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An Unusual Cationic [2 + 2] Cycloaddition in a Divergent Total Synthesis of Hongoquercin A and Rhododaurichromanic Acid A
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    An Unusual Cationic [2 + 2] Cycloaddition in a Divergent Total Synthesis of Hongoquercin A and Rhododaurichromanic Acid A
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    Division of Pharmaceutical Sciences and Department of Chemistry, University of Wisconsin, Madison, Wisconsin 53705
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    Journal of the American Chemical Society

    Cite this: J. Am. Chem. Soc. 2006, 128, 19, 6272–6273
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    https://doi.org/10.1021/ja054872i
    Published April 26, 2006
    Copyright © 2006 American Chemical Society

    Abstract

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    An unusual polyene cyclization pathway that led to a divergent total synthesis of hongoquercin A and rhododaurichromanic acid A is described here. This work uncovered a unique cationic cyclobutane formation that could be relevant to the biosynthetic pathway for the formation of cyclobutane containing terpenoids in addition to rhododaurichromanic acids.

    Copyright © 2006 American Chemical Society

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    Experimental procedures, NMR spectra and characterizations for all new compounds, and X-ray data (CIF, PDF). This material is available free of charge via the Internet at http://pubs.acs.org.

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    Journal of the American Chemical Society

    Cite this: J. Am. Chem. Soc. 2006, 128, 19, 6272–6273
    Click to copy citationCitation copied!
    https://doi.org/10.1021/ja054872i
    Published April 26, 2006
    Copyright © 2006 American Chemical Society

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