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Zhang H, Li B, Yang H, Tan Y, Tan X, Tang Y. Total Synthesis of Carolacton and Demethylcarolactons with Potent Antiviral Activity. Org Lett 2024; 26:370-375. [PMID: 38170945 DOI: 10.1021/acs.orglett.3c04038] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2024]
Abstract
Carolacton, a naturally occurring MTHFD1 inhibitor, exhibits potent inhibitory activity against various RNA viruses including SARS-CoV-2. Herein, we present a concise total synthesis of carolacton, featuring the Krische allylation, Marshall coupling, NHK coupling, and RCM reaction as key elements. Additionally, we have synthesized three simplified carolacton analogues, one of which, namely, 14-demethyl-carolacton, exhibited notable antiviral activity. The present work paves the way for further exploration of the therapeutic potential of carolacton and its analogues.
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Affiliation(s)
- Haoyu Zhang
- School of Pharmaceutical Sciences, MOE Key Laboratory of Bioorganic Phosphorus Chemistry & Chemical Biology, Tsinghua University, Beijing 100084, China
| | - Bingsong Li
- School of Pharmaceutical Sciences, MOE Key Laboratory of Bioorganic Phosphorus Chemistry & Chemical Biology, Tsinghua University, Beijing 100084, China
| | - Hongzhi Yang
- School of Pharmaceutical Sciences, MOE Key Laboratory of Bioorganic Phosphorus Chemistry & Chemical Biology, Tsinghua University, Beijing 100084, China
| | - Ya Tan
- School of Pharmaceutical Sciences, MOE Key Laboratory of Bioorganic Phosphorus Chemistry & Chemical Biology, Tsinghua University, Beijing 100084, China
| | - Xu Tan
- Chinese Institutes for Medical Research, Beijing 100069, China
| | - Yefeng Tang
- School of Pharmaceutical Sciences, MOE Key Laboratory of Bioorganic Phosphorus Chemistry & Chemical Biology, Tsinghua University, Beijing 100084, China
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2
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Menche D. Design and Synthesis of Simplified Polyketide Analogs: New Modalities beyond the Rule of 5. ChemMedChem 2021; 16:2068-2074. [PMID: 33755304 PMCID: PMC8360190 DOI: 10.1002/cmdc.202100150] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2021] [Indexed: 12/29/2022]
Abstract
Natural products provide important lead structures for development of pharmaceutical agents or present attractive tools for medicinal chemistry. However, structurally complex and thus less accessible metabolites defying conventional drug-like properties, as expressed by Pfizer's rule of five, have received less attention as medicinal leads. Traditionally, research focus has been on realizing total syntheses rather than developing more readily available analogs to resolve the critical supply issue. However, very recent studies with complex myxobacterial polyketides have demonstrated that considerable structural simplification may be realized with retention of biological potencies. The context, underlying rationale and importance of tailored synthetic strategies of three such case studies are presented, which may inspire further related activities and may eventually help exploiting the largely untapped biological potential of complex metabolites in general.
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Affiliation(s)
- Dirk Menche
- Kekulé-Institut für Organische Chemie und BiochemieUniversität BonnGerhard-Domagk-Strasse 153121BonnGermany
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3
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Ricca M, Rizzacasa MA. Chemistry and biology of spiroacetals from myxobacteria. Org Biomol Chem 2021; 19:2871-2890. [PMID: 33683270 DOI: 10.1039/d1ob00026h] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
This review details the isolation, biosynthesis, biological activity and synthesis of spiroacetals from the myxobacterium Sorangium cellulosum. The strategies utilised to access the challenging structures and stereochemistry of these natural products are highlighted.
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Affiliation(s)
- Michael Ricca
- School of Chemistry, The Bio21 Molecular Science and Biotechnology Institute, The University of Melbourne, Victoria 3010, Australia.
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4
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Liu F, Zhong J, Zhou Y, Gao Z, Walsh PJ, Wang X, Ma S, Hou S, Liu S, Wang M, Wang M, Bian Q. Cobalt‐Catalyzed Enantioselective Negishi Cross‐Coupling of Racemic α‐Bromo Esters with Arylzincs. Chemistry 2018; 24:2059-2064. [PMID: 29194860 DOI: 10.1002/chem.201705463] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2017] [Indexed: 12/12/2022]
Affiliation(s)
- Feipeng Liu
- Department of Applied Chemistry China Agricultural University 2 West Yuanmingyuan Road Beijing 100193 P. R. China
| | - Jiangchun Zhong
- Department of Applied Chemistry China Agricultural University 2 West Yuanmingyuan Road Beijing 100193 P. R. China
| | - Yun Zhou
- Department of Applied Chemistry China Agricultural University 2 West Yuanmingyuan Road Beijing 100193 P. R. China
| | - Zidong Gao
- Department of Applied Chemistry China Agricultural University 2 West Yuanmingyuan Road Beijing 100193 P. R. China
| | - Patrick J. Walsh
- Department of Chemistry University of Pennsylvania 231 South 34th Street Philadelphia Pennsylvania 19104-6323 USA
| | - Xueyang Wang
- Department of Applied Chemistry China Agricultural University 2 West Yuanmingyuan Road Beijing 100193 P. R. China
| | - Sijie Ma
- Department of Applied Chemistry China Agricultural University 2 West Yuanmingyuan Road Beijing 100193 P. R. China
| | - Shicong Hou
- Department of Applied Chemistry China Agricultural University 2 West Yuanmingyuan Road Beijing 100193 P. R. China
| | - Shangzhong Liu
- Department of Applied Chemistry China Agricultural University 2 West Yuanmingyuan Road Beijing 100193 P. R. China
| | - Minan Wang
- Department of Applied Chemistry China Agricultural University 2 West Yuanmingyuan Road Beijing 100193 P. R. China
| | - Min Wang
- Department of Applied Chemistry China Agricultural University 2 West Yuanmingyuan Road Beijing 100193 P. R. China
| | - Qinghua Bian
- Department of Applied Chemistry China Agricultural University 2 West Yuanmingyuan Road Beijing 100193 P. R. China
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5
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Botubol-Ares J, Hanson JR, Hernández-Galán R, Collado IG. Mild Epoxidation of Allylic Alcohols Catalyzed by Titanium(III) Complexes: Selectivity and Mechanism. ACS OMEGA 2017; 2:3083-3090. [PMID: 31457640 PMCID: PMC6641598 DOI: 10.1021/acsomega.7b00386] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/31/2017] [Accepted: 06/13/2017] [Indexed: 05/16/2023]
Abstract
A novel methodology for the epoxidation of a broad range of primary, secondary, and tertiary allylic alcohols is described using tert-butyl hydroperoxide as oxidant and Ti(III) species generated by reduction of Ti(IV) complexes, with manganese (0) in 1,4-dioxane under mild reaction conditions. The reaction proceeded with wide substrate scope and high chemo- and diastereoselectivity. A mechanistic pathway for the reaction is also discussed.
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Affiliation(s)
- José
Manuel Botubol-Ares
- Departamento
de Química Orgánica, Facultad de Ciencias, Instituto
de Biomoléculas, Universidad de Cádiz, Campus Universitario Puerto Real
s/n, 11510 Puerto
Real, Cádiz, Spain
| | - James R. Hanson
- Department
of Chemistry, University of Sussex, Brighton, Sussex BN1 9QJ, U.K.
| | - Rosario Hernández-Galán
- Departamento
de Química Orgánica, Facultad de Ciencias, Instituto
de Biomoléculas, Universidad de Cádiz, Campus Universitario Puerto Real
s/n, 11510 Puerto
Real, Cádiz, Spain
| | - Isidro G. Collado
- Departamento
de Química Orgánica, Facultad de Ciencias, Instituto
de Biomoléculas, Universidad de Cádiz, Campus Universitario Puerto Real
s/n, 11510 Puerto
Real, Cádiz, Spain
- E-mail:
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6
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Sengupta S, Kim HJ, Cho KS, Song WY, Sim T. Highly stereoselective synthesis of mupirocin H. Tetrahedron 2017. [DOI: 10.1016/j.tet.2017.01.017] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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7
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Fernandes RA, Halle MB. Total synthesis of unique anti,anti-4-hydroxy-5-(1-hydroxyalkyl)-γ-lactones, polyporolide and mupirocin H. Tetrahedron Lett 2016. [DOI: 10.1016/j.tetlet.2016.07.033] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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8
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Wu L, Zhong JC, Liu SK, Liu FP, Gao ZD, Wang M, Bian QH. Asymmetric synthesis of (R)-ar-curcumene, (R)-4,7-dimethyl-l-tetralone, and their enantiomers via cobalt-catalyzed asymmetric Kumada cross-coupling. ACTA ACUST UNITED AC 2016. [DOI: 10.1016/j.tetasy.2015.11.009] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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9
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10
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Bruns N, Collisi W, Bernecker S, Stadler M, Richter C, Schwalbe H, Kalesse M. Spirangien Derivatives from the MyxobacteriumSorangium cellulosum: Isolation, Structure Elucidation, and Biological Activity. European J Org Chem 2014. [DOI: 10.1002/ejoc.201403353] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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11
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Sengupta S, Sim T. A Concise Synthesis of Mupirocin H Using a Cross-Metathesis-Based Strategy. European J Org Chem 2014. [DOI: 10.1002/ejoc.201402442] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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12
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Newton S, Carter CF, Pearson CM, de C. Alves L, Lange H, Thansandote P, Ley SV. Accelerating Spirocyclic Polyketide Synthesis using Flow Chemistry. Angew Chem Int Ed Engl 2014. [DOI: 10.1002/ange.201402056] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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13
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Newton S, Carter CF, Pearson CM, de C Alves L, Lange H, Thansandote P, Ley SV. Accelerating spirocyclic polyketide synthesis using flow chemistry. Angew Chem Int Ed Engl 2014; 53:4915-20. [PMID: 24729438 DOI: 10.1002/anie.201402056] [Citation(s) in RCA: 106] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2014] [Indexed: 11/10/2022]
Abstract
Over the past decade, the integration of synthetic chemistry with flow processing has resulted in a powerful platform for molecular assembly that is making an impact throughout the chemical community. Herein, we demonstrate the extension of these tools to encompass complex natural product synthesis. We have developed a number of novel flow-through processes for reactions commonly encountered in natural product synthesis programs to achieve the first total synthesis of spirodienal A and the preparation of spirangien A methyl ester. Highlights of the synthetic route include an iridium-catalyzed hydrogenation, iterative Roush crotylations, gold-catalyzed spiroketalization and a late-stage cis-selective reduction.
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Affiliation(s)
- Sean Newton
- Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge, CB2 1EW (UK)
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14
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Lemercier BC, Pierce JG. Synthesis of Thiohydroxamic Acids and Thiohydroximic Acid Derivatives. J Org Chem 2014; 79:2321-30. [DOI: 10.1021/jo500080x] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Bérénice C. Lemercier
- Department of Chemistry, North Carolina State University, Raleigh, North Carolina 27695, United States
| | - Joshua G. Pierce
- Department of Chemistry, North Carolina State University, Raleigh, North Carolina 27695, United States
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15
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Fürst R, Rinner U. Synthesis of an advanced intermediate of the jatrophane diterpene Pl-4: a dibromide coupling approach. J Org Chem 2013; 78:8748-58. [PMID: 23895274 PMCID: PMC3767202 DOI: 10.1021/jo401480t] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The preparation of an advanced intermediate toward the synthesis of the jatrophane diterpene Pl-4 is described. The key step is a regioselective chelation-controlled lithiation of the (Z)-configured bromide in the corresponding vinyl dibromide precursor. The method outlined within this Article is suitable for the facile access of sterically hindered internal vinyl halides for further coupling reactions.
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Affiliation(s)
- Rita Fürst
- Institute of Organic Chemistry, University of Vienna, Währinger Straße 38, 1090 Vienna, Austria
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16
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17
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18
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Lu L, Zhang W, Nam S, Horne DA, Jove R, Carter RG. Amphidinolide B: total synthesis, structural investigation, and biological evaluation. J Org Chem 2013; 78:2213-47. [PMID: 23406192 PMCID: PMC3631602 DOI: 10.1021/jo3026077] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The total syntheses of amphidinolide B1 and the proposed structure of amphidinolide B2 have been accomplished. Key aspects of this work include the development of a practical, non-transition-metal-mediated method for the construction of the C13-C15 diene, the identification of α-chelation and dipole minimization models for diastereoselective methyl ketone aldol reactions, the discovery of a spontaneous Horner-Wadsworth-Emmons macrocyclization strategy, and the development of a novel late stage method for construction of an allylic epoxide moiety. The originally proposed structure for amphidinolide B2 and diastereomers thereof display potent antitumor activities with IC50 values ranging from 3.3 to 94.5 nM against human solid and blood tumor cells. Of the different stereoisomers, the proposed structure of amphidinolide B2 is over 12-fold more potent than the C8,9-epimer and C18-epimer in human DU145 prostate cancer cells. These data suggest that the epoxide stereochemistry is a significant factor for anticancer activity.
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Affiliation(s)
- Liang Lu
- Department of Chemistry, Oregon State University, Corvallis, OR 97331
| | - Wei Zhang
- Department of Chemistry, Oregon State University, Corvallis, OR 97331
| | - Sangkil Nam
- Department of Molecular Medicine, Beckman Research Institute, City of Hope, Duarte, CA 91010, USA
| | - David A. Horne
- Department of Molecular Medicine, Beckman Research Institute, City of Hope, Duarte, CA 91010, USA
| | - Richard Jove
- Department of Molecular Medicine, Beckman Research Institute, City of Hope, Duarte, CA 91010, USA
| | - Rich G. Carter
- Department of Chemistry, Oregon State University, Corvallis, OR 97331
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19
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Gregg C, Gunawan C, Ng AWY, Wimala S, Wickremasinghe S, Rizzacasa MA. Formal Total Synthesis of Spirangien A. Org Lett 2013; 15:516-9. [DOI: 10.1021/ol3033253] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Claire Gregg
- School of Chemistry, The Bio21 Institute, The University of Melbourne, Victoria 3010, Australia
| | - Christian Gunawan
- School of Chemistry, The Bio21 Institute, The University of Melbourne, Victoria 3010, Australia
| | - Audrey Wai Yi Ng
- School of Chemistry, The Bio21 Institute, The University of Melbourne, Victoria 3010, Australia
| | - Samantha Wimala
- School of Chemistry, The Bio21 Institute, The University of Melbourne, Victoria 3010, Australia
| | - Sonali Wickremasinghe
- School of Chemistry, The Bio21 Institute, The University of Melbourne, Victoria 3010, Australia
| | - Mark A. Rizzacasa
- School of Chemistry, The Bio21 Institute, The University of Melbourne, Victoria 3010, Australia
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20
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21
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Pellicena M, Solsona JG, Romea P, Urpí F. Stereoselective titanium-mediated aldol reactions of α-benzyloxy methyl ketones. Tetrahedron 2012. [DOI: 10.1016/j.tet.2012.09.096] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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22
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Höfle G, Gerth K, Reichenbach H, Kunze B, Sasse F, Forche E, Prusov EV. Isolation, biological activity evaluation, structure elucidation, and total synthesis of eliamid: a novel complex I inhibitor. Chemistry 2012; 18:11362-70. [PMID: 22890974 DOI: 10.1002/chem.201201879] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2012] [Indexed: 11/06/2022]
Abstract
Eliamid is a secondary metabolite isolated from two bacterial strains. This molecule features a linear polyketide backbone terminated by a tetramic acid amide moiety. Among other biological activities, eliamid shows a high and specific cytostatic action on human lymphoma and cervix carcinoma cell lines. The 2,4-anti relative configuration of the C-2,C-4-dimethyl substituted amide fragment was assigned by means of Breit's rule. The absolute configuration of all stereocenters was determined by a combination of degradation methods, structural similarity analysis and total synthesis. The stereogenic centers were introduced by vinylogous Mukaiyama aldol reaction and two consecutive Myers alkylations. The use of pentafluorophenyl ester as acylation agent allowed the efficient formation of tetramic acid amide. The longest linear sequence in the synthesis consist of 13 steps and proceeds with 12% overall yield. Differential spectroscopy experiments with beef heart submitochondrial particles established that eliamid is a potent inhibitor of the NADH-ubiquinone oxidoreductase complex. Additionally, biosynthesis of eliamid was investigated by feeding experiments with (13)C-labeled precursors.
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Affiliation(s)
- Gerhard Höfle
- Helmholtz-Zentrum für Infektionsforschung, Inhoffenstr. 7, Braunschweig, Germany
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23
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Affiliation(s)
- Olaf Hartmann
- Institut für Organische Chemie and Centre of Biomolecular Drug Research (BMWZ), Leibniz Universität Hannover, Schneiderberg 1B, 30167 Hannover, Germany
| | - Markus Kalesse
- Institut für Organische Chemie and Centre of Biomolecular Drug Research (BMWZ), Leibniz Universität Hannover, Schneiderberg 1B, 30167 Hannover, Germany
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24
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Braun MG, Quiclet-Sire B, Zard SZ. A highly stereoselective, modular route to (E)-vinylsulfones and to (Z)- and (E)-alkenes. J Am Chem Soc 2011; 133:15954-7. [PMID: 21923183 DOI: 10.1021/ja207944c] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
A recently discovered radical fragmentation of 2-fluoro-6-pyridinoxy derivatives allows a new highly stereoselective and convergent route to (E)-vinylsulfones from allylic alcohols. Reductive desulfonylation or nickel-catalyzed couplings furnish di- and trisubstituted (E)- and (Z)-alkenes.
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Affiliation(s)
- Marie-Gabrielle Braun
- Laboratoire de Synthèse Organique, CNRS UMR 7652, Ecole Polytechnique, 91128 Palaiseau, France
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25
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Guérinot A, Lepesqueux G, Sablé S, Reymond S, Cossy J. Synthetic Efforts toward the Spiroketal Core of Spirangien A. J Org Chem 2010; 75:5151-63. [DOI: 10.1021/jo100871m] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Amandine Guérinot
- Laboratoire de Chimie Organique, ESPCI ParisTech, UMR CNRS 7084, 10 rue Vauquelin, 75231 Paris Cedex 05, France
| | - Guillaume Lepesqueux
- Laboratoire de Chimie Organique, ESPCI ParisTech, UMR CNRS 7084, 10 rue Vauquelin, 75231 Paris Cedex 05, France
| | - Serge Sablé
- Sanofi-Aventis, Centre de recherche de Vitry-Alfortville, 9 Quai Jules Guesde, 94400 Vitry sur Seine, France
| | - Sébastien Reymond
- Laboratoire de Chimie Organique, ESPCI ParisTech, UMR CNRS 7084, 10 rue Vauquelin, 75231 Paris Cedex 05, France
| | - Janine Cossy
- Laboratoire de Chimie Organique, ESPCI ParisTech, UMR CNRS 7084, 10 rue Vauquelin, 75231 Paris Cedex 05, France
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26
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Paterson I, Findlay AD, Noti C. Total synthesis of (-)-spirangien A, an antimitotic polyketide isolated from the myxobacterium Sorangium cellulosum. Chem Asian J 2009; 4:594-611. [PMID: 19173216 DOI: 10.1002/asia.200800445] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
An expedient first total synthesis of (-)-spirangien A, a potent cytotoxic and antifungal polyketide of myxobacterial origin, is described. By using a common 1,3-diol intermediate obtained by an efficient aldol-reduction sequence for installation of the C15-C18 and C25-C28 stereotetrads and a reagent-controlled boron aldol coupling followed by spiroacetalization, a highly convergent strategy was developed for construction of the elaborate spiroacetal core. Conversion of this advanced spiroacetal intermediate into (+)-spirangien diene, obtained previously by controlled degradation of spirangien A, was then achieved by installation of the truncated side-chain using an allylboration-Peterson sequence. The total synthesis of (-)-spirangien A was then achieved by the controlled attachment of the unsaturated C1-C12 side-chain, avoiding exposure to light. A Stork-Wittig olefination and double Stille cross-coupling sequence was exploited to install the delicate conjugated pentaene chromophore featuring alternating (Z)- and (E)-olefins, leading initially to the methyl ester of spirangien A, which proved significantly more stable than the corresponding free acid. Subsequent careful hydrolysis afforded (-)-spirangien A, validating the relative and absolute configuration.
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Affiliation(s)
- Ian Paterson
- University Chemical Laboratory, Lensfield Road, Cambridge, CB2 1EW, UK.
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27
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Paterson I, Findlay AD, Noti C. Total synthesis of (−)-spirangien A and its methyl ester. Chem Commun (Camb) 2008:6408-10. [DOI: 10.1039/b816229h] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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