1
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Liu X, Song Y, Liu A, Zhou Y, Zhu Q, Lin Y, Sun H, Zhu K, Liu W, Ding N, Xie W, Sun H, Yu B, Xu P, Li W. More than a Leaving Group: N-Phenyltrifluoroacetimidate as a Remote Directing Group for Highly α-Selective 1,2-cis Glycosylation. Angew Chem Int Ed Engl 2022; 61:e202201510. [PMID: 35266604 DOI: 10.1002/anie.202201510] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2022] [Indexed: 12/31/2022]
Abstract
The anomeric configuration can greatly affect the biological functions and activities of carbohydrates. Herein, we report that N-phenyltrifluoroacetimidoyl (PTFAI), a well-known leaving group for catalytic glycosylation, can act as a stereodirecting group for the challenging 1,2-cis α-glycosylation. Utilizing rapidly accessible 1,6-di-OPTFAI glycosyl donors, TMSOTf-catalyzed glycosylation occurred with excellent α-selectivity and broad substrate scope, and the remaining 6-OPTFAI group can be cleaved chemoselectively. The remote participation of 6-OPTFAI is supported by the first characterization of the crucial 1,6-bridged bicyclic oxazepinium ion intermediates by low-temperature NMR spectroscopy. These cations were found to be relatively stable and mainly responsible for the present stereoselectivities. Further application is highlighted in glycosylation reactions toward trisaccharide heparins as well as the convergent synthesis of chacotriose derivatives using a bulky 2,4-di-O-glycosylated donor.
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Affiliation(s)
- Xianglai Liu
- Department of Medicinal Chemistry, School of Pharmacy, China Pharmaceutical University, 639 Longmian Avenue, Nanjing, Jiangsu, 211198, China
| | - Yingying Song
- Department of Medicinal Chemistry, School of Pharmacy, China Pharmaceutical University, 639 Longmian Avenue, Nanjing, Jiangsu, 211198, China
| | - Ao Liu
- Department of Medicinal Chemistry, School of Pharmacy, China Pharmaceutical University, 639 Longmian Avenue, Nanjing, Jiangsu, 211198, China
| | - Yueer Zhou
- Department of Medicinal Chemistry, School of Pharmacy, China Pharmaceutical University, 639 Longmian Avenue, Nanjing, Jiangsu, 211198, China
| | - Qian Zhu
- State Key Laboratory of Bioorganic and Natural Products Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Road, Shanghai, 200032, China
| | - Yetong Lin
- Department of Medicinal Chemistry, School of Pharmacy, China Pharmaceutical University, 639 Longmian Avenue, Nanjing, Jiangsu, 211198, China
| | - Huiyong Sun
- Department of Medicinal Chemistry, School of Pharmacy, China Pharmaceutical University, 639 Longmian Avenue, Nanjing, Jiangsu, 211198, China
| | - Kaidi Zhu
- State Key Laboratory of Bioorganic and Natural Products Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Road, Shanghai, 200032, China
| | - Wei Liu
- State Key Laboratory of Bioorganic and Natural Products Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Road, Shanghai, 200032, China
| | - Ning Ding
- Department of Medicinal Chemistry, School of Pharmacy, Fudan University, 826 Zhangheng Road, Shanghai, 200032, China
| | - Weijia Xie
- Department of Medicinal Chemistry, School of Pharmacy, China Pharmaceutical University, 639 Longmian Avenue, Nanjing, Jiangsu, 211198, China
| | - Haopeng Sun
- Department of Medicinal Chemistry, School of Pharmacy, China Pharmaceutical University, 639 Longmian Avenue, Nanjing, Jiangsu, 211198, China
| | - Biao Yu
- State Key Laboratory of Bioorganic and Natural Products Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Road, Shanghai, 200032, China
| | - Peng Xu
- State Key Laboratory of Bioorganic and Natural Products Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Road, Shanghai, 200032, China
| | - Wei Li
- Department of Medicinal Chemistry, School of Pharmacy, China Pharmaceutical University, 639 Longmian Avenue, Nanjing, Jiangsu, 211198, China
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2
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Tiwari V, Murugan K, Sabiah S, Kandasamy J. An Efficient and Direct Esterification of Uronic Acids Using H2SO4-SiO2 at Room Temperature. Tetrahedron Lett 2022. [DOI: 10.1016/j.tetlet.2022.153852] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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3
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Liu X, Song Y, Liu A, Zhou Y, Zhu Q, Lin Y, Sun H, Zhu K, Liu W, Ding N, Xie W, Sun H, Yu B, Xu P, Li W. More than a Leaving Group: N‐Phenyltrifluoroacetimidate as a Remote Directing Group for Highly α‐Selective 1,2‐cis Glycosylation. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202201510] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Xianglai Liu
- China Pharmaceutical University School of Pharmacy Department of Medicinal Chemistry CHINA
| | - Yingying Song
- China Pharmaceutical University School of Pharmacy Department of Medicinal Chemistry CHINA
| | - Ao Liu
- China Pharmaceutical University School of Pharmacy Department of Medicinal Chemistry CHINA
| | - Yueer Zhou
- China Pharmaceutical University School of Pharmacy Department of Medicinal Chemistry CHINA
| | - Qian Zhu
- Shanghai Institute of Organic Chemistry State Key Laboratory of Bioorganic and Natural Products Chemistry CHINA
| | - Yetong Lin
- China Pharmaceutical University School of Pharmacy Department of Medicinal Chemistry CHINA
| | - Huiyong Sun
- China Pharmaceutical University School of Pharmacy Department of Medicinal Chemistry CHINA
| | - Kaidi Zhu
- Shanghai Institute of Organic Chemistry State Key Laboratory of Bioorganic and Natural Products Chemistry CHINA
| | - Wei Liu
- Shanghai Institute of Organic Chemistry State Key Laboratory of Bioorganic and Natural Products Chemistry CHINA
| | - Ning Ding
- Fudan University Department of Medicinal Chemistry CHINA
| | - Weijia Xie
- China Pharmaceutical University School of Pharmacy Department of Medicinal Chemistry CHINA
| | - Haopeng Sun
- China Pharmaceutical University School of Pharmacy Department of Medicinal Chemistry CHINA
| | - Biao Yu
- Shanghai Institute of Organic Chemistry State Key Laboratory of Bioorganic and Natural Products Chemistry CHINA
| | - Peng Xu
- Shanghai Institute of Organic Chemistry State Key Laboratory of Bioorganic and Natural Products Chemistry CHINA
| | - Wei Li
- China Pharmaceutical University School of Pharmacy Department of Medicinal Chemistry 639 Longmian Avenue 211198 Nanjing CHINA
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4
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Zhang H, Wang X, Meng Y, Yang X, Zhao Q, Gao J. Total Synthesis of the Tetrasaccharide Haptens of Vibrio vulnificus MO6-24 and BO62316 and Immunological Evaluation of Their Protein Conjugates. JACS AU 2022; 2:97-108. [PMID: 35098226 PMCID: PMC8790746 DOI: 10.1021/jacsau.1c00190] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/29/2021] [Indexed: 05/15/2023]
Abstract
Vibrio vulnificus is a human pathogen that can cause fatal septicemia and necrotizing infections with a high lethal rate exceeding 50%. V. vulnificus MO6-24 and BO62316 are two predominant virulent strains associated with approximately one-third of the clinical infections. The capsular polysaccharides (CPSs) of V. vulnificus consist of several structurally unique sugars and are excellent targets for developing effective glycoconjugate vaccines. This article describes the first total synthesis of the challenging tetrasaccharide repeating units of V. vulnificus MO6-24 and BO62316 CPSs. A key feature of this synthesis was the assembly of the tetrasaccharide skeleton using a 3,4-branched trisaccharide as the glycosyl donor. A modified TEMPO/BAIB oxidation protocol was developed to directly convert α-d-GalN into α-d-GalAN in not only disaccharides but also tri- and tetrasaccharides. The synthetic haptens were covalently coupled with CRM197 carrier protein via a bifunctional linker. Preliminary immunological studies of the resultant glycoconjugates in mice revealed their high efficacy to induce robust T-cell-dependent immune responses, and the IgG antibodies elicited by each glycoconjugate showed weak cross-reactivity with the other synthetic tetrasaccharide.
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Affiliation(s)
- Han Zhang
- National Glycoengineering
Research Center, Shandong Key Laboratory of Carbohydrate Chemistry
and Glycobiology, NMPA Key Laboratory for Quality Research and Evaluation
of Carbohydrate-based Medicine, Shandong
University, Qingdao, Shandong 266237, China
| | - Xiaohan Wang
- National Glycoengineering
Research Center, Shandong Key Laboratory of Carbohydrate Chemistry
and Glycobiology, NMPA Key Laboratory for Quality Research and Evaluation
of Carbohydrate-based Medicine, Shandong
University, Qingdao, Shandong 266237, China
| | - Youhui Meng
- National Glycoengineering
Research Center, Shandong Key Laboratory of Carbohydrate Chemistry
and Glycobiology, NMPA Key Laboratory for Quality Research and Evaluation
of Carbohydrate-based Medicine, Shandong
University, Qingdao, Shandong 266237, China
| | - Xiaoyu Yang
- National Glycoengineering
Research Center, Shandong Key Laboratory of Carbohydrate Chemistry
and Glycobiology, NMPA Key Laboratory for Quality Research and Evaluation
of Carbohydrate-based Medicine, Shandong
University, Qingdao, Shandong 266237, China
| | - Qingpeng Zhao
- National Glycoengineering
Research Center, Shandong Key Laboratory of Carbohydrate Chemistry
and Glycobiology, NMPA Key Laboratory for Quality Research and Evaluation
of Carbohydrate-based Medicine, Shandong
University, Qingdao, Shandong 266237, China
| | - Jian Gao
- National Glycoengineering
Research Center, Shandong Key Laboratory of Carbohydrate Chemistry
and Glycobiology, NMPA Key Laboratory for Quality Research and Evaluation
of Carbohydrate-based Medicine, Shandong
University, Qingdao, Shandong 266237, China
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5
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Li X, Wang D, Zhang P, Yu G, Cai C. Recent Advances in the Chemical Synthesis of Marine Acidic Carbohydrates. CURR ORG CHEM 2021. [DOI: 10.2174/1385272824999201230120805] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
The ocean supplies abundant active compounds, including small organic molecules,
proteins, lipids, and carbohydrates, with diverse biological functions. The high-value
transformation of marine carbohydrates primarily refers to their pharmaceutical, food, and
cosmetic applications. However, it is still a big challenge to obtain these marine carbohydrates
in well-defined structures. Synthesis is a powerful approach to access marine oligosaccharides,
polysaccharide derivatives, and glycomimetics. In this review, we focus on the
chemical synthesis of marine acidic carbohydrates with uronic acid building blocks such as
alginate, and glycosaminoglycans. Regioselective sulfation using a chemical approach is also
highlighted in the synthesis of marine oligosaccharides, as well as the multivalent glycodendrimers
and glycopolymers for achieving specific functions. This review summarizes recent
advances in the synthesis of marine acidic carbohydrates, as well as their preliminary structure activity relationship
(SAR) studies, which establishes a foundation for the development of novel marine carbohydrate-based drugs and
functional reagents.
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Affiliation(s)
- Xinru Li
- Key Laboratory of Marine Drugs, Ministry of Education & Shandong Provincial Key Laboratory of Glycoscience and Glycotechnology, School of Medicine and Pharmacy, Ocean University of China, Qingdao 266003, China
| | - Depeng Wang
- Key Laboratory of Marine Drugs, Ministry of Education & Shandong Provincial Key Laboratory of Glycoscience and Glycotechnology, School of Medicine and Pharmacy, Ocean University of China, Qingdao 266003, China
| | - Ping Zhang
- Key Laboratory of Marine Drugs, Ministry of Education & Shandong Provincial Key Laboratory of Glycoscience and Glycotechnology, School of Medicine and Pharmacy, Ocean University of China, Qingdao 266003, China
| | - Guangli Yu
- Key Laboratory of Marine Drugs, Ministry of Education & Shandong Provincial Key Laboratory of Glycoscience and Glycotechnology, School of Medicine and Pharmacy, Ocean University of China, Qingdao 266003, China
| | - Chao Cai
- Key Laboratory of Marine Drugs, Ministry of Education & Shandong Provincial Key Laboratory of Glycoscience and Glycotechnology, School of Medicine and Pharmacy, Ocean University of China, Qingdao 266003, China
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6
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Underlin EN, d'Errico C, Böhm M, Madsen R. Synthesis of Glucuronoxylan Hexasaccharides by Preactivation-Based Glycosylations. European J Org Chem 2020. [DOI: 10.1002/ejoc.202000211] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Affiliation(s)
- Emilie N. Underlin
- Department of Chemistry; Technical University of Denmark; 2800 Kgs. Lyngby Denmark
| | - Clotilde d'Errico
- Department of Chemistry; Technical University of Denmark; 2800 Kgs. Lyngby Denmark
| | - Maximilian Böhm
- Department of Chemistry; Technical University of Denmark; 2800 Kgs. Lyngby Denmark
| | - Robert Madsen
- Department of Chemistry; Technical University of Denmark; 2800 Kgs. Lyngby Denmark
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7
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van der Vorm S, Hansen T, van Rijssel ER, Dekkers R, Madern JM, Overkleeft HS, Filippov DV, van der Marel GA, Codée JDC. Furanosyl Oxocarbenium Ion Conformational Energy Landscape Maps as a Tool to Study the Glycosylation Stereoselectivity of 2-Azidofuranoses, 2-Fluorofuranoses and Methyl Furanosyl Uronates. Chemistry 2019; 25:7149-7157. [PMID: 30882938 PMCID: PMC6563709 DOI: 10.1002/chem.201900651] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2019] [Revised: 03/12/2019] [Indexed: 12/16/2022]
Abstract
The 3D shape of glycosyl oxocarbenium ions determines their stability and reactivity and the stereochemical course of SN 1 reactions taking place on these reactive intermediates is dictated by the conformation of these species. The nature and configuration of functional groups on the carbohydrate ring affect the stability of glycosyl oxocarbenium ions and control the overall shape of the cations. We herein map the stereoelectronic substituent effects of the C2-azide, C2-fluoride and C4-carboxylic acid ester on the stability and reactivity of the complete suite of diastereoisomeric furanoses by using a combined computational and experimental approach. Surprisingly, all furanosyl donors studied react in a highly stereoselective manner to provide the 1,2-cis products, except for the reactions in the xylose series. The 1,2-cis selectivity for the ribo-, arabino- and lyxo-configured furanosides can be traced back to the lowest-energy 3 E or E3 conformers of the intermediate oxocarbenium ions. The lack of selectivity for the xylosyl donors is related to the occurrence of oxocarbenium ions adopting other conformations.
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8
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Tiwari V, Singh AK, Chaudhary P, Seeberger PH, Kandasamy J. Synthesis of photolabile protecting group (PPG) protected uronic acid building blocks: applications in carbohydrate synthesis with the assistance of a continuous flow photoreactor. Org Chem Front 2019. [DOI: 10.1039/c9qo01010f] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Photolabile groups protected uronic acid building blocks were synthesized and used for carbohydrate synthesis with the help of a continuous flow photo-reactor.
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Affiliation(s)
- Varsha Tiwari
- Department of chemistry
- Indian Institute of Technology (BHU)
- Varanasi
- India
| | - Adesh Kumar Singh
- Department of chemistry
- Indian Institute of Technology (BHU)
- Varanasi
- India
| | - Priyanka Chaudhary
- Department of chemistry
- Indian Institute of Technology (BHU)
- Varanasi
- India
| | - Peter H. Seeberger
- Max-Planck-Institute of Colloids and Interfaces
- Department of Biomolecular Systems
- 14476 Potsdam
- Germany
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9
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Demeter F, Veres F, Herczeg M, Borbás A. Short Synthesis of Idraparinux by Applying a 2-O
-Methyl-4,6-O
-arylmethylene Thioidoside as a 1,2-trans
-α-Selective Glycosyl Donor. European J Org Chem 2018. [DOI: 10.1002/ejoc.201801349] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Fruzsina Demeter
- Department of Pharmaceutical Chemistry; University of Debrecen; Egyetem tér 1 4032 Debrecen Hungary
| | - Fanni Veres
- Department of Pharmaceutical Chemistry; University of Debrecen; Egyetem tér 1 4032 Debrecen Hungary
| | - Mihály Herczeg
- Department of Pharmaceutical Chemistry; University of Debrecen; Egyetem tér 1 4032 Debrecen Hungary
- Research Group for Oligosaccharide Chemistry; Hungarian Academy of Sciences; Egyetem tér 1 4032 Debrecen Hungary
| | - Anikó Borbás
- Department of Pharmaceutical Chemistry; University of Debrecen; Egyetem tér 1 4032 Debrecen Hungary
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10
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Dhakal B, Crich D. Synthesis and Stereocontrolled Equatorially Selective Glycosylation Reactions of a Pseudaminic Acid Donor: Importance of the Side-Chain Conformation and Regioselective Reduction of Azide Protecting Groups. J Am Chem Soc 2018; 140:15008-15015. [PMID: 30351022 DOI: 10.1021/jacs.8b09654] [Citation(s) in RCA: 37] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Pseudaminic acid is an amino deoxy sialic acid whose glycosides are essential components of many pathogenic Gram-negative bacterial cell walls including those from Pseudomonas aeruginosa, Vibrio cholerae, Campylobacter jejuni, Campylobacter coli, Vibrio vulnificus, and Pseudoalteromonas distincta. The study of pseudaminic acid glycosides is however hampered by poor availability from nature and the paucity of good synthetic methods and limited to no understanding of the factors controlling stereoselectivity. Conformational analysis of the side chains of various stereoisomeric sialic acids suggested that the side chain of pseudaminic acid would take up the most electron-withdrawing trans, gauche-conformation, as opposed to the gauche, gauche conformation of N-acetyl neuraminic acid and the gauche, trans-conformtion of 7- epi N-acetyl neuraminic acid, leading to the prediction of high equatorial selectivity. This prediction is borne out by the synthesis of a suitably protected pseudaminic acid donor from N-acetyl neuraminic acid in 20 steps and 5% overall yield and by the exquisite equatorial selectivity it displays in coupling reactions with typical glycosyl acceptors. The selectivity of the glycosylation reactions is further buttressed by the development and implementation of conditions for the regioselective release of the two amines from the corresponding azides, such as required for the preparation of the lipopolysaccharides. These findings open the way to the synthesis and study of pseudaminic acid-based bacterial lipopolysaccharides and, importantly in the broader context of glycosylation reactions in general, underline the significant role played by side-chain conformation in the control of reactivity and selectivity.
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Affiliation(s)
- Bibek Dhakal
- Department of Chemistry , Wayne State University , 5101 Cass Avenue , Detroit , Michigan 48202 , United States
| | - David Crich
- Department of Chemistry , Wayne State University , 5101 Cass Avenue , Detroit , Michigan 48202 , United States
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11
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Herczeg M, Demeter F, Balogh T, Kelemen V, Borbás A. Rapid Synthesis of l
-Idosyl Glycosyl Donors from α-Thioglucosides for the Preparation of Heparin Disaccharides. European J Org Chem 2018. [DOI: 10.1002/ejoc.201800425] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Affiliation(s)
- Mihály Herczeg
- Department of Pharmaceutical Chemistry; University of Debrecen; Egyetem tér 1 H-4032 Debrecen Hungary
| | - Fruzsina Demeter
- Department of Pharmaceutical Chemistry; University of Debrecen; Egyetem tér 1 H-4032 Debrecen Hungary
| | - Tímea Balogh
- Department of Pharmaceutical Chemistry; University of Debrecen; Egyetem tér 1 H-4032 Debrecen Hungary
| | - Viktor Kelemen
- Department of Pharmaceutical Chemistry; University of Debrecen; Egyetem tér 1 H-4032 Debrecen Hungary
| | - Anikó Borbás
- Department of Pharmaceutical Chemistry; University of Debrecen; Egyetem tér 1 H-4032 Debrecen Hungary
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12
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Tiwari V, Badavath VN, Singh AK, Kandasamy J. A highly efficient TEMPO mediated oxidation of sugar primary alcohols into uronic acids using 1-chloro-1,2-benziodoxol-3(1H)-one at room temperature. Tetrahedron Lett 2018. [DOI: 10.1016/j.tetlet.2018.05.021] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/16/2022]
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13
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Seeberger PH, Pereira CL, Khan N, Xiao G, Diago-Navarro E, Reppe K, Opitz B, Fries BC, Witzenrath M. A Semi-Synthetic Glycoconjugate Vaccine Candidate for Carbapenem-Resistant Klebsiella pneumoniae. Angew Chem Int Ed Engl 2017; 56:13973-13978. [PMID: 28815890 PMCID: PMC5819008 DOI: 10.1002/anie.201700964] [Citation(s) in RCA: 60] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2017] [Revised: 08/05/2017] [Indexed: 12/15/2022]
Abstract
Hospital-acquired infections are an increasingly serious health concern. Infections caused by carpabenem-resistant Klebsiella pneumoniae (CR-Kp) are especially problematic, with a 50 % average survival rate. CR-Kp are isolated from patients with ever greater frequency, 7 % within the EU but 62 % in Greece. At a time when antibiotics are becoming less effective, no vaccines to protect from this severe bacterial infection exist. Herein, we describe the convergent [3+3] synthesis of the hexasaccharide repeating unit from its capsular polysaccharide and related sequences. Immunization with the synthetic hexasaccharide 1 glycoconjugate resulted in high titers of cross-reactive antibodies against CR-Kp CPS in mice and rabbits. Whole-cell ELISA was used to establish the surface staining of CR-Kp strains. The antibodies raised were found to promote phagocytosis. Thus, this semi-synthetic glycoconjugate is a lead for the development of a vaccine against a rapidly progressing, deadly bacterium.
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Affiliation(s)
- Peter H. Seeberger
- Department of Biomolecular Systems, Max Planck Institute of Colloids and Interfaces, Am Mühlenberg 1, 14424 Potsdam (Germany)
- Institute of Chemistry and Biochemistry, Freie Universität Berlin, Arnimallee 22, 14195 Berlin (Germany)
| | - Claney L. Pereira
- Department of Biomolecular Systems, Max Planck Institute of Colloids and Interfaces, Am Mühlenberg 1, 14424 Potsdam (Germany)
- Institute of Chemistry and Biochemistry, Freie Universität Berlin, Arnimallee 22, 14195 Berlin (Germany)
| | - Naeem Khan
- Department of Biomolecular Systems, Max Planck Institute of Colloids and Interfaces, Am Mühlenberg 1, 14424 Potsdam (Germany)
- Institute of Chemistry and Biochemistry, Freie Universität Berlin, Arnimallee 22, 14195 Berlin (Germany)
| | - Guozhi Xiao
- Department of Biomolecular Systems, Max Planck Institute of Colloids and Interfaces, Am Mühlenberg 1, 14424 Potsdam (Germany)
- Institute of Chemistry and Biochemistry, Freie Universität Berlin, Arnimallee 22, 14195 Berlin (Germany)
| | - Elizabeth Diago-Navarro
- Department of Medicine, Division of Infectious Diseases, Stony Brook University, 101 Nicolls Road, Stony Brook, NY 11794 (USA)
| | - Katrin Reppe
- Charité—Universitätsmedizin Berlin, Department of Infectious Diseases and Pulmonary Medicine, Charitéplatz 1, 10117 Berlin (Germany)
| | - Bastian Opitz
- Charité—Universitätsmedizin Berlin, Department of Infectious Diseases and Pulmonary Medicine, Charitéplatz 1, 10117 Berlin (Germany)
| | - Bettina C. Fries
- Department of Medicine, Division of Infectious Diseases, Stony Brook University, 101 Nicolls Road, Stony Brook, NY 11794 (USA)
| | - Martin Witzenrath
- Charité—Universitätsmedizin Berlin, Department of Infectious Diseases and Pulmonary Medicine, Charitéplatz 1, 10117 Berlin (Germany)
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14
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Seeberger PH, Pereira CL, Khan N, Xiao G, Diago-Navarro E, Reppe K, Opitz B, Fries BC, Witzenrath M. A Semi-Synthetic Glycoconjugate Vaccine Candidate for Carbapenem-ResistantKlebsiella pneumoniae. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201700964] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Affiliation(s)
- Peter H. Seeberger
- Department of Biomolecular Systems; Max Planck Institute of Colloids and Interfaces; Am Mühlenberg 1 14424 Potsdam Germany
- Institute of Chemistry and Biochemistry; Freie Universität Berlin; Arnimallee 22 14195 Berlin Germany
| | - Claney L. Pereira
- Department of Biomolecular Systems; Max Planck Institute of Colloids and Interfaces; Am Mühlenberg 1 14424 Potsdam Germany
- Institute of Chemistry and Biochemistry; Freie Universität Berlin; Arnimallee 22 14195 Berlin Germany
| | - Naeem Khan
- Department of Biomolecular Systems; Max Planck Institute of Colloids and Interfaces; Am Mühlenberg 1 14424 Potsdam Germany
- Institute of Chemistry and Biochemistry; Freie Universität Berlin; Arnimallee 22 14195 Berlin Germany
| | - Guozhi Xiao
- Department of Biomolecular Systems; Max Planck Institute of Colloids and Interfaces; Am Mühlenberg 1 14424 Potsdam Germany
- Institute of Chemistry and Biochemistry; Freie Universität Berlin; Arnimallee 22 14195 Berlin Germany
| | - Elizabeth Diago-Navarro
- Department of Medicine, Division of Infectious Diseases; Stony Brook University; 101 Nicolls Road Stony Brook NY 11794 USA
| | - Katrin Reppe
- Charité-Universitätsmedizin Berlin; Department of Infectious Diseases and Pulmonary Medicine; Charitéplatz 1 10117 Berlin Germany
| | - Bastian Opitz
- Charité-Universitätsmedizin Berlin; Department of Infectious Diseases and Pulmonary Medicine; Charitéplatz 1 10117 Berlin Germany
| | - Bettina C. Fries
- Department of Medicine, Division of Infectious Diseases; Stony Brook University; 101 Nicolls Road Stony Brook NY 11794 USA
| | - Martin Witzenrath
- Charité-Universitätsmedizin Berlin; Department of Infectious Diseases and Pulmonary Medicine; Charitéplatz 1 10117 Berlin Germany
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15
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Kabotso DEK, Pohl NLB. Pentavalent Bismuth as a Universal Promoter for S-Containing Glycosyl Donors with a Thiol Additive. Org Lett 2017; 19:4516-4519. [DOI: 10.1021/acs.orglett.7b02080] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Daniel E. K. Kabotso
- Department of Chemistry, Indiana University, 120A
Simon Hall, 212 South Hawthorne Drive, Bloomington, Indiana 47405, United States
| | - Nicola L. B. Pohl
- Department of Chemistry, Indiana University, 120A
Simon Hall, 212 South Hawthorne Drive, Bloomington, Indiana 47405, United States
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16
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Hagen B, van Dijk JHM, Zhang Q, Overkleeft HS, van der Marel GA, Codée JDC. Synthesis of the Staphylococcus aureus Strain M Capsular Polysaccharide Repeating Unit. Org Lett 2017; 19:2514-2517. [PMID: 28485610 PMCID: PMC5442609 DOI: 10.1021/acs.orglett.7b00747] [Citation(s) in RCA: 38] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The synthesis of the Staphylococcus aureus strain M capsular polysaccharide repeating unit is reported. A postglycosylation oxidation strategy was utilized for the construction of the α-galactosaminuronic acid linkages, relying on a stereoselective 2-azido-4,6-O-di-tert-butylsilylidene galactopyranoside donor, for which the selectivity was assessed by model glycosylations. The α-fucosamine linkage was installed stereoselectively, using a reactive 2-azidofucosyl donor. An unexpected glycosidic bond cleavage during the TEMPO/PhI(OAc)2-mediated oxidation of a disaccharide intermediate was circumvented by a TEMPO/PhI(OAc)2-Pinnick oxidation protocol.
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Affiliation(s)
- Bas Hagen
- Leiden Institute of Chemistry, Universiteit Leiden , Einsteinweg 55, 2333CC Leiden, The Netherlands
| | - J Hessel M van Dijk
- Leiden Institute of Chemistry, Universiteit Leiden , Einsteinweg 55, 2333CC Leiden, The Netherlands
| | - Qingju Zhang
- Leiden Institute of Chemistry, Universiteit Leiden , Einsteinweg 55, 2333CC Leiden, The Netherlands
| | - Herman S Overkleeft
- Leiden Institute of Chemistry, Universiteit Leiden , Einsteinweg 55, 2333CC Leiden, The Netherlands
| | - Gijsbert A van der Marel
- Leiden Institute of Chemistry, Universiteit Leiden , Einsteinweg 55, 2333CC Leiden, The Netherlands
| | - Jeroen D C Codée
- Leiden Institute of Chemistry, Universiteit Leiden , Einsteinweg 55, 2333CC Leiden, The Netherlands
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17
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van Rijssel ER, Janssen APA, Males A, Davies GJ, van der Marel GA, Overkleeft HS, Codée JDC. Conformational Behaviour of Azasugars Based on Mannuronic Acid. Chembiochem 2017; 18:1297-1304. [DOI: 10.1002/cbic.201700080] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2017] [Indexed: 11/06/2022]
Affiliation(s)
- Erwin R. van Rijssel
- Leiden Institute of Chemistry; Leiden University; Einsteinweg 55 2333 CC Leiden The Netherlands
| | - Antonius P. A. Janssen
- Leiden Institute of Chemistry; Leiden University; Einsteinweg 55 2333 CC Leiden The Netherlands
| | - Alexandra Males
- York Structural Biology Laboratory; Department of Chemistry; The University of York; York YO10 5DD UK
| | - Gideon J. Davies
- York Structural Biology Laboratory; Department of Chemistry; The University of York; York YO10 5DD UK
| | | | - Herman S. Overkleeft
- Leiden Institute of Chemistry; Leiden University; Einsteinweg 55 2333 CC Leiden The Netherlands
| | - Jeroen D. C. Codée
- Leiden Institute of Chemistry; Leiden University; Einsteinweg 55 2333 CC Leiden The Netherlands
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18
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Seeberger PH, Pereira CL, Govindan S. Total synthesis of a Streptococcus pneumoniae serotype 12F CPS repeating unit hexasaccharide. Beilstein J Org Chem 2017; 13:164-173. [PMID: 28228857 PMCID: PMC5301915 DOI: 10.3762/bjoc.13.19] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2016] [Accepted: 01/01/2017] [Indexed: 12/11/2022] Open
Abstract
The Gram-positive bacterium Streptococcus pneumoniae causes severe disease globally. Vaccines that prevent S. pneumoniae infections induce antibodies against epitopes within the bacterial capsular polysaccharide (CPS). A better immunological understanding of the epitopes that protect from bacterial infection requires defined oligosaccharides obtained by total synthesis. The key to the synthesis of the S. pneumoniae serotype 12F CPS hexasaccharide repeating unit that is not contained in currently used glycoconjugate vaccines is the assembly of the trisaccharide β-D-GalpNAc-(1→4)-[α-D-Glcp-(1→3)]-β-D-ManpNAcA, in which the branching points are equipped with orthogonal protecting groups. A linear approach relying on the sequential assembly of monosaccharide building blocks proved superior to a convergent [3 + 3] strategy that was not successful due to steric constraints. The synthetic hexasaccharide is the starting point for further immunological investigations.
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Affiliation(s)
- Peter H Seeberger
- 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
| | - Claney L Pereira
- Vaxxilon Deutschland GmbH, Magnusstrasse 11, 12489 Berlin, Germany
| | - Subramanian Govindan
- Department of Biomolecular Systems, Max Planck Institute of Colloids and Interfaces, Am Mühlenberg 1, 14476 Potsdam, Germany
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19
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Weishaupt MW, Matthies S, Hurevich M, Pereira CL, Hahm HS, Seeberger PH. Automated glycan assembly of a S. pneumoniae serotype 3 CPS antigen. Beilstein J Org Chem 2016; 12:1440-6. [PMID: 27559395 PMCID: PMC4979738 DOI: 10.3762/bjoc.12.139] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2016] [Accepted: 06/13/2016] [Indexed: 11/23/2022] Open
Abstract
Vaccines against S. pneumoniae, one of the most prevalent bacterial infections causing severe disease, rely on isolated capsular polysaccharide (CPS) that are conjugated to proteins. Such isolates contain a heterogeneous oligosaccharide mixture of different chain lengths and frame shifts. Access to defined synthetic S. pneumoniae CPS structures is desirable. Known syntheses of S. pneumoniae serotype 3 CPS rely on a time-consuming and low-yielding late-stage oxidation step, or use disaccharide building blocks which limits variability. Herein, we report the first iterative automated glycan assembly (AGA) of a conjugation-ready S. pneumoniae serotype 3 CPS trisaccharide. This oligosaccharide was assembled using a novel glucuronic acid building block to circumvent the need for a late-stage oxidation. The introduction of a washing step with the activator prior to each glycosylation cycle greatly increased the yields by neutralizing any residual base from deprotection steps in the synthetic cycle. This process improvement is applicable to AGA of many other oligosaccharides.
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Affiliation(s)
- Markus W Weishaupt
- Department of Biomolecular Systems, Max Planck Institute of Colloids and Interfaces, Am Mühlenberg 1, 14476 Potsdam, Germany and Department of Chemistry and Biochemistry, Freie Universität Berlin, Arnimallee 22, 14195 Berlin, Germany
| | - Stefan Matthies
- Department of Biomolecular Systems, Max Planck Institute of Colloids and Interfaces, Am Mühlenberg 1, 14476 Potsdam, Germany and Department of Chemistry and Biochemistry, Freie Universität Berlin, Arnimallee 22, 14195 Berlin, Germany
| | - Mattan Hurevich
- Department of Biomolecular Systems, Max Planck Institute of Colloids and Interfaces, Am Mühlenberg 1, 14476 Potsdam, Germany and Department of Chemistry and Biochemistry, Freie Universität Berlin, Arnimallee 22, 14195 Berlin, Germany
| | - Claney L Pereira
- Department of Biomolecular Systems, Max Planck Institute of Colloids and Interfaces, Am Mühlenberg 1, 14476 Potsdam, Germany and Department of Chemistry and Biochemistry, Freie Universität Berlin, Arnimallee 22, 14195 Berlin, Germany
| | - Heung Sik Hahm
- Department of Biomolecular Systems, Max Planck Institute of Colloids and Interfaces, Am Mühlenberg 1, 14476 Potsdam, Germany and Department of Chemistry and Biochemistry, Freie Universität Berlin, Arnimallee 22, 14195 Berlin, Germany
| | - Peter H Seeberger
- Department of Biomolecular Systems, Max Planck Institute of Colloids and Interfaces, Am Mühlenberg 1, 14476 Potsdam, Germany and Department of Chemistry and Biochemistry, Freie Universität Berlin, Arnimallee 22, 14195 Berlin, Germany
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20
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Banerjee A, Senthilkumar S, Baskaran S. Benzylidene Acetal Protecting Group as Carboxylic Acid Surrogate: Synthesis of Functionalized Uronic Acids and Sugar Amino Acids. Chemistry 2015; 22:902-6. [PMID: 26572799 DOI: 10.1002/chem.201503998] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2015] [Indexed: 02/05/2023]
Abstract
Direct oxidation of the 4,6-O-benzylidene acetal protecting group to C-6 carboxylic acid has been developed that provides an easy access to a wide range of biologically important and synthetically challenging uronic acid and sugar amino acid derivatives in good yields. The RuCl3 -NaIO4 -mediated oxidative cleavage method eliminates protection and deprotection steps and the reaction takes place under mild conditions. The dual role of the benzylidene acetal, as a protecting group and source of carboxylic acid, was exploited in the efficient synthesis of six-carbon sialic acid analogues and disaccharides bearing uronic acids, including glycosaminoglycan analogues.
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Affiliation(s)
- Amit Banerjee
- Department of Chemistry, Indian Institute of Technology Madras, Chennai-, 600036, India
| | | | - Sundarababu Baskaran
- Department of Chemistry, Indian Institute of Technology Madras, Chennai-, 600036, India.
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21
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Liu L, Zha J, DiGiandomenico A, McAllister D, Stover CK, Wang Q, Boons GJ. Synthetic Enterobacterial Common Antigen (ECA) for the Development of a Universal Immunotherapy for Drug-Resistant Enterobacteriaceae. Angew Chem Int Ed Engl 2015; 54:10953-7. [PMID: 26216389 PMCID: PMC4664081 DOI: 10.1002/anie.201505420] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2015] [Indexed: 11/06/2022]
Abstract
All Enterobacteriaceae express a polysaccharide known as enterobacterial common antigen (ECA), which is an attractive target for the development of universally acting immunotherapies. The first chemical synthesis of ECA-derived oligosaccharides for the development of such therapies is described. A number of synthetic challenges had to be addressed, including the development of concise synthetic procedures for unusual monosaccharides, the selection of appropriate orthogonal protecting groups, the development of stereoselective glycosylation methods, appropriate timing for the introduction of the carboxylic acid groups on the ManpNAcA moieties, and the selection of appropriate conditions for the reduction of multiple azido moieties. The synthetic compounds were employed to uncover immunodominant moieties of ECA. Furthermore, a monoclonal antibody (mAb) was developed that binds to ECA and can selectively recognize a wide range of Enterobacteriaceae species.
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Affiliation(s)
- Lin Liu
- Complex Carbohydrate Research Center, The University of Georgia, 315 Riverbend Road, Athens, GA 30602 (USA)
| | - Jingying Zha
- Department of Infectious Diseases, MedImmune, LLC, Gaithersburg, MD 20878 (USA)
| | | | | | - C Kendall Stover
- Department of Infectious Diseases, MedImmune, LLC, Gaithersburg, MD 20878 (USA)
| | - Qun Wang
- Department of Infectious Diseases, MedImmune, LLC, Gaithersburg, MD 20878 (USA).
| | - Geert-Jan Boons
- Complex Carbohydrate Research Center, The University of Georgia, 315 Riverbend Road, Athens, GA 30602 (USA).
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22
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Liu L, Zha J, DiGiandomenico A, McAllister D, Stover CK, Wang Q, Boons GJ. Synthetic Enterobacterial Common Antigen (ECA) for the Development of a Universal Immunotherapy for Drug-ResistantEnterobacteriaceae. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201505420] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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23
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Mehtiö T, Toivari M, Wiebe MG, Harlin A, Penttilä M, Koivula A. Production and applications of carbohydrate-derived sugar acids as generic biobased chemicals. Crit Rev Biotechnol 2015; 36:904-16. [DOI: 10.3109/07388551.2015.1060189] [Citation(s) in RCA: 64] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Affiliation(s)
- Tuomas Mehtiö
- VTT Technical Research Centre of Finland, Espoo, Finland
| | - Mervi Toivari
- VTT Technical Research Centre of Finland, Espoo, Finland
| | | | - Ali Harlin
- VTT Technical Research Centre of Finland, Espoo, Finland
| | - Merja Penttilä
- VTT Technical Research Centre of Finland, Espoo, Finland
| | - Anu Koivula
- VTT Technical Research Centre of Finland, Espoo, Finland
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24
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Li J, Dai Y, Li W, Laval S, Xu P, Yu B. Effective Synthesis of α-d-GlcN-(1→4)-d-GlcA/l-IdoA Glycosidic Linkage under Gold(I) Catalysis. ASIAN J ORG CHEM 2015. [DOI: 10.1002/ajoc.201500113] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Jiakun Li
- State Key Laboratory of Bio-organic and Natural Products Chemistry; Shanghai Institute of Organic Chemistry; Chinese Academy of Sciences; 345 Lingling Road Shanghai 200032 China
- Department of Chemistry; University of Science and Technology of China; 96 Jinzhai Road, Hefei Anhui 230026 China
| | - Yuanwei Dai
- State Key Laboratory of Bio-organic and Natural Products Chemistry; Shanghai Institute of Organic Chemistry; Chinese Academy of Sciences; 345 Lingling Road Shanghai 200032 China
| | - Wei Li
- State Key Laboratory of Bio-organic and Natural Products Chemistry; Shanghai Institute of Organic Chemistry; Chinese Academy of Sciences; 345 Lingling Road Shanghai 200032 China
| | - Stéphane Laval
- State Key Laboratory of Bio-organic and Natural Products Chemistry; Shanghai Institute of Organic Chemistry; Chinese Academy of Sciences; 345 Lingling Road Shanghai 200032 China
| | - Peng Xu
- State Key Laboratory of Bio-organic and Natural Products Chemistry; Shanghai Institute of Organic Chemistry; Chinese Academy of Sciences; 345 Lingling Road Shanghai 200032 China
| | - Biao Yu
- State Key Laboratory of Bio-organic and Natural Products Chemistry; Shanghai Institute of Organic Chemistry; Chinese Academy of Sciences; 345 Lingling Road Shanghai 200032 China
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25
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Hansen SU, Dalton CE, Baráth M, Kwan G, Raftery J, Jayson GC, Miller GJ, Gardiner JM. Synthesis of l-Iduronic Acid Derivatives via [3.2.1] and [2.2.2] l-Iduronic Lactones from Bulk Glucose-Derived Cyanohydrin Hydrolysis: A Reversible Conformationally Switched Superdisarmed/Rearmed Lactone Route to Heparin Disaccharides. J Org Chem 2015; 80:3777-89. [DOI: 10.1021/jo502776f] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Affiliation(s)
- Steen U. Hansen
- Manchester
Institute of Biotechnology and the School of Chemistry, 131 Princess Street, The University of Manchester, Manchester M1 7DN, U.K
| | - Charlotte E. Dalton
- Manchester
Institute of Biotechnology and the School of Chemistry, 131 Princess Street, The University of Manchester, Manchester M1 7DN, U.K
| | - Marek Baráth
- Manchester
Institute of Biotechnology and the School of Chemistry, 131 Princess Street, The University of Manchester, Manchester M1 7DN, U.K
| | - Glenn Kwan
- Manchester
Institute of Biotechnology and the School of Chemistry, 131 Princess Street, The University of Manchester, Manchester M1 7DN, U.K
| | - James Raftery
- The
School of Chemistry, The University of Manchester, Manchester M13 9PL, U.K
| | - Gordon C. Jayson
- Institute
of Cancer Sciences, Christie Hospital and University of Manchester, Wilmslow Road, Manchester M20 4BX, U.K
| | - Gavin J. Miller
- Manchester
Institute of Biotechnology and the School of Chemistry, 131 Princess Street, The University of Manchester, Manchester M1 7DN, U.K
- The
School of Chemistry, The University of Manchester, Manchester M13 9PL, U.K
| | - John M. Gardiner
- Manchester
Institute of Biotechnology and the School of Chemistry, 131 Princess Street, The University of Manchester, Manchester M1 7DN, U.K
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26
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Kancharla PK, Kato T, Crich D. Probing the influence of protecting groups on the anomeric equilibrium in sialic acid glycosides with the persistent radical effect. J Am Chem Soc 2014; 136:5472-80. [PMID: 24606062 PMCID: PMC4004215 DOI: 10.1021/ja501276r] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2014] [Indexed: 12/11/2022]
Abstract
A method for the investigation of the influence of protecting groups on the anomeric equilibrium in the sialic acid glycosides has been developed on the basis of the equilibration of O-sialyl hydroxylamines by reversible homolytic scission of the glycosidic bond following the dictates of the Fischer-Ingold persistent radical effect. It is found that a trans-fused 4O,5N-oxazolidinone group stabilizes the equatorial glycoside, i.e., reduces the anomeric effect, when compared to the 4O,5N-diacetyl protected systems. This effect is discussed in terms of the powerful electron-withdrawing nature of the oxazolidinone system, which in turn is a function of its strong dipole moment in the mean plane of the pyranose ring system. The new equilibration method displays a small solvent effect and is most pronounced in less polar media consistent with the anomeric effect in general. The unusual (for anomeric radicals) poor kinetic selectivity of anomeric sialyl radicals is discussed in terms of the planar π-type structure of these radicals and of competing 1,3-diaxial interactions in the diastereomeric transition states for trapping on the α- and β-faces of the radical.
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Affiliation(s)
- Pavan K Kancharla
- Department of Chemistry, Wayne State University , 5101 Cass Avenue, Detroit, Michigan 48202, United States
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27
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Dhamale OP, Zong C, Al-Mafraji K, Boons GJ. New glucuronic acid donors for the modular synthesis of heparan sulfate oligosaccharides. Org Biomol Chem 2014; 12:2087-98. [PMID: 24549353 PMCID: PMC4009994 DOI: 10.1039/c3ob42312c] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Although hundreds of heparan sulfate (HS) binding proteins have been implicated in a myriad of physiological and pathological processes, very little information is known about ligand requirements for binding and mediating biological activities by these proteins. We report here a streamlined approach for the preparation of modular disaccharide building blocks that will facilitate the assembly of libraries of HS oligosaccharides for structure-activity relationship studies. In particular, we have found that glucuronic acid donors, which usually perform poorly in glycosylations, can give high yields of coupling products when the C-2 hydroxyl is protected with a permanent 4-acetoxy-2,2-dimethyl butanoyl- (PivOAc) or temporary levulinoyl (Lev) ester and the C-4 hydroxyl modified with a selectively removable 2-methylnaphthyl (Nap) ether. It has been shown that the PivOAc ester can be removed without affecting sulfate esters making it an ideal protecting group for HS oligosaccharide assembly. Iduronic acid donors exhibit more favorable glycosyl donating properties and a compound protected with a Lev ester at C-2 and an Fmoc function at the C-4 hydroxyl gave coupling products in high yield. The new donors avoid post-glycosylation oxidation and therefore allow the facile preparation of modular disaccharide building blocks.
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Affiliation(s)
- Omkar P Dhamale
- Complex Carbohydrate Research Center, The University of Georgia, 315 Riverbend Road, Athens, GA 30602, USA.
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28
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Moumé-Pymbock M, Furukawa T, Mondal S, Crich D. Probing the influence of a 4,6-O-acetal on the reactivity of galactopyranosyl donors: verification of the disarming influence of the trans-gauche conformation of C5-C6 bonds. J Am Chem Soc 2013; 135:14249-55. [PMID: 23984633 PMCID: PMC3814037 DOI: 10.1021/ja405588x] [Citation(s) in RCA: 60] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
The effect of a 4,6-O-alkylidene acetal on the rate of acid-catalyzed hydrolysis of methyl galactopyranosides and of spontaneous hydrolysis of 2,4-dinitrophenyl galactopyranosides has been studied through the synthesis and hydrolysis of analogs in which O6 is replaced by a methoxymethylene unit in which the methoxy group adopts either an equatorial or an axial position according to the configuration. Consistent with earlier studies under both acid-catalyzed and spontaneous hydrolysis conditions, the alkylidene acetal, or its 7-carba analog, retards hydrolysis with respect to comparable systems lacking the cyclic protecting group. The configuration at C6 in the 7-carba analogs does not influence the rate of acid-catalyzed hydrolysis but has a minor influence on the rate of spontaneous hydrolysis of the 2,4-dinitrophenyl galactosides, confirming earlier studies on the role played by the hydroxymethyl group conformation on glycoside reactivity. The benzylidene acetal is found to stabilize the α-anomer of galactopyranose derivatives relative to monocyclic analogs. Reasons for the α-selectivity of 4,6-O-benzylidene-protected galactopyranosyl donors bearing neighboring group-active protecting groups at O2 are discussed.
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Affiliation(s)
- Myriame Moumé-Pymbock
- Department of Chemistry, Wayne State University, 5101 Cass Avenue, Detroit, MI 48202
| | - Takayuki Furukawa
- Department of Chemistry, Wayne State University, 5101 Cass Avenue, Detroit, MI 48202
| | - Sujit Mondal
- Department of Chemistry, Wayne State University, 5101 Cass Avenue, Detroit, MI 48202
| | - David Crich
- Department of Chemistry, Wayne State University, 5101 Cass Avenue, Detroit, MI 48202
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29
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Zakharova AN, Madsen R, Clausen MH. Synthesis of a Backbone Hexasaccharide Fragment of the Pectic Polysaccharide Rhamnogalacturonan I. Org Lett 2013; 15:1826-9. [DOI: 10.1021/ol400430p] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Alexandra N. Zakharova
- Center for Nanomedicine and Theranostics and Department of Chemistry, Technical University of Denmark, Kemitorvet, Building 207, DK-2800 Kgs. Lyngby, Denmark
| | - Robert Madsen
- Center for Nanomedicine and Theranostics and Department of Chemistry, Technical University of Denmark, Kemitorvet, Building 207, DK-2800 Kgs. Lyngby, Denmark
| | - Mads H. Clausen
- Center for Nanomedicine and Theranostics and Department of Chemistry, Technical University of Denmark, Kemitorvet, Building 207, DK-2800 Kgs. Lyngby, Denmark
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30
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Kancharla PK, Navuluri C, Crich D. Dissecting the influence of oxazolidinones and cyclic carbonates in sialic acid chemistry. Angew Chem Int Ed Engl 2012; 51:11105-9. [PMID: 22976809 PMCID: PMC3489474 DOI: 10.1002/anie.201204400] [Citation(s) in RCA: 54] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2012] [Revised: 08/02/2012] [Indexed: 11/11/2022]
Abstract
At a moment's notice: Thermal equilibration of 1 and mass spectral analysis of sialyl phosphates suggest that the 4O,5N-oxazolidinone and the 4,5-O-carbonate systems influence the anomeric effect and the mechanisms of sialidation by virtue of their dipole moment in the mean plane of the pyranose ring. The electron-withdrawing effect destabilizes 2 and promotes associative glycosylation mechanisms. TEMPO = 2,2,6,6-tetramethylpiperidine N-oxide.
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Affiliation(s)
- Pavan K Kancharla
- Department of Chemistry, Wayne State University, 5101 Cass Avenue, Detroit, MI 48202, USA
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31
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Kancharla PK, Navuluri C, Crich D. Dissecting the Influence of Oxazolidinones and Cyclic Carbonates in Sialic Acid Chemistry. Angew Chem Int Ed Engl 2012. [DOI: 10.1002/ange.201204400] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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32
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Christina AE, Muns JA, Olivier JQA, Visser L, Hagen B, van den Bos LJ, Overkleeft HS, Codée JDC, van der Marel GA. On the Reactivity and Selectivity of Galacturonic Acid Lactones. European J Org Chem 2012. [DOI: 10.1002/ejoc.201200717] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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33
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de Jong AR, Hagen B, van der Ark V, Overkleeft HS, Codée JDC, Van der Marel GA. Exploring and Exploiting the Reactivity of Glucuronic Acid Donors. J Org Chem 2011; 77:108-25. [DOI: 10.1021/jo201586r] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Ana-Rae de Jong
- Leiden Institute of Chemistry, Leiden University, P.O. Box 9502, 2300 RA Leiden, The Netherlands
| | - Bas Hagen
- Leiden Institute of Chemistry, Leiden University, P.O. Box 9502, 2300 RA Leiden, The Netherlands
| | - Vincent van der Ark
- Leiden Institute of Chemistry, Leiden University, P.O. Box 9502, 2300 RA Leiden, The Netherlands
| | - Herman S. Overkleeft
- Leiden Institute of Chemistry, Leiden University, P.O. Box 9502, 2300 RA Leiden, The Netherlands
| | - Jeroen D. C. Codée
- Leiden Institute of Chemistry, Leiden University, P.O. Box 9502, 2300 RA Leiden, The Netherlands
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34
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Crich D. Methodology development and physical organic chemistry: a powerful combination for the advancement of glycochemistry. J Org Chem 2011; 76:9193-209. [PMID: 21919522 PMCID: PMC3215858 DOI: 10.1021/jo2017026] [Citation(s) in RCA: 98] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Abstract
This Perspective outlines work in the Crich group on the diastereoselective synthesis of the so-called difficult classes of glycosidic bond: the 2-deoxy-β-glycopyranosides, the β-mannopyranosides, the α-sialosides, the α-glucopyranosides, and the β-arabinofuranosides with an emphasis on the critical interplay between mechanism and methodology development.
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Affiliation(s)
- David Crich
- Department of Chemistry, Wayne State University, Detroit, Michigan 48202, USA.
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35
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Walvoort MTC, de Witte W, van Dijk J, Dinkelaar J, Lodder G, Overkleeft HS, Codée JDC, van der Marel GA. Mannopyranosyl uronic acid donor reactivity. Org Lett 2011; 13:4360-3. [PMID: 21776974 DOI: 10.1021/ol2016862] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
The reactivity of a variety of mannopyranosyl uronic acid donors was assessed in a set of competition experiments, in which two (S)-tolyl mannosyl donors were made to compete for a limited amount of promoter (NIS/TfOH). These experiments revealed that the reactivity of mannuronic acid donors is significantly higher than expected based on the electron-withdrawing capacity of the C-5 carboxylic acid ester function. A 4-O-acetyl-β-(S)-tolyl mannuronic acid donor was found to have similar reactivity as per-O-benzyl-α-(S)-tolyl mannose.
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Affiliation(s)
- Marthe T C Walvoort
- Leiden Institute of Chemistry, Leiden University, P.O. Box 9502, 2300 RA Leiden, The Netherlands
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