphate could be efficient ligands for the enzyme. Computational studies with GalNAc-T2 corroborate these findings and provide further insights into the mechanism of the catalytic cycle of this family of enzymes.
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Affiliation(s)
- Mattia Ghirardello
- Departamento de Síntesis y Estructura de Biomoléculas, Instituto de Síntesis Química y Catálisis Homogénea (ISQCH), Universidad de Zaragoza, CSIC, 50009, Zaragoza, Aragón, Spain
| | - Matilde de Las Rivas
- Instituto de Biocomputación y Fisica de Sistemas Complejos (BIFI), BIFI-IQFR (CSIC) Joint Unit, Universidad de Zaragoza, 50009, Zaragoza, Spain
| | - Alessandra Lacetera
- Departamento de Biología Físico-Química, Centro de Investigaciones Biológicas, CIB-CSIC, Ramiro de Maeztu, 9, 28040, Madrid, Spain
| | - Ignacio Delso
- Departamento de Síntesis y Estructura de Biomoléculas, Instituto de Síntesis Química y Catálisis Homogénea (ISQCH), Universidad de Zaragoza, CSIC, 50009, Zaragoza, Aragón, Spain
- Servicio de Resonancia Magnética Nuclear, Centro de Química y Materiales de Aragón (CEQMA), Universidad de Zaragoza, CSIC, Campus San Francisco, 50009, Zaragoza, Spain
| | - Erandi Lira-Navarrete
- Departamento de Síntesis y Estructura de Biomoléculas, Instituto de Síntesis Química y Catálisis Homogénea (ISQCH), Universidad de Zaragoza, CSIC, 50009, Zaragoza, Aragón, Spain
| | - Tomás Tejero
- Departamento de Síntesis y Estructura de Biomoléculas, Instituto de Síntesis Química y Catálisis Homogénea (ISQCH), Universidad de Zaragoza, CSIC, 50009, Zaragoza, Aragón, Spain
| | - Sonsoles Martín-Santamaría
- Departamento de Biología Físico-Química, Centro de Investigaciones Biológicas, CIB-CSIC, Ramiro de Maeztu, 9, 28040, Madrid, Spain.
| | - Ramón Hurtado-Guerrero
- Instituto de Biocomputación y Fisica de Sistemas Complejos (BIFI), BIFI-IQFR (CSIC) Joint Unit, Universidad de Zaragoza, 50009, Zaragoza, Spain.
- Fundación ARAID, 50018, Zaragoza, Spain.
- Instituto de Investigaciones Sanitarias de Aragón (IIS-A), Zaragoza, 50009, Spain.
| | - Pedro Merino
- Departamento de Síntesis y Estructura de Biomoléculas, Instituto de Síntesis Química y Catálisis Homogénea (ISQCH), Universidad de Zaragoza, CSIC, 50009, Zaragoza, Aragón, Spain.
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18
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Wang B, Xiong DC, Ye XS. Direct C–H Trifluoromethylation of Glycals by Photoredox Catalysis. Org Lett 2015; 17:5698-701. [DOI: 10.1021/acs.orglett.5b03016] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Bang Wang
- State
Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical
Sciences, and Center for Molecular and Translational Medicine, Peking University, Xue Yuan Road No. 38, Beijing 100191, China
| | - De-Cai Xiong
- State
Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical
Sciences, and Center for Molecular and Translational Medicine, Peking University, Xue Yuan Road No. 38, Beijing 100191, China
| | - Xin-Shan Ye
- State
Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical
Sciences, and Center for Molecular and Translational Medicine, Peking University, Xue Yuan Road No. 38, Beijing 100191, China
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19
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Wang S, Cuesta-Seijo JA, Striebeck A, Lafont D, Palcic MM, Vidal S. Design of Glycosyltransferase Inhibitors: Serine Analogues as Pyrophosphate Surrogates? Chempluschem 2015; 80:1525-1532. [DOI: 10.1002/cplu.201500282] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2015] [Indexed: 01/07/2023]
Affiliation(s)
- Shuai Wang
- Institut de Chimie et Biochimie Moléculaires et Supramoléculaires; Laboratoire de Chimie Organique 2-Glycochimie, UMR 5246; CNRS and Université Claude Bernard Lyon 1; 43 Boulevard du 11 Novembre 1918 69622 Villeurbanne France
| | | | | | - Dominique Lafont
- Institut de Chimie et Biochimie Moléculaires et Supramoléculaires; Laboratoire de Chimie Organique 2-Glycochimie, UMR 5246; CNRS and Université Claude Bernard Lyon 1; 43 Boulevard du 11 Novembre 1918 69622 Villeurbanne France
| | - Monica M. Palcic
- Carlsberg Laboratory; Gamle Carlsberg Vej 10 1799 Copenhagen V Denmark
- Department of Biochemistry and Microbiology; University of Victoria; Victoria BC V8W 3P6 Canada
| | - Sébastien Vidal
- Institut de Chimie et Biochimie Moléculaires et Supramoléculaires; Laboratoire de Chimie Organique 2-Glycochimie, UMR 5246; CNRS and Université Claude Bernard Lyon 1; 43 Boulevard du 11 Novembre 1918 69622 Villeurbanne France
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20
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Wratil PR, Rigol S, Solecka B, Kohla G, Kannicht C, Reutter W, Giannis A, Nguyen LD. A novel approach to decrease sialic acid expression in cells by a C-3-modified N-acetylmannosamine. J Biol Chem 2014; 289:32056-32063. [PMID: 25278018 DOI: 10.1074/jbc.m114.608398] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022] Open
Abstract
Due to its position at the outermost of glycans, sialic acid is involved in a myriad of physiological and pathophysiological cell functions such as host-pathogen interactions, immune regulation, and tumor evasion. Inhibitors of cell surface sialylation could be a useful tool in cancer, immune, antibiotic, or antiviral therapy. In this work, four different C-3 modified N-acetylmannosamine analogs were tested as potential inhibitors of cell surface sialylation. Peracetylated 2-acetylamino-2-deoxy-3-O-methyl-D-mannose decreases cell surface sialylation in Jurkat cells in a dose-dependent manner up to 80%, quantified by flow cytometry and enzyme-linked lectin assays. High-performance liquid chromatography experiments revealed that not only the concentration of membrane bound but also of cytosolic sialic acid is reduced in treated cells. We have strong evidence that the observed reduction of sialic acid expression in cells is caused by the inhibition of the bifunctional enzyme UDP-GlcNAc-2-epimerase/ManNAc kinase. 2-Acetylamino-2-deoxy-3-O-methyl-D-mannose inhibits the human ManNAc kinase domain of the UDP-GlcNAc-2-epimerase/ManNAc kinase. Binding kinetics of the inhibitor and human N-acetylmannosamine kinase were evaluated using surface plasmon resonance. Specificity studies with human N-acetylglucosamine kinase and hexokinase IV indicated a high specificity of 2-acetylamino-2-deoxy-3-O-methyl-D-mannose for MNK. This substance represents a novel class of inhibitors of sialic acid expression in cells, targeting the key enzyme of sialic acid de novo biosynthesis.
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Affiliation(s)
- Paul R Wratil
- Institut für Laboratoriumsmedizin, Klinische Chemie, und Pathobiochemie, Charité-Universitätsmedizin Berlin, Campus Benjamin Franklin, Arnimallee 22, D-14195 Berlin-Dahlem
| | - Stephan Rigol
- Institut für Organische Chemie, Universität Leipzig, Fakultät für Chemie und Mineralogie, Johannisallee 29, D-04103 Leipzig, and
| | - Barbara Solecka
- Octapharma R&D, Molecular Biochemistry Berlin, Walther-Nernst-Strasse 3, D-12489 Berlin, Germany
| | - Guido Kohla
- Octapharma R&D, Molecular Biochemistry Berlin, Walther-Nernst-Strasse 3, D-12489 Berlin, Germany
| | - Christoph Kannicht
- Octapharma R&D, Molecular Biochemistry Berlin, Walther-Nernst-Strasse 3, D-12489 Berlin, Germany
| | - Werner Reutter
- Institut für Laboratoriumsmedizin, Klinische Chemie, und Pathobiochemie, Charité-Universitätsmedizin Berlin, Campus Benjamin Franklin, Arnimallee 22, D-14195 Berlin-Dahlem
| | - Athanassios Giannis
- Institut für Organische Chemie, Universität Leipzig, Fakultät für Chemie und Mineralogie, Johannisallee 29, D-04103 Leipzig, and.
| | - Long D Nguyen
- Institut für Laboratoriumsmedizin, Klinische Chemie, und Pathobiochemie, Charité-Universitätsmedizin Berlin, Campus Benjamin Franklin, Arnimallee 22, D-14195 Berlin-Dahlem,.
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21
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Dumitrescu L, Eppe G, Tikad A, Pan W, El Bkassiny S, Gurcha SS, Ardá A, Jiménez-Barbero J, Besra GS, Vincent SP. Selectfluor and NFSI exo-glycal fluorination strategies applied to the enhancement of the binding affinity of galactofuranosyltransferase GlfT2 inhibitors. Chemistry 2014; 20:15208-15. [PMID: 25251918 DOI: 10.1002/chem.201404180] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2014] [Indexed: 12/31/2022]
Abstract
Two complementary methods for the synthesis of fluorinated exo-glycals have been developed, for which previously no general reaction had been available. First, a Selectfluor-mediated fluorination was optimized after detailed analysis of all the reaction parameters. A dramatic effect of molecular sieves on the course of the reaction was observed. The reaction was generalized with a set of biologically relevant furanosides and pyranosides. A second direct approach involving carbanionic chemistry and the use of N-fluorobenzenesulfonimide (NFSI) was performed and this method gave better diastereoselectivities. Assignment of the Z/E configuration of all the fluorinated exo-glycals was achieved based on the results of HOESY experiments. Furthermore, fluorinated exo-glycal analogues of UDP-galactofuranose were prepared and assayed against GlfT2, which is a key enzyme involved in the cell-wall biosynthesis of major pathogens. The fluorinated exo-glycals proved to be potent inhibitors as compared with a series of C-glycosidic analogues of UDP-Galf, thus demonstrating the double beneficial effect of the exocyclic enol ether functionality and the fluorine atom.
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Affiliation(s)
- Lidia Dumitrescu
- University of Namur (UNamur), Département de Chimie, Laboratoire de Chimie Bio-Organique rue de Bruxelles 61, B-5000 Namur (Belgium), Fax: (+32) 81-72-45-17
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22
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Zhang F, Wang L, Zhang C, Zhao Y. Novel regio- and stereoselective phosphonyl radical addition to glycals promoted by Mn(ii)–air: syntheses of 1,2-dideoxy 2-C-diphenylphosphinylglycopyranosides. Chem Commun (Camb) 2014; 50:2046-8. [DOI: 10.1039/c3cc48806c] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The novel Mn(ii)–air promoted radical reaction of diphenylphosphine oxide with various glycals in excellent regio- and stereoselectivities generated 1,2-dideoxy-2-C-diphenylphosphinylglycopyranosides.
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Affiliation(s)
- Fuyi Zhang
- The College of Chemistry and Molecular Engineering
- The Key Lab of Chemical Biology and Organic Chemistry
- Zhengzhou University
- Zhengzhou 450052, China
| | - Liming Wang
- The College of Chemistry and Molecular Engineering
- The Key Lab of Chemical Biology and Organic Chemistry
- Zhengzhou University
- Zhengzhou 450052, China
| | - Cui Zhang
- The College of Chemistry and Molecular Engineering
- The Key Lab of Chemical Biology and Organic Chemistry
- Zhengzhou University
- Zhengzhou 450052, China
| | - Yufen Zhao
- The College of Chemistry and Molecular Engineering
- The Key Lab of Chemical Biology and Organic Chemistry
- Zhengzhou University
- Zhengzhou 450052, China
- College of Chemistry and Chemical Engineering
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23
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Xu Y, Brenning B, Clifford A, Vollmer D, Bearss J, Jones C, McCarthy V, Shi C, Wolfe B, Aavula B, Warner S, Bearss DJ, McCullar MV, Schuch R, Pelzek A, Bhaskaran SS, Stebbins CE, Goldberg AR, Fischetti VA, Vankayalapati H. Discovery of Novel Putative Inhibitors of UDP-GlcNAc 2-Epimerase as Potent Antibacterial Agents. ACS Med Chem Lett 2013; 4:1142-1147. [PMID: 24443700 DOI: 10.1021/ml4001936] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
Abstract
We present the discovery and optimization of a novel series of inhibitors of bacterial UDP-N-acetylglucosamine 2-epimerase (called 2-epimerase in this paper). Starting from virtual screening hits, the activity of various inhibitory molecules was optimized using a combination of structure-based and rational design approaches. We successfully designed and identified a 2-epimerase inhibitor (compound 12-ES-Na, that we named Epimerox) which blocked the growth of methicillin-resistant Staphylococcus aureus (MRSA) at 3.9 μM MIC (minimum inhibitory concentration) and showed potent broad-range activity against all Gram-positive bacteria that were tested. Additionally a microplate coupled assay was performed to further confirm that the 2-epimerase inhibition of Epimerox was through a target-specific mechanism. Furthermore, Epimerox demonstrated in vivo efficacy and had a pharmacokinetic profile that is consonant with it being developed into a promising new antibiotic agent for treatment of infections caused by Gram-positive bacteria.
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Affiliation(s)
- Yong Xu
- Astex Pharmaceuticals, Inc. (formerly known as SuperGen, Inc.), 4140 Dublin Boulevard, Suite 200, Dublin, California 94568, United States
| | - Benjamin Brenning
- Astex Pharmaceuticals, Inc. (formerly known as SuperGen, Inc.), 4140 Dublin Boulevard, Suite 200, Dublin, California 94568, United States
| | - Adrianne Clifford
- Astex Pharmaceuticals, Inc. (formerly known as SuperGen, Inc.), 4140 Dublin Boulevard, Suite 200, Dublin, California 94568, United States
| | - David Vollmer
- Astex Pharmaceuticals, Inc. (formerly known as SuperGen, Inc.), 4140 Dublin Boulevard, Suite 200, Dublin, California 94568, United States
| | - Jared Bearss
- Astex Pharmaceuticals, Inc. (formerly known as SuperGen, Inc.), 4140 Dublin Boulevard, Suite 200, Dublin, California 94568, United States
| | - Carissa Jones
- Astex Pharmaceuticals, Inc. (formerly known as SuperGen, Inc.), 4140 Dublin Boulevard, Suite 200, Dublin, California 94568, United States
| | - Virgil McCarthy
- Astex Pharmaceuticals, Inc. (formerly known as SuperGen, Inc.), 4140 Dublin Boulevard, Suite 200, Dublin, California 94568, United States
| | - Chongtie Shi
- Astex Pharmaceuticals, Inc. (formerly known as SuperGen, Inc.), 4140 Dublin Boulevard, Suite 200, Dublin, California 94568, United States
| | - Bradley Wolfe
- Astex Pharmaceuticals, Inc. (formerly known as SuperGen, Inc.), 4140 Dublin Boulevard, Suite 200, Dublin, California 94568, United States
| | - Bhasker Aavula
- Astex Pharmaceuticals, Inc. (formerly known as SuperGen, Inc.), 4140 Dublin Boulevard, Suite 200, Dublin, California 94568, United States
| | - Steve Warner
- Astex Pharmaceuticals, Inc. (formerly known as SuperGen, Inc.), 4140 Dublin Boulevard, Suite 200, Dublin, California 94568, United States
| | - David J. Bearss
- Astex Pharmaceuticals, Inc. (formerly known as SuperGen, Inc.), 4140 Dublin Boulevard, Suite 200, Dublin, California 94568, United States
| | - Michael V. McCullar
- Astex Pharmaceuticals, Inc. (formerly known as SuperGen, Inc.), 4140 Dublin Boulevard, Suite 200, Dublin, California 94568, United States
| | - Raymond Schuch
- Laboratory
of Bacterial Pathogenesis and Immunology, The Rockefeller University, New
York, New York 10065, United States
| | - Adam Pelzek
- Laboratory
of Bacterial Pathogenesis and Immunology, The Rockefeller University, New
York, New York 10065, United States
| | - Shyam S. Bhaskaran
- Laboratory
of Bacterial Pathogenesis and Immunology, The Rockefeller University, New
York, New York 10065, United States
| | - C. Erec Stebbins
- Laboratory of Structural Microbiology, The Rockefeller University, New York, New York 10065, United States
| | - Allan R. Goldberg
- Astex Pharmaceuticals, Inc. (formerly known as SuperGen, Inc.), 4140 Dublin Boulevard, Suite 200, Dublin, California 94568, United States
| | - Vincent A. Fischetti
- Laboratory
of Bacterial Pathogenesis and Immunology, The Rockefeller University, New
York, New York 10065, United States
| | - Hariprasad Vankayalapati
- Astex Pharmaceuticals, Inc. (formerly known as SuperGen, Inc.), 4140 Dublin Boulevard, Suite 200, Dublin, California 94568, United States
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24
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Wang S, Cuesta-Seijo JA, Lafont D, Palcic MM, Vidal S. Design of glycosyltransferase inhibitors: pyridine as a pyrophosphate surrogate. Chemistry 2013; 19:15346-57. [PMID: 24108680 DOI: 10.1002/chem.201301871] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2013] [Revised: 07/25/2013] [Indexed: 12/12/2022]
Abstract
A series of ten glycosyltransferase inhibitors has been designed and synthesized by using pyridine as a pyrophosphate surrogate. The series was prepared by conjugation of carbohydrate, pyridine, and nucleoside building blocks by using a combination of glycosylation, the Staudinger-Vilarrasa amide-bond formation, and azide-alkyne click chemistry. The compounds were evaluated as inhibitors of five metal-dependent galactosyltransferases. Crystallographic analyses of three inhibitors complexed in the active site of one of the enzymes confirmed that the pyridine moiety chelates the Mn(2+) ion causing a slight displacement (2 Å) from its original position. The carbohydrate head group occupies a different position than in the natural uridine diphosphate (UDP)-Gal substrate with little interaction with the enzyme.
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Affiliation(s)
- Shuai Wang
- Institut de Chimie et Biochimie Moléculaires et Supramoléculaires, Laboratoire de Chimie Organique 2, Glycochimie, UMR 5246, CNRS and Université Claude Bernard Lyon 1, 43 Boulevard du 11 Novembre 1918, 6922 Villeurbanne (France), Fax: (+33) 472-448-109
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25
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Eppe G, Dumitrescu L, Pierrot O, Li T, Pan W, Vincent SP. A Novel Base-Induced Isomerization Gives Access to Unprecedented (E)-exo-Glycals. Chemistry 2013; 19:11547-52. [DOI: 10.1002/chem.201300969] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2013] [Indexed: 11/07/2022]
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26
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Dondoni A, Staderini S, Marra A. Efficiency of the Free-Radical Hydrophosphonylation of Alkenes: The Photoinduced Reaction of DimethylH-Phosphonate with Enopyranoses as an Exemplary Case. European J Org Chem 2013. [DOI: 10.1002/ejoc.201300780] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
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27
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Boultadakis-Arapinis M, Prost E, Gandon V, Lemoine P, Turcaud S, Micouin L, Lecourt T. Carbene-Mediated Functionalization of the Anomeric CH Bond of Carbohydrates: Scope and Limitations. Chemistry 2013; 19:6052-66. [DOI: 10.1002/chem.201203725] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2012] [Indexed: 11/06/2022]
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28
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Hinderlich S, Weidemann W, Yardeni T, Horstkorte R, Huizing M. UDP-GlcNAc 2-Epimerase/ManNAc Kinase (GNE): A Master Regulator of Sialic Acid Synthesis. Top Curr Chem (Cham) 2013; 366:97-137. [PMID: 23842869 DOI: 10.1007/128_2013_464] [Citation(s) in RCA: 68] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
UDP-N-acetylglucosamine 2-epimerase/N-acetylmannosamine kinase is the key enzyme of sialic acid biosynthesis in vertebrates. It catalyzes the first two steps of the cytosolic formation of CMP-N-acetylneuraminic acid from UDP-N-acetylglucosamine. In this review we give an overview of structure, biochemistry, and genetics of the bifunctional enzyme and its complex regulation. Furthermore, we will focus on diseases related to UDP-N-acetylglucosamine 2-epimerase/N-acetylmannosamine kinase.
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Affiliation(s)
- Stephan Hinderlich
- Department of Life Sciences and Technology, Beuth Hochschule für Technik Berlin, University of Applied Sciences, Berlin, Germany,
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29
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Martinez J, Nguyen LD, Hinderlich S, Zimmer R, Tauberger E, Reutter W, Saenger W, Fan H, Moniot S. Crystal structures of N-acetylmannosamine kinase provide insights into enzyme activity and inhibition. J Biol Chem 2012; 287:13656-65. [PMID: 22343627 DOI: 10.1074/jbc.m111.318170] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023] Open
Abstract
Sialic acids are essential components of membrane glycoconjugates. They are responsible for the interaction, structure, and functionality of all deuterostome cells and have major functions in cellular processes in health and diseases. The key enzyme of the biosynthesis of sialic acid is the bifunctional UDP-N-acetylglucosamine-2-epimerase/N-acetylmannosamine kinase that transforms UDP-N-acetylglucosamine to N-acetylmannosamine (ManNAc) followed by its phosphorylation to ManNAc 6-phosphate and has a direct impact on the sialylation of cell surface components. Here, we present the crystal structures of the human N-acetylmannosamine kinase (MNK) domain of UDP-N-acetylglucosamine-2-epimerase/N-acetylmannosamine kinase in complexes with ManNAc at 1.64 Å resolution, MNK·ManNAc·ADP (1.82 Å) and MNK·ManNAc 6-phosphate · ADP (2.10 Å). Our findings offer detailed insights in the active center of MNK and serve as a structural basis to design inhibitors. We synthesized a novel inhibitor, 6-O-acetyl-ManNAc, which is more potent than those previously tested. Specific inhibitors of sialic acid biosynthesis may serve to further study biological functions of sialic acid.
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Affiliation(s)
- Jacobo Martinez
- From the Institut für Chemie und Biochemie-Kristallographie, Freie Universität Berlin, Takustrasse 6, 14195 Berlin
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30
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Epoxidation of glycals with oxone–acetone–tetrabutylammonium hydrogen sulfate: a convenient access to simple β-d-glycosides and to α-d-mannosamine and d-talosamine donors. ACTA ACUST UNITED AC 2011. [DOI: 10.1016/j.tetasy.2011.06.027] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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31
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Descroix K, Wagner GK. The first C-glycosidic analogue of a novel galactosyltransferase inhibitor. Org Biomol Chem 2011; 9:1855-63. [PMID: 21267505 DOI: 10.1039/c0ob00630k] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Structural analogues and mimics of the natural sugar-nucleotide UDP-galactose (UDP-Gal) are sought after as chemical tools for glycobiology and drug discovery. We have recently developed a novel class of galactosyltransferase (GalT) inhibitors derived from UDP-Gal, bearing an additional substituent at the 5-position of the uracil base. Herein we report the first C-glycosidic derivative of this new class of GalT inhibitors. We describe a practical convergent synthesis of the new UDP-C-Gal derivative, including a systematic study into the use of radical chemistry for the preparation of galactosyl ethylphosphonate, a key synthetic intermediate. The new inhibitor showed activity against a bacterial UDP-Gal 4'-epimerase at micromolar concentrations. This is the first example of a base-modified UDP-sugar as an inhibitor of a UDP-sugar-dependent enzyme which is not a glycosyltransferase, and these results may therefore have implications for the design of inhibitors of these enzymes in the future.
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Affiliation(s)
- Karine Descroix
- School of Pharmacy, University of East Anglia, Norwich, UK NR4 7TJ
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Gómez AM, Barrio A, Pedregosa A, Uriel C, Valverde S, López JC. Sonogashira Couplings of Halo- and Epoxy-Halo-exo-Glycals: Concise Entry to Carbohydrate-Derived Enynes. European J Org Chem 2010. [DOI: 10.1002/ejoc.201000170] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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6,7,8,10-Tetra-O-benzyl-1,2,3,4-tetradeoxy-α-D-gluco-dec-5-ulopyranosyl 2,3,4,6-Tetra-O-benzyl-α-D-glucopyranoside. MOLBANK 2010. [DOI: 10.3390/m671] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
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34
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Novoa A, Pellegrini-Moïse N, Lamandé-Langle S, Chapleur Y. Efficient access to disubstituted exo-glycals. Application to the preparation of C-glycosyl compounds. Tetrahedron Lett 2009. [DOI: 10.1016/j.tetlet.2009.09.019] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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35
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Reinke SO, Lehmer G, Hinderlich S, Reutter W. Regulation and pathophysiological implications of UDP-GlcNAc 2-epimerase/ManNAc kinase (GNE) as the key enzyme of sialic acid biosynthesis. Biol Chem 2009; 390:591-9. [DOI: 10.1515/bc.2009.073] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
AbstractThe key enzyme for the biosynthesis ofN-acetylneuraminic acid, from which all other sialic acids are formed, is the bifunctional enzyme UDP-N-acetylglucosamine 2-epimerase/N-acetylmannosamine kinase (GNE). GNE is a highly conserved protein found throughout the animal kingdom. Its highest expression is seen in the liver and placenta. GNE is regulated by a variety of biochemical means, including tetramerization promoted by the substrate UDP-GlcNAc, phosphorylation by protein kinase C and feedback inhibition by CMP-Neu5Ac, which is defect in the human disease sialuria. GNE knock-out in mice leads to embryonic lethality, emphasizing the crucial role of this key enzyme for sialic acid biosynthesis. The metabolic capacity to synthesize sialic acid and CMP-sialic acid upon ManNAc loads is amazingly high. An additional characteristic of GNE is its interaction with proteins involved in the regulation of development, which might play a crucial role in the hereditary inclusion body myopathy. Due to the importance of increased concentrations of tumor-surface sialic acid, first attempts to find inhibitors of GNE have been successful.
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36
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Elamparuthi E, Linker T. Carbohydrate-2-deoxy-2-phosphonates: simple synthesis and Horner-Emmons reaction. Angew Chem Int Ed Engl 2009; 48:1853-5. [PMID: 19170148 DOI: 10.1002/anie.200804725] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
Phosphorus meets carbohydrates: Dimethyl phosphite reacts with ceric(IV) ammonium nitrate (CAN) to give phosphonyl radicals that add to glycals 1. The derivatives 2 were isolated in high yields and during a subsequent Horner-Emmons reaction underwent an interesting elimination to give 3,6-dihydro-2H-pyrans 3. The short sequence with simple precursors is applicable to the transformation of hexoses, pentoses, and disaccharides. Bn = benzyl.
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Affiliation(s)
- Elangovan Elamparuthi
- Institute of Chemistry, University of Potsdam, Karl-Liebknecht-Strasse 24-25, 14476 Potsdam, Germany
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37
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Caravano A, Vincent SP. Synthesis of ThreeC-Glycoside Analogues of UDP-Galactopyranose as Conformational Probes for the Mutase-Catalyzed Furanose/Pyranose Interconversion. European J Org Chem 2009. [DOI: 10.1002/ejoc.200801249] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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38
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Elamparuthi E, Linker T. Kohlenhydrat-2-desoxy-2-phosphonate: einfache Synthese und Horner-Emmons-Reaktion. Angew Chem Int Ed Engl 2009. [DOI: 10.1002/ange.200804725] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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39
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40
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Barroso S, Blay G, Muñoz MC, Pedro J. Highly Enantio- and Diastereoselective Inverse Electron Demand Hetero-Diels-Alder Reaction using 2-Alkenoylpyridine N-Oxides as Oxo-Heterodienes. Adv Synth Catal 2008. [DOI: 10.1002/adsc.200800606] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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41
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Linker T, Schanzenbach D, Elamparuthi E, Sommermann T, Fudickar W, Gyóllai V, Somsák L, Demuth W, Schmittel M. Remarkable Oxidation Stability of Glycals: Excellent Substrates for Cerium(IV)-Mediated Radical Reactions. J Am Chem Soc 2008; 130:16003-10. [DOI: 10.1021/ja8052706] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Torsten Linker
- Department of Chemistry, University of Potsdam, Karl-Liebknecht-Strasse 24-25, D-14476 Potsdam, Germany, Department of Organic Chemistry, University of Debrecen, P.O. Box 20, H-4010 Debrecen, Hungary, and Department of Chemistry, University of Siegen, Adolf Reichwein Strasse 2, D-57068 Siegen, Germany
| | - Dirk Schanzenbach
- Department of Chemistry, University of Potsdam, Karl-Liebknecht-Strasse 24-25, D-14476 Potsdam, Germany, Department of Organic Chemistry, University of Debrecen, P.O. Box 20, H-4010 Debrecen, Hungary, and Department of Chemistry, University of Siegen, Adolf Reichwein Strasse 2, D-57068 Siegen, Germany
| | - Elangovan Elamparuthi
- Department of Chemistry, University of Potsdam, Karl-Liebknecht-Strasse 24-25, D-14476 Potsdam, Germany, Department of Organic Chemistry, University of Debrecen, P.O. Box 20, H-4010 Debrecen, Hungary, and Department of Chemistry, University of Siegen, Adolf Reichwein Strasse 2, D-57068 Siegen, Germany
| | - Thomas Sommermann
- Department of Chemistry, University of Potsdam, Karl-Liebknecht-Strasse 24-25, D-14476 Potsdam, Germany, Department of Organic Chemistry, University of Debrecen, P.O. Box 20, H-4010 Debrecen, Hungary, and Department of Chemistry, University of Siegen, Adolf Reichwein Strasse 2, D-57068 Siegen, Germany
| | - Werner Fudickar
- Department of Chemistry, University of Potsdam, Karl-Liebknecht-Strasse 24-25, D-14476 Potsdam, Germany, Department of Organic Chemistry, University of Debrecen, P.O. Box 20, H-4010 Debrecen, Hungary, and Department of Chemistry, University of Siegen, Adolf Reichwein Strasse 2, D-57068 Siegen, Germany
| | - Viktor Gyóllai
- Department of Chemistry, University of Potsdam, Karl-Liebknecht-Strasse 24-25, D-14476 Potsdam, Germany, Department of Organic Chemistry, University of Debrecen, P.O. Box 20, H-4010 Debrecen, Hungary, and Department of Chemistry, University of Siegen, Adolf Reichwein Strasse 2, D-57068 Siegen, Germany
| | - László Somsák
- Department of Chemistry, University of Potsdam, Karl-Liebknecht-Strasse 24-25, D-14476 Potsdam, Germany, Department of Organic Chemistry, University of Debrecen, P.O. Box 20, H-4010 Debrecen, Hungary, and Department of Chemistry, University of Siegen, Adolf Reichwein Strasse 2, D-57068 Siegen, Germany
| | - Wolfgang Demuth
- Department of Chemistry, University of Potsdam, Karl-Liebknecht-Strasse 24-25, D-14476 Potsdam, Germany, Department of Organic Chemistry, University of Debrecen, P.O. Box 20, H-4010 Debrecen, Hungary, and Department of Chemistry, University of Siegen, Adolf Reichwein Strasse 2, D-57068 Siegen, Germany
| | - Michael Schmittel
- Department of Chemistry, University of Potsdam, Karl-Liebknecht-Strasse 24-25, D-14476 Potsdam, Germany, Department of Organic Chemistry, University of Debrecen, P.O. Box 20, H-4010 Debrecen, Hungary, and Department of Chemistry, University of Siegen, Adolf Reichwein Strasse 2, D-57068 Siegen, Germany
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Zhang J, Yan S, Liang X, Wu J, Wang D, Kong F. Practical preparation of 2-azido-2-deoxy-β-d-mannopyranosyl carbonates and their application in the synthesis of oligosaccharides. Carbohydr Res 2007; 342:2810-7. [PMID: 17910887 DOI: 10.1016/j.carres.2007.09.001] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2007] [Revised: 08/30/2007] [Accepted: 09/02/2007] [Indexed: 10/22/2022]
Abstract
1-O-Allyloxycarbonyl (or ethyloxycarbonyl)-2-azido-2-deoxy-3-O-benzyl (or allyl, or benzoyl)-4,6-O-isopropylidene-beta-d-mannopyranose derivatives were prepared from the corresponding 2-hydroxy-beta-d-glucopyranosyl carbonates in high yields via triflation of the 2-hydroxyl group and subsequent SN2 displacement with azide ion. An N-acetyl-mannosamine-containing trisaccharide, a fragment of the putative O10 antigen from Acinetobacter baumannii, was efficiently synthesized using these derivatives.
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Affiliation(s)
- Jianjun Zhang
- Key Lab of Pesticide Chemistry and Application Technology, Department of Applied Chemistry, China Agricultural University, Beijing 100094, China
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43
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Graziani A, Amer H, Zamyatina A, Hofinger A, Kosma P. Synthesis of C-glycosidically linked ADP glycero-β-d-manno-heptose analogues. ACTA ACUST UNITED AC 2007. [DOI: 10.1016/j.tetasy.2006.12.015] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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44
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Cermola F, Iesce MR. Dye-sensitized photooxygenation of sugar-furans as synthetic strategy for novel C-nucleosides and functionalized exo-glycals. Tetrahedron 2006. [DOI: 10.1016/j.tet.2006.07.109] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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45
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Gómez AM, Barrio A, Amurrio I, Valverde S, Jarosz S, López JC. Convergent stereocontrolled synthesis of substituted exo-glycals by Stille cross-coupling of halo-exo-glycals and stannanes. Tetrahedron Lett 2006. [DOI: 10.1016/j.tetlet.2006.06.133] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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46
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Vidal S, Bruyère I, Malleron A, Augé C, Praly JP. Non-isosteric C-glycosyl analogues of natural nucleotide diphosphate sugars as glycosyltransferase inhibitors. Bioorg Med Chem 2006; 14:7293-301. [PMID: 16843664 DOI: 10.1016/j.bmc.2006.06.057] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2005] [Revised: 06/13/2006] [Accepted: 06/23/2006] [Indexed: 11/26/2022]
Abstract
A series of C-glycosyl ethylphosphonophosphate analogues of UDP-Glc, UDP-Gal, UDP-GlcNAc and GDP-Fuc were synthesized from the corresponding C-glycosyl ethylphosphonic acids. Analogues were obtained as alpha-anomers through either diastereoselective photo-induced radical addition of glycosyl bromides (D-Glc, D-Gal and L-Fuc) to diethyl vinylphosphonate, or a multi-step sequence (D-GlcNAc), with subsequent coupling with morpholidate-activated nucleotide monophosphates. The in vitro inhibitory activity of UDP-Gal, GDP-Fuc and UDP-GlcNAc analogues towards glycosyltransferases (beta-1,4-GalT, FUT3 and LgtA) was evaluated through a competition fluorescence assay and IC(50) values of 40 microM, 2 mM and 3.5 mM were obtained, respectively.
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Affiliation(s)
- Sébastien Vidal
- Laboratoire de Chimie Organique 2, UMR-CNRS 5181, Université Claude Bernard Lyon 1, CPE-Lyon Bâtiment 308, 43 Boulevard du 11 Novembre 1918, F-69622 Villeurbanne, France
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47
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Chang R, Vo TT, Finney NS. Synthesis of the C1-phosphonate analog of UDP-GlcNAc. Carbohydr Res 2006; 341:1998-2004. [PMID: 16750179 DOI: 10.1016/j.carres.2006.05.008] [Citation(s) in RCA: 35] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2006] [Revised: 05/09/2006] [Accepted: 05/10/2006] [Indexed: 11/25/2022]
Abstract
We describe the first synthesis of the C1-phosphonate analog of UDP-GlcNAc, based on a new preparation of the corresponding glycosyl phosphonate. This C-glycosyl analog is shown to be a very weak inhibitor (Ki>10 mM) of fungal chitin synthase, indicating that at least in this case the replacement of the anomeric oxygen with a methylene group is not an innocent substitution.
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Affiliation(s)
- Robert Chang
- Department of Chemistry and Biochemistry, University of California, San Diego, La Jolla, CA 92093-0358, USA
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48
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Dinev Z, Wardak AZ, Brownlee RTC, Williams SJ. A convenient gram-scale synthesis of uridine diphospho(13C6)glucose. Carbohydr Res 2006; 341:1743-7. [PMID: 16603138 DOI: 10.1016/j.carres.2006.02.033] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2006] [Revised: 02/20/2006] [Accepted: 02/24/2006] [Indexed: 10/24/2022]
Abstract
A simple gram-scale synthesis of uridine diphospho(13C6)glucose is presented from D-(13C6)glucose. The critical step uses a 1H-tetrazole-catalyzed coupling of 2,3,4,6-tetra-O-acetyl-alpha-D-glucopyranosyl-1-phosphate and UMP-morpholidate. The uridine diphospho(13C6)glucose was used in the structural identification of (1-->3)-beta-D-glucan from Lolium multiflorum.
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Affiliation(s)
- Zoran Dinev
- School of Chemistry, University of Melbourne, Parkville, Victoria 3010, Australia
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49
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Xie J, Ménand M, Valéry JM. Regioselective debenzylation of C-glycosyl compounds by boron trichloride. Carbohydr Res 2005; 340:481-7. [PMID: 15680604 DOI: 10.1016/j.carres.2004.12.001] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2004] [Revised: 11/17/2004] [Accepted: 12/02/2004] [Indexed: 10/26/2022]
Abstract
Boron trichloride has been found to promote selective deprotection of 1,2- or 1,3-cis oriented secondary benzyl ethers of per-benzylated C-glycosyl derivatives. The reactivity towards BCl(3) follows the order: C-4>or=C-2>C-6>C-3 for C-glucopyranosyl derivatives and C-3>or=C-4>C-6>C-2 for C-galactopyranosyl derivatives. Preparatively useful selective debenzylation at secondary positions was possible after careful control of reaction conditions.
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Affiliation(s)
- Juan Xie
- Synthèse, Structure et Fonction des Molécules Bioactives, CNRS UMR 7613, Equipe Chimie des Glucides, Université Pierre et Marie Curie, 4 Place Jussieu, F-75005 Paris, France.
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50
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Bodner R, Marcellino BK, Severino A, Smenton AL, Rojas CM. Alpha-N-acetylmannosamine (ManNAc) synthesis via rhodium(II)-catalyzed oxidative cyclization of glucal 3-carbamates. J Org Chem 2005; 70:3988-96. [PMID: 15876087 DOI: 10.1021/jo0500129] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
[reaction: see text] Glucal 3-carbamates 1 and 7 underwent oxidative cyclization with iodobenzene diacetate or iodosobenzene in the presence of Rh2(OAc)4, providing mannosamine 2-N,3-O-oxazolidinones. With iodosobenzene, incorporation of 4-penten-1-ol provided a readily separable anomeric mixture of n-pentenyl glycosides, with the anomers exhibiting pronounced differences in reactivity as glycosyl donors. N-acylation of the sugar oxazolidinones led to alpha-selective glycosyl donors for the elaboration of various 2-mannosamine frameworks. Alternatively, the anomeric n-pentenyl glycosides of N-Cbz 2-mannosamine oxazolidinones were converted separately to oxazolidinone-opened derivatives 28alpha and 28beta. These served as stereoconvergent glycosyl donors, and the alpha-linked products were readily advanced to a variety of N-acetylmannosamine (ManNAc) frameworks, using an intramolecular O-->N acetyl transfer as the final step.
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Affiliation(s)
- Rena Bodner
- Department of Chemistry, Barnard College, 3009 Broadway, New York, New York 10027, USA
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