Diastereomeric Resolution of a Racemic Biarylboronic Acid and Its Application to Divergent Asymmetric Total Syntheses of Some Axially Chiral Natural Products

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    Abstract

    The asymmetric total syntheses of deshydroxytetramethylcupressuflavone and desmethylkotanin and the synthesis of a key intermediate in the previous synthesis of hibarimicinone are described using an axially chiral biarylboronic acid, prepared by the diastereomeric resolution of the corresponding rac-boronic acid, as a common intermediate. Conversion of the boronic acid moiety into either a hydrogen atom or a hydroxy group by protodeboronation or oxidation enabled us to complete the total syntheses of deshydroxytetramethylcupressuflavone and desmethylkotanin and synthesis of a key intermediate in the previous total synthesis of hibarimicinone, respectively.

    Original languageEnglish
    Pages (from-to)549-554
    Number of pages6
    JournalAdvanced Synthesis and Catalysis
    Volume358
    Issue number4
    DOIs
    Publication statusPublished - 2016 Feb 18

    Bibliographical note

    Funding Information:
    This work was supported by grants from the National Research Foundation of Korea (NRF) funded by the Korean Government (NRF-2013R1A1A1008434 and NRF- 2015R1D1A1A01057200). We are also thankful for an NRF grant (NRF-2014-011165, Center for New Directions in Organic Synthesis). Finally, C.-H.C. thanks the Posco TJ Park Foundation for their generous support.

    Publisher Copyright:
    © 2016 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

    Keywords

    • MIDA boronates
    • axially chiral natural products
    • boronic acids
    • diastereomeric resolution
    • total synthesis

    ASJC Scopus subject areas

    • Catalysis
    • Organic Chemistry

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