1
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Kumar N, Gurawa A, Yadav A, Kashyap S. Influence of C-4 Axial/Equatorial Configuration and Neighboring Group/Remote Group Participation (NGP/RGP) Driven Conformational Evidence in Chemoselective Activation of Glycals. Org Lett 2024. [PMID: 39116290 DOI: 10.1021/acs.orglett.4c02724] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/10/2024]
Abstract
We herein reveal the possibility of the C-4 neighboring group/remote group participation (NGP/RGP) facilitating the stabilization of the anomeric center via dioxolenium intermediates in the chemoselective activation of glycal donors. We further realized that the axial/equatorial configuration of the C-4 group in the galacto- and gluco-glycal series enables diverse pathways to give direct 1,2-addition or Ferrier rearrangement, respectively. A proof-of-principle for stereoselective glycosylation was amply illustrated by employing carbohydrates, amino acids, natural products, and bioactive molecules to develop 2-deoxy-glycan analogs.
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Affiliation(s)
- Nitin Kumar
- Carbohydrate Chemistry Research Laboratory (CCRL), Department of Chemistry, Malaviya National Institute of Technology Jaipur 302017, India
| | - Aakanksha Gurawa
- Institut Charles Gerhardt Montpellier, Univ Montpellier, CNRS, 1919, route de Mende, 34294 Cedex 5 Montpellier, France
| | - Ankit Yadav
- Carbohydrate Chemistry Research Laboratory (CCRL), Department of Chemistry, Malaviya National Institute of Technology Jaipur 302017, India
| | - Sudhir Kashyap
- Carbohydrate Chemistry Research Laboratory (CCRL), Department of Chemistry, Malaviya National Institute of Technology Jaipur 302017, India
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2
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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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3
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Rai D, Kulkarni SS. Total Synthesis of Trisaccharide Repeating Unit of Staphylococcus aureus Type 8 (CP8) Capsular Polysaccharide. Org Lett 2023; 25:1509-1513. [PMID: 36852946 DOI: 10.1021/acs.orglett.3c00290] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/01/2023]
Abstract
Herein, we report a highly efficient total synthesis of Staphylococcus aureus type 8 trisaccharide repeating unit in a lesser number of steps and high stereoselectivity. The complex trisaccharide contains rare amino sugars, viz., d-fucosamine, l-fucosamine, and 2-acetamido d-mannuronic acid. The installation of consecutive sterically hindered 1,2-cis glycosidic linkages, especially β-mannosylation, is the key challenge in this synthesis. The total synthesis of target molecule was completed via a longest linear sequence of 18 steps in 7.1% overall yield.
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Affiliation(s)
- Diksha Rai
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India
| | - Suvarn S Kulkarni
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India
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4
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Elferink H, Remmerswaal WA, Houthuijs KJ, Jansen O, Hansen T, Rijs AM, Berden G, Martens J, Oomens J, Codée JDC, Boltje TJ. Competing C-4 and C-5-Acyl Stabilization of Uronic Acid Glycosyl Cations. Chemistry 2022; 28:e202201724. [PMID: 35959853 PMCID: PMC9825916 DOI: 10.1002/chem.202201724] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2022] [Indexed: 01/11/2023]
Abstract
Uronic acids are carbohydrates carrying a terminal carboxylic acid and have a unique reactivity in stereoselective glycosylation reactions. Herein, the competing intramolecular stabilization of uronic acid cations by the C-5 carboxylic acid or the C-4 acetyl group was studied with infrared ion spectroscopy (IRIS). IRIS reveals that a mixture of bridged ions is formed, in which the mixture is driven towards the C-1,C-5 dioxolanium ion when the C-5,C-2-relationship is cis, and towards the formation of the C-1,C-4 dioxepanium ion when this relation is trans. Isomer-population analysis and interconversion barrier computations show that the two bridged structures are not in dynamic equilibrium and that their ratio parallels the density functional theory computed stability of the structures. These studies reveal how the intrinsic interplay of the different functional groups influences the formation of the different regioisomeric products.
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Affiliation(s)
- Hidde Elferink
- Institute for Molecules and MaterialsSynthetic Organic ChemistryRadboud University NijmegenHeyendaalseweg 1356525 AJNijmegen (TheNetherlands
| | - Wouter A. Remmerswaal
- Leiden Institute of ChemistryLeiden UniversityEinsteinweg 552333 CCLeiden (TheNetherlands
| | - Kas J. Houthuijs
- Institute for Molecules and MaterialsFELIX LaboratoryRadboud University NijmegenToernooiveld 76525 EDNijmegen (TheNetherlands
| | - Oscar Jansen
- Institute for Molecules and MaterialsFELIX LaboratoryRadboud University NijmegenToernooiveld 76525 EDNijmegen (TheNetherlands
| | - Thomas Hansen
- Leiden Institute of ChemistryLeiden UniversityEinsteinweg 552333 CCLeiden (TheNetherlands,Departament de Química Inorgànica i Orgànica & IQTUBUniversitat de Barcelona08028BarcelonaSpain
| | - Anouk M. Rijs
- Institute for Molecules and MaterialsFELIX LaboratoryRadboud University NijmegenToernooiveld 76525 EDNijmegen (TheNetherlands,Division of BioAnalytical ChemistryDepartment of Chemistry and Pharmaceutical SciencesAIMMS Amsterdam Institute of Molecular and Life SciencesVrije Univeristeit AmsterdamDe Boelelaan 10851081 HVAmsterdam (TheNetherlands
| | - Giel Berden
- Institute for Molecules and MaterialsFELIX LaboratoryRadboud University NijmegenToernooiveld 76525 EDNijmegen (TheNetherlands
| | - Jonathan Martens
- Institute for Molecules and MaterialsFELIX LaboratoryRadboud University NijmegenToernooiveld 76525 EDNijmegen (TheNetherlands
| | - Jos Oomens
- Institute for Molecules and MaterialsFELIX LaboratoryRadboud University NijmegenToernooiveld 76525 EDNijmegen (TheNetherlands
| | - Jeroen D. C. Codée
- Leiden Institute of ChemistryLeiden UniversityEinsteinweg 552333 CCLeiden (TheNetherlands
| | - Thomas J. Boltje
- Institute for Molecules and MaterialsSynthetic Organic ChemistryRadboud University NijmegenHeyendaalseweg 1356525 AJNijmegen (TheNetherlands
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5
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Alex C, Demchenko AV. Direct Synthesis of Glycans Containing Challenging ManNAcA Residues. J Org Chem 2021; 87:271-280. [PMID: 34928148 DOI: 10.1021/acs.joc.1c02351] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A method for direct, highly stereoselective synthesis of glycans containing β-linked d-mannosaminuronic acid (ManNAcA) residues is reported herein, among which is the capsular polysaccharide of Staphylococcus aureus type 8. Previous chemical syntheses of this glycan relied on indirect methods comprising glucosylation followed by a multistep epimerization and oxidation sequence. The high β-stereocontrol with direct glycosidation of 3-O-picoloylated ManNAcA donors was achieved using the H-bond-mediated aglycone delivery (HAD) reaction. A method to achieve complete α-ManNAcA stereoselectivity with 3-O-benzoylated donors is also reported.
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Affiliation(s)
- Catherine Alex
- Department of Chemistry and Biochemistry, University of Missouri─St. Louis, One University Boulevard, St. Louis, Missouri 63121, United States
| | - Alexei V Demchenko
- Department of Chemistry and Biochemistry, University of Missouri─St. Louis, One University Boulevard, St. Louis, Missouri 63121, United States.,Department of Chemistry, Saint Louis University, 3501 Laclede Avenue, St. Louis, Missouri 63103, United States
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6
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Alex C, Demchenko AV. Recent Advances in Stereocontrolled Mannosylation: Focus on Glycans Comprising Acidic and/or Amino Sugars. CHEM REC 2021; 21:3278-3294. [PMID: 34661961 DOI: 10.1002/tcr.202100201] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2021] [Revised: 09/20/2021] [Accepted: 09/21/2021] [Indexed: 12/20/2022]
Abstract
The main focus of this review is to describe accomplishments made in the stereoselective synthesis of β-linked mannosides functionalized with carboxyls or amines/amides. These ManNAc, ManA and ManNAcA residues found in many glycoconjugates, bacterial polysaccharides, and alginates have consistently captured interest of the glycoscience community both due to synthetic challenge and therapeutic potential.
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Affiliation(s)
- Catherine Alex
- Department of Chemistry and Biochemistry, University of Missouri - St. Louis, One University Blvd., St. Louis, MO 63121, USA
| | - Alexei V Demchenko
- Department of Chemistry and Biochemistry, University of Missouri - St. Louis, One University Blvd., St. Louis, MO 63121, USA.,Department of Chemistry, Saint Louis University, 3501 Laclede Ave, St. Louis, MO 63103, USA
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7
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Fittolani G, Tyrikos-Ergas T, Vargová D, Chaube MA, Delbianco M. Progress and challenges in the synthesis of sequence controlled polysaccharides. Beilstein J Org Chem 2021; 17:1981-2025. [PMID: 34386106 PMCID: PMC8353590 DOI: 10.3762/bjoc.17.129] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2021] [Accepted: 07/22/2021] [Indexed: 01/15/2023] Open
Abstract
The sequence, length and substitution of a polysaccharide influence its physical and biological properties. Thus, sequence controlled polysaccharides are important targets to establish structure-properties correlations. Polymerization techniques and enzymatic methods have been optimized to obtain samples with well-defined substitution patterns and narrow molecular weight distribution. Chemical synthesis has granted access to polysaccharides with full control over the length. Here, we review the progress towards the synthesis of well-defined polysaccharides. For each class of polysaccharides, we discuss the available synthetic approaches and their current limitations.
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Affiliation(s)
- Giulio Fittolani
- Department of Biomolecular Systems, Max Planck Institute of Colloids and Interfaces, Am Mühlenberg 1, 14476 Potsdam, Germany
- Department of Chemistry and Biochemistry, Freie Universität Berlin, Arnimallee 22, 14195 Berlin, Germany
| | - Theodore Tyrikos-Ergas
- Department of Biomolecular Systems, Max Planck Institute of Colloids and Interfaces, Am Mühlenberg 1, 14476 Potsdam, Germany
- Department of Chemistry and Biochemistry, Freie Universität Berlin, Arnimallee 22, 14195 Berlin, Germany
| | - Denisa Vargová
- Department of Biomolecular Systems, Max Planck Institute of Colloids and Interfaces, Am Mühlenberg 1, 14476 Potsdam, Germany
| | - Manishkumar A Chaube
- Department of Biomolecular Systems, Max Planck Institute of Colloids and Interfaces, Am Mühlenberg 1, 14476 Potsdam, Germany
| | - Martina Delbianco
- Department of Biomolecular Systems, Max Planck Institute of Colloids and Interfaces, Am Mühlenberg 1, 14476 Potsdam, Germany
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8
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Wang S, Chen C, Gadi MR, Saikam V, Liu D, Zhu H, Bollag R, Liu K, Chen X, Wang F, Wang PG, Ling P, Guan W, Li L. Chemoenzymatic modular assembly of O-GalNAc glycans for functional glycomics. Nat Commun 2021; 12:3573. [PMID: 34117223 PMCID: PMC8196059 DOI: 10.1038/s41467-021-23428-x] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2020] [Accepted: 04/29/2021] [Indexed: 01/16/2023] Open
Abstract
O-GalNAc glycans (or mucin O-glycans) play pivotal roles in diverse biological and pathological processes, including tumor growth and progression. Structurally defined O-GalNAc glycans are essential for functional studies but synthetic challenges and their inherent structural diversity and complexity have limited access to these compounds. Herein, we report an efficient and robust chemoenzymatic modular assembly (CEMA) strategy to construct structurally diverse O-GalNAc glycans. The key to this strategy is the convergent assembly of O-GalNAc cores 1-4 and 6 from three chemical building blocks, followed by enzymatic diversification of the cores by 13 well-tailored enzyme modules. A total of 83 O-GalNAc glycans presenting various natural glycan epitopes are obtained and used to generate a unique synthetic mucin O-glycan microarray. Binding specificities of glycan-binding proteins (GBPs) including plant lectins and selected anti-glycan antibodies towards these O-GalNAc glycans are revealed by this microarray, promoting their applicability in functional O-glycomics. Serum samples from colorectal cancer patients and healthy controls are assayed using the array reveal higher bindings towards less common cores 3, 4, and 6 than abundant cores 1 and 2, providing insights into O-GalNAc glycan structure-activity relationships.
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Affiliation(s)
- Shuaishuai Wang
- grid.256304.60000 0004 1936 7400Department of Chemistry, Georgia State University, Atlanta, GA 30303 USA
| | - Congcong Chen
- grid.256304.60000 0004 1936 7400Department of Chemistry, Georgia State University, Atlanta, GA 30303 USA ,grid.27255.370000 0004 1761 1174National Glycoengineering Research Center, Shandong Provincial Key Laboratory of Glycochemistry and Glycobiology, Shandong University, Qingdao, 266237 Shandong China ,grid.495839.aShandong Academy of Pharmaceutical Science, Key Laboratory of Biopharmaceuticals, Engineering Laboratory of Polysaccharide Drugs, National-Local Joint Engineering Laboratory of Polysaccharide Drugs, Jinan, 250101 Shandong China
| | - Madhusudhan Reddy Gadi
- grid.256304.60000 0004 1936 7400Department of Chemistry, Georgia State University, Atlanta, GA 30303 USA
| | - Varma Saikam
- grid.256304.60000 0004 1936 7400Department of Chemistry, Georgia State University, Atlanta, GA 30303 USA
| | - Ding Liu
- grid.256304.60000 0004 1936 7400Department of Chemistry, Georgia State University, Atlanta, GA 30303 USA
| | - He Zhu
- grid.256304.60000 0004 1936 7400Department of Chemistry, Georgia State University, Atlanta, GA 30303 USA
| | - Roni Bollag
- grid.410427.40000 0001 2284 9329Georgia Cancer Center, Augusta University, Augusta, GA 30912 USA
| | - Kebin Liu
- grid.410427.40000 0001 2284 9329Department of Biochemistry and Molecular Biology, Medical College of Georgia, Augusta, GA 30912 USA
| | - Xi Chen
- grid.27860.3b0000 0004 1936 9684Department of Chemistry, University of California, Davis, CA 95616 USA
| | - Fengshan Wang
- grid.27255.370000 0004 1761 1174Key Laboratory of Chemical Biology (Ministry of Education), Institute of Biochemical and Biotechnological Drug, School of Pharmaceutical Science, Shandong University, Jinan, 250012 Shandong China
| | - Peng George Wang
- grid.256304.60000 0004 1936 7400Department of Chemistry, Georgia State University, Atlanta, GA 30303 USA ,grid.263817.9Present Address: School of Medicine, Southern University of Science and Technology, Shenzhen, 518055 Guangdong China
| | - Peixue Ling
- grid.27255.370000 0004 1761 1174National Glycoengineering Research Center, Shandong Provincial Key Laboratory of Glycochemistry and Glycobiology, Shandong University, Qingdao, 266237 Shandong China ,grid.495839.aShandong Academy of Pharmaceutical Science, Key Laboratory of Biopharmaceuticals, Engineering Laboratory of Polysaccharide Drugs, National-Local Joint Engineering Laboratory of Polysaccharide Drugs, Jinan, 250101 Shandong China ,grid.27255.370000 0004 1761 1174Key Laboratory of Chemical Biology (Ministry of Education), Institute of Biochemical and Biotechnological Drug, School of Pharmaceutical Science, Shandong University, Jinan, 250012 Shandong China
| | - Wanyi Guan
- grid.256884.50000 0004 0605 1239College of Life Science, Hebei Normal University, Shijiazhuang, 050024 Hebei China
| | - Lei Li
- grid.256304.60000 0004 1936 7400Department of Chemistry, Georgia State University, Atlanta, GA 30303 USA
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9
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Dohi H, Sakurai R, Tamura M, Komai R, Nishida Y. Evaluating the reactivity and stereoselectivity of salicyl-type thioglycosides as non-malodorous thioglycoside alternatives for oligosaccharide synthesis. J Carbohydr Chem 2021. [DOI: 10.1080/07328303.2021.1921787] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Affiliation(s)
- Hirofumi Dohi
- Applied Biological Chemistry Field of Biomolecular Chemistry, Graduate School of Horticulture, Chiba University, Chiba, Japan
- Molecular Chirality Research Center, Chiba University, Chiba, Japan
| | - Risa Sakurai
- Applied Biological Chemistry Field of Biomolecular Chemistry, Graduate School of Horticulture, Chiba University, Chiba, Japan
| | - Manami Tamura
- Applied Biological Chemistry Field of Biomolecular Chemistry, Graduate School of Horticulture, Chiba University, Chiba, Japan
| | - Ryota Komai
- Applied Biological Chemistry Field of Biomolecular Chemistry, Graduate School of Horticulture, Chiba University, Chiba, Japan
| | - Yoshihiro Nishida
- Applied Biological Chemistry Field of Biomolecular Chemistry, Graduate School of Horticulture, Chiba University, Chiba, Japan
- Molecular Chirality Research Center, Chiba University, Chiba, Japan
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10
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Alex C, Visansirikul S, Demchenko AV. A versatile approach to the synthesis of glycans containing mannuronic acid residues. Org Biomol Chem 2021; 19:2731-2743. [PMID: 33687051 DOI: 10.1039/d1ob00188d] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
Reported herein is a new method for a highly effective synthesis of β-glycosides from mannuronic acid donors equipped with the 3-O-picoloyl group. The stereocontrol of glycosylations was achieved by means of the H-bond-mediated aglycone delivery (HAD). The method was utilized for the synthesis of a tetrasaccharide linked viaβ-(1 → 3)-mannuronic linkages. We have also investigated 3,6-lactonized glycosyl donors that provided moderate to high β-manno stereoselectivity in glycosylations. A method to achieve complete α-manno stereoselectivity with mannuronic acid donors equipped with 3-O-benzoyl group is also reported.
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Affiliation(s)
- Catherine Alex
- Department of Chemistry and Biochemistry, University of Missouri - St Louis, One University Boulevard, St Louis, MO 63121, USA.
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11
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Zeng C, Sun B, Cao X, Zhu H, Oluwadahunsi OM, Liu D, Zhu H, Zhang J, Zhang Q, Zhang G, Gibbons CA, Liu Y, Zhou J, Wang PG. Chemical Synthesis of Homogeneous Human E-Cadherin N-Linked Glycopeptides: Stereoselective Convergent Glycosylation and Chemoselective Solid-Phase Aspartylation. Org Lett 2020; 22:8349-8353. [PMID: 33045166 DOI: 10.1021/acs.orglett.0c02971] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
We report herein an efficient chemical synthesis of homogeneous human E-cadherin N-linked glycopeptides consisting of a heptapeptide sequence adjacent to the Asn-633 N-glycosylation site with representative N-glycan structures, including a conserved trisaccharide, a core-fucosylated tetrasaccharide, and a complex-type biantennary octasaccharide. The key steps are a chemoselective on-resin aspartylation using a pseudoproline-containing peptide and stereoselective glycosylation using glycosyl fluororide as a donor. This synthetic strategy demonstrates potential utility in accessing a wide range of homogeneous N-linked glycopeptides for the examination of their biological function.
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Affiliation(s)
- Chen Zeng
- School of Medicine, Southern University of Science and Technology, Shenzhen 518055, China
| | - Bin Sun
- School of Medicine, Southern University of Science and Technology, Shenzhen 518055, China
| | - Xuefeng Cao
- Department of Chemistry, Georgia State University, Atlanta, Georgia 30303, United States
| | - Hailiang Zhu
- Department of Chemistry, Georgia State University, Atlanta, Georgia 30303, United States
| | | | - Ding Liu
- Department of Chemistry, Georgia State University, Atlanta, Georgia 30303, United States
| | - He Zhu
- Department of Chemistry, Georgia State University, Atlanta, Georgia 30303, United States
| | - Jiabin Zhang
- Department of Chemistry, Georgia State University, Atlanta, Georgia 30303, United States
| | - Qing Zhang
- Department of Chemistry, Georgia State University, Atlanta, Georgia 30303, United States
| | - Gaolan Zhang
- Department of Chemistry, Georgia State University, Atlanta, Georgia 30303, United States
| | | | - Yunpeng Liu
- Department of Chemistry, Georgia State University, Atlanta, Georgia 30303, United States
| | - Jun Zhou
- Department of Chemistry, Georgia State University, Atlanta, Georgia 30303, United States.,R&D Headquarters, WuXi AppTec, Shanghai 200131, China
| | - Peng George Wang
- School of Medicine, Southern University of Science and Technology, Shenzhen 518055, China.,Department of Chemistry, Georgia State University, Atlanta, Georgia 30303, United States
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12
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Xu K, Man Q, Zhang Y, Guo J, Liu Y, Fu Z, Zhu Y, Li Y, Zheng M, Ding N. Investigation of the remote acyl group participation in glycosylation from conformational perspectives by using trichloroacetimidate as the acetyl surrogate. Org Chem Front 2020. [DOI: 10.1039/d0qo00363h] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
The remote acyl group participation in glycosylation was studied by using trichloroacetimidate as the acetyl surrogate. The bridging participation intermediates were systematically trapped, and DFT calculations were applied to explain the results.
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13
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van der Vorm S, Hansen T, van Hengst JMA, Overkleeft HS, van der Marel GA, Codée JDC. Acceptor reactivity in glycosylation reactions. Chem Soc Rev 2019; 48:4688-4706. [DOI: 10.1039/c8cs00369f] [Citation(s) in RCA: 79] [Impact Index Per Article: 15.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
The effect of the reactivity of the glycosyl acceptor on the outcome of glycosylation reactions is reviewed.
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Affiliation(s)
| | - Thomas Hansen
- Leiden Institute of Chemistry
- Leiden University
- 2333 CC Leiden
- The Netherlands
| | | | | | | | - Jeroen D. C. Codée
- Leiden Institute of Chemistry
- Leiden University
- 2333 CC Leiden
- The Netherlands
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14
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Dimitriou E, Miller GJ. Exploring a glycosylation methodology for the synthesis of hydroxamate-modified alginate building blocks. Org Biomol Chem 2019; 17:9321-9335. [DOI: 10.1039/c9ob02053e] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Mixed sequence, C6-hydroxamate-modified alginate disaccharides are prepared using NIS/TMSOTf glycosylation.
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Affiliation(s)
- Eleni Dimitriou
- Lennard-Jones Laboratory
- School of Chemical and Physical Sciences
- Keele University
- Keele
- UK
| | - Gavin J. Miller
- Lennard-Jones Laboratory
- School of Chemical and Physical Sciences
- Keele University
- Keele
- UK
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15
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16
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Dohi H, Komai R, Sakai H, Komuro H, Nishida Y. Convenient use of ortho-formylphenyl thioglycoside for regioselective conjugation with glycosyl acceptors towards regioselective 1,2-cis-glycosylation. J Carbohydr Chem 2017. [DOI: 10.1080/07328303.2017.1403612] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- Hirofumi Dohi
- Department of Bioresource Science, Graduate School of Horticulture
- Molecular Chirality Research Center
| | - Ryota Komai
- Department of Nanoscience, Graduate School of Advanced Integration of Science, Chiba University, Chiba, Japan
| | - Hidetoshi Sakai
- Department of Nanoscience, Graduate School of Advanced Integration of Science, Chiba University, Chiba, Japan
| | - Haruka Komuro
- Department of Nanoscience, Graduate School of Advanced Integration of Science, Chiba University, Chiba, Japan
| | - Yoshihiro Nishida
- Molecular Chirality Research Center
- Department of Nanoscience, Graduate School of Advanced Integration of Science, Chiba University, Chiba, Japan
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17
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Le Mai Hoang K, He JX, Báti G, Chan-Park MB, Liu XW. A minimalist approach to stereoselective glycosylation with unprotected donors. Nat Commun 2017; 8:1146. [PMID: 29079775 PMCID: PMC5660076 DOI: 10.1038/s41467-017-01073-7] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2017] [Accepted: 08/16/2017] [Indexed: 12/30/2022] Open
Abstract
Mechanistic study of carbohydrate interactions in biological systems calls for the chemical synthesis of these complex structures. Owing to the specific stereo-configuration at each anomeric linkage and diversity in branching, significant breakthroughs in recent years have focused on either stereoselective glycosylation methods or facile assembly of glycan chains. Here, we introduce the unification approach that offers both stereoselective glycosidic bond formation and removal of protection/deprotection steps required for further elongation. Using dialkylboryl triflate as an in situ masking reagent, a wide array of glycosyl donors carrying one to three unprotected hydroxyl groups reacts with various glycosyl acceptors to furnish the desired products with good control over regioselectivity and stereoselectivity. This approach demonstrates the feasibility of straightforward access to important structural scaffolds for complex glycoconjugate synthesis.
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Affiliation(s)
- Kim Le Mai Hoang
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, 21 Nanyang Link, Singapore, 637371, Singapore
| | - Jing-Xi He
- School of Chemical and Biomedical Engineering, Nanyang Technological University, 62 Nanyang Drive, Singapore, 637459, Singapore
| | - Gábor Báti
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, 21 Nanyang Link, Singapore, 637371, Singapore
| | - Mary B Chan-Park
- School of Chemical and Biomedical Engineering, Nanyang Technological University, 62 Nanyang Drive, Singapore, 637459, Singapore.
| | - Xue-Wei Liu
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, 21 Nanyang Link, Singapore, 637371, Singapore.
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18
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van der Vorm S, Hansen T, Overkleeft HS, van der Marel GA, Codée JDC. The influence of acceptor nucleophilicity on the glycosylation reaction mechanism. Chem Sci 2017; 8:1867-1875. [PMID: 28553477 PMCID: PMC5424809 DOI: 10.1039/c6sc04638j] [Citation(s) in RCA: 113] [Impact Index Per Article: 16.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2016] [Accepted: 11/08/2016] [Indexed: 01/20/2023] Open
Abstract
A set of model nucleophiles of gradually changing nucleophilicity is used to probe the glycosylation reaction mechanism. Glycosylations of ethanol-based acceptors, bearing varying amounts of fluorine atoms, report on the dependency of the stereochemistry in condensation reactions on the nucleophilicity of the acceptor. Three different glycosylation systems were scrutinized, that differ in the reaction mechanism, that - putatively - prevails during the coupling reaction. It is revealed that the stereoselectivity in glycosylations of benzylidene protected glucose donors are very susceptible to acceptor nucleophilicity whereas condensations of benzylidene mannose and mannuronic acid donors represent more robust glycosylation systems in terms of diastereoselectivity. The change in stereoselectivity with decreasing acceptor nucleophilicity is related to a change in reaction mechanism shifting from the SN2 side to the SN1 side of the reactivity spectrum. Carbohydrate acceptors are examined and the reactivity-selectivity profile of these nucleophiles mirrored those of the model acceptors studied. The set of model ethanol acceptors thus provides a simple and effective "toolbox" to investigate glycosylation reaction mechanisms and report on the robustness of glycosylation protocols.
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Affiliation(s)
- S van der Vorm
- Leiden Institute of Chemistry , Leiden University , Einsteinweg 55 , 2333 CC Leiden , The Netherlands .
| | - T Hansen
- Leiden Institute of Chemistry , Leiden University , Einsteinweg 55 , 2333 CC Leiden , The Netherlands .
| | - H S Overkleeft
- Leiden Institute of Chemistry , Leiden University , Einsteinweg 55 , 2333 CC Leiden , The Netherlands .
| | - G A van der Marel
- Leiden Institute of Chemistry , Leiden University , Einsteinweg 55 , 2333 CC Leiden , The Netherlands .
| | - J D C Codée
- Leiden Institute of Chemistry , Leiden University , Einsteinweg 55 , 2333 CC Leiden , The Netherlands .
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19
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Zhou J, Lv S, Zhang D, Xia F, Hu W. Deactivating Influence of 3-O-Glycosyl Substituent on Anomeric Reactivity of Thiomannoside Observed in Oligomannoside Synthesis. J Org Chem 2017; 82:2599-2621. [DOI: 10.1021/acs.joc.6b03017] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Affiliation(s)
- Jun Zhou
- Shanghai Engineering Research
Center of Molecular Therapeutics and New Drug Development, School
of Chemistry and Molecular Engineering, East China Normal University, 3663 North Zhongshan Road, Shanghai 200062, China
| | - Siying Lv
- Shanghai Engineering Research
Center of Molecular Therapeutics and New Drug Development, School
of Chemistry and Molecular Engineering, East China Normal University, 3663 North Zhongshan Road, Shanghai 200062, China
| | - Dan Zhang
- Shanghai Engineering Research
Center of Molecular Therapeutics and New Drug Development, School
of Chemistry and Molecular Engineering, East China Normal University, 3663 North Zhongshan Road, Shanghai 200062, China
| | - Fei Xia
- Shanghai Engineering Research
Center of Molecular Therapeutics and New Drug Development, School
of Chemistry and Molecular Engineering, East China Normal University, 3663 North Zhongshan Road, Shanghai 200062, China
| | - Wenhao Hu
- Shanghai Engineering Research
Center of Molecular Therapeutics and New Drug Development, School
of Chemistry and Molecular Engineering, East China Normal University, 3663 North Zhongshan Road, Shanghai 200062, China
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20
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Sangwan R, Mandal PK. Recent advances in photoinduced glycosylation: oligosaccharides, glycoconjugates and their synthetic applications. RSC Adv 2017. [DOI: 10.1039/c7ra01858d] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
Carbohydrates have been demonstrated to perform imperative act in biological processes. This review highlights recent uses of photoinduced glycosylation in carbohydrate chemistry for the synthesis of oligosaccharides, thiosugars, glycoconjugates and glycoprotein.
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Affiliation(s)
- Rekha Sangwan
- Medicinal and Process Chemistry Division
- CSIR-Central Drug Research Institute
- Lucknow
- India
- Academy of Scientific and Innovative Research
| | - Pintu Kumar Mandal
- Medicinal and Process Chemistry Division
- CSIR-Central Drug Research Institute
- Lucknow
- India
- Academy of Scientific and Innovative Research
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21
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Deng S, Kain L, Pereira CS, Mata S, Macedo MF, Bendelac A, Teyton L, Savage PB. Psychosine variants as antigens for natural killer T cells. Chem Sci 2016; 8:2204-2208. [PMID: 28507675 PMCID: PMC5408565 DOI: 10.1039/c6sc04218j] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2016] [Accepted: 12/07/2016] [Indexed: 12/22/2022] Open
Abstract
Natural killer T (NKT) cells play a central role in the interface between innate and adaptive immunity, and alpha-galactosylceramide was recently shown to be an endogenous antigen for these cells. The source of alpha-galactosylceramide has not yet been determined; however, in vivo degradation of alpha-galactosylceramide involves generation of alpha-psychosine (alpha-galactosylsphingosine). Alpha-psychosine stimulates cytokine release from NKT cells and constitutes an endogenous antigen for these cells. Alpha-psychosine contains a single lipid chain, while most antigens for NKT cells have two lipid chains, and we have investigated if other glycolipids with one lipid chain, derived from know antigens for NKT cells, stimulate cytokine release from NKT cells. Only psychosine variants derived from the most potent NKT cell antigens cause stimulation, and this stimulation occurs in vitro as well as in vivo. Truncated forms of weak antigens for NKT cells are not stimulatory.
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Affiliation(s)
- S Deng
- Department of Chemistry and Biochemistry , Brigham Young University , Provo , UT84602 , USA .
| | - L Kain
- Department of Immunology , The Scripps Research Institute , La Jolla , CA 92037 , USA
| | - C S Pereira
- Instituto de Investigação e Inovação em Saúde , Universidade do Porto , Portugal.,IBMC - Instituto de Biologia Molecular e Celular , Universidade do Porto , Porto , Portugal
| | - S Mata
- Department of Chemistry and Biochemistry , Brigham Young University , Provo , UT84602 , USA .
| | - M F Macedo
- Instituto de Investigação e Inovação em Saúde , Universidade do Porto , Portugal.,IBMC - Instituto de Biologia Molecular e Celular , Universidade do Porto , Porto , Portugal.,Department of Medical Sciences , University of Aveiro , Aveiro , Portugal
| | - A Bendelac
- Committee on Immunology and Department of Pathology , Howard Hughes Medical Institute , University of Chicago , Chicago , IL 60637 , USA
| | - L Teyton
- Department of Immunology , The Scripps Research Institute , La Jolla , CA 92037 , USA
| | - P B Savage
- Department of Chemistry and Biochemistry , Brigham Young University , Provo , UT84602 , USA .
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22
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Pistorio SG, Nigudkar SS, Stine KJ, Demchenko AV. HPLC-Assisted Automated Oligosaccharide Synthesis: Implementation of the Autosampler as a Mode of the Reagent Delivery. J Org Chem 2016; 81:8796-8805. [PMID: 27575052 PMCID: PMC5496006 DOI: 10.1021/acs.joc.6b01439] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The development of a useful methodology for simple, scalable, and transformative automation of oligosaccharide synthesis that easily interfaces with existing methods is reported. The automated synthesis can now be performed using accessible equipment where the reactants and reagents are delivered by the pump or the autosampler and the reactions can be monitored by the UV detector. The HPLC-based platform for automation is easy to setup and adapt to different systems and targets.
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Affiliation(s)
- Salvatore G. Pistorio
- Department of Chemistry and Biochemistry, University of Missouri—St. Louis, One University Boulevard, St. Louis, Missouri 63121, United States
| | - Swati S. Nigudkar
- Department of Chemistry and Biochemistry, University of Missouri—St. Louis, One University Boulevard, St. Louis, Missouri 63121, United States
| | - Keith J. Stine
- Department of Chemistry and Biochemistry, University of Missouri—St. Louis, One University Boulevard, St. Louis, Missouri 63121, United States
| | - Alexei V. Demchenko
- Department of Chemistry and Biochemistry, University of Missouri—St. Louis, One University Boulevard, St. Louis, Missouri 63121, United States
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23
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Tang SL, Pohl NLB. Automated fluorous-assisted solution-phase synthesis of β-1,2-, 1,3-, and 1,6-mannan oligomers. Carbohydr Res 2016; 430:8-15. [PMID: 27155895 PMCID: PMC4893899 DOI: 10.1016/j.carres.2016.03.025] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2016] [Revised: 03/29/2016] [Accepted: 03/30/2016] [Indexed: 12/30/2022]
Abstract
Automated solution-phase syntheses of β-1,2-, 1,3-, and 1,6-mannan oligomers have been accomplished by applying a β-directing C-5 carboxylate strategy. Fluorous-tag-assisted purification after each reaction cycle allowed the synthesis of short β-mannan oligomers with limited loading of glycosyl donor-as low as 3.0 equivalents for each glycosylation cycle. This study showed the capability of the automated solution-phase synthesis protocol for synthesizing various challenging glycosides, including use of a C-5 ester as a protecting group that could be converted under reductive conditions to a hydroxymethyl group for chain extension.
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Affiliation(s)
- Shu-Lun Tang
- Department of Chemistry, Iowa State University, Ames, IA 50011, USA
| | - Nicola L B Pohl
- Department of Chemistry, Iowa State University, Ames, IA 50011, USA; Department of Chemistry, Indiana University, Bloomington, IN 47405, USA.
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24
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On the Reactivity of Gulose and Guluronic Acid Building Blocks in the Context of Alginate Assembly. European J Org Chem 2016. [DOI: 10.1002/ejoc.201600336] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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25
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Spell ML, Deveaux K, Bresnahan CG, Bernard BL, Sheffield W, Kumar R, Ragains JR. A Visible-Light-Promoted O
-Glycosylation with a Thioglycoside Donor. Angew Chem Int Ed Engl 2016; 55:6515-9. [DOI: 10.1002/anie.201601566] [Citation(s) in RCA: 78] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2016] [Indexed: 11/06/2022]
Affiliation(s)
- Mark L. Spell
- Department of Chemistry; Louisiana State University; 232 Choppin Hall Baton Rouge LA 70803 USA
| | - Kristina Deveaux
- Department of Chemistry; Louisiana State University; 232 Choppin Hall Baton Rouge LA 70803 USA
| | - Caitlin G. Bresnahan
- Department of Chemistry; Louisiana State University; 232 Choppin Hall Baton Rouge LA 70803 USA
| | - Bradley L. Bernard
- Department of Chemistry; Louisiana State University; 232 Choppin Hall Baton Rouge LA 70803 USA
| | - William Sheffield
- Department of Chemistry; Louisiana State University; 232 Choppin Hall Baton Rouge LA 70803 USA
| | - Revati Kumar
- Department of Chemistry; Louisiana State University; 232 Choppin Hall Baton Rouge LA 70803 USA
| | - Justin R. Ragains
- Department of Chemistry; Louisiana State University; 232 Choppin Hall Baton Rouge LA 70803 USA
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26
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Spell ML, Deveaux K, Bresnahan CG, Bernard BL, Sheffield W, Kumar R, Ragains JR. A Visible-Light-Promoted O
-Glycosylation with a Thioglycoside Donor. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201601566] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Mark L. Spell
- Department of Chemistry; Louisiana State University; 232 Choppin Hall Baton Rouge LA 70803 USA
| | - Kristina Deveaux
- Department of Chemistry; Louisiana State University; 232 Choppin Hall Baton Rouge LA 70803 USA
| | - Caitlin G. Bresnahan
- Department of Chemistry; Louisiana State University; 232 Choppin Hall Baton Rouge LA 70803 USA
| | - Bradley L. Bernard
- Department of Chemistry; Louisiana State University; 232 Choppin Hall Baton Rouge LA 70803 USA
| | - William Sheffield
- Department of Chemistry; Louisiana State University; 232 Choppin Hall Baton Rouge LA 70803 USA
| | - Revati Kumar
- Department of Chemistry; Louisiana State University; 232 Choppin Hall Baton Rouge LA 70803 USA
| | - Justin R. Ragains
- Department of Chemistry; Louisiana State University; 232 Choppin Hall Baton Rouge LA 70803 USA
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27
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Dharuman S, Crich D. Determination of the Influence of Side-Chain Conformation on Glycosylation Selectivity using Conformationally Restricted Donors. Chemistry 2016; 22:4535-42. [PMID: 26880055 PMCID: PMC4792696 DOI: 10.1002/chem.201505019] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2015] [Indexed: 01/28/2023]
Abstract
The synthesis of a series of conformationally locked mannopyranosyl thioglycosides in which the C6-O6 bond adopts either the gauche,gauche, gauche,trans, or trans,gauche conformation is described, and their influence on glycosylation stereoselectivity investigated. Two 4,6-O-benzylidene-protected mannosyl thioglycosides carrying axial or equatorial methyl groups at the 6-position were also synthesized and the selectivity of their glycosylation reactions studied to enable a distinction to be made between steric and stereoelectronic effects. The presence of an axial methoxy group at C6 in the bicyclic donor results in a decreased preference for formation of the β-mannoside, whereas an axial methyl group has little effect on selectivity. The result is rationalized in terms of through-space stabilization of a transient intermediate oxocarbenium ion by the axial methoxy group resulting in a higher degree of SN 1-like character in the glycosylation reaction. Comparisons are made with literature examples and exceptions are discussed in terms of pervading steric effects layered on top of the basic stereoelectronic effect.
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Affiliation(s)
- Suresh Dharuman
- Department of Chemistry, Wayne State University, Detroit, MI, 48202, USA
| | - David Crich
- Department of Chemistry, Wayne State University, Detroit, MI, 48202, USA.
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28
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An expeditious synthesis of blood-group antigens, ABO histo-blood group type II antigens and xenoantigen oligosaccharides with amino type spacer−arms. Glycoconj J 2015; 33:63-78. [DOI: 10.1007/s10719-015-9635-1] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2015] [Revised: 10/30/2015] [Accepted: 11/02/2015] [Indexed: 10/22/2022]
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29
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Tang SL, Linz LB, Bonning BC, Pohl NLB. Automated Solution-Phase Synthesis of Insect Glycans to Probe the Binding Affinity of Pea Enation Mosaic Virus. J Org Chem 2015; 80:10482-9. [PMID: 26457763 PMCID: PMC4640232 DOI: 10.1021/acs.joc.5b01428] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2015] [Indexed: 11/29/2022]
Abstract
Pea enation mosaic virus (PEMV)--a plant RNA virus transmitted exclusively by aphids--causes disease in multiple food crops. However, the aphid-virus interactions required for disease transmission are poorly understood. For virus transmission, PEMV binds to a heavily glycosylated receptor aminopeptidase N in the pea aphid gut and is transcytosed across the gut epithelium into the aphid body cavity prior to release in saliva as the aphid feeds. To investigate the role of glycans in PEMV-aphid interactions and explore the possibility of viral control through blocking a glycan interaction, we synthesized insect N-glycan terminal trimannosides by automated solution-phase synthesis. The route features a mannose building block with C-5 ester enforcing a β-linkage, which also provides a site for subsequent chain extension. The resulting insect N-glycan terminal trimannosides with fluorous tags were used in a fluorous microarray to analyze binding with fluorescein isothiocyanate-labeled PEMV; however, no specific binding between the insect glycan and PEMV was detected. To confirm these microarray results, we removed the fluorous tag from the trimannosides for isothermal titration calorimetry studies with unlabeled PEMV. The ITC studies confirmed the microarray results and suggested that this particular glycan-PEMV interaction is not involved in virus uptake and transport through the aphid.
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Affiliation(s)
- Shu-Lun Tang
- Department
of Chemistry, Hach Hall, Iowa State University, Ames, Iowa 50011, United States
| | - Lucas B. Linz
- Department
of Entomology, 339 Science
II, Iowa State University, Ames, Iowa 50011, United States
| | - Bryony C. Bonning
- Department
of Entomology, 339 Science
II, Iowa State University, Ames, Iowa 50011, United States
| | - Nicola L. B. Pohl
- Department
of Chemistry, Simon Hall, Indiana University, Bloomington, Indiana 47405, United States
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30
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Shaik AA, Nishat S, Andreana PR. Stereoselective Synthesis of Natural and Non-natural Thomsen-nouveau Antigens and Hydrazide Derivatives. Org Lett 2015; 17:2582-5. [PMID: 25988425 DOI: 10.1021/acs.orglett.5b00512] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
A selective glycosylation strategy enabling access to all stereochemical combinations of tumor associated Thomsen-nouveau (Tn) antigen, D-GalNAc-O-Ser/Thr, has been developed. The key component for selectivity is the phthalimide-protected D- or L-amino acid acceptors which allow access to α- or β-anomers in excellent yields (72-96%) and selectivity (∼100%) when appropriate C-2 substitution is installed. The glycoamino acid intermediates were divergently converted to Tn-based carboxylates or to hydrazides by tandem Pd-C debenzylation followed by treatment with hydrazine hydrate or hydrazine hydrate treatment alone.
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Affiliation(s)
- Ahmad Ali Shaik
- Department of Chemistry and Biochemistry and School of Green Chemistry and Engineering, University of Toledo, 2801 West Bancroft Street, Toledo, Ohio 43606, United States
| | - Sharmeen Nishat
- Department of Chemistry and Biochemistry and School of Green Chemistry and Engineering, University of Toledo, 2801 West Bancroft Street, Toledo, Ohio 43606, United States
| | - Peter R Andreana
- Department of Chemistry and Biochemistry and School of Green Chemistry and Engineering, University of Toledo, 2801 West Bancroft Street, Toledo, Ohio 43606, United States
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31
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Zhang Q, van Rijssel ER, Walvoort MTC, Overkleeft HS, van der Marel GA, Codée JDC. Acceptor Reactivity in the Total Synthesis of Alginate Fragments Containing α-L-Guluronic Acid and β-D-Mannuronic Acid. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201502581] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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32
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Abstract
![]()
The
first automated solution-phase synthesis of β-1,4-mannuronate
and β-1,4-mannan oligomers has been accomplished by using a
β-directing C-5 carboxylate strategy. By utilizing fluorous-tag
assisting purification after repeated reaction cycles, β-1,4-mannuronate
was synthesized up to a hexasaccharide with limited loading of a glycosyl
donor (up to 3.5 equiv) for each glycosylation cycle due to the homogeneous
solution-phase reaction condition. After a global reduction of the
uronates, the β-1,4-mannan hexasaccharide was obtained, thereby
demonstrating a new approach to β-mannan synthesis.
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Affiliation(s)
- Shu-Lun Tang
- †Department of Chemistry, Iowa State University, Ames, Iowa 50011, United States
| | - Nicola L B Pohl
- †Department of Chemistry, Iowa State University, Ames, Iowa 50011, United States.,‡Department of Chemistry, Indiana University, Bloomington, Indiana 47405, United States
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33
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Zhang Q, van Rijssel ER, Walvoort MTC, Overkleeft HS, van der Marel GA, Codée JDC. Acceptor Reactivity in the Total Synthesis of Alginate Fragments Containing α-L-Guluronic Acid and β-D-Mannuronic Acid. Angew Chem Int Ed Engl 2015; 54:7670-3. [DOI: 10.1002/anie.201502581] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2015] [Indexed: 11/06/2022]
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34
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Fosso M, AlFindee MN, Zhang Q, Nziko VDPN, Kawasaki Y, Shrestha SK, Bearss J, Gregory R, Takemoto JY, Chang CWT. Structure-activity relationships for antibacterial to antifungal conversion of kanamycin to amphiphilic analogues. J Org Chem 2015; 80:4398-411. [PMID: 25826012 DOI: 10.1021/acs.joc.5b00248] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Novel fungicides are urgently needed. It was recently reported that the attachment of an octyl group at the O-4″ position of kanamycin B converts this antibacterial aminoglycoside into a novel antifungal agent. To elucidate the structure-activity relationship (SAR) for this phenomenon, a lead compound FG03 with a hydroxyl group replacing the 3″-NH2 group of kanamycin B was synthesized. FG03's antifungal activity and synthetic scheme inspired the synthesis of a library of kanamycin B analogues alkylated at various hydroxyl groups. SAR studies of the library revealed that for antifungal activity the O-4″ position is the optimal site for attaching a linear alkyl chain and that the 3″-NH2 and 6″-OH groups of the kanamycin B parent molecule are not essential for antifungal activity. The discovery of lead compound, FG03, is an example of reviving clinically obsolete drugs like kanamycin by simple chemical modification and an alternative strategy for discovering novel antimicrobials.
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Affiliation(s)
- Marina Fosso
- †Department of Chemistry and Biochemistry, Utah State University, 0300 Old Main Hill, Logan, Utah 84322-0300, United States
| | - Madher N AlFindee
- †Department of Chemistry and Biochemistry, Utah State University, 0300 Old Main Hill, Logan, Utah 84322-0300, United States
| | - Qian Zhang
- †Department of Chemistry and Biochemistry, Utah State University, 0300 Old Main Hill, Logan, Utah 84322-0300, United States
| | - Vincent de Paul Nzuwah Nziko
- †Department of Chemistry and Biochemistry, Utah State University, 0300 Old Main Hill, Logan, Utah 84322-0300, United States
| | - Yukie Kawasaki
- ‡Department of Biology, Utah State University, 5305 Old Main Hill, Logan, Utah 84322-5305, United States
| | - Sanjib K Shrestha
- ‡Department of Biology, Utah State University, 5305 Old Main Hill, Logan, Utah 84322-5305, United States
| | - Jeremiah Bearss
- †Department of Chemistry and Biochemistry, Utah State University, 0300 Old Main Hill, Logan, Utah 84322-0300, United States
| | - Rylee Gregory
- †Department of Chemistry and Biochemistry, Utah State University, 0300 Old Main Hill, Logan, Utah 84322-0300, United States
| | - Jon Y Takemoto
- ‡Department of Biology, Utah State University, 5305 Old Main Hill, Logan, Utah 84322-5305, United States
| | - Cheng-Wei Tom Chang
- †Department of Chemistry and Biochemistry, Utah State University, 0300 Old Main Hill, Logan, Utah 84322-0300, United States
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35
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Peng P, Geng Y, Göttker-Schnetmann I, Schmidt RR. 2-Nitro-thioglycosides: α- and β-selective generation and their potential as β-selective glycosyl donors. Org Lett 2015; 17:1421-4. [PMID: 25740177 DOI: 10.1021/acs.orglett.5b00295] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Michael-type addition of thiolates to 2-nitro-D-glucal or to 2-nitro-D-galactal derivatives readily provides 2-deoxy-2-nitro-1-thioglycosides. Kinetic and thermodynamic reaction control permitted formation of either the α- or preferentially the β-anomers, respectively. Addition of achiral and chiral thiourea derivatives to the reaction mixture increased the reaction rate; the outcome is substrate-controlled. The 2-deoxy-2-nitro-1-thioglycosides are excellent glycosyl donors under arylsulfenyl chloride/silver triflate (ArSCl/AgOTf) activation, and they provide, anchimerically assisted by the nitro group, mostly β-glycosides.
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Affiliation(s)
- Peng Peng
- Department of Chemistry, University of Konstanz, 78457 Konstanz, Germany
| | - Yiqun Geng
- Department of Chemistry, University of Konstanz, 78457 Konstanz, Germany
| | | | - Richard R Schmidt
- Department of Chemistry, University of Konstanz, 78457 Konstanz, Germany
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36
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Hosoya T, Kosma P, Rosenau T. Contact ion pairs and solvent-separated ion pairs from d-mannopyranosyl and d-glucopyranosyl triflates. Carbohydr Res 2015; 401:127-31. [DOI: 10.1016/j.carres.2014.10.013] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2014] [Revised: 10/15/2014] [Accepted: 10/17/2014] [Indexed: 11/27/2022]
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37
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Hosoya T, Takano T, Kosma P, Rosenau T. Theoretical Foundation for the Presence of Oxacarbenium Ions in Chemical Glycoside Synthesis. J Org Chem 2014; 79:7889-94. [DOI: 10.1021/jo501012s] [Citation(s) in RCA: 51] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Affiliation(s)
- Takashi Hosoya
- Department
of Chemistry, University of Natural Resources and Life Sciences, Muthgasse
18, A-1190 Vienna, Austria
| | - Toshiyuki Takano
- Graduate
School of Agriculture, Kyoto University, Kitashirakawaoiwake-cho, Sakyoku, Kyoto-shi, Kyoto 606-8502, Japan
| | - Paul Kosma
- Department
of Chemistry, University of Natural Resources and Life Sciences, Muthgasse
18, A-1190 Vienna, Austria
| | - Thomas Rosenau
- Department
of Chemistry, University of Natural Resources and Life Sciences, Muthgasse
18, A-1190 Vienna, Austria
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38
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Roy R, Rajasekaran P, Mallick A, Vankar YD. Gold(III) Chloride and Phenylacetylene: A Catalyst System for the Ferrier Rearrangement, andO-Glycosylation of 1-O-Acetyl Sugars as Glycosyl Donors. European J Org Chem 2014. [DOI: 10.1002/ejoc.201402606] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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39
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Affiliation(s)
- Hongwen He
- College
of Chemistry and Life Sciences, Zhejiang Normal University, Jinhua 321004, China
| | - Xiangming Zhu
- College
of Chemistry and Life Sciences, Zhejiang Normal University, Jinhua 321004, China
- Centre
for Synthesis and Chemical Biology, UCD School of Chemistry and Chemical
Biology, University College Dublin, Belfield, Dublin 4, Ireland
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40
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Padungros P, Alberch L, Wei A. Glycosyl dithiocarbamates: β-selective couplings without auxiliary groups. J Org Chem 2014; 79:2611-24. [PMID: 24548247 PMCID: PMC3985838 DOI: 10.1021/jo500032k] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2014] [Indexed: 01/04/2023]
Abstract
In this article, we evaluate glycosyl dithiocarbamates (DTCs) with unprotected C2 hydroxyls as donors in β-linked oligosaccharide synthesis. We report a mild, one-pot conversion of glycals into β-glycosyl DTCs via DMDO oxidation with subsequent ring opening by DTC salts, which can be generated in situ from secondary amines and CS2. Glycosyl DTCs are readily activated with Cu(I) or Cu(II) triflate at low temperatures and are amenable to reiterative synthesis strategies, as demonstrated by the efficient construction of a tri-β-1,6-linked tetrasaccharide. Glycosyl DTC couplings are highly β-selective despite the absence of a preexisting C2 auxiliary group. We provide evidence that the directing effect is mediated by the C2 hydroxyl itself via the putative formation of a cis-fused bicyclic intermediate.
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Affiliation(s)
| | - Laura Alberch
- Department
of Chemistry, Purdue University, 560 Oval Drive, West Lafayette, Indiana 47907, United
States
| | - Alexander Wei
- Department
of Chemistry, Purdue University, 560 Oval Drive, West Lafayette, Indiana 47907, United
States
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41
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Chen W, Matsushita T, Shcherbakov D, Boukari H, Vasella A, Böttger EC, Crich D. Synthesis, antiribosomal and antibacterial activity of 4′-O-glycopyranosyl paromomycin aminoglycoside antibiotics. MEDCHEMCOMM 2014. [DOI: 10.1039/c4md00119b] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
4′-O-Glycopyranosylation of the aminoglycoside paromomycin affects differentially the inhibition of prokaryotic and eukaryotic ribosomes and influences antibacterial activity against MRSA.
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Affiliation(s)
- Weiwei Chen
- Department of Chemistry
- Wayne State University
- Detroit
- USA
| | | | - Dimitri Shcherbakov
- Institut für Medizinische Mikrobiologie
- Universität Zürich
- 8006 Zürich
- Switzerland
| | - Heithem Boukari
- Institut für Medizinische Mikrobiologie
- Universität Zürich
- 8006 Zürich
- Switzerland
| | - Andrea Vasella
- Laboratorium für Organische Chemie
- ETH Zürich
- 8093 Zürich
- Switzerland
| | - Erik C. Böttger
- Institut für Medizinische Mikrobiologie
- Universität Zürich
- 8006 Zürich
- Switzerland
| | - David Crich
- Department of Chemistry
- Wayne State University
- Detroit
- USA
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42
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Zhang Y, Wang P, Song N, Li M. Bromodimethylsulfonium bromide/silver triflate-promoted glycosylations using glycosyl allenoates as donors. Carbohydr Res 2013; 381:101-11. [DOI: 10.1016/j.carres.2013.08.005] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2013] [Revised: 08/08/2013] [Accepted: 08/09/2013] [Indexed: 11/25/2022]
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43
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Synthesis and antiviral evaluation of 6'-acylamido-6'-deoxy-α-D-mannoglycerolipids. Carbohydr Res 2013; 381:74-82. [PMID: 24076433 DOI: 10.1016/j.carres.2013.08.010] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2013] [Revised: 07/12/2013] [Accepted: 08/14/2013] [Indexed: 11/21/2022]
Abstract
Eight new aminomannoglycerolipids (2a-h) with linear, branched, or aromatic acyl chains were synthesized and evaluated for their anti-influenza A virus (IAV) activity. By comparing six mannosyl donors with different protecting and leaving groups, the critical glycosylation reaction employed mannosyl trichloroacetimidate with 2-O-benzoyl protecting group as the donor to give the glycoside with absolute α-anomeric selectivity. The bioactivity results showed that the branched compound 2g could effectively inhibit IAV multiplication in MDCK cells with IC50 69.9μM.
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44
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Manabe S, Ito Y. Hafnium(IV) tetratriflate as a glycosyl fluoride activation reagent. J Org Chem 2013; 78:4568-72. [PMID: 23565903 DOI: 10.1021/jo400282x] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
Hafnium(IV) tetratriflate was found to be a good activator of glycosyl fluoride. The protocol was operationally simple and was widely applicable to a variety of substrates in both solid-phase and solution-phase glycosylation reactions.
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Affiliation(s)
- Shino Manabe
- RIKEN, Synthetic Cellular Chemistry Laboratory, Hirosawa Wako, Saitama 351-0198, Japan.
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45
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Ngoje G, Li Z. Study of the stereoselectivity of 2-azido-2-deoxyglucosyl donors: protecting group effects. Org Biomol Chem 2013; 11:1879-86. [PMID: 23380832 DOI: 10.1039/c3ob26994a] [Citation(s) in RCA: 46] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A series of tolyl 2-azido-2-deoxy-thio-glucoside donors with different combinations of protecting groups were prepared. These donors were used in glycosylation reactions to test the correlations between the stereoselectivity and the pattern of the protecting groups. Acetyl groups showed a position dependent stereo-directing effect. A remote participating mechanism is proposed to explain the observed results.
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Affiliation(s)
- George Ngoje
- Binghamton University, Department of Chemistry, Binghamton, NY 13902, USA
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46
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Walvoort MTC, van der Marel GA, Overkleeft HS, Codée JDC. On the reactivity and selectivity of donor glycosides in glycochemistry and glycobiology: trapped covalent intermediates. Chem Sci 2013. [DOI: 10.1039/c2sc21610h] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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47
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Whitfield DM. Plausible transition states for glycosylation reactions. Carbohydr Res 2012; 356:180-90. [DOI: 10.1016/j.carres.2012.03.040] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2012] [Revised: 03/27/2012] [Accepted: 03/30/2012] [Indexed: 11/29/2022]
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48
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Premathilake HD, Demchenko AV. 2-Allylphenyl glycosides as complementary building blocks for oligosaccharide and glycoconjugate synthesis. Beilstein J Org Chem 2012; 8:597-605. [PMID: 22563357 PMCID: PMC3343285 DOI: 10.3762/bjoc.8.66] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2012] [Accepted: 03/23/2012] [Indexed: 01/23/2023] Open
Abstract
The O-allylphenyl (AP) anomeric moiety was investigated as a new leaving group that can be activated for chemical glycosylation under a variety of conditions, through both direct and remote pathways. Differentiation between the two activation pathways was achieved in a mechanistic study. The orthogonal-type activation of the AP moiety along with common thioglycosides allows for the execution of efficient oligosaccharide assembly.
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Affiliation(s)
- Hemali D Premathilake
- Department of Chemistry and Biochemistry, University of Missouri - St. Louis, One University Boulevard, St. Louis, MO 63121, USA
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49
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Furukawa T, Hinou H, Nishimura SI. Strict Stereocontrol by 2,4-O-Di-tert-butylsilylene Group on β-Glucuronylations. Org Lett 2012; 14:2102-5. [DOI: 10.1021/ol300634x] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Takayuki Furukawa
- Graduate School of Life Science and Frontier Research Center for Post-Genome Science and Technology, Hokkaido University, N21, W11, Kita-ku, Sapporo 001-0021, Japan
| | - Hiroshi Hinou
- Graduate School of Life Science and Frontier Research Center for Post-Genome Science and Technology, Hokkaido University, N21, W11, Kita-ku, Sapporo 001-0021, Japan
| | - Shin-Ichiro Nishimura
- Graduate School of Life Science and Frontier Research Center for Post-Genome Science and Technology, Hokkaido University, N21, W11, Kita-ku, Sapporo 001-0021, Japan
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50
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Cumpstey I. On a so-called “kinetic anomeric effect” in chemical glycosylation. Org Biomol Chem 2012; 10:2503-8. [DOI: 10.1039/c2ob06696c] [Citation(s) in RCA: 59] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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