Aurantosides G, H, and I: Three new tetramic acid glycosides from a Papua New Guinea Theonella swinhoei.
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Aurantosides G-I (I-III) have been isolated from the lithistid sponge Theonella swinhoei from Papua New Guinea. Their structures were established by spectroscopic and chem. methods. Compds. I-III represent new monochloropentaenoyl tetramic acids with mono-, di-, and tri-N-saccharide substituents, resp. Aurantosides G-I (I-III) failed to show any significant cytotoxicity against the human colon tumor cell line HCT-116.
Journal of Natural Products
© 2005 American Chemical Society. Self-archiving of the author-manuscript version is not yet supported by this publisher.