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Flavone-coumarin hybrids from Gnidia socotrana
Katrin Franke1, Andrea Porzel, Jürgen Schmidt
1Leibniz-Institut für Pflanzenbiochemie, Abteilung Natur- und Wirkstoffchemie, 3, D-06120 Halle/S., Weinberg, Germany.
Phytochemistry
|November 28, 2002
Abstract:
Phytochemical investigation of leaves and twigs of Gnidia socotrana (Balf. f.) Gilg (Thymelaeaceae), a plant occurring endemically on Socotra Island (Yemen), afforded six novel natural products: two compounds consisting of a flavone and a coumarin moiety connected by a C-C linkage, 7,7'-dihydroxy-3,8'-biscoumarin and three substances with the rare spiro-bis-gamma-lactone structure. The structures were elucidated on the basis of their spectroscopic data.