title: Flavone-coumarin hybrids from Gnidia socotrana.
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.
authors.affiliation: Leibniz-Institut für Pflanzenbiochemie, Abteilung Natur- und Wirkstoffchemie, 3, D-06120 Halle/S., Weinberg, Germany.
authors.forename: Katrin
authors.initials: K
authors.lastname: Franke
authors.forename: Andrea
authors.initials: A
authors.lastname: Porzel
authors.forename: Jürgen
authors.initials: J
authors.lastname: Schmidt
mesh_terms: D003374:Coumarins / Q000737:chemistry*; D005419:Flavonoids / Q000737:chemistry*; D019906:Nuclear Magnetic Resonance, Biomolecular; D018515:Plant Leaves / Q000737:chemistry; D018520:Plant Shoots / Q000737:chemistry; D021241:Spectrometry, Mass, Electrospray Ionization; D029645:Thymelaeaceae / Q000737:chemistry* / Q000145:classification
chemical_list: D003374:Coumarins; D005419:Flavonoids