1
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Buntasana S, Padungros P. Glycosylation of n-pentenyl glycosides using bromodiethylsulfonium salt as an activator: interception of the glycosyl intermediate by chloride ion transfer. Org Biomol Chem 2023; 22:126-143. [PMID: 38051124 DOI: 10.1039/d3ob01618h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/07/2023]
Abstract
Utilization of n-pentenyl glycosides (NPGs) in modern carbohydrate synthesis may be hindered by their sluggish activation, which results from reversible halogenation and cyclization processes. Bromodiethylsulfonium bromopentachloroantimonate (BDSB) has been previously shown to be a powerful brominating agent for the cation-π polyene cyclization of less reactive and electron-poor polyenes. This study demonstrates the activation of NPGs using BDSB as a powerful brominating agent. BDSB effectively activates the terminal olefins of NPGs and the reaction proceeds through 5-exo-tet cyclization, offering a rapid and mild approach for glycosylation with a wide range of glycosyl donors, including n-pentenyl mannoside, n-pentenyl galactoside, and n-pentenyl glucoside. The success of this approach derives from the chloride ion transfer from the nonnucleophilic SbCl5Br anion to the glycosyl intermediate, which disrupts the equilibrium and produces a glycosyl chloride intermediate that is smoothly converted to 22 coupling products, with yields ranging from moderate to excellent (49-100%). The β-selective glycosylation is accomplished when employing NPGs equipped with a neighboring participating group. The practicality of the BDSB-activated glycosylation is demonstrated by a gram-scale synthesis. This study showcases BDSB as a potent activator for NPG glycosylation through the interception of a glycosyl intermediate that diminishes the equilibration during halogenation and 5-exo-tet cyclization.
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Affiliation(s)
- Supanat Buntasana
- Green Chemistry for Fine Chemical Production and Environmental Remediation Research Unit, Department of Chemistry, Faculty of Science, Chulalongkorn University, Phayathai Road, Pathumwan, Bangkok 10330, Thailand.
| | - Panuwat Padungros
- Green Chemistry for Fine Chemical Production and Environmental Remediation Research Unit, Department of Chemistry, Faculty of Science, Chulalongkorn University, Phayathai Road, Pathumwan, Bangkok 10330, Thailand.
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2
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Traboni S, Bedini E, Capasso D, Esposito F, Iadonisi A. Adaptation of Zemplén's conditions for a simple and highly selective approach to methyl 1,2-trans glycosides. Carbohydr Res 2023; 528:108824. [PMID: 37141732 DOI: 10.1016/j.carres.2023.108824] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2022] [Revised: 04/18/2023] [Accepted: 04/20/2023] [Indexed: 05/06/2023]
Abstract
1,2-trans methyl glycosides can be readily obtained from peracetylated sugars through their initial conversion into glycosyl iodide donors and subsequent exposure of these latter to a slight excess of sodium methoxide in methanol. Under these conditions a varied set of mono- and disaccharide precursors afforded the corresponding 1,2-trans glycosides with concomitant de-O-acetylation in satisfying yields (in the range 59-81%). A similar approach also proved effective when using GlcNAc glycosyl chloride as the donor.
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Affiliation(s)
- Serena Traboni
- Department of Chemical Sciences, University of Naples Federico II, Via Cinthia 4, 80126, Naples, Italy
| | - Emiliano Bedini
- Department of Chemical Sciences, University of Naples Federico II, Via Cinthia 4, 80126, Naples, Italy
| | - Domenica Capasso
- Center for Life Sciences and Technologies (CESTEV), University of Naples Federico II, 80145, Naples, Italy
| | - Fabiana Esposito
- Department of Chemical Sciences, University of Naples Federico II, Via Cinthia 4, 80126, Naples, Italy
| | - Alfonso Iadonisi
- Department of Chemical Sciences, University of Naples Federico II, Via Cinthia 4, 80126, Naples, Italy.
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3
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Walczak D, Sikorski A, Grzywacz D, Nowacki A, Liberek B. Identification of the furanose ring conformations and the factors driving their adoption. Carbohydr Res 2023; 526:108780. [PMID: 36944302 DOI: 10.1016/j.carres.2023.108780] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2023] [Revised: 02/23/2023] [Accepted: 02/28/2023] [Indexed: 03/06/2023]
Abstract
Three groups of furanoses with restricted freedom of rotation on the C3-C4, C2-C3, and C1-C2 bonds, respectively, are presented. Conformational analysis of these furanoses is conducted based on the proton nuclear magnetic resonance (1H NMR) spectroscopy, density functional theory (DFT) calculations, and X-ray analysis. It is shown that the particular group of the presented furanoses is locked in the specific conformation. These are the 1T2-like, the 0E-like, and the 3T4-like conformation, respectively. Characteristic 1H NMR spectra of these three conformations are presented and the factors influencing the conformational preferences of the analyzed furanoses are discussed.
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Affiliation(s)
- Dominik Walczak
- Faculty of Chemistry, University of Gdańsk, Wita Stwosza 63, 80-308, Gdańsk, Poland
| | - Artur Sikorski
- Faculty of Chemistry, University of Gdańsk, Wita Stwosza 63, 80-308, Gdańsk, Poland
| | - Daria Grzywacz
- Faculty of Chemistry, University of Gdańsk, Wita Stwosza 63, 80-308, Gdańsk, Poland
| | - Andrzej Nowacki
- Faculty of Chemistry, University of Gdańsk, Wita Stwosza 63, 80-308, Gdańsk, Poland
| | - Beata Liberek
- Faculty of Chemistry, University of Gdańsk, Wita Stwosza 63, 80-308, Gdańsk, Poland.
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4
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Trinderup HH, Sandgaard TLP, Juul-Madsen L, Jensen HH. Anomeric Thioglycosides Give Different Anomeric Product Distributions under NIS/TfOH Activation. J Org Chem 2022; 87:4154-4167. [PMID: 35239337 DOI: 10.1021/acs.joc.1c03001] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
The reaction of a series of anomeric thioglycosides with various glycosyl acceptors and N-iodosuccinimide/catalytic triflic acid was investigated with respect to reactivity and anomeric selectivity. In general, β-configured donors were found to give a more β-selective reaction outcome compared to their α-configured counterparts. The relative reactivity of various thioglycosides was measured through competition experiments, and the following order was established: phenyl, tolyl, methyl, ethyl, isopropyl, and 1-adamantyl.
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Affiliation(s)
| | | | - Line Juul-Madsen
- Department of Chemistry, Aarhus University, 8000 Aarhus C, Denmark
| | - Henrik H Jensen
- Department of Chemistry, Aarhus University, 8000 Aarhus C, Denmark
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5
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Zhong X, Zhao X, Ao J, Huang Y, Liu Y, Zhou S, Li B, Ishiwata A, Fang Q, Yang C, Cai H, Ding F. An experimental and theoretical study on stereocontrolled glycosylations by a “one-pot” procedure. Org Chem Front 2022. [DOI: 10.1039/d2qo00727d] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Herein we describe a “one-pot” strategy to install the stereoselectivity of both α- and β-glycosides by changing reaction conditions.
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Affiliation(s)
- Xuemei Zhong
- School of Pharmaceutical Sciences (Shenzhen), Shenzhen Campus of Sun Yat-sen University, Shenzhen 518107, China
| | - Xiaoya Zhao
- School of Pharmaceutical Sciences (Shenzhen), Shenzhen Campus of Sun Yat-sen University, Shenzhen 518107, China
| | - Jiaming Ao
- School of Pharmaceutical Sciences (Shenzhen), Shenzhen Campus of Sun Yat-sen University, Shenzhen 518107, China
| | - Yan Huang
- School of Pharmaceutical Sciences (Shenzhen), Shenzhen Campus of Sun Yat-sen University, Shenzhen 518107, China
| | - Yuhua Liu
- School of Physics and Electronic Engineering, Guangzhou University, Guangzhou 510006, China
| | - Siai Zhou
- School of Pharmaceutical Sciences (Shenzhen), Shenzhen Campus of Sun Yat-sen University, Shenzhen 518107, China
| | - Bizhi Li
- School of Pharmaceutical Sciences (Shenzhen), Shenzhen Campus of Sun Yat-sen University, Shenzhen 518107, China
| | | | - Qianglin Fang
- School of Public Health (Shenzhen), Shenzhen Campus of Sun Yat-sen University, Shenzhen 518107, China
| | - Chongguang Yang
- School of Public Health (Shenzhen), Shenzhen Campus of Sun Yat-sen University, Shenzhen 518107, China
| | - Hui Cai
- School of Pharmaceutical Sciences (Shenzhen), Shenzhen Campus of Sun Yat-sen University, Shenzhen 518107, China
| | - Feiqing Ding
- School of Pharmaceutical Sciences (Shenzhen), Shenzhen Campus of Sun Yat-sen University, Shenzhen 518107, China
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6
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Trinderup HH, Andersen SM, Heuckendorff M, Jensen HH. How do Various Reaction Parameters Influence Anomeric Selectivity in Chemical Glycosylation with Thioglycosides and NIS/TfOH Activation? European J Org Chem 2021. [DOI: 10.1002/ejoc.202100260] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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7
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Patry S, Robitzer M, Habas JP. Synthesis and characterization of a small library of bisglucosides: Influence of the nature of the diol/diphenol used in O-glucosylation. Carbohydr Res 2020; 500:108217. [PMID: 33317828 DOI: 10.1016/j.carres.2020.108217] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2020] [Revised: 11/26/2020] [Accepted: 12/01/2020] [Indexed: 10/22/2022]
Abstract
In this paper, the synthesis of different bisglucosides is investigated through the reaction of two acetylated glucose units with a diol (or diphenol) in order to develop a versatile molecular platform for the future development of bio-based polymers. A panel of five diols and one diphenol is initially used in order to examine the influence of their chemical skeleton on the reaction yield and both nature and proportion of formed species. Reaction products are identified using 1H and 13C NMR spectroscopies completed by MALDI-TOF MS technique. The nucleophilicity of these dihydroxy compounds is identified as being the main factor that governs the reaction characteristics. In particular, the best selectivity is obtained with the use of hydroquinone. Inversely, by-products (oligomers, deacetylated compounds) are observed with the diols defined by higher nucleophilicity despite the choice of stereoselective pathway using acyl protecting groups.
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Affiliation(s)
- Stéphane Patry
- ICGM, Univ Montpellier, CNRS, ENSCM, 34095 Montpellier, France.
| | - Mike Robitzer
- ICGM, Univ Montpellier, CNRS, ENSCM, 34095 Montpellier, France.
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8
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Chen HM, Withers SG. Synthesis of azido-deoxy and amino-deoxy glycosides and glycosyl fluorides for screening of glycosidase libraries and assembly of substituted glycosides. Carbohydr Res 2018; 467:33-44. [DOI: 10.1016/j.carres.2018.07.007] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2018] [Revised: 07/13/2018] [Accepted: 07/16/2018] [Indexed: 10/28/2022]
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9
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Donnier-Maréchal M, Abdullayev S, Bauduin M, Pascal Y, Fu MQ, He XP, Gillon E, Imberty A, Kipnis E, Dessein R, Vidal S. Tetraphenylethylene-based glycoclusters with aggregation-induced emission (AIE) properties as high-affinity ligands of bacterial lectins. Org Biomol Chem 2018; 16:8804-8809. [DOI: 10.1039/c8ob02035c] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
TPE-based glycoclusters are fluorescent through aggregation induced emission (AIE) in water.
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10
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Donnier-Maréchal M, Galanos N, Grandjean T, Pascal Y, Ji DK, Dong L, Gillon E, He XP, Imberty A, Kipnis E, Dessein R, Vidal S. Perylenediimide-based glycoclusters as high affinity ligands of bacterial lectins: synthesis, binding studies and anti-adhesive properties. Org Biomol Chem 2017; 15:10037-10043. [DOI: 10.1039/c7ob02749d] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Rapid access to perylenediimide-based glycoclusters allowed their evaluation as high affinity ligands of bacterial lectins and their potential as anti-adhesive antibacterials.
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11
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Chandra S, Yadav RN, Paniagua A, Banik BK. Indium salts-catalyzed O and S-glycosylation of bromo sugar with benzyl glycolate: an unprecedented hydrogenolysis. Tetrahedron Lett 2016. [DOI: 10.1016/j.tetlet.2016.02.039] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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12
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Chen HM, Armstrong Z, Hallam SJ, Withers SG. Synthesis and evaluation of a series of 6-chloro-4-methylumbelliferyl glycosides as fluorogenic reagents for screening metagenomic libraries for glycosidase activity. Carbohydr Res 2016; 421:33-39. [PMID: 26774876 DOI: 10.1016/j.carres.2015.12.010] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2015] [Revised: 12/10/2015] [Accepted: 12/24/2015] [Indexed: 10/22/2022]
Abstract
Screening of large enzyme libraries such as those derived from metagenomic sources requires sensitive substrates. Fluorogenic glycosides typically offer the best sensitivity but typically must be used in a stopped format to generate good signal. Use of fluorescent phenols of pKa < 7, such as halogenated coumarins, allows direct screening at neutral pH. The synthesis and characterisation of a set of nine different glycosides of 6-chloro-4-methylumbelliferone are described. The use of these substrates in a pooled format for screening of expressed metagenomic libraries yielded a "hit rate" of 1 in 60. Hits were then readily deconvoluted with the individual substrates in a single plate to identify specific activities within each clone. The use of such a collection of substrates greatly accelerates the screening process.
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Affiliation(s)
- Hong-Ming Chen
- Department of Chemistry, University of British Columbia, 2036 Main Mall, Vancouver, BC, Canada V6T 1Z1
| | - Zachary Armstrong
- Department of Microbiology & Immunology, University of British Columbia, 2036 Main Mall, Vancouver, BC, Canada V6T 1Z1; Centre for High-Throughput Biology, University of British Columbia, 2036 Main Mall, Vancouver, BC, Canada V6T 1Z1
| | - Steven J Hallam
- Department of Microbiology & Immunology, University of British Columbia, 2036 Main Mall, Vancouver, BC, Canada V6T 1Z1
| | - Stephen G Withers
- Department of Chemistry, University of British Columbia, 2036 Main Mall, Vancouver, BC, Canada V6T 1Z1; Centre for High-Throughput Biology, University of British Columbia, 2036 Main Mall, Vancouver, BC, Canada V6T 1Z1.
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13
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Riordan SW, Field JJ, Corkran HM, Dasyam N, Stocker BL, Timmer MSM, Harvey JE, Teesdale-Spittle PH. Synthesis of mycothiol conjugate analogues and evaluation of their antimycobacterial activity. Bioorg Med Chem Lett 2016; 25:2152-5. [PMID: 25881831 DOI: 10.1016/j.bmcl.2015.03.070] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2015] [Revised: 03/02/2015] [Accepted: 03/24/2015] [Indexed: 10/23/2022]
Abstract
Drug-resistant Mycobacterium tuberculosis is a growing health problem. As proof of principle that the bacterial-specific metabolite mycothiol could be used as a delivery agent for antimycobacterial agents, simplified analogues of mycothiol were synthesised containing an S-trichloroethenyl substituted cysteine residue. It was envisaged that uptake of the mycothiol analogue would be followed by release of the known cytotoxin S-trichloroethenyl cysteine by the action of mycothiol S-conjugate amidase or its paralog, mycothiol deacetylase MshB. Promising activity was displayed against model Mycobacteria, although further development will be required to improve selectivity.
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Affiliation(s)
- Scott W Riordan
- Centre for Biodiscovery, Victoria University of Wellington, Wellington 6012, New Zealand
| | - Jessica J Field
- Centre for Biodiscovery, Victoria University of Wellington, Wellington 6012, New Zealand
| | - Hilary M Corkran
- Centre for Biodiscovery, Victoria University of Wellington, Wellington 6012, New Zealand
| | - Nathaniel Dasyam
- Centre for Biodiscovery, Victoria University of Wellington, Wellington 6012, New Zealand
| | - Bridget L Stocker
- Centre for Biodiscovery, Victoria University of Wellington, Wellington 6012, New Zealand
| | - Mattie S M Timmer
- Centre for Biodiscovery, Victoria University of Wellington, Wellington 6012, New Zealand
| | - Joanne E Harvey
- Centre for Biodiscovery, Victoria University of Wellington, Wellington 6012, New Zealand
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14
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Xie M, Byers LD. Solvent and α-secondary kinetic isotope effects on β-glucosidase. BIOCHIMICA ET BIOPHYSICA ACTA-PROTEINS AND PROTEOMICS 2015; 1854:1776-81. [PMID: 25770682 DOI: 10.1016/j.bbapap.2015.02.015] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/07/2015] [Accepted: 02/23/2015] [Indexed: 11/20/2022]
Abstract
β-Glucosidase from sweet almond is a retaining, family 1, glycohydrolase. It is known that glycosylation of the enzyme by aryl glucosides occurs with little, if any, acid catalysis. For this reaction both the solvent and α-secondary kinetic isotope effects are 1.0. However, for the deglucosylation reaction (e.g., kcat for 2,4-dinitrophenyl-β-D-glucopyranoside) there is a small solvent deuterium isotope effect of 1.50 (±0.06) and an α-secondary kinetic isotope effect of 1.12 (±0.03). For aryl glucosides, kcat/KM is very sensitive to the pKa of the phenol leaving group [βlg≈-1; Dale et al., Biochemistry25 (1986) 2522-2529]. With alkyl glucosides the βlg is smaller (between -0.2 and -0.3) but still negative. This, coupled with the small solvent isotope effect on the pH-independent second-order rate constant for the glucosylation of the enzyme with 2,2,2-trifluoroethyl-β-glucoside [D2O(kcat/KM)=1.23 (±0.04)] suggests that there is more glycone-aglycone bond fission than aglycone oxygen protonation in the transition state for alkyl glycoside hydrolysis. The kinetics constants for the partitioning (between water and various alcohols) of the glucosyl-enzyme intermediate, coupled with the rate constants for the forward (hydrolysis) reaction provide an estimate of the stability of the glucosyl-enzyme intermediate. This is a relatively stable species with an energy about 2 to 4 kcal/mol higher than that of the ES complex. This article is part of a Special Issue entitled: Enzyme Transition States from Theory and Experiment.
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Affiliation(s)
- Miaomiao Xie
- Department of Chemistry, Tulane University, New Orleans, LA 70118, USA
| | - Larry D Byers
- Department of Chemistry, Tulane University, New Orleans, LA 70118, USA.
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15
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Beaulieu R, Gottis S, Meyer C, Grand E, Deveaux V, Kovensky J, Stasik I. Cholesteryl and diosgenyl glycosteroids: synthesis and characterization of new smectic liquid crystals. Carbohydr Res 2014; 404:70-8. [PMID: 25665781 DOI: 10.1016/j.carres.2014.11.020] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2014] [Revised: 11/18/2014] [Accepted: 11/22/2014] [Indexed: 11/19/2022]
Abstract
While present in large numbers in nature, studies on the physical chemical aspects of glycosteroids are quite rare and focused on cholesterol, and all compounds studied thus far have shown liquid crystalline properties in a narrow temperature range. New glycosteroids composed by cholesterol or diosgenin and different glycosidic moieties have been synthesized here in order to analyze the influence of the structure on the formation of mesophases. These compounds have been studied by crossed polarized optical microscopy. These studies have revealed that these new glycosteroids form Smetic A liquid crystals in a broad temperature range.
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Affiliation(s)
- Rémi Beaulieu
- Laboratoire de Glycochimie, des Antimicrobiens et des Agro-ressources (LG2A), CNRS FRE 3517, 33 rue Saint-Leu, 80039 Amiens, France; Institut de Chimie de Picardie FR 3085, Université de Picardie-Jules Verne, 33 rue Saint-Leu, 80039 Amiens, France; Semences, Innovation, Protection, Recherche et Environnement (SIPRE), rue des Champs Potez, 62217 Achicourt, France
| | - Sébastien Gottis
- Laboratoire de Glycochimie, des Antimicrobiens et des Agro-ressources (LG2A), CNRS FRE 3517, 33 rue Saint-Leu, 80039 Amiens, France
| | - Claire Meyer
- Laboratoire de Physique des systèmes complexes EA 4663, Université de Picardie-Jules Verne, 33 rue St Leu, 80039 Amiens, France
| | - Eric Grand
- Laboratoire de Glycochimie, des Antimicrobiens et des Agro-ressources (LG2A), CNRS FRE 3517, 33 rue Saint-Leu, 80039 Amiens, France; Institut de Chimie de Picardie FR 3085, Université de Picardie-Jules Verne, 33 rue Saint-Leu, 80039 Amiens, France
| | - Virginie Deveaux
- Semences, Innovation, Protection, Recherche et Environnement (SIPRE), rue des Champs Potez, 62217 Achicourt, France
| | - José Kovensky
- Laboratoire de Glycochimie, des Antimicrobiens et des Agro-ressources (LG2A), CNRS FRE 3517, 33 rue Saint-Leu, 80039 Amiens, France; Institut de Chimie de Picardie FR 3085, Université de Picardie-Jules Verne, 33 rue Saint-Leu, 80039 Amiens, France
| | - Imane Stasik
- Laboratoire de Glycochimie, des Antimicrobiens et des Agro-ressources (LG2A), CNRS FRE 3517, 33 rue Saint-Leu, 80039 Amiens, France; Institut de Chimie de Picardie FR 3085, Université de Picardie-Jules Verne, 33 rue Saint-Leu, 80039 Amiens, France.
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16
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Bernardi S, Fezzardi P, Rispoli G, Sestito SE, Peri F, Sansone F, Casnati A. Clicked and long spaced galactosyl- and lactosylcalix[4]arenes: new multivalent galectin-3 ligands. Beilstein J Org Chem 2014; 10:1672-80. [PMID: 25161726 PMCID: PMC4142870 DOI: 10.3762/bjoc.10.175] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2014] [Accepted: 06/23/2014] [Indexed: 12/31/2022] Open
Abstract
Four novel calix[4]arene-based glycoclusters were synthesized by conjugating the saccharide units to the macrocyclic scaffold using the CuAAC reaction and using long and hydrophilic ethylene glycol spacers. Initially, two galactosylcalix[4]arenes were prepared starting from saccharide units and calixarene cores which differ in the relative dispositions of the alkyne and azido groups. Once the most convenient synthetic pathway was selected, two further lactosylcalix[4]arenes were obtained, one in the cone, the other one in the 1,3-alternate structure. Preliminary studies of the interactions of these novel glycocalixarenes with galectin-3 were carried out by using a lectin-functionalized chip and surface plasmon resonance. These studies indicate a higher affinity of lactosyl- over galactosylcalixarenes. Furthermore, we confirmed that in case of this specific lectin binding the presentation of lactose units on a cone calixarene is highly preferred with respect to its isomeric form in the 1,3-alternate structure.
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Affiliation(s)
- Silvia Bernardi
- Dipartimento di Chimica, Università degli Studi di Parma, Parco Area delle Scienze 17/a, 43124 Parma, Italy
| | - Paola Fezzardi
- Dipartimento di Chimica, Università degli Studi di Parma, Parco Area delle Scienze 17/a, 43124 Parma, Italy
| | - Gabriele Rispoli
- Dipartimento di Chimica, Università degli Studi di Parma, Parco Area delle Scienze 17/a, 43124 Parma, Italy
| | - Stefania E Sestito
- Dipartimento di Biotecnologie e Bioscienze, Università degli Studi di Milano-Bicocca, Piazza della Scienza 2, 20126 Milano, Italy
| | - Francesco Peri
- Dipartimento di Biotecnologie e Bioscienze, Università degli Studi di Milano-Bicocca, Piazza della Scienza 2, 20126 Milano, Italy
| | - Francesco Sansone
- Dipartimento di Chimica, Università degli Studi di Parma, Parco Area delle Scienze 17/a, 43124 Parma, Italy
| | - Alessandro Casnati
- Dipartimento di Chimica, Università degli Studi di Parma, Parco Area delle Scienze 17/a, 43124 Parma, Italy
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17
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Whitfield DM. In a glycosylation reaction how does a hydroxylic nucleophile find the activated anomeric carbon? Carbohydr Res 2014; 403:69-89. [PMID: 24962244 DOI: 10.1016/j.carres.2014.05.021] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2014] [Revised: 05/26/2014] [Accepted: 05/27/2014] [Indexed: 12/23/2022]
Abstract
The mechanism by which nucleophilic hydroxyls are attracted to activated glycopyranosyl donors is not known. Besides the intrinsic attraction of oxygen centred negative dipoles towards the developing electron deficiency at the anomeric carbon only a few suggestions have been given in the literature. By studying the effect on Density Functional Theory (DFT) modelled glycosylation reactions on the presence of polar additives as tested with acetonitrile two possible effects have been identified. One was noted in a previous publication (Carbohydr. Res.2012, 356, 180-190) and two further examples discovered here that suggest that a lone pair of a nucleophile approaching a donor with a β-leaving group from the α-face can act as the antiperiplanar lone pair that assists leaving group departure. This interaction starts at just under a nucleophile C-1 separation of 3Å and has an incipient bond angle of O-5-C-1-Nuc(O or N) of very close to 90° which can be at C-1 with the p-type orbital at C-1-O-5 of the incipient oxacarbenium ion, that is, the LUMO of the activated donor. The 2nd interaction is less well studied and is suggested to be a similar bonding interaction which moves β-face nucleophiles to O-Nuc-C-1-leaving groups angles close to 180°.
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Affiliation(s)
- Dennis M Whitfield
- National Research Council, Human Health Therapeutics, 100 Sussex Drive, Ottawa, ON K1A 0R6, Canada.
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18
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Wang S, Lafont D, Rahkila J, Picod B, Leino R, Vidal S. Glycosylation of ‘basic’ alcohols: methyl 6-(hydroxymethyl)picolinate as a case study. Carbohydr Res 2013; 372:35-46. [DOI: 10.1016/j.carres.2013.02.009] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2013] [Revised: 02/14/2013] [Accepted: 02/15/2013] [Indexed: 11/28/2022]
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19
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Fröhlich RF, Schrank E, Zangger K. 2,2,2-Trifluoroethyl 6-thio-β-D-glucopyranoside as a selective tag for cysteines in proteins. Carbohydr Res 2012; 361:100-4. [PMID: 23000216 PMCID: PMC4067056 DOI: 10.1016/j.carres.2012.08.010] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2012] [Revised: 08/16/2012] [Accepted: 08/17/2012] [Indexed: 11/30/2022]
Abstract
A synthetic route to a trifluoromethyl and thiol containing glucose derivative (2,2,2-trifluoroethyl 6-thio-β-d-glucopyranoside) is presented, which is based on microwave-assisted Fischer glycosylation under increased pressure. This water-soluble, neutral thiol-compound can be used to selectively introduce a fluorine probe for 19F NMR spectroscopy on cysteines in proteins. It can be attached under mild conditions in an aqueous environment without the risk of denaturing the protein. This tag has been applied to determine the redox-state of two cysteine residues in a bacterial transcription activator. Qualitative information about the solvent accessibility can be obtained from F-19 solvent PREs.
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Affiliation(s)
| | | | - Klaus Zangger
- Corresponding author. Tel.: +43 316 380 8673; fax: +43 316 380 9840.
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20
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Twibanire JDK, Omran RP, Grindley TB. Facile Synthesis of a Library of Lyme Disease Glycolipid Antigens. Org Lett 2012; 14:3909-11. [DOI: 10.1021/ol301697c] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Jean-d’Amour K. Twibanire
- Department of Chemistry, Dalhousie University, 6274 Coburg Road, P.O. Box 15000, Halifax, NS, Canada B3H 4R2
| | - Raha Parvizi Omran
- Department of Chemistry, Dalhousie University, 6274 Coburg Road, P.O. Box 15000, Halifax, NS, Canada B3H 4R2
| | - T. Bruce Grindley
- Department of Chemistry, Dalhousie University, 6274 Coburg Road, P.O. Box 15000, Halifax, NS, Canada B3H 4R2
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21
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Cecioni S, Matthews SE, Blanchard H, Praly JP, Imberty A, Vidal S. Synthesis of lactosylated glycoclusters and inhibition studies with plant and human lectins. Carbohydr Res 2012; 356:132-41. [DOI: 10.1016/j.carres.2012.02.006] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2011] [Revised: 02/07/2012] [Accepted: 02/09/2012] [Indexed: 12/20/2022]
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22
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A high-yielding synthesis of allyl glycosides from peracetylated glycosyl donors. Carbohydr Res 2012; 357:147-50. [PMID: 22677518 DOI: 10.1016/j.carres.2012.05.008] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2012] [Revised: 05/07/2012] [Accepted: 05/10/2012] [Indexed: 11/22/2022]
Abstract
β-Configured peracetylated sugars are often used as easily accessible glycosyl donors that are typically activated with common Lewis acids such as boron trifluoride or trimethylsilyltrifluoromethane sulfonate. Often these glycosylations occur with unsatisfactory yields due to incomplete reactions or extensive byproduct formation, primarily as a result of loss of an additional acetyl group generating partially unprotected glycosides. Here we report a simple glycosylation-reacetylation protocol for the generation of predominantly β-configured peracetylated allyl glucoside, -galactoside, -lactoside, and -maltoside with substantially improved reaction yields.
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23
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Cecioni S, Praly JP, Matthews SE, Wimmerová M, Imberty A, Vidal S. Rational Design and Synthesis of Optimized Glycoclusters for Multivalent Lectin-Carbohydrate Interactions: Influence of the Linker Arm. Chemistry 2012; 18:6250-63. [DOI: 10.1002/chem.201200010] [Citation(s) in RCA: 91] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2012] [Indexed: 12/14/2022]
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24
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Cecioni S, Goyard D, Praly JP, Vidal S. Synthesis of azido-functionalized carbohydrates for the design of glycoconjugates. Methods Mol Biol 2012; 808:57-68. [PMID: 22057517 DOI: 10.1007/978-1-61779-373-8_4] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
As carbohydrates play a major role in numerous biological processes through their interactions with lectins and also appear as one of the most crucial post-translational modifications of proteins, chemists have developed several approaches for the design of glycoconjugates based on a series of conjugation methodologies. The recent development of copper(I)-catalyzed azide-alkyne cycloaddition (CuACC) paved the way to a novel conjugation strategy in which azido-functionalized carbohydrate derivatives can be readily connected to alkyne-functionalized (bio)molecules. This so-called "click chemistry" methodology has now found numerous applications both in chemistry and biology. The azido moiety can be introduced either directly at the anomeric carbon of the carbohydrate derivative, or attached to a spacer arm. We describe here the syntheses of 2,3,4,6-tetra-O-acetyl-β-D: -glucopyranosyl azide as well as 1-azido-3,6-dioxaoct-8-yl 2,3,4,6-tetra-O-acetyl-β-D: -galactopyranoside and 1-azido-3,6-dioxaoct-8-yl 2,3,6,2',3',4',6'-hepta-O-acetyl-β-D: -lactoside. These molecules can then be used in the construction of glycoconjugates to find applications in chemical biology.
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Affiliation(s)
- Samy Cecioni
- Laboratoire de Chimie Organique 2, Institut de Chimie et Biochimie Moléculaires et Supramoléculaires, Glycochimie, UMR5246, CNRS, Université Lyon 1, Villeurbanne, France
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25
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Repetto E, Manzano VE, Uhrig ML, Varela O. Synthesis of Branched Dithiotrisaccharides via Ring-Opening Reaction of Sugar Thiiranes. J Org Chem 2011; 77:253-65. [DOI: 10.1021/jo2018685] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Evangelina Repetto
- CIHIDECAR-CONICET, Departamento de Química Orgánica,
Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Argentina
| | - Verónica E. Manzano
- CIHIDECAR-CONICET, Departamento de Química Orgánica,
Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Argentina
| | - María Laura Uhrig
- CIHIDECAR-CONICET, Departamento de Química Orgánica,
Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Argentina
| | - Oscar Varela
- CIHIDECAR-CONICET, Departamento de Química Orgánica,
Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Argentina
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Cecioni S, Oerthel V, Iehl J, Holler M, Goyard D, Praly JP, Imberty A, Nierengarten JF, Vidal S. Synthesis of dodecavalent fullerene-based glycoclusters and evaluation of their binding properties towards a bacterial lectin. Chemistry 2011; 17:3252-61. [PMID: 21328503 DOI: 10.1002/chem.201003258] [Citation(s) in RCA: 105] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2010] [Indexed: 02/03/2023]
Abstract
Multivalency is playing a major role in biological processes and particularly in lectin-carbohydrate interactions. The design of high-affinity ligands of lectins should provide molecules capable of interfering with these biological processes and potentially inhibit bacterial or viral infections. Azide-alkyne "click" chemistry was applied to the synthesis of dodecavalent fullerene-based glycoclusters. The conjugation could be efficiently performed from alkyne or azide functions on either partners (i.e. hexakis-fullerene adduct or glycoside). PA-IL is a bacterial lectin from the opportunistic pathogen Pseudomonas aeruginosa and is involved in the recognition of glycoconjugates on human tissues. The glycoclusters obtained were evaluated as ligands of PA-IL and for their potential for competing with its binding to glycosylated surfaces. The affinities measured by hemagglutination inhibition assay (HIA), enzyme-linked lectin assay (ELLA), and surface plasmon resonance (SPR) displayed a significant "glycoside cluster effect" with up to a 12,000-fold increase in binding when comparing a monovalent carbohydrate reference probe with a dodecavalent fullerene-based glycocluster, albeit with some differences depending on the analytical technique.
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Affiliation(s)
- Samy Cecioni
- Institut de Chimie et Biochimie Moléculaires et Supramoléculaires, Laboratoire de Chimie, Organique 2-Glycochimie, UMR 5246, Université Claude Bernard Lyon 1 and CNRS, 43 Boulevard du 11 Novembre 1918, 69622, Villeurbanne, France
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C,N-chelated organotin(IV) trifluoroacetates. Instability of the mono- and diorganotin(IV) derivatives. J Organomet Chem 2011. [DOI: 10.1016/j.jorganchem.2010.09.050] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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28
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Pilgrim W, Murphy PV. SnCl4- and TiCl4-Catalyzed Anomerization of Acylated O- and S-Glycosides: Analysis of Factors That Lead to Higher α:β Anomer Ratios and Reaction Rates. J Org Chem 2010; 75:6747-55. [DOI: 10.1021/jo101090f] [Citation(s) in RCA: 75] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Wayne Pilgrim
- School of Chemistry, National University of Ireland, Galway, Ireland
- Centre for Synthesis and Chemical Biology, School of Chemistry and Chemical Biology, University College Dublin, Belfield, Dublin 4, Ireland
| | - Paul V. Murphy
- School of Chemistry, National University of Ireland, Galway, Ireland
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Synthesis of alkyl and cycloalkyl α-d-mannopyranosides and derivatives thereof and their evaluation in the mycobacterial mannosyltransferase assay. Carbohydr Res 2010; 345:1339-47. [DOI: 10.1016/j.carres.2010.03.011] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2010] [Revised: 03/05/2010] [Accepted: 03/09/2010] [Indexed: 10/19/2022]
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30
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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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