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Ponnapalli KK, Ho YC, Tseng MC, Sekhar Vasamsetti BV, Shie JJ. One-Pot Glycosylation Strategy Assisted by Ion Mobility-Mass Spectrometry Analysis toward the Synthesis of N-Linked Oligosaccharides. J Org Chem 2022; 87:5339-5357. [PMID: 35377640 DOI: 10.1021/acs.joc.2c00184] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
N-Glycans are major constituents of several cellular glycoproteins. One-pot strategies for the synthesis of N-glycans are crucial for the rapid generation of pure samples to determine their biological functions. Herein, we describe a double one-pot strategy for the synthesis of N-glycans assisted by an IM-MS analysis approach for rapid screening of optimized glycosylation reaction conditions. This research includes triflate-mediated direct β-mannosylation and tandem glycosylation in a one-pot strategy for the synthesis of the challenging N-linked trisaccharide core β-5. Furthermore, a one-pot sequential glycosylation of the N-linked trisaccharide core 7 furnishes diverse high-mannose type N-glycans with excellent stereo- and regioselectivities. In particular, ion mobility-mass spectrometry-based quantitative analysis is applied to identify the stereo- and regioselective outcomes of the crude reaction mixtures to develop a highly efficient one-pot protocol.
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Affiliation(s)
| | - Yi-Chi Ho
- Institute of Chemistry, Academia Sinica, Taipei 11529, Taiwan
| | - Mei-Chun Tseng
- Institute of Chemistry, Academia Sinica, Taipei 11529, Taiwan
| | | | - Jiun-Jie Shie
- Institute of Chemistry, Academia Sinica, Taipei 11529, Taiwan
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2
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Hénault J, Quellier P, Mock-Joubert M, Le Narvor C, Alix A, Bonnaffé D. Regioselective Reductive Opening of Benzylidene Acetals with Dichlorophenylborane/Triethylsilane: Previously Unreported Side Reactions and How to Prevent Them. J Org Chem 2022; 87:963-973. [PMID: 35015527 DOI: 10.1021/acs.joc.1c02141] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Arylidene acetals are widely used protecting groups, because of not only the high regioselectivity of their introduction but also the possibility of performing further regioselective reductive opening in the presence of a hydride donor and an acid catalyst. In this context, the Et3SiH/PhBCl2 system presents several advantages: silanes are efficient, environmentally benign, and user-friendly hydride donors, while PhBCl2 opens the way to unique regioselectivity with regard to all other Brønsted or Lewis acids used with silanes. This system has been extensively used by several groups, and we have demonstrated its high regioselectivity in the reductive opening of 4,6- and 2,4-O-p-methoxybenzylidene moieties in protected disaccharides. Surprisingly, its use on 4,6-O-benzylidene-containing substrates 1 and 2 led to unreproducible yields due to the unexpected formation of several side products. Their characterizations allowed us to identify different pitfalls potentially affecting the outcome of reductive opening of arylidenes with the Et3SiH/PhBCl2 reagent system: alkene hydroboration, azide reduction, and/or Lewis acid-promoted cleavage of the arylidene. With this knowledge, we optimized reproducible and high-yielding reaction conditions that secure and extend the scope of the Et3SiH/PhBCl2 system as a reagent for the regioselective opening of arylidenes in complex and multifunctional molecules.
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Affiliation(s)
- Jérôme Hénault
- Université Paris-Saclay, CNRS, Institut de chimie moléculaire et des matériaux d'Orsay, 91405 Orsay, France
| | - Pauline Quellier
- Université Paris-Saclay, CNRS, Institut de chimie moléculaire et des matériaux d'Orsay, 91405 Orsay, France
| | - Maxime Mock-Joubert
- Université Paris-Saclay, CNRS, Institut de chimie moléculaire et des matériaux d'Orsay, 91405 Orsay, France
| | - Christine Le Narvor
- Université Paris-Saclay, CNRS, Institut de chimie moléculaire et des matériaux d'Orsay, 91405 Orsay, France
| | - Aurélien Alix
- Université Paris-Saclay, CNRS, Institut de chimie moléculaire et des matériaux d'Orsay, 91405 Orsay, France
| | - David Bonnaffé
- Université Paris-Saclay, CNRS, Institut de chimie moléculaire et des matériaux d'Orsay, 91405 Orsay, France
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3
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Studzian M, Pérez ME, Arias-Pérez MS. Experimental observations on the reductive cleavage of endo and exo 3,4-O-benzylidene fucopyranoside derivatives. Carbohydr Res 2021; 505:108338. [PMID: 34023694 DOI: 10.1016/j.carres.2021.108338] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2021] [Revised: 04/19/2021] [Accepted: 05/04/2021] [Indexed: 10/21/2022]
Abstract
Reductive cleavage of methyl 3,4-O-benzylidene-α-L-fucopyranosides with BH3·THF-TfOH and NaCNBH3-TfOH systems resulted in enhanced reaction rates and selectivity compared to BH3·THF-Bu2BOTf. With this latter system, the nature of the O-2 substituent exerted a clear control on the reactivity but practically did not affect the regioselectivity. With TfOH the direction of cleavage was determined, as expected, by the configuration of the acetal carbon atom, but slightly influenced by its competitive epimerization. Protic conditions provided higher regioselectivity in the openings of the exo isomers, affording a useful approach to the practical synthesis of 3-O-benzyl ethers.
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Affiliation(s)
- Maciej Studzian
- Departamento de Química Orgánica y Química Inorgánica, Universidad de Alcalá, 28805, Alcalá de Henares, Madrid, Spain
| | - María-Elena Pérez
- Departamento de Química Orgánica y Química Inorgánica, Universidad de Alcalá, 28805, Alcalá de Henares, Madrid, Spain
| | - María-Selma Arias-Pérez
- Departamento de Química Orgánica y Química Inorgánica, Universidad de Alcalá, 28805, Alcalá de Henares, Madrid, Spain.
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4
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Peng W, Li M, Zhou X, Long Q, Li D, Gao J, Sun Q, Sun S, Su Y, Wang P. Convergent Synthesis of Branched β-Glucan Tridecasaccharides Ready for Conjugation. SYNTHESIS-STUTTGART 2021. [DOI: 10.1055/a-1440-9386] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
AbstractStructurally defined and pure oligosaccharides corresponding to β-glucans have attracted great attention because of their potential properties as immunostimulating agents and as antigens of vaccine candidates. We herein describe a convergent synthesis of ready-to-conjugate tridecasaccharides composed of a β-1,3-glucan nonasaccharide backbone and a β-1,6-glucan tetrasaccharide branch. The assembly was achieved by employing trichloroacetimidate glycosylations and features the gram-scale preparation of the nonasaccharide backbone and installation of the tetrasaccharide branch involving orthoester rearrangement to the glycoside.
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Affiliation(s)
- Wenjie Peng
- Laboratory of Systems Biomedicine, Chinese Ministry of Education, Shanghai Center for Systems Biomedicine, Shanghai Jiao Tong University
| | - Ming Li
- Key Laboratory of Marine Medicine, Chinese Ministry of Education, School of Medicine and Pharmacy, Ocean University of China
- Laboratory for Marine Drugs and Bioproducts, Pilot National Laboratory for Marine Science and Technology
| | - Xin Zhou
- Key Laboratory of Marine Medicine, Chinese Ministry of Education, School of Medicine and Pharmacy, Ocean University of China
| | - Qing Long
- Key Laboratory of Marine Medicine, Chinese Ministry of Education, School of Medicine and Pharmacy, Ocean University of China
| | - Dongwei Li
- Key Laboratory of Marine Medicine, Chinese Ministry of Education, School of Medicine and Pharmacy, Ocean University of China
| | - Jingru Gao
- Key Laboratory of Marine Medicine, Chinese Ministry of Education, School of Medicine and Pharmacy, Ocean University of China
| | - Qikai Sun
- Key Laboratory of Marine Medicine, Chinese Ministry of Education, School of Medicine and Pharmacy, Ocean University of China
| | - Shaozi Sun
- Key Laboratory of Marine Medicine, Chinese Ministry of Education, School of Medicine and Pharmacy, Ocean University of China
| | - Yong Su
- Key Laboratory of Marine Medicine, Chinese Ministry of Education, School of Medicine and Pharmacy, Ocean University of China
| | - Peng Wang
- Key Laboratory of Marine Medicine, Chinese Ministry of Education, School of Medicine and Pharmacy, Ocean University of China
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Zhang Z, Wang Y, Wang W, Yamamoto Y, Bao M, Yu X. Convenient synthesis of tetracoordinated organoboron compounds via C H borylation of aryl-N-heteroaromatics with TfOB Bu2. Tetrahedron Lett 2020. [DOI: 10.1016/j.tetlet.2020.152199] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
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6
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Matsuoka T, Inuki S, Miyagawa T, Oishi S, Ohno H. Total Synthesis of (+)-Polyoxamic Acid via Visible-Light-Mediated Photocatalytic β-Scission and 1,5-Hydrogen Atom Transfer of Glucose Derivative. J Org Chem 2020; 85:8271-8278. [PMID: 32425047 DOI: 10.1021/acs.joc.0c00910] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
A total synthesis of polyoxamic acid has been achieved. The key feature of the synthetic route is a visible-light-mediated β-scission and carbon-to-carbon 1,5-hydrogen atom transfer (1,5-HAT) to provide the functionalized alditol under mild conditions. This type of carbon-to-carbon 1,5-HAT initiated by C(sp3)-centered radicals has been scarcely reported. Furthermore, the reaction was adapted for flow chemistry, facilitating the total synthesis of polyoxamic acid.
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Affiliation(s)
- Takuro Matsuoka
- Graduate School of Pharmaceutical Sciences, Kyoto University, Sakyo-ku, Kyoto 606-8501, Japan
| | - Shinsuke Inuki
- Graduate School of Pharmaceutical Sciences, Kyoto University, Sakyo-ku, Kyoto 606-8501, Japan
| | - Takashi Miyagawa
- Graduate School of Pharmaceutical Sciences, Kyoto University, Sakyo-ku, Kyoto 606-8501, Japan
| | - Shinya Oishi
- Graduate School of Pharmaceutical Sciences, Kyoto University, Sakyo-ku, Kyoto 606-8501, Japan
| | - Hiroaki Ohno
- Graduate School of Pharmaceutical Sciences, Kyoto University, Sakyo-ku, Kyoto 606-8501, Japan
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Abstract
Tunable aryl imidazolium ionic liquids acting as Brønsted acid ionic liquids were found to be efficient catalysts for per-O-acetylation and reductive ring opening of benzylidene acetals. This method requires a truly catalytic amount of the least expensive available ionic liquids that are water-stable and reusable and also stable at room temperature. The reactions were obtained in one hour with good to excellent yields. These reactions can form C−O and C−H bonds with a high atom economy. Furthermore, the ionic liquid is an anomeric selective catalyst in per-O-acetylation and reductive ring opening of benzylidene acetals of sugar moieties.
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Thota N, Björkling F, Kankala S. Triphenylcarbenium Tetrafluoroborate as an Efficient Catalyst in the Regioselective Reductive Ring Opening of Benzylidene Acetals of Carbohydrates. ChemistrySelect 2019. [DOI: 10.1002/slct.201901795] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Affiliation(s)
- Niranjan Thota
- Department of Drug Design and PharmacologyFaculty of Health and Medical SciencesUniversity of Copenhagen Universitetsparken 2 DK-2100 Denmark
| | - Fredrik Björkling
- Department of Drug Design and PharmacologyFaculty of Health and Medical SciencesUniversity of Copenhagen Universitetsparken 2 DK-2100 Denmark
| | - Shravankumar Kankala
- Department of ChemistryKakatiya University Warangal- 506009, Telangana State India
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Wang T, Demchenko AV. Synthesis of carbohydrate building blocks via regioselective uniform protection/deprotection strategies. Org Biomol Chem 2019; 17:4934-4950. [PMID: 31044205 DOI: 10.1039/c9ob00573k] [Citation(s) in RCA: 37] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Discussed herein is the synthesis of partially protected carbohydrates by manipulating only one type of a protecting group for a given substrate. The first focus of this review is the uniform protection of an unprotected starting material in a way that only one (or two) hydroxyl group remains unprotected. The second focus involves regioselective partial deprotection of uniformly protected compounds in a way that only one (or two) hydroxyl group becomes liberated.
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Affiliation(s)
- Tinghua Wang
- Department of Chemistry and Biochemistry, University of Missouri - St Louis, One University Boulevard, St Louis, Missouri 63121, USA.
| | - Alexei V Demchenko
- Department of Chemistry and Biochemistry, University of Missouri - St Louis, One University Boulevard, St Louis, Missouri 63121, USA.
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10
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Janssens J, Risseeuw MDP, Van der Eycken J, Van Calenbergh S. Regioselective Ring Opening of 1,3-Dioxane-Type Acetals in Carbohydrates. European J Org Chem 2018. [DOI: 10.1002/ejoc.201801245] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Jonas Janssens
- Laboratory for Medicinal Chemistry; Department of Pharmaceutics (FFW); Ghent University; Ottergemsesteenweg 460 9000 Ghent Belgium
- Laboratory for Organic and Bioorganic Synthesis; Department of Organic and Macromolecular Chemistry; Ghent University; Krijgslaan 281 (S4) 9000 Ghent Belgium
| | - Martijn D. P. Risseeuw
- Laboratory for Medicinal Chemistry; Department of Pharmaceutics (FFW); Ghent University; Ottergemsesteenweg 460 9000 Ghent Belgium
| | - Johan Van der Eycken
- Laboratory for Organic and Bioorganic Synthesis; Department of Organic and Macromolecular Chemistry; Ghent University; Krijgslaan 281 (S4) 9000 Ghent Belgium
| | - Serge Van Calenbergh
- Laboratory for Medicinal Chemistry; Department of Pharmaceutics (FFW); Ghent University; Ottergemsesteenweg 460 9000 Ghent Belgium
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11
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Kulkarni SS, Wang CC, Sabbavarapu NM, Podilapu AR, Liao PH, Hung SC. "One-Pot" Protection, Glycosylation, and Protection-Glycosylation Strategies of Carbohydrates. Chem Rev 2018; 118:8025-8104. [PMID: 29870239 DOI: 10.1021/acs.chemrev.8b00036] [Citation(s) in RCA: 202] [Impact Index Per Article: 33.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Carbohydrates, which are ubiquitously distributed throughout the three domains of life, play significant roles in a variety of vital biological processes. Access to unique and homogeneous carbohydrate materials is important to understand their physical properties, biological functions, and disease-related features. It is difficult to isolate carbohydrates in acceptable purity and amounts from natural sources. Therefore, complex saccharides with well-defined structures are often most conviently accessed through chemical syntheses. Two major hurdles, regioselective protection and stereoselective glycosylation, are faced by carbohydrate chemists in synthesizing these highly complicated molecules. Over the past few years, there has been a radical change in tackling these problems and speeding up the synthesis of oligosaccharides. This is largely due to the development of one-pot protection, one-pot glycosylation, and one-pot protection-glycosylation protocols and streamlined approaches to orthogonally protected building blocks, including those from rare sugars, that can be used in glycan coupling. In addition, new automated strategies for oligosaccharide syntheses have been reported not only for program-controlled assembly on solid support but also by the stepwise glycosylation in solution phase. As a result, various sugar molecules with highly complex, large structures could be successfully synthesized. To summarize these recent advances, this review describes the methodologies for one-pot protection and their one-pot glycosylation into the complex glycans and the chronological developments associated with automated syntheses of oligosaccharides.
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Affiliation(s)
- Suvarn S Kulkarni
- Department of Chemistry , Indian Institute of Technology Bombay , Mumbai 400076 , India
| | | | | | - Ananda Rao Podilapu
- Department of Chemistry , Indian Institute of Technology Bombay , Mumbai 400076 , India
| | - Pin-Hsuan Liao
- Institute of Chemistry , Academia Sinica , Taipei 115 , Taiwan
| | - Shang-Cheng Hung
- Genomics Research Center , Academia Sinica , Taipei 115 , Taiwan
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12
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Zakharova AN, Awan SI, Nami F, Gotfredsen CH, Madsen R, Clausen MH. Synthesis of Two Tetrasaccharide Pentenyl Glycosides Related to the Pectic Rhamnogalacturonan I Polysaccharide. Molecules 2018; 23:molecules23020327. [PMID: 29401687 PMCID: PMC6017268 DOI: 10.3390/molecules23020327] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2018] [Revised: 01/29/2018] [Accepted: 02/01/2018] [Indexed: 11/29/2022] Open
Abstract
The synthesis of two protected tetrasaccharide pentenyl glycosides with diarabinan and digalactan branching related to the pectic polysaccharide rhamnogalacturonan I is reported. The strategy relies on the coupling of N-phenyl trifluoroacetimidate disaccharide donors to a common rhamnosyl acceptor. The resulting trisaccharide thioglycosides were finally coupled to an n-pentenyl galactoside acceptor to access the two protected branched tetrasaccharides.
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Affiliation(s)
- Alexandra N Zakharova
- Center for Nanomedicine and Theranostics, Technical University of Denmark, Kemitorvet 207, DK-2800 Kgs. Lyngby, Denmark.
- Department of Chemistry, Technical University of Denmark, Kemitorvet 207, DK-2800 Kgs. Lyngby, Denmark.
| | - Shahid I Awan
- Center for Nanomedicine and Theranostics, Technical University of Denmark, Kemitorvet 207, DK-2800 Kgs. Lyngby, Denmark.
- Department of Chemistry, Technical University of Denmark, Kemitorvet 207, DK-2800 Kgs. Lyngby, Denmark.
| | - Faranak Nami
- Center for Nanomedicine and Theranostics, Technical University of Denmark, Kemitorvet 207, DK-2800 Kgs. Lyngby, Denmark.
- Department of Chemistry, Technical University of Denmark, Kemitorvet 207, DK-2800 Kgs. Lyngby, Denmark.
| | - Charlotte H Gotfredsen
- Department of Chemistry, Technical University of Denmark, Kemitorvet 207, DK-2800 Kgs. Lyngby, Denmark.
| | - Robert Madsen
- Department of Chemistry, Technical University of Denmark, Kemitorvet 207, DK-2800 Kgs. Lyngby, Denmark.
| | - Mads H Clausen
- Center for Nanomedicine and Theranostics, Technical University of Denmark, Kemitorvet 207, DK-2800 Kgs. Lyngby, Denmark.
- Department of Chemistry, Technical University of Denmark, Kemitorvet 207, DK-2800 Kgs. Lyngby, Denmark.
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13
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Mandhapati AR, Yang G, Kato T, Shcherbakov D, Hobbie SN, Vasella A, Böttger EC, Crich D. Structure-Based Design and Synthesis of Apramycin-Paromomycin Analogues: Importance of the Configuration at the 6'-Position and Differences between the 6'-Amino and Hydroxy Series. J Am Chem Soc 2017; 139:14611-14619. [PMID: 28892368 PMCID: PMC5647259 DOI: 10.1021/jacs.7b07754] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
The preparation of a series of four analogues of the aminoglycoside antibiotics neomycin and paromomycin is described in which ring I, involved in critical binding interactions with the ribosomal target, is replaced by an apramycin-like dioxabicyclo[4.4.0]octane system. The effect of this modification is to lock the hydroxymethyl side chain of the neomycin or paromomycin ring I, as part of the dioxabicyclooctane ring, into either the gauche-gauche or the gauche-trans conformation (respectively, axial or equatorial to the bicyclic system). The antiribosomal activity of these compounds is investigated with cell-free translation assays using both bacterial ribosomes and recombinant hybrid ribosomes carrying eukaryotic decoding A site cassettes. Compounds substituted with an equatorial hydroxyl or amino group in the newly formed ring are considerably more active than their axial diastereomers, lending strong support to crystallographically derived models of aminoglycoside-ribosome interactions. One such bicyclic compound carrying an equatorial hydroxyl group has activity equal to that of the parent yet displays better ribosomal selectivity, predictive of an enhanced therapeutic index. A paromomycin analog lacking the hydroxymethyl ring I side chain is considerably less active than the parent. Antibacterial activity against model Gram negative and Gram positive bacteria is reported for selected compounds, as is activity against ESKAPE pathogens and recombinant bacteria carrying specific resistance determinants. Analogues with a bicyclic ring I carrying equatorial amino or hydroxyl groups mimicking the bound side chains of neomycin and paromomycin, respectively, show excellent activity and, by virtue of their novel structure, retain this activity in strains that are insensitive to the parent compounds.
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Affiliation(s)
- Appi Reddy Mandhapati
- Department of Chemistry, Wayne State University , Detroit, Michigan 48202, United States
| | - Guanyu Yang
- Department of Chemistry, Wayne State University , Detroit, Michigan 48202, United States
| | - Takayuki Kato
- Department of Chemistry, Wayne State University , Detroit, Michigan 48202, United States
| | - Dimitri Shcherbakov
- Institute of Medical Microbiology, University of Zurich , 8006 Zurich, Switzerland
| | - Sven N Hobbie
- Institute of Medical Microbiology, University of Zurich , 8006 Zurich, Switzerland
| | - Andrea Vasella
- Organic Chemistry Laboratory, ETH Zurich , 8093 Zurich, Switzerland
| | - Erik C Böttger
- Institute of Medical Microbiology, University of Zurich , 8006 Zurich, Switzerland
| | - David Crich
- Department of Chemistry, Wayne State University , Detroit, Michigan 48202, United States
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14
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Han Z, Chen C, Meng C, Gao T, Peng P, Chen X, Wang F, Cao H. Chemoenzymatic synthesis of tumor-associated antigen N3 minor octasaccharide. J Carbohydr Chem 2017. [DOI: 10.1080/07328303.2017.1315123] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Affiliation(s)
- Zhipeng Han
- National Glycoengineering Research Center, Shandong Provincial Key Laboratory of Carbohydrate Chemistry and Glycobiology, and School of Pharmaceutical Sciences, Shandong University, Jinan, China
| | - Congcong Chen
- National Glycoengineering Research Center, Shandong Provincial Key Laboratory of Carbohydrate Chemistry and Glycobiology, and School of Pharmaceutical Sciences, Shandong University, Jinan, China
| | - Caicai Meng
- National Glycoengineering Research Center, Shandong Provincial Key Laboratory of Carbohydrate Chemistry and Glycobiology, and School of Pharmaceutical Sciences, Shandong University, Jinan, China
| | - Tian Gao
- National Glycoengineering Research Center, Shandong Provincial Key Laboratory of Carbohydrate Chemistry and Glycobiology, and School of Pharmaceutical Sciences, Shandong University, Jinan, China
| | - Peng Peng
- National Glycoengineering Research Center, Shandong Provincial Key Laboratory of Carbohydrate Chemistry and Glycobiology, and School of Pharmaceutical Sciences, Shandong University, Jinan, China
| | - Xi Chen
- Department of Chemistry, University of California, Davis, California, USA
| | - Fengshan Wang
- National Glycoengineering Research Center, Shandong Provincial Key Laboratory of Carbohydrate Chemistry and Glycobiology, and School of Pharmaceutical Sciences, Shandong University, Jinan, China
- Key Laboratory of Chemical Biology of Natural Products (Ministry of Education), Institute of Biochemical and Biotechnological Drugs, Shandong University, Jinan, China
| | - Hongzhi Cao
- National Glycoengineering Research Center, Shandong Provincial Key Laboratory of Carbohydrate Chemistry and Glycobiology, and School of Pharmaceutical Sciences, Shandong University, Jinan, China
- State Key Laboratory of Microbial Technology, Shandong University, Jinan, China
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15
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Harale KR, Rout JK, Chhikara MK, Gill DS, Misra AK. Synthesis and immunochemical evaluation of a novel Neisseria meningitidis serogroup A tetrasaccharide and its conjugate. Org Chem Front 2017. [DOI: 10.1039/c7qo00468k] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A tetrameric repeating unit of capsular polysaccharide of Neisseria meningitidis serogroup A was synthesized which mimicked natural polysaccharide in immunochemical analysis.
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Affiliation(s)
- Kishore R. Harale
- MSD Wellcome Trust Hilleman Laboratories Pvt. Ltd
- New Delhi 110062
- India
| | - Jeetendra K. Rout
- MSD Wellcome Trust Hilleman Laboratories Pvt. Ltd
- New Delhi 110062
- India
| | | | - Davinder S. Gill
- MSD Wellcome Trust Hilleman Laboratories Pvt. Ltd
- New Delhi 110062
- India
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16
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Ní Cheallaigh A, Oscarson S. Synthesis of building blocks for an iterative approach towards oligomers of the Streptococcus pneumoniae type 1 zwitterionic capsular polysaccharide repeating unit. CAN J CHEM 2016. [DOI: 10.1139/cjc-2016-0006] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
Zwitterionic capsular polysaccharide extracts, ∼8 kDa in mass, from Streptococcus pneumoniae type 1 (Spt1) have shown unique T-cell activating properties. Oligomers of the trisaccharide repeating unit of the Spt1 capsular polysaccharide [→3)-4-NH2-α-d-QuipNAc-(1→4)-α-d-GalpA-(1→3)-α-d-GalpA-(1-]n of defined length are needed to further investigate this response. An approach towards iteratively extendable trisaccharide building blocks of the zwitterionic capsular polysaccharides of Spt1 is described. Key elements include the comparison of pre-glycosylation oxidation and post-glycosylation oxidation approaches using thioglycoside donors to the target trisaccharide, the optimisation of the post-glycosylation oxidation approach, and the conversion of the trisaccharide to building blocks tailored for iterative glycosylation. The construction and evaluation of stereotunable 2-N-3-O-oxazolidinone donors for the common bacterial 2-acetamido-4-amino-2,4,6-trideoxy-α-d-galactopyranoside motif is also described, as is a key intermediate for their efficient synthesis.
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Affiliation(s)
- Aisling Ní Cheallaigh
- Centre for Synthesis and Chemical Biology, School of Chemistry, University College Dublin, Belfield, Dublin 4, Ireland
- Centre for Synthesis and Chemical Biology, School of Chemistry, University College Dublin, Belfield, Dublin 4, Ireland
| | - Stefan Oscarson
- Centre for Synthesis and Chemical Biology, School of Chemistry, University College Dublin, Belfield, Dublin 4, Ireland
- Centre for Synthesis and Chemical Biology, School of Chemistry, University College Dublin, Belfield, Dublin 4, Ireland
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17
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Highly regioselective homoallyl alcohol protection through ring opening of p-methoxybenzylidene acetal. Tetrahedron Lett 2016. [DOI: 10.1016/j.tetlet.2016.10.068] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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18
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19
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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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20
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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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21
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Guazzelli L, Ulc R, Oscarson S. Synthesis of a Glucuronic Acid-Containing Thioglycoside Trisaccharide Building Block and Its Use in the Assembly of Cryptococcus Neoformans Capsular Polysaccharide Fragments. ChemistryOpen 2015; 4:729-39. [PMID: 27308199 PMCID: PMC4906494 DOI: 10.1002/open.201500143] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2015] [Indexed: 11/27/2022] Open
Abstract
As part of an ongoing project aimed at identifying protective capsular polysaccharide epitopes for the development of vaccine candidates against the fungal pathogen Cryptococcus neoformans, the synthesis and glycosylation properties of a naphthalenylmethyl (NAP) orthogonally protected trisaccharide thioglycoside, a common building block for construction of serotype B and C capsular polysaccharide structures, were investigated. Ethyl (benzyl 2,3,4‐tri‐O‐benzyl‐β‐d‐glucopyranosyl‐ uronate)‐(1→2)‐[2,3,4‐tri‐O‐benzyl‐β‐d‐xylopyranosyl‐(1→4)]‐6‐O‐benzyl‐3‐O‐(2‐naphthalenylmethyl)‐1‐thio‐α‐d‐mannopyranoside was prepared and used both as a donor and an acceptor in glycosylation reactions to obtain spacer equipped hexa‐ and heptasaccharide structures suitable either for continued elongation or for deprotection and printing onto a glycan array or conjugation to a carrier protein. The glycosylation reactions proceeded with high yields and α‐selectivity, proving the viability of the building block approach also for construction of 4‐O‐xylosyl‐containing C. neoformans CPS structures.
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Affiliation(s)
- Lorenzo Guazzelli
- School of Chemistry and Chemical Biology University College Dublin Belfield 4 Dublin Ireland
| | - Rebecca Ulc
- School of Chemistry and Chemical Biology University College Dublin Belfield 4 Dublin Ireland
| | - Stefan Oscarson
- School of Chemistry and Chemical Biology University College Dublin Belfield 4 Dublin Ireland
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22
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Guazzelli L, Ulc R, Rydner L, Oscarson S. A synthetic strategy to xylose-containing thioglycoside tri- and tetrasaccharide building blocks corresponding to Cryptococcus neoformans capsular polysaccharide structures. Org Biomol Chem 2015; 13:6598-610. [DOI: 10.1039/c5ob00766f] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
C. neoformansthiosaccharide building blocks were prepared and their conversion to glycosyl acceptors as well as use as glycosyl donors investigated.
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Affiliation(s)
- Lorenzo Guazzelli
- Center for Synthesis and Chemical Biology
- University College Dublin
- Dublin 4
- Ireland
| | - Rebecca Ulc
- Center for Synthesis and Chemical Biology
- University College Dublin
- Dublin 4
- Ireland
| | - Lina Rydner
- Center for Synthesis and Chemical Biology
- University College Dublin
- Dublin 4
- Ireland
| | - Stefan Oscarson
- Center for Synthesis and Chemical Biology
- University College Dublin
- Dublin 4
- Ireland
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23
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François-Heude M, Méndez-Ardoy A, Cendret V, Lafite P, Daniellou R, Ortiz Mellet C, García Fernández JM, Moreau V, Djedaïni-Pilard F. Synthesis of High-Mannose Oligosaccharide Analogues through Click Chemistry: True Functional Mimics of Their Natural Counterparts Against Lectins? Chemistry 2014; 21:1978-91. [DOI: 10.1002/chem.201405481] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2014] [Indexed: 01/17/2023]
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24
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Kurimoto K, Yamamura H, Miyagawa A. Chemical approach for the syntheses of GM4 isomers with sialic acid to non-natural linkage positions on galactose. Carbohydr Res 2014; 401:39-50. [PMID: 25464080 DOI: 10.1016/j.carres.2014.10.018] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2014] [Revised: 10/21/2014] [Accepted: 10/21/2014] [Indexed: 10/24/2022]
Abstract
Cell-surface glycans containing sialic acid are involved in various biological phenomena. However, the syntheses of GM4 derivatives with (2 → 2) and (2 → 4) linkages have not been investigated to date. In this study, sialylation of all of the hydroxyl groups on galactose were investigated for the syntheses of GM4 isomers. Regioselective sialylation was achieved via protection of galactosyl acceptors using electron-rich benzyl groups. These synthetic sialylated glycans will prove to be useful tools for studying unidentified carbohydrate-mediated biological roles.
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Affiliation(s)
- Kenta Kurimoto
- Graduate School of Engineering, Nagoya Institute of Technology, Gokiso-cho, Showa-ku, Nagoya 466-8555, Japan
| | - Hatsuo Yamamura
- Graduate School of Engineering, Nagoya Institute of Technology, Gokiso-cho, Showa-ku, Nagoya 466-8555, Japan
| | - Atsushi Miyagawa
- Graduate School of Engineering, Nagoya Institute of Technology, Gokiso-cho, Showa-ku, Nagoya 466-8555, Japan.
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25
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Liu H, Li X. Synthesis of cyclogentiotriose by macrocyclization via a ring-closing glycosylation. Tetrahedron Lett 2014. [DOI: 10.1016/j.tetlet.2014.08.063] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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26
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Dara S, Saikam V, Yadav M, Singh PP, Vishwakarma RA. HClO4–silica-catalysed regioselective opening of benzylidene acetals and its application towards regioselective HO-4 glycosylation of benzylidene acetals in one-pot. Carbohydr Res 2014; 391:93-6. [DOI: 10.1016/j.carres.2014.01.011] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2013] [Revised: 01/11/2014] [Accepted: 01/13/2014] [Indexed: 12/01/2022]
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27
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Adak S, Emmadi M, Kulkarni SS. Synthesis of the trisaccharide moiety and a cholesteryl analog of phyteumosides. RSC Adv 2014. [DOI: 10.1039/c3ra47523a] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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28
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Xu P, Xu W, Dai Y, Yang Y, Yu B. Efficient synthesis of a library of heparin tri- and tetrasaccharides relevant to the substrate of heparanase. Org Chem Front 2014. [DOI: 10.1039/c4qo00039k] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
A robust glycosylation protocol was fixed to construct the GlcN–(1α→4)-GlcA/IdoA linkagesen routeto heparin oligosaccharides.
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Affiliation(s)
- Peng Xu
- State Key Laboratory of Bio-organic and Natural Products Chemistry
- Shanghai Institute of Organic Chemistry
- Chinese Academy of Sciences
- Shanghai 200032, China
| | - Weichang Xu
- State Key Laboratory of Bio-organic and Natural Products Chemistry
- Shanghai Institute of Organic Chemistry
- Chinese Academy of Sciences
- Shanghai 200032, China
| | - Yuanwei Dai
- State Key Laboratory of Bio-organic and Natural Products Chemistry
- Shanghai Institute of Organic Chemistry
- Chinese Academy of Sciences
- Shanghai 200032, China
| | - You Yang
- State Key Laboratory of Bio-organic and Natural Products Chemistry
- Shanghai Institute of Organic Chemistry
- Chinese Academy of Sciences
- Shanghai 200032, China
| | - Biao Yu
- State Key Laboratory of Bio-organic and Natural Products Chemistry
- Shanghai Institute of Organic Chemistry
- Chinese Academy of Sciences
- Shanghai 200032, China
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29
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Shie CR, Tzeng ZH, Wang CC, Hung SC. Metal Trifluoromethanesulfonate-Catalyzed Regioselective Reductive Ring Opening of Benzylidene Acetals. J CHIN CHEM SOC-TAIP 2013. [DOI: 10.1002/jccs.200900076] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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30
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Xue X, Yin Z, Meng X, Li Z. A carbohydrate-based approach for the total synthesis of (-)-dinemasone B, (+)-4a-epi-dinemasone B, (-)-7-epi-dinemasone B, and (+)-4a,7-Di-epi-dinemasone B. J Org Chem 2013; 78:9354-65. [PMID: 23987228 DOI: 10.1021/jo4015694] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
(-)-Dinemasone B was isolated by Krohn and co-workers from a culture of the endophytic fungus Dinemasporium strigosum and has shown promising antimicrobial activity. Described herein is the first total synthesis of (-)-dinemasone B, (+)-4a-epi-dinemasone B, (-)-7-epi-dinemasone B, and (+)-4a,7-di-epi-dinemasone B. Their absolute configurations were also determined. The developed synthesis features a stereoselective reduction of C-glycosidic ketone, lactonization, and E-olefination of aldehyde starting from D-glucose.
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Affiliation(s)
- Xiaochao Xue
- The State Key Laboratory of Natural and Biomimetic Drugs, Department of Chemical Biology, School of Pharmaceutical Sciences, Peking University , Beijing 100191, P. R. China
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31
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Heuckendorff M, Pedersen CM, Bols M. Conformationally Armed 3,6-Tethered Glycosyl Donors: Synthesis, Conformation, Reactivity, and Selectivity. J Org Chem 2013; 78:7234-48. [DOI: 10.1021/jo4012464] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Mads Heuckendorff
- Department of Chemistry, University of Copenhagen, DK-2100 Copenhagen Ø, Denmark
| | | | - Mikael Bols
- Department of Chemistry, University of Copenhagen, DK-2100 Copenhagen Ø, Denmark
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32
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Facile synthesis of tetrasaccharide aided by fluorous chemistry toward a dengue virus vaccine. Mol Divers 2013; 17:613-8. [DOI: 10.1007/s11030-013-9451-0] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2013] [Accepted: 05/02/2013] [Indexed: 10/26/2022]
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33
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Sarpe VA, Kulkarni SS. Desymmetrization of trehalose via regioselective DIBAL reductive ring opening of benzylidene and substituted benzylidene acetals. Org Biomol Chem 2013; 11:6460-5. [DOI: 10.1039/c3ob41389f] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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34
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Abstract
Mono- and disaccharides of sulfonated glucosamines (GlcN sulfoforms) conjugated to 2-aminoethyl linkers were generated by solid-phase synthesis. Orthogonally protected intermediates were tethered onto tritylated polystyrene resin beads, subjected to a modular sequence of deprotection and sulfonation steps, then cleaved from solid support without degradation of N- or O-sulfate esters using solvolytic conditions, and finally purified by reverse-phase HPLC to afford the title compounds.
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Affiliation(s)
- Runhui Liu
- Department of Chemistry, Purdue University, 560 Oval Drive, West Lafayette, IN 47907-2084
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35
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Braitsch M, Kählig H, Kontaxis G, Fischer M, Kawada T, Konrat R, Schmid W. Synthesis of fluorinated maltose derivatives for monitoring protein interaction by (19)F NMR. Beilstein J Org Chem 2012; 8:448-55. [PMID: 22509216 PMCID: PMC3326624 DOI: 10.3762/bjoc.8.51] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2012] [Accepted: 03/08/2012] [Indexed: 12/05/2022] Open
Abstract
A novel reporter system, which is applicable to the 19F NMR investigation of protein interactions, is presented. This approach uses 2-F-labeled maltose as a spy ligand to indirectly probe protein–ligand or protein–protein interactions of proteins fused or tagged to the maltose-binding protein (MBP). The key feature is the simultaneous NMR observation of both 19F NMR signals of gluco/manno-type-2-F-maltose-isomers; one isomer (α-gluco-type) binds to MBP and senses the protein interaction, and the nonbinding isomers (β-gluco- and/or α/β-manno-type) are utilized as internal references. Moreover, this reporter system was used for relative affinity studies of fluorinated and nonfluorinated carbohydrates to the maltose-binding protein, which were found to be in perfect agreement with published X-ray data. The results of the NMR competition experiments together with the established correlation between 19F chemical shift data and molecular interaction patterns, suggest valuable applications for studies of protein–ligand interaction interfaces.
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Affiliation(s)
- Michaela Braitsch
- Department of Organic Chemistry, University of Vienna, Währinger Strasse 38, A-1090 Vienna, Austria
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36
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Cendret V, François-Heude M, Méndez-Ardoy A, Moreau V, Fernández JMG, Djedaïni-Pilard F. Design and synthesis of a "click" high-mannose oligosaccharide mimic emulating Man8 binding affinity towards Con A. Chem Commun (Camb) 2012; 48:3733-5. [PMID: 22399071 DOI: 10.1039/c2cc30773a] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
A dendritic "click" mannooligomer mimicking the high-mannose oligosaccharide Man(8) has been designed by replacing some of the inner mannopyranosyl subunits with triazole moieties; evaluation of its binding affinity towards the mannose-specific lectin concanavalin A revealed striking similarities between the "click" mimic and the natural Man(8).
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Affiliation(s)
- Virginie Cendret
- Laboratoire des Glucides FRE-CNRS 3517, Institut de Chimie de Picardie, Université de Picardie Jules Verne, 33 Rue Saint-Leu, 80039 Amiens Cedex 1, France
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37
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Zhang YJ, Dayoub W, Chen GR, Lemaire M. TMDS as a Dual-Purpose Reductant in the Regioselective Ring Cleavage of Hexopyranosyl Acetals to Ethers. European J Org Chem 2012. [DOI: 10.1002/ejoc.201101682] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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38
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Joseph AA, Verma VP, Liu XY, Wu CH, Dhurandhare VM, Wang CC. TMSOTf-Catalyzed Silylation: Streamlined Regioselective One-Pot Protection and Acetylation of Carbohydrates. European J Org Chem 2011. [DOI: 10.1002/ejoc.201101267] [Citation(s) in RCA: 59] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
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39
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Ohlin M, Johnsson R, Ellervik U. Regioselective reductive openings of 4,6-benzylidene acetals: synthetic and mechanistic aspects. Carbohydr Res 2011; 346:1358-70. [DOI: 10.1016/j.carres.2011.03.032] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2011] [Accepted: 03/22/2011] [Indexed: 11/24/2022]
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40
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Shankaraiah N, Markandeya N, Srinivasulu V, Sreekanth K, Reddy CS, Santos LS, Kamal A. A One-Pot Azido Reductive Tandem Mono-N-Alkylation Employing Dialkylboron Triflates: Online ESI-MS Mechanistic Investigation. J Org Chem 2011; 76:7017-26. [DOI: 10.1021/jo200931m] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Nagula Shankaraiah
- National Institute of Pharmaceutical Education and Research (NIPER), Hyderabad-500 037, India
| | - Nagula Markandeya
- Department of Chemistry, Kakatiya University, Warangal 506 009, A.P, India
| | - Vunnam Srinivasulu
- Division of Organic Chemistry, Indian Institute of Chemical Technology, Hyderabad 500 607, India
| | - Kokkonda Sreekanth
- Division of Organic Chemistry, Indian Institute of Chemical Technology, Hyderabad 500 607, India
| | - Ch. Sanjeeva Reddy
- Department of Chemistry, Kakatiya University, Warangal 506 009, A.P, India
| | - Leonardo S. Santos
- Laboratory of Asymmetric Synthesis, Chemistry Institute of Natural Resources, University of Talca, Talca, P.O. Box 747, Chile
| | - Ahmed Kamal
- Division of Organic Chemistry, Indian Institute of Chemical Technology, Hyderabad 500 607, India
- Catalytic Chemistry Chair, Chemistry Department, College of Science, King Saud University, Riyadh, Saudi Arabia
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41
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Regioselective ring opening of exo- and endo-3,4-benzylidene acetals of arabinopyranoside derivatives with Lewis acids and reducing agents. Carbohydr Res 2011; 346:927-32. [DOI: 10.1016/j.carres.2011.01.031] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2010] [Revised: 01/24/2011] [Accepted: 01/27/2011] [Indexed: 11/21/2022]
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42
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Liu L, Pohl NLB. A fluorous phosphate protecting group with applications to carbohydrate synthesis. Org Lett 2011; 13:1824-7. [PMID: 21384825 DOI: 10.1021/ol2003435] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The first fluorous protecting group for phosphate is reported. This group can be used as a facile tag for purification and be removed under mild reducing conditions using zinc and ammonium formate. Synthesis of a disaccharide from Leishmania using this fluorous protecting group demonstrated the group's stability to the acidic conditions necessary for glycosylation as well as its orthogonality to several other common protecting groups.
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Affiliation(s)
- Lin Liu
- Department of Chemistry, and the Plant Sciences Institute, Hach Hall, Iowa State University, Ames, Iowa 50011-3111, United States
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43
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Shi Y, Dayoub W, Chen GR, Lemaire M. TMDS–Pd/C: a convenient system for the reduction of acetals to ethers. Tetrahedron Lett 2011. [DOI: 10.1016/j.tetlet.2011.01.038] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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44
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Lee IC, Zulueta MML, Shie CR, Arco SD, Hung SC. Deuterium-isotope study on the reductive ring opening of benzylidene acetals. Org Biomol Chem 2011; 9:7655-8. [DOI: 10.1039/c1ob06056b] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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45
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Iodine–sodium cyanoborohydride-mediated reductive ring opening of 4,6-O-benzylidene acetals of hexopyranosides. Carbohydr Res 2010; 345:2709-13. [DOI: 10.1016/j.carres.2010.10.013] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2010] [Revised: 10/04/2010] [Accepted: 10/10/2010] [Indexed: 11/16/2022]
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46
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Pedersen CM, Figueroa‐Perez I, Boruwa J, Lindner B, Ulmer AJ, Zähringer U, Schmidt RR. Synthesis of the Core Structure of the Lipoteichoic Acid ofStreptococcus pneumoniae. Chemistry 2010; 16:12627-41. [DOI: 10.1002/chem.201001204] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Christian Marcus Pedersen
- Fachbereich Chemie, Universität Konstanz, Fach 725, 78457 Konstanz (Germany), Fax: (+49) 7531‐883135
| | - Ignacio Figueroa‐Perez
- Fachbereich Chemie, Universität Konstanz, Fach 725, 78457 Konstanz (Germany), Fax: (+49) 7531‐883135
| | - Joshodeep Boruwa
- Fachbereich Chemie, Universität Konstanz, Fach 725, 78457 Konstanz (Germany), Fax: (+49) 7531‐883135
| | - Buko Lindner
- Leibniz‐Zentrum für Medizin und Biowissenschaften, Forschungszentrum Borstel, Parkallee 1‐40, 23845 Borstel (Germany)
| | - Artur J. Ulmer
- Leibniz‐Zentrum für Medizin und Biowissenschaften, Forschungszentrum Borstel, Parkallee 1‐40, 23845 Borstel (Germany)
| | - Ulrich Zähringer
- Leibniz‐Zentrum für Medizin und Biowissenschaften, Forschungszentrum Borstel, Parkallee 1‐40, 23845 Borstel (Germany)
| | - Richard R. Schmidt
- Fachbereich Chemie, Universität Konstanz, Fach 725, 78457 Konstanz (Germany), Fax: (+49) 7531‐883135
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47
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Sundgren A, Lahmann M, Oscarson S. Synthesis of 6-PEtN-α-D-GalpNAc-(1->6)-β-D-Galp-(1->4)-β-D-GlcpNAc-(1->3)-β-D-Galp-(1->4)-β-D-Glcp, a Haemophilus influenzae lipopolysacharide structure, and biotin and protein conjugates thereof. Beilstein J Org Chem 2010; 6:704-8. [PMID: 20978608 PMCID: PMC2956385 DOI: 10.3762/bjoc.6.80] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2010] [Accepted: 07/07/2010] [Indexed: 12/02/2022] Open
Abstract
BACKGROUND In bacteria with truncated lipopolysaccharide structures, i.e., lacking the O-antigen polysaccharide part, core structures are exposed to the immune system upon infection and thus their use as carbohydrate surface antigens in glycoconjugate vaccines can be considered and investigated. One such suggested structure from Haemophilus influenzae LPS is the phosphorylated pentasaccharide 6-PEtN-α-D-GalpNAc-(1→6)-β-D-Galp-(1→4)-β-D-GlcpNAc-(1→3)-β-D-Galp-(1→4)-β-D-Glcp. RESULTS Starting from a spacer-containing lactose derivative a suitably protected lacto-N-neotetraose tetrasaccharide structure was constructed through subsequential couplings with two thioglycoside donors, a glucosamine residue followed by a galactose derivative, using NIS/AgOTf as promoter. Removal of a silyl protecting group at the primary position of the non-reducing end residue afforded an acceptor to which the terminal α-galactosamine moiety was introduced using a 2-azido bromo sugar and halide assisted coupling conditions. Global deprotection afforded the non-phosphorylated target pentasaccharide, whereas removal of a silyl group from the primary position of the non-reducing end residue produced a free hydroxy group which was phosphorylated using H-phosphonate chemistry to yield the phosphoethanolamine-containing protected pentasaccharide. Partial deprotection afforded the phosphorylated target pentasaccharide with a free spacer amino group but with a protected phosphoethanolamino group. Conjugation of the spacer amino group to biotin or dimethyl squarate followed by deprotection of the phosphoethanolamino group and, in the case of the squarate derivative, further reaction with a protein then afforded the title conjugates. CONCLUSION An effective synthesis of a biologically interesting pentasaccharide structure has been accomplished. The target pentasaccharide, an α-GalNAc substituted lacto-N-neotetraose structure, comprises a phosphoethanolamine motif and a spacer aglycon. Through the spacer, biotin and protein conjugates of the title compound have been constructed to allow further use in biological experiments.
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Affiliation(s)
- Andreas Sundgren
- Department of Chemistry, Göteborg University, S-412 96 Gothenburg, Sweden
| | - Martina Lahmann
- The School of Chemistry, University of Bangor, Alun Roberts Building, Deiniol Road, Bangor, Gwynedd LL57 2UW, U.K
| | - Stefan Oscarson
- Centre for Synthesis and Chemical Biology, University College Dublin, Belfield, Dublin 4, Ireland, Phone: +353 17162318
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Pastore A, Adinolfi M, Iadonisi A, Valerio S. Rapid assembly of gp120 oligosaccharide moieties via one-pot glycosidation–deprotection sequences. Carbohydr Res 2010; 345:1316-23. [DOI: 10.1016/j.carres.2010.02.025] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2010] [Revised: 02/17/2010] [Accepted: 02/25/2010] [Indexed: 01/08/2023]
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Wu X, Cui L, Lipinski T, Bundle D. Synthesis of Monomeric and Dimeric Repeating Units of the Zwitterionic Type 1 Capsular Polysaccharide fromStreptococcus pneumoniae. Chemistry 2010; 16:3476-88. [DOI: 10.1002/chem.200902460] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
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Pastore A, Adinolfi M, Iadonisi A, Valerio S. One-Pot Catalytic Glycosidation/Fmoc Removal - An Iterable Sequence for Straightforward Assembly of Oligosaccharides Related to HIV gp120. European J Org Chem 2010. [DOI: 10.1002/ejoc.200901122] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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