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Liu H, Laporte AG, Gónzalez Pinardo D, Fernández I, Hazelard D, Compain P. An Unexpected Lewis Acid-Catalyzed Cascade during the Synthesis of the DEF-Benzoxocin Ring System of Nogalamycin and Menogaril: Mechanistic Elucidation by Intermediate Trapping Experiments and Density Functional Theory Studies. J Org Chem 2024; 89:5634-5649. [PMID: 38554093 DOI: 10.1021/acs.joc.4c00134] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/01/2024]
Abstract
An unexpected Lewis acid-catalyzed carbohydrate rearrangement of a 1,5-bis-glycopyranoside to the product of a formal intramolecular C-aryl glycosylation reaction is reported. Mechanistic studies based mainly on intermediate trapping experiments and density functional theory (DFT) calculations reveal a cascade process involving three transient (a)cyclic oxocarbenium cations, the breaking of three single C(sp3)-O bonds, and the formation of three single bonds (i.e., exo-, endo-, and C-glycosidic bonds), leading to the 2,6-epoxybenzoxocine skeleton of bioactive natural glycoconjugates related to serjanione A and mimocaesalpin E. DFT calculations established that the generation of the pyran moiety embedded in the bridged benzoxocin ring system is likely to proceed through an unusual ring-closure of an ortho-quinone methide intermediate in which the attacking nucleophile is a carbonyl oxygen.
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Affiliation(s)
- Haijuan Liu
- Laboratoire d'Innovation Moléculaire et Applications (LIMA), Université de Strasbourg, Université de Haute-Alsace, CNRS (UMR 7042), Equipe de Synthèse Organique et Molécules Bioactives (SYBIO), Ecole Européenne de Chimie, Polymères et Matériaux (ECPM), 25 Rue Becquerel, 67000 Strasbourg, France
| | - Adrien G Laporte
- Laboratoire d'Innovation Moléculaire et Applications (LIMA), Université de Strasbourg, Université de Haute-Alsace, CNRS (UMR 7042), Equipe de Synthèse Organique et Molécules Bioactives (SYBIO), Ecole Européenne de Chimie, Polymères et Matériaux (ECPM), 25 Rue Becquerel, 67000 Strasbourg, France
| | - Daniel Gónzalez Pinardo
- Departamento de Química Orgánica and Centro de Innovación en Química Avanzada (ORFEO-CINQA), Facultad de Ciencias Químicas, Universidad Complutense de Madrid, 28040 Madrid, Spain
| | - Israel Fernández
- Departamento de Química Orgánica and Centro de Innovación en Química Avanzada (ORFEO-CINQA), Facultad de Ciencias Químicas, Universidad Complutense de Madrid, 28040 Madrid, Spain
| | - Damien Hazelard
- Laboratoire d'Innovation Moléculaire et Applications (LIMA), Université de Strasbourg, Université de Haute-Alsace, CNRS (UMR 7042), Equipe de Synthèse Organique et Molécules Bioactives (SYBIO), Ecole Européenne de Chimie, Polymères et Matériaux (ECPM), 25 Rue Becquerel, 67000 Strasbourg, France
| | - Philippe Compain
- Laboratoire d'Innovation Moléculaire et Applications (LIMA), Université de Strasbourg, Université de Haute-Alsace, CNRS (UMR 7042), Equipe de Synthèse Organique et Molécules Bioactives (SYBIO), Ecole Européenne de Chimie, Polymères et Matériaux (ECPM), 25 Rue Becquerel, 67000 Strasbourg, France
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Liu H, Lang M, Hazelard D, Compain P. A Fries-Type Rearrangement Strategy for the Construction of Stereodefined Quaternary Pseudoanomeric Centers: An Entry into C-Naphthyl Ketosides. J Org Chem 2023; 88:13847-13856. [PMID: 37734008 DOI: 10.1021/acs.joc.3c01474] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/23/2023]
Abstract
The stereodefined construction of quaternary pseudoanomeric centers by way of a BF3·Et2O-catalyzed, Fries-type rearrangement of O-ketosides is described. This method provides new access to C-naphthyl ketosides related to biologically relevant products with good to complete stereocontrol in favor of the β product.
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Affiliation(s)
- Haijuan Liu
- Laboratoire d'Innovation Moléculaire et Applications (LIMA), Univ. de Strasbourg | Univ. de Haute-Alsace | CNRS (UMR 7042), Equipe de Synthèse Organique et Molécules Bioactives (SYBIO), ECPM, 25 Rue Becquerel, 67000 Strasbourg, France
| | - Mylène Lang
- Laboratoire d'Innovation Moléculaire et Applications (LIMA), Univ. de Strasbourg | Univ. de Haute-Alsace | CNRS (UMR 7042), Equipe de Synthèse Organique et Molécules Bioactives (SYBIO), ECPM, 25 Rue Becquerel, 67000 Strasbourg, France
| | - Damien Hazelard
- Laboratoire d'Innovation Moléculaire et Applications (LIMA), Univ. de Strasbourg | Univ. de Haute-Alsace | CNRS (UMR 7042), Equipe de Synthèse Organique et Molécules Bioactives (SYBIO), ECPM, 25 Rue Becquerel, 67000 Strasbourg, France
| | - Philippe Compain
- Laboratoire d'Innovation Moléculaire et Applications (LIMA), Univ. de Strasbourg | Univ. de Haute-Alsace | CNRS (UMR 7042), Equipe de Synthèse Organique et Molécules Bioactives (SYBIO), ECPM, 25 Rue Becquerel, 67000 Strasbourg, France
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3
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Liu H, Laporte AG, Tardieu D, Hazelard D, Compain P. Formal Glycosylation of Quinones with exo-Glycals Enabled by Iron-Mediated Oxidative Radical-Polar Crossover. J Org Chem 2022; 87:13178-13194. [PMID: 36095170 DOI: 10.1021/acs.joc.2c01635] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The intermolecular C-O coupling reaction of 1,4-quinones with exo-glycals under iron hydride hydrogen atom transfer (HAT) conditions is described. This method provides a direct and regioselective access to a wide range of phenolic O-ketosides related to biologically relevant natural products in diastereomeric ratios up to >98:2 in the furanose and pyranose series. No trace of the corresponding C-glycosylated products that might have resulted from the radical alkylation of 1,4-quinones was observed. The results of mechanistic experiments suggest that the key C-O bond-forming event proceeds through an oxidative radical-polar crossover process involving a single-electron transfer between the HAT-generated glycosyl radical and the electron-acceptor quinone.
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Affiliation(s)
- Haijuan Liu
- Laboratoire d'Innovation Moléculaire et Applications (LIMA), Univ. de Strasbourg
- Univ. de Haute-Alsace
- CNRS (UMR 7042), Equipe de Synthèse Organique et Molécules Bioactives (SYBIO), ECPM, 25 Rue Becquerel, 67000 Strasbourg, France
| | - Adrien G Laporte
- Laboratoire d'Innovation Moléculaire et Applications (LIMA), Univ. de Strasbourg
- Univ. de Haute-Alsace
- CNRS (UMR 7042), Equipe de Synthèse Organique et Molécules Bioactives (SYBIO), ECPM, 25 Rue Becquerel, 67000 Strasbourg, France
| | - Damien Tardieu
- Laboratoire d'Innovation Moléculaire et Applications (LIMA), Univ. de Strasbourg
- Univ. de Haute-Alsace
- CNRS (UMR 7042), Equipe de Synthèse Organique et Molécules Bioactives (SYBIO), ECPM, 25 Rue Becquerel, 67000 Strasbourg, France
| | - Damien Hazelard
- Laboratoire d'Innovation Moléculaire et Applications (LIMA), Univ. de Strasbourg
- Univ. de Haute-Alsace
- CNRS (UMR 7042), Equipe de Synthèse Organique et Molécules Bioactives (SYBIO), ECPM, 25 Rue Becquerel, 67000 Strasbourg, France
| | - Philippe Compain
- Laboratoire d'Innovation Moléculaire et Applications (LIMA), Univ. de Strasbourg
- Univ. de Haute-Alsace
- CNRS (UMR 7042), Equipe de Synthèse Organique et Molécules Bioactives (SYBIO), ECPM, 25 Rue Becquerel, 67000 Strasbourg, France
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Peng R, VanNieuwenhze MS. Construction of the DEF–Benzoxocin Ring System of Nogalamycin and Menogaril via a Reductive Heck Cyclization. J Org Chem 2019; 84:173-180. [DOI: 10.1021/acs.joc.8b02575] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Ruogu Peng
- Department of Chemistry, Indiana University-Bloomington 800 East Kirkwood Avenue, Bloomington, Indiana 47405-7102, United States
| | - Michael S. VanNieuwenhze
- Department of Chemistry, Indiana University-Bloomington 800 East Kirkwood Avenue, Bloomington, Indiana 47405-7102, United States
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Kitamura K, Ando Y, Matsumoto T, Suzuki K. Total Synthesis of Aryl C-Glycoside Natural Products: Strategies and Tactics. Chem Rev 2017; 118:1495-1598. [DOI: 10.1021/acs.chemrev.7b00380] [Citation(s) in RCA: 149] [Impact Index Per Article: 21.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Kei Kitamura
- Department
of Applied Chemistry for Environment, School of Science and Technology, Kwansei Gakuin University, 2-1 Gakuen, Sanda, Hyogo 669-1337, Japan
| | - Yoshio Ando
- Department
of Chemistry, Tokyo Institute of Technology, 2-12-1 O-okayama, Meguro-ku, Tokyo 152-8551, Japan
| | - Takashi Matsumoto
- School
of Pharmacy, Tokyo University of Pharmacy and Life Sciences, 1432-1
Horinouchi, Hachioji, Tokyo 192-0392, Japan
| | - Keisuke Suzuki
- Department
of Chemistry, Tokyo Institute of Technology, 2-12-1 O-okayama, Meguro-ku, Tokyo 152-8551, Japan
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Krohn K, Ekkundi VS, Döring D, Jones P. Studies on the Synthesis of the C-Glycosidic Part of Nogalamycin, Part 1. J Carbohydr Chem 2006. [DOI: 10.1080/07328309808002320] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
- Karsten Krohn
- a Fachbereich Chemie und Chemietechnik , Universität-GH Paderborn , Warburger Str. 100, D-33098, Paderborn, Germany E-mail:
| | - Vadiraj S. Ekkundi
- a Fachbereich Chemie und Chemietechnik , Universität-GH Paderborn , Warburger Str. 100, D-33098, Paderborn, Germany E-mail:
| | - Detlev Döring
- a Fachbereich Chemie und Chemietechnik , Universität-GH Paderborn , Warburger Str. 100, D-33098, Paderborn, Germany E-mail:
| | - Peter Jones
- b Institut für Anorganische Chemie , TU Braunschweig, Hagenring 30, D-38106, Braunschweig, Germany
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