Stereochemical analysis and cytotoxicity of kulokekahilide-2 and its analogues

Masahiro Umehara, Takayuki Negishi, Yukie Maehara, Youichi Nakao, Junji Kimura

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    3 Citations (Scopus)


    We report the conformational analysis of kulokekahilide-2, a cytotoxic cyclic depsipeptide, and its analogues. We also evaluated their cytotoxicity against human cancer cells. Although both the cis and trans conformations are possible for the amide bond between MePhe and MeGly, only one conformation was observed in DMSO. We also reveal that the configuration at C-43 in kulokekahilide-2 controls intramolecular ester exchange between the 26- and 24-membered cyclic depsipeptides. Kulokekahilide-2 and its analogues were evaluated for their cell-growth inhibition profile and using COMPARE analysis, which suggested a mechanism of action different from that of standard anticancer drugs.

    Original languageEnglish
    Pages (from-to)3045-3053
    Number of pages9
    Issue number14
    Publication statusPublished - 2013 Apr 8



    • Cytotoxic evaluation
    • Intramolecular ester exchange
    • Kulokekahilide-2
    • Stereochemical analysis

    ASJC Scopus subject areas

    • Biochemistry
    • Organic Chemistry
    • Drug Discovery

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