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Manning JC, Baldoneschi V, Romero-Hernández LL, Pichler KM, GarcÍa Caballero G, André S, Kutzner TJ, Ludwig AK, Zullo V, Richichi B, Windhager R, Kaltner H, Toegel S, Gabius HJ, Murphy PV, Nativi C. Targeting osteoarthritis-associated galectins and an induced effector class by a ditopic bifunctional reagent: Impact of its glycan part on binding measured in the tissue context. Bioorg Med Chem 2022; 75:117068. [PMID: 36327696 DOI: 10.1016/j.bmc.2022.117068] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2022] [Revised: 09/07/2022] [Accepted: 10/12/2022] [Indexed: 11/19/2022]
Abstract
Pairing glycans with tissue lectins controls multiple effector pathways in (patho)physiology. A clinically relevant example is the prodegradative activity of galectins-1 and -3 (Gal-1 and -3) in the progression of osteoarthritis (OA) via matrix metalloproteinases (MMPs), especially MMP-13. The design of heterobifunctional inhibitors that can block galectin binding and MMPs both directly and by preventing their galectin-dependent induction selectively offers a perspective to dissect the roles of lectins and proteolytic enzymes. We describe the synthesis of such a reagent with a bivalent galectin ligand connected to an MMP inhibitor and of two tetravalent glycoclusters with a subtle change in headgroup presentation for further elucidation of influence on ligand binding. Testing was performed on clinical material with mixtures of galectins as occurring in vivo, using sections of fixed tissue. Two-colour fluorescence microscopy monitored binding to the cellular glycome after optimization of experimental parameters. In the presence of the inhibitor, galectin binding to OA specimens was significantly reduced. These results open the perspective to examine the inhibitory capacity of custom-made ditopic compounds on binding of lectins in mixtures using sections of clinical material with known impact of galectins and MMPs on disease progression.
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Affiliation(s)
- Joachim C Manning
- Institute of Physiological Chemistry, Faculty of Veterinary Medicine, Ludwig-Maximilians-University Munich, Lena-Christ-Str. 48, 82152 Planegg, Germany
| | - Veronica Baldoneschi
- Department of Chemistry "Ugo Schiff", University of Florence, Via della Lastruccia, 3-13, Sesto Fiorentino, Florence 50019, Italy
| | - Laura L Romero-Hernández
- School of Biological and Chemical Sciences, University of Galway, University Road, Galway H91 TK33, Ireland
| | - Katharina M Pichler
- Karl Chiari Lab for Orthopedic Biology, Department of Orthopedics and Trauma Surgery, Medical University of Vienna, Waehringer Guertel 18-20, 1090 Vienna, Austria
| | - Gabriel GarcÍa Caballero
- Institute of Physiological Chemistry, Faculty of Veterinary Medicine, Ludwig-Maximilians-University Munich, Lena-Christ-Str. 48, 82152 Planegg, Germany
| | - Sabine André
- Institute of Physiological Chemistry, Faculty of Veterinary Medicine, Ludwig-Maximilians-University Munich, Lena-Christ-Str. 48, 82152 Planegg, Germany
| | - Tanja J Kutzner
- Institute of Physiological Chemistry, Faculty of Veterinary Medicine, Ludwig-Maximilians-University Munich, Lena-Christ-Str. 48, 82152 Planegg, Germany
| | - Anna-Kristin Ludwig
- Institute of Physiological Chemistry, Faculty of Veterinary Medicine, Ludwig-Maximilians-University Munich, Lena-Christ-Str. 48, 82152 Planegg, Germany
| | - Valerio Zullo
- Dipartimento di Chimica e Chimica Industriale, University of Pisa, Via Moruzzi 13, Pisa 56124, Italy
| | - Barbara Richichi
- Department of Chemistry "Ugo Schiff", University of Florence, Via della Lastruccia, 3-13, Sesto Fiorentino, Florence 50019, Italy
| | - Reinhard Windhager
- Karl Chiari Lab for Orthopedic Biology, Department of Orthopedics and Trauma Surgery, Medical University of Vienna, Waehringer Guertel 18-20, 1090 Vienna, Austria
| | - Herbert Kaltner
- Institute of Physiological Chemistry, Faculty of Veterinary Medicine, Ludwig-Maximilians-University Munich, Lena-Christ-Str. 48, 82152 Planegg, Germany
| | - Stefan Toegel
- Karl Chiari Lab for Orthopedic Biology, Department of Orthopedics and Trauma Surgery, Medical University of Vienna, Waehringer Guertel 18-20, 1090 Vienna, Austria; Ludwig Boltzmann Institute for Arthritis and Rehabilitation, 1090 Vienna, Austria
| | - Hans-Joachim Gabius
- Institute of Physiological Chemistry, Faculty of Veterinary Medicine, Ludwig-Maximilians-University Munich, Lena-Christ-Str. 48, 82152 Planegg, Germany
| | - Paul V Murphy
- School of Biological and Chemical Sciences, University of Galway, University Road, Galway H91 TK33, Ireland; SSPC - Science Foundation Ireland Research Centre for Pharmaceuticals, CÚRAM - Science Foundation Ireland Research Centre for Medical Devices, School of Biological and Chemical Sciences, National University of Ireland Galway, University Road, Galway H91 TK33, Ireland.
| | - Cristina Nativi
- Department of Chemistry "Ugo Schiff", University of Florence, Via della Lastruccia, 3-13, Sesto Fiorentino, Florence 50019, Italy; CeRM, University of Florence, via L. Sacconi, 6, Sesto Fiorentino, Florence 50019, Italy
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Rim-differentiation vs. mixture of constitutional isomers: A binding study between pillar[5]arene-based glycoclusters and lectins from pathogenic bacteria. CHINESE CHEM LETT 2022. [DOI: 10.1016/j.cclet.2022.107872] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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3
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Wojaczyńska E, Steppeler F, Iwan D, Scherrmann MC, Marra A. Synthesis and Applications of Carbohydrate-Based Organocatalysts. Molecules 2021; 26:7291. [PMID: 34885873 PMCID: PMC8659088 DOI: 10.3390/molecules26237291] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2021] [Revised: 11/22/2021] [Accepted: 11/24/2021] [Indexed: 12/22/2022] Open
Abstract
Organocatalysis is a very useful tool for the asymmetric synthesis of biologically or pharmacologically active compounds because it avoids the use of noxious metals, which are difficult to eliminate from the target products. Moreover, in many cases, the organocatalysed reactions can be performed in benign solvents and do not require anhydrous conditions. It is well-known that most of the above-mentioned reactions are promoted by a simple aminoacid, l-proline, or, to a lesser extent, by the more complex cinchona alkaloids. However, during the past three decades, other enantiopure natural compounds, the carbohydrates, have been employed as organocatalysts. In the present exhaustive review, the detailed preparation of all the sugar-based organocatalysts as well as their catalytic properties are described.
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Affiliation(s)
- Elżbieta Wojaczyńska
- Faculty of Chemistry, Wrocław University of Science and Technology, Wybrzeże Wyspiańskiego 27, 50 370 Wrocław, Poland
| | - Franz Steppeler
- Faculty of Chemistry, Wrocław University of Science and Technology, Wybrzeże Wyspiańskiego 27, 50 370 Wrocław, Poland
| | - Dominika Iwan
- Faculty of Chemistry, Wrocław University of Science and Technology, Wybrzeże Wyspiańskiego 27, 50 370 Wrocław, Poland
| | - Marie-Christine Scherrmann
- Institut de Chimie Moléculaire et des Matériaux d'Orsay (ICMMO), Université Paris-Saclay, Bâtiment 420, 91405 Orsay, France
| | - Alberto Marra
- Institut des Biomolécules Max Mousseron (IBMM-UMR 5247), Université de Montpellier, Pôle Chimie Balard Recherche, 1919 Route de Mende, 34293 Montpellier, France
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4
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Synthesis of new saccharide azacrown cryptands. Carbohydr Res 2015; 414:51-9. [PMID: 26257374 DOI: 10.1016/j.carres.2015.07.007] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2015] [Revised: 07/02/2015] [Accepted: 07/03/2015] [Indexed: 11/24/2022]
Abstract
New cryptands including bis-azacrown and saccharidic moieties in their structure were prepared in several steps by applying Staudinger-aza-Wittig reaction (SAW). Syntheses have been started from cheap, easily available commercial compounds such as D-glucose, D-cellobiose and D-lactose subsequently transformed into their derivatives in fairly good yields (60-65%) and suitable to give desired final cryptands by direct SAW coupling reactions.
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5
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New sugar-derived bifunctional chiral ureas as highly effective organocatalysts in asymmetric aza-Henry reaction. Carbohydr Res 2015; 404:83-6. [DOI: 10.1016/j.carres.2014.11.019] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2014] [Revised: 11/19/2014] [Accepted: 11/23/2014] [Indexed: 11/18/2022]
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6
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Porwański S. New ureas containing glycosyl and diphenylphosphinyl scaffolds: synthesis and the first attempts to use them in asymmetric synthesis. Carbohydr Res 2014; 394:7-12. [PMID: 24905550 DOI: 10.1016/j.carres.2014.04.015] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2014] [Revised: 04/15/2014] [Accepted: 04/21/2014] [Indexed: 10/25/2022]
Abstract
Chiral ureas containing glycosyl and diphenylphosphinyl scaffolds were found to be an effective organocatalyst. They were synthesised in high yields by a one-pot tandem Staudinger/aza-Wittig coupling reaction. The first attempts of using them in asymmetric synthesis are presented. Yields of the Morita-Baylis-Hillman reaction were moderate with an enantiomeric excess of up to 80%.
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Affiliation(s)
- Stanisław Porwański
- Department of Organic and Applied Chemistry, University of Łódź, Tamka 12, 91-403 Łódź, Poland.
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7
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Pintal M, Kryczka B, Marsura A, Porwański S. Synthesis of bis-cellobiose and bis-glucose derivatives of azacrown macrocycles as hosts in complexes with acetylsalicylic acid and 4-acetamidophenol. Carbohydr Res 2014; 386:18-22. [PMID: 24462669 DOI: 10.1016/j.carres.2013.12.017] [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] [Received: 11/07/2013] [Revised: 12/20/2013] [Accepted: 12/21/2013] [Indexed: 11/29/2022]
Abstract
Two new C2 symmetric bis-cellobiose and bis-glucose azacrown derivatives were prepared according to the one-step procedure using azacrown ethers and azidosaccharides. Their complexes with aspirin and paracetamol were studied with the use of proton NMR spectroscopy. It was found that these pseudocryptands bind aspirin and paracetamol but each one in a different manner.
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Affiliation(s)
- Michalina Pintal
- Department of Organic and Applied Chemistry, University of Łódź, Tamka 12, 91-403 Łódź, Poland
| | - Bogusław Kryczka
- Department of Organic and Applied Chemistry, University of Łódź, Tamka 12, 91-403 Łódź, Poland
| | - Alain Marsura
- Universite de Lorraine, SRSMC UMR7565, Faculte des Sciences et Techniques, B.P. 70239, F-54506 Vandoeuvre-Les-Nancy Cedex, France
| | - Stanisław Porwański
- Department of Organic and Applied Chemistry, University of Łódź, Tamka 12, 91-403 Łódź, Poland.
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Abstract
Nitrogen-containing macrocyclic compounds (amines, amides, and N-heterocyclic derivatives) are important targets in supramolecular chemistry. This chapter discusses the importance of aza-macrocycles in general and, in particular, those receptors containing sugar unit(s). The combination of a carbohydrate scaffold bearing nitrogen-containing functional groups in macrocyclic molecules opens a convenient route to chiral receptors having potentially useful properties. The carbohydrate-based macrocycles discussed are classified into several general groups: (1) aza-crown ethers containing a carbohydrate subunit, (2) cyclic homooligomers from amino sugars, (3) sugar-based cryptands, (4) cyclic peptides containing amino sugar units (including C2- and C3-symmetrical macrocyclic glycopeptides), (5) nitrogen- containing glycophanes, and (6) 1,2,3-triazoles containing synthetic cyclodextrin analogues. The general strategies employed, as well as specific ones leading to such complex derivatives, are surveyed. Applications of such carbohydrate receptors, pointing to their importance as hosts in supramolecular chemistry, are discussed.
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9
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André S, Jarikote DV, Yan D, Vincenz L, Wang GN, Kaltner H, Murphy PV, Gabius HJ. Synthesis of bivalent lactosides and their activity as sensors for differences between lectins in inter- and intrafamily comparisons. Bioorg Med Chem Lett 2012; 22:313-8. [DOI: 10.1016/j.bmcl.2011.11.010] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2011] [Revised: 11/01/2011] [Accepted: 11/02/2011] [Indexed: 02/02/2023]
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10
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L MR, Yousuf SK, Mukherjee D, Taneja SC. Regioselective azidotrimethylsilylation of carbohydrates and applications thereof. Org Biomol Chem 2012; 10:9090-8. [DOI: 10.1039/c2ob26324f] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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11
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PETO C, BATTA G, GYOERGYDEAK Z, SZTARICSKAI F. ChemInform Abstract: Synthesis of the Anomers of Hepta-O-acetylcellobiosyl, -lactosyl, - maltosyl, and -melibiosyl Azide. CHEMINFORM 2010; 22:no-no. [DOI: 10.1002/chin.199132239] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/27/2023]
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12
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Leyden R, Velasco-Torrijos T, André S, Gouin S, Gabius HJ, Murphy PV. Synthesis of Bivalent Lactosides Based on Terephthalamide, N,N′-Diglucosylterephthalamide, and Glycophane Scaffolds and Assessment of Their Inhibitory Capacity on Medically Relevant Lectins. J Org Chem 2009; 74:9010-26. [DOI: 10.1021/jo901667r] [Citation(s) in RCA: 54] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Affiliation(s)
- Rosaria Leyden
- School of Chemistry and Chemical Biology, Centre for Synthesis and Chemical Biology, University College Dublin, Belfield, Dublin 4, Ireland
| | - Trinidad Velasco-Torrijos
- School of Chemistry and Chemical Biology, Centre for Synthesis and Chemical Biology, University College Dublin, Belfield, Dublin 4, Ireland
| | - Sabine André
- Institute of Physiological Chemistry, Faculty of Veterinary Medicine, Ludwig-Maximilians-University Munich, Veterinärstrasse 13, 80539 Munich, Germany
| | - Sebastien Gouin
- School of Chemistry and Chemical Biology, Centre for Synthesis and Chemical Biology, University College Dublin, Belfield, Dublin 4, Ireland
| | - Hans-Joachim Gabius
- Institute of Physiological Chemistry, Faculty of Veterinary Medicine, Ludwig-Maximilians-University Munich, Veterinärstrasse 13, 80539 Munich, Germany
| | - Paul V. Murphy
- School of Chemistry and Chemical Biology, Centre for Synthesis and Chemical Biology, University College Dublin, Belfield, Dublin 4, Ireland
- School of Chemistry, National University of Ireland, Galway
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13
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Schierholt A, Shaikh HA, Schmidt-Lassen J, Lindhorst TK. Utilizing Staudinger Ligation for the Synthesis of Glycoamino Acid Building Blocks and Other Glycomimetics. European J Org Chem 2009. [DOI: 10.1002/ejoc.200900437] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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14
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Zhang W, Wang J, Li J, Yu L, Wang PG. Large Scale Synthesis of A Derivative of An α-Galactosyl Trisaccharide Epitope Involved in the Hyperacute Rejection of Xenotransplantation. J Carbohydr Chem 2008. [DOI: 10.1080/07328309908544050] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Affiliation(s)
- Wei Zhang
- a Department of Chemistry , Wayne State University , Detroit, MI 48202, U.S.A
| | - Jianqiang Wang
- a Department of Chemistry , Wayne State University , Detroit, MI 48202, U.S.A
| | - Jun Li
- a Department of Chemistry , Wayne State University , Detroit, MI 48202, U.S.A
| | - Libing Yu
- a Department of Chemistry , Wayne State University , Detroit, MI 48202, U.S.A
| | - Peng George Wang
- a Department of Chemistry , Wayne State University , Detroit, MI 48202, U.S.A
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15
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dos Anjos JV, Sinou D, de Melo SJ, Srivastava RM. Synthesis of glycosyl-triazole linked 1,2,4-oxadiazoles. Carbohydr Res 2007; 342:2440-9. [PMID: 17689508 DOI: 10.1016/j.carres.2007.07.011] [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: 05/29/2007] [Revised: 07/02/2007] [Accepted: 07/12/2007] [Indexed: 11/18/2022]
Abstract
The synthesis of four different types of oxadiazoles containing a terminal acetylenic group is described. Reaction of these oxadiazoles with various azidoglycosides via a copper-catalyzed [3+2] cycloaddition ('click chemistry') afforded the corresponding glycosyl-triazole linked 1,2,4-oxadiazoles in good yields.
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Affiliation(s)
- Janaína V dos Anjos
- Laboratoire de Synthèse Asymétrique, UMR 5246-ICBMS, CPE Lyon, Université de Lyon, 43 Boulevard du 11 Novembre 1918, F-69622 Villeurbanne, France
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16
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17
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Menuel S, Porwanski S, Marsura A. New synthetic approach to per-O-acetyl-isocyanates, isothiocyanates and thioureas in the disaccharide and cyclodextrin series. NEW J CHEM 2006. [DOI: 10.1039/b600023a] [Citation(s) in RCA: 12] [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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18
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Tosin M, Murphy PV. Synthesis of Structurally Defined Scaffolds for Bivalent Ligand Display Based on Glucuronic Acid Anilides. The Degree of Tertiary Amide Isomerism and Folding Depends on the Configuration of a Glycosyl Azide. J Org Chem 2005; 70:4107-17. [PMID: 15876103 DOI: 10.1021/jo050200z] [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] [Indexed: 11/30/2022]
Abstract
[structures: see text] Syntheses and structural analyses of bivalent carbohydrates based on anilides of glucuronic acid are described. Secondary anilides predominantly adopted the Z-anti structure; there is also evidence for population of the Z-syn isomer. Bivalent tertiary anilides displayed two signal sets in their NMR spectra, consistent with the presence of (i) a major isomer where both amides have E configurations (EE) and (ii) a minor isomer where one amide is E and the other Z (EZ). Qualitative NOE/ROE spectroscopic studies in solution support the proposal that the anti conformation is preferred for E amides. The crystal structure of one bivalent tertiary anilide showed E-anti and E-syn structural isomers; intramolecular carbohydrate-carbohydrate stacking was observed and mediated by carbonyl-pyranose, azide-azide, and pyranose-aromatic interactions. The EE to EZ isomer ratio, or the degree of folding, for tertiary amides, was greatest for a bivalent compound containing two alpha-glycosyl azide groups; this was enhanced in water, suggesting that hydrophobic interactions are partially but not wholly responsible. Computational methods predicted azide-aromatic (N...H-C interaction) and azide-azide interactions for folded isomers. The close contact of the azide and aromatic protons (N...H-C interaction) was observed upon examination of the close packing in the crystal structure of a related monomer. It is proposed that the alpha-azide group is more optimally aligned, compared to the beta-azide, to facilitate interaction and minimize the surface area of the hydrophobic groups exposed to water, and this leads to the increased folding. The alkylation of bivalent secondary anilides induces a switch from Z to E amide that alters the scaffold orientation. The synthesis of a bivalent mannoside, based on a secondary anilide scaffold, for investigation of mannose-binding receptor cross-linking and lattice formation is described.
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Affiliation(s)
- Manuela Tosin
- Centre for Synthesis and Chemical Biology, Department of Chemistry, Conway Institute of Biomolecular and Biomedical Research, University College Dublin, Belfield, Dublin 4, Ireland
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Tosin M, O'Brien C, Fitzpatrick GM, Müller-Bunz H, Glass WK, Murphy PV. Synthesis and Structural Analysis of the Anilides of Glucuronic Acid and Orientation of the Groups on the Carbohydrate Scaffolding. J Org Chem 2005; 70:4096-106. [PMID: 15876102 DOI: 10.1021/jo0501994] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
[structures: see text] The synthesis of anilides derived from glucuronic acid is described. Secondary anilides had a Z configuration in the solid state and showed intramolecular and intermolecular hydrogen bonding. However, on the basis of NMR and IR studies, there was generally no evidence for the same hydrogen bonding in solution. Tertiary anilides showed a strong preference for the E configuration on the basis of NOE studies and molecular mechanics calculations. The alkylation of the secondary anilides induces a configurational switch that alters the orientation of the aromatic group with respect to the pyranose, which has relevance for presentation or orientation of pharmacophoric groups on carbohydrate scaffolds.
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Affiliation(s)
- Manuela Tosin
- Centre for Synthesis and Chemical Biology, Department of Chemistry, Conway Institute of Biomolecular and Biomedical Research, University College Dublin, Belfield, Dublin 4, Ireland
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21
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Ohlsson J, Larsson A, Haataja S, Alajääski J, Stenlund P, Pinkner JS, Hultgren SJ, Finne J, Kihlberg J, Nilsson UJ. Structure-activity relationships of galabioside derivatives as inhibitors of E. coli and S. suis adhesins: nanomolar inhibitors of S. suis adhesins. Org Biomol Chem 2005; 3:886-900. [PMID: 15731876 DOI: 10.1039/b416878j] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Four collections of Gal alpha1-4Gal derivatives were synthesised and evaluated as inhibitors of the PapG class II adhesin of uropathogenic Escherichia coli and of the P(N) and P(O) adhesins of Streptococcus suis strains. Galabiosides carrying aromatic structures at C1, methoxyphenyl O-galabiosides in particular, were identified as potent inhibitors of the PapG adhesin. Phenylurea derivatisation at C3' and methoxymethylation at O2' of galabiose provided inhibitors of the S. suis strains type P(N) adhesin with remarkably high affinities (30 and 50 nM, respectively). In addition, quantitative structure-activity relationship models for E. coli PapG adhesin and S. suis adhesin type P(O) were developed using multivariate data analysis. The inhibitory lead structures constitute an advancement towards high-affinity inhibitors as potential anti-adhesion therapeutic agents targeting bacterial infections.
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Abstract
Per-O-acetylated D-glycopyranoses derived from both mono- and disaccharides were first converted to glycosyl iodides and subsequently reacted with an azide source to achieve the stereoselective synthesis of beta-D-glycosyl azides after deacetylation. Low-temperature (4 degrees C) TEMPO oxidation of the monosaccharides provided the corresponding uronic acids, which were purified as the free acids. Oxidation of the lactosyl- and cellobiosyl azides resulted in diacid formation. However, 4',6'-O-benzylidene protection enabled selective oxidation of the C-6 hydroxyl. 2-Acetamido-2-deoxy-D-glycopyranosyl azides were also prepared and converted to uronic acids completing the library synthesis.
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Affiliation(s)
- Laiqiang Ying
- Department of Chemistry, University of California, One Shields Avenue, Davis, CA 95616, USA
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23
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Reaction of 1,2-trans-glycosyl acetates with phosphorus pentachloride: new efficient approach to 1,2-trans-glycosyl chlorides. Tetrahedron Lett 2002. [DOI: 10.1016/s0040-4039(02)02446-2] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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24
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Abstract
The treatment of 2,3,4,6-tetra-O-acetyl-1,5-anhydro-D-arabino-hex-1-enitol with azidotrimethylsilane by the aid of a catalytic amount of Yb(OTf)(3) afforded 2,4,6-tri-O-acetyl-2,3-dideoxy-alpha-D-erythro-hex-2-enopyranosyl azide in high yield.
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Affiliation(s)
- H Kawabata
- Department of Chemistry, Faculty of Science, Yamaguchi University, Yamaguchi 753-8512, Japan
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25
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Hanessian S, Lou B. Stereocontrolled glycosyl transfer reactions with unprotected glycosyl donors. Chem Rev 2000; 100:4443-64. [PMID: 11749354 DOI: 10.1021/cr9903454] [Citation(s) in RCA: 135] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- S Hanessian
- Advanced SynTech, 9800 Bluegrass Parkway, Louisville, Kentucky 40299
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26
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Boullanger P, Maunier V, Lafont D. Syntheses of amphiphilic glycosylamides from glycosyl azides without transient reduction to glycosylamines. Carbohydr Res 2000; 324:97-106. [PMID: 10702876 DOI: 10.1016/s0008-6215(99)00284-0] [Citation(s) in RCA: 37] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Protected glycosyl azides react with acyl chlorides in the presence of triphenylphosphine to afford glycosylamides in high yields, at room temperature. Starting from the beta-glycosyl azides, the reaction is highly stereoselective and occurs with retention of configuration, whereas the alpha-azido anomers display a lower stereoselectivity giving rise to alpha/beta mixtures of glycosylamides. The reaction was applied to several monosaccharidic azides and to lactosyl azide with various acyl chlorides; it was shown to be of general use for preparing 1,2-trans beta-glycosylamides.
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Affiliation(s)
- P Boullanger
- Laboratoire de Chimie Organique II, Unité Mixte de Recherche CNRS 5622, Université de Lyon 1, Chimie Physique Electronique de Lyon, Villeurbanne, France.
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Györgydeák Z, Szilágyi L, Dinya Z, Jekö J. Practical route to the anomeric methyl (5-acetamido-4,7,8,9-tetra-O-acetyl-3,5-dideoxy-d-glycero-d-galacto-non-2-ulopyranosyl)onate azides. Carbohydr Res 1996. [DOI: 10.1016/s0008-6215(96)00136-x] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Harrison AW, Fisher JF, Guido DM, Couch SJ, Lawson JA, Sutter DM, Williams MV, DeGraaf GL, Rogers JE, Pals DT. Appraisal of a glycopeptide cloaking strategy for a therapeutic oligopeptide: glycopeptide analogs of the renin inhibitor ditekiren. Bioorg Med Chem 1994; 2:1339-61. [PMID: 7788297 DOI: 10.1016/s0968-0896(00)82086-6] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
Among the limitations to the practical therapeutic oligopeptide are low oral availability, indifferent aqueous solubility, and an astonishing efficient sequestration and biliary elimination by a multi-capacity liver transporter. Given the purposed use of N- and O- linked saccharides as functional appendages of eukaryotic peptides and proteins, a strategy of glycopeptide mimicry was examined for the oligopeptide renin inhibitor, ditekiren. The anticipation was that the saccharide would impart significant aqueous solubility, and might impact beneficially on the remaining two limitations. Execution of this approach was achieved by the removal of the (dimethylethoxy)carbonyl amino terminus of ditekiren, and its substitution by Boc-L-asparagine N-linked mono- and disaccharides. Potent hypotensive activity, as measured by a human renin-infused rat assay, is observed for virtually all of these structures (N-linked beta-pyranose D-N-acetyglucosaminyl, D-glucosaminyl, D-N-acetylgalactosaminyl, D-mannosyl, D-galactosyl, D-maltosyl, D-cellobiosyl, D-chitobiosyl, but not L-fucosyl). The basis for this dramatic improvement (relative to ditekiren in the same assay) is the diversion of the peptide clearance from rapid liver biliary clearance to slower urinary clearance (Fisher, J. F.; Harrison, A. W.; Wilkinson, K. F.; Rush, B. R.; Ruwart, M. J. J. Med. Chem. 1991, 34, 3140). Guided by the human renin-infused rat hypertension assay, an evaluation of the linker-saccharide pairing was made. Loss of hypotensive activity is observed upon substitution of the Boc-L-asn by Boc-D-asn, and by removal of the Boc amino terminus of the glycopeptide. Potent hypotensive activity is preserved by replacement of the Boc-L-asn linker by succinate, malate, tartrate, and adipate linkers. With the longer adipate spacer, attachment of the saccharide to the P-3 phenylalanine--with omission of the P-4 proline--retains activity. These data suggest value to the glycopeptide guise for preserving the in vivo activity, and for the beneficial manipulation of pharmacodynamics, of this renin inhibitory oligopeptide. This strategy may have general applicability.
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Affiliation(s)
- A W Harrison
- Department of Medicinal Chemistry, Upjohn Laboratories, Kalamazoo, MI 49007-4940, USA
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El Meslouti A, Beaupère D, Demailly G, Uzan R. One-pot stereoselective synthesis of glycosyl azides via 1,2-cyclic sulfite. Tetrahedron Lett 1994. [DOI: 10.1016/s0040-4039(00)76700-1] [Citation(s) in RCA: 36] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Bröder W, Kunz H. A new method of anomeric protection and activation based on the conversion of glycosyl azides into glycosyl fluorides. Carbohydr Res 1993; 249:221-41. [PMID: 8252554 DOI: 10.1016/0008-6215(93)84071-d] [Citation(s) in RCA: 44] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
Glycosyl azides provide reliable anomeric protection stable to conditions for hydrolytic removal of ester groups, for reductive opening or release of acetalic diol protection, for the introduction of ether-type protection, and for glycosylation processes. The utility of this anomeric protection is further enhanced as glycosyl azides may be converted into glycosyl fluorides, which can be activated for glycosylation reactions. To this end, glycosyl azides have been subjected to 1,3-dipolar cycloaddition with di-tert-butyl acetylenedicarboxylate. On treatment with hydrogen fluoride-pyridine complex the N-glycosyl triazole derivatives directly give glycosyl fluorides.
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Affiliation(s)
- W Bröder
- Institut für Organische Chemie, Universität Mainz, Germany
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Li C, Arasappan A, Fuchs P. Tetramethylguanidinium azide as a new reagent for the stereoselective synthesis of glycosyl azides. Tetrahedron Lett 1993. [DOI: 10.1016/s0040-4039(00)73629-x] [Citation(s) in RCA: 26] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Györgydeák Z, Szilágyi L, Paulsen H. Synthesis, Structure and Reactions of Glycosyl Azides. J Carbohydr Chem 1993. [DOI: 10.1080/07328309308021266] [Citation(s) in RCA: 89] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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