Chemical Synthesis of the GHIJK Ring System and Further Experimental Support for the Originally Assigned Structure of Maitotoxin

Authors

  • K. C. Nicolaou Prof. Dr.,

    1. Department of Chemistry and The Skaggs Institute for Chemical Biology, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, CA 92037, USA, Fax: (+1) 858-784-2469
    2. Department of Chemistry and Biochemistry, University of California, San Diego, 9500 Gilman Drive, La Jolla, CA 92037, USA
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  • Kevin P. Cole Dr.,

    1. Department of Chemistry and The Skaggs Institute for Chemical Biology, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, CA 92037, USA, Fax: (+1) 858-784-2469
    2. Department of Chemistry and Biochemistry, University of California, San Diego, 9500 Gilman Drive, La Jolla, CA 92037, USA
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  • Michael O. Frederick,

    1. Department of Chemistry and The Skaggs Institute for Chemical Biology, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, CA 92037, USA, Fax: (+1) 858-784-2469
    2. Department of Chemistry and Biochemistry, University of California, San Diego, 9500 Gilman Drive, La Jolla, CA 92037, USA
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  • Robert J. Aversa,

    1. Department of Chemistry and The Skaggs Institute for Chemical Biology, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, CA 92037, USA, Fax: (+1) 858-784-2469
    2. Department of Chemistry and Biochemistry, University of California, San Diego, 9500 Gilman Drive, La Jolla, CA 92037, USA
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  • Ross M. Denton Dr.

    1. Department of Chemistry and The Skaggs Institute for Chemical Biology, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, CA 92037, USA, Fax: (+1) 858-784-2469
    2. Department of Chemistry and Biochemistry, University of California, San Diego, 9500 Gilman Drive, La Jolla, CA 92037, USA
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  • We thank Dr. D. H. Huang and Dr. G. Siuzdak for NMR spectroscopic and mass spectrometric assistance, respectively. Financial support for this work was provided by the National Institutes of Health (USA) and the Skaggs Institute of Chemical Biology, as well as fellowships from the National Science Foundation (predoctoral to M.O.F.) and the National Institutes of Health (USA) (postdoctoral to K.P.C.)

Abstract

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Accepting the proposal: The originally proposed structure of maitotoxin has recently come under scrutiny based on biosynthetic and computational considerations. A newly synthesized ring framework corresponding to the GHIJK ring domain (see structure) of the molecule provided, through 13C NMR spectroscopic comparisons, strong experimental support for the originally proposed structure.

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