Chemical diversity of <i>Sarcophyton</i> soft corals in Okinawa

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  • Tanaka Junichi
    Department of Chemistry Biology, and Marine Science, University of the Ryukyus
  • Yoshida Takumi
    Department of Chemistry Biology, and Marine Science, University of the Ryukyus
  • Benayahu Yehuda
    Department of Zoology Tel Aviv University

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  • <i>Sarcophyton</i> 属ソフトコーラルの含有成分の多様性
  • Chemical diversity of Sarcophyton soft corals in Okinawa

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A total of 279 specimens belonging to nine species of soft corals of the genus Sarcophyton were subjected to chemical study for the diversity of cembrane diterpenes. Following morphological identification, each specimen was examined for metabolites using gradient HPLC, NMR, and other tools. The S. glaucum and S. cinereum species complex was found to be the most abundant and to contain the most diverse metabolites in the Ryukyu Archipelago, Japan. S. trocheliophorum and S. ehrenbergi were moderately abundant and diverse in metabolites, while other all species seemed to be scarce and restricted in metabolites. During this research we encountered two new compounds (7, 12), whose structures are described in this report.

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