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Lin LZ, Yang S, Liu WH, Shie JJ. Dichotomous Selectivity in Indium-Mediated Aza-Barbier-Type Allylation of 2- N-Acetyl Glycosyl Sulfinylimines in Brine: Convenient Access to Potent Anti-Influenza Agents. J Org Chem 2022; 87:2324-2335. [PMID: 35075895 DOI: 10.1021/acs.joc.1c02121] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
A highly diastereoselective indium-mediated allylation of 2-N-acetyl glycosyl sulfinylimines in brine under mild reaction conditions is reported. The method allows the achievement of a highly remarkable dichotomous selectivity for substrates, providing a single diastereoisomer of the product in 80-98% yield. With chiral (S)-homoallylic sulfinamide (RS)-5 and (RS)-8 formed as key intermediates, two potent anti-influenza agents, zanamivir and zanaphosphor, were synthesized in 50% and 41% overall yields, respectively.
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Affiliation(s)
- Long-Zhi Lin
- Institute of Chemistry, Academia Sinica, Taipei 11529, Taiwan
| | - Sheng Yang
- Institute of Chemistry, Academia Sinica, Taipei 11529, Taiwan
| | - Wan-Hsuan Liu
- 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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Denner C, Gintner M, Kählig H, Schmid W. Indium-mediated C-allylation of melibiose. Beilstein J Org Chem 2019; 15:2458-2464. [PMID: 31666880 PMCID: PMC6808214 DOI: 10.3762/bjoc.15.238] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2019] [Accepted: 09/25/2019] [Indexed: 11/23/2022] Open
Abstract
The indium-mediated allylation reaction has been applied to melibiose, a disaccharidic substrate. This elongation methodology allows for a short, efficient and diastereoselective approach towards complex glycosylated carbohydrate structures. The stereochemical outcome of the key intermediates, allylated disaccharides, has been determined by X-ray analysis. Ozonolysis of the introduced double bond yielded the unprotected elongated disaccharides in the equilibrium of the pyranoid as well as furanoid isomers in both anomeric forms, respectively. Per-O-acetylation has been performed to facilitate separation of the isomeric mixture for structural identification. The main product revealed to adopt a β-pyranoid form of the elongated unit at the reducing end of the disaccharide.
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Affiliation(s)
- Christian Denner
- Institute of Organic Chemistry, University of Vienna, Währinger Straße 38, A-1090, Vienna, Austria
| | - Manuel Gintner
- Institute of Organic Chemistry, University of Vienna, Währinger Straße 38, A-1090, Vienna, Austria
| | - Hanspeter Kählig
- Institute of Organic Chemistry, University of Vienna, Währinger Straße 38, A-1090, Vienna, Austria
| | - Walther Schmid
- Institute of Organic Chemistry, University of Vienna, Währinger Straße 38, A-1090, Vienna, Austria
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3
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Gintner M, Yoneda Y, Schmölzer C, Denner C, Kählig H, Schmid W. A versatile de novo synthesis of legionaminic acid and 4-epi-legionaminic acid starting from d-serine. Carbohydr Res 2019; 474:34-42. [PMID: 30711766 DOI: 10.1016/j.carres.2019.01.009] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2018] [Revised: 01/18/2019] [Accepted: 01/18/2019] [Indexed: 01/17/2023]
Abstract
Legionaminic acid and 4-epi-legionaminic acid are 5,7-diacetamido nonulosonic acids and are assumed to play a crucial role in the virulence of Legionella pneumophila, the causative agent of Legionnaires' disease. Moreover, they are ideal target motifs for the development of vaccines and pathogen detection. Herein, we present a versatile de novo synthesis of legionaminic acid and 4-epi-legionaminic acid. Starting from simple d-serine, the C9-backbone is built up by two CC-bond formation reactions. First, the protected d-serine motif is elongated utilizing a highly stereoselective nitroaldol reaction to give a C6-precursor of desired d-rhamno configuration. Second, an indium-mediated allylation is employed to further elongate the carbon backbone and introduce a masked α-keto acid function.
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Affiliation(s)
- Manuel Gintner
- AG Schmid, Institute of Organic Chemistry, University of Vienna, Währinger Straße 38, A-1090, Vienna, Austria.
| | - Yuko Yoneda
- Facultiy of Agriculture, Shizuoka University, 836, Ohya, Shizuoka, Japan
| | - Christoph Schmölzer
- AG Schmid, Institute of Organic Chemistry, University of Vienna, Währinger Straße 38, A-1090, Vienna, Austria
| | - Christian Denner
- AG Schmid, Institute of Organic Chemistry, University of Vienna, Währinger Straße 38, A-1090, Vienna, Austria
| | - Hanspeter Kählig
- AG Schmid, Institute of Organic Chemistry, University of Vienna, Währinger Straße 38, A-1090, Vienna, Austria
| | - Walther Schmid
- AG Schmid, Institute of Organic Chemistry, University of Vienna, Währinger Straße 38, A-1090, Vienna, Austria
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4
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Riedl B, Schmid W. A stereoselective and flexible synthesis to access both enantiomers of N-acetylgalactosamine and peracetylated N-acetylidosamine. Beilstein J Org Chem 2018; 14:856-860. [PMID: 29719580 PMCID: PMC5905266 DOI: 10.3762/bjoc.14.71] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2018] [Accepted: 03/26/2018] [Indexed: 01/13/2023] Open
Abstract
Synthetic approaches towards N-acetylgalactosamine (GalNAc) have been attracting considerable interest since this compound is known for its pivotal role in cell–cell interaction and receptor induced cell signaling. Herein, we present a synthetic route in which two of the four stereogenic centers present in the target compound are derived from enantiopure tartaric acid being selectively converted to epoxy alcohols. The key step is the Pd-catalyzed, stereo- and regioselective epoxide opening and subsequent nucleophilic substitution of an azide functionality. This approach enables the synthesis of the naturally D- and unnaturally L-configured GalNAc, as well as both enantiomers of the largely unknown N-acetylidosamine (IdoNAc).
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Affiliation(s)
- Bettina Riedl
- University of Vienna, Institute of Organic Chemistry, Währinger Straße 38, A-1090 Vienna, Austria
| | - Walther Schmid
- University of Vienna, Institute of Organic Chemistry, Währinger Straße 38, A-1090 Vienna, Austria
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5
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Arzel L, Dubreuil D, Dénès F, Silvestre V, Mathé-Allainmat M, Lebreton J. Synthesis of Ribonucleosidic Dimers with an Amide Linkage from d-Xylose. J Org Chem 2016; 81:10742-10758. [DOI: 10.1021/acs.joc.6b01822] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
- Laurence Arzel
- Université de Nantes, CEISAM-UMR CNRS 6230, Faculté des Sciences et
des Techniques, 2 rue
de la Houssinière, BP 92208, 44322 Nantes Cedex 3, France
| | - Didier Dubreuil
- Université de Nantes, CEISAM-UMR CNRS 6230, Faculté des Sciences et
des Techniques, 2 rue
de la Houssinière, BP 92208, 44322 Nantes Cedex 3, France
| | - Fabrice Dénès
- Université de Nantes, CEISAM-UMR CNRS 6230, Faculté des Sciences et
des Techniques, 2 rue
de la Houssinière, BP 92208, 44322 Nantes Cedex 3, France
| | - Virginie Silvestre
- Université de Nantes, CEISAM-UMR CNRS 6230, Faculté des Sciences et
des Techniques, 2 rue
de la Houssinière, BP 92208, 44322 Nantes Cedex 3, France
| | - Monique Mathé-Allainmat
- Université de Nantes, CEISAM-UMR CNRS 6230, Faculté des Sciences et
des Techniques, 2 rue
de la Houssinière, BP 92208, 44322 Nantes Cedex 3, France
| | - Jacques Lebreton
- Université de Nantes, CEISAM-UMR CNRS 6230, Faculté des Sciences et
des Techniques, 2 rue
de la Houssinière, BP 92208, 44322 Nantes Cedex 3, France
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6
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Williams JT, Corcilius L, Kiefel MJ, Payne RJ. Total Synthesis of Native 5,7-Diacetylpseudaminic Acid from N-Acetylneuraminic Acid. J Org Chem 2016; 81:2607-11. [PMID: 26907566 DOI: 10.1021/acs.joc.5b02754] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
The pseudaminic acids are a family of 5,7-diamino-3,5,7,9-tetradeoxynonulosonic acids that are functional components of flagellin and pili proteins within clinically relevant Gram-negative bacteria. Herein, we describe the total synthesis of the most common pseudaminic acid, 5,7-diacetylpseudaminic acid, from N-acetylneuraminic acid. The divergent nature of the route reported here provides a robust and versatile means to access other members of the family, together with analogues, for probing the functional role of the pseudaminic acids and pseudaminic acid derived proteins in the future.
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Affiliation(s)
- James T Williams
- School of Chemistry, The University of Sydney , Sydney, NSW, 2006, Australia
| | - Leo Corcilius
- School of Chemistry, The University of Sydney , Sydney, NSW, 2006, Australia
| | - Milton J Kiefel
- Institute for Glycomics, Griffith University Gold Coast Campus , Southport, QLD, 4222, Australia
| | - Richard J Payne
- School of Chemistry, The University of Sydney , Sydney, NSW, 2006, Australia
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7
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Mirabella S, Cardona F, Goti A. Osmium-Catalyzed Tethered Aminohydroxylation of Glycals: A Stereodirected Access to 2- and 3-Aminosugars. Org Lett 2015; 17:728-31. [DOI: 10.1021/ol503754f] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Stefania Mirabella
- Dipartimento di Chimica “Ugo
Schiff”, Università di Firenze, Via della Lastruccia 3-13, I-50019 Sesto Fiorentino (FI), Italy, associated with ICCOM-CNR, Firenze,
Italy
| | - Francesca Cardona
- Dipartimento di Chimica “Ugo
Schiff”, Università di Firenze, Via della Lastruccia 3-13, I-50019 Sesto Fiorentino (FI), Italy, associated with ICCOM-CNR, Firenze,
Italy
| | - Andrea Goti
- Dipartimento di Chimica “Ugo
Schiff”, Università di Firenze, Via della Lastruccia 3-13, I-50019 Sesto Fiorentino (FI), Italy, associated with ICCOM-CNR, Firenze,
Italy
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8
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Mahrwald R. The long underestimated carbonyl function of carbohydrates – an organocatalyzed shot into carbohydrate chemistry. Chem Commun (Camb) 2015; 51:13868-77. [DOI: 10.1039/c5cc04386g] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Several novel and highly stereoselective C–C bond formation processes of unprotected carbohydrates are described.
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Affiliation(s)
- R. Mahrwald
- Institute of Chemistry
- Humboldt-University
- 12489 Berlin
- Germany
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