Flavonoids and terpenoids from the resinous exudates of Madia species (Asteraceae, Helenieae).
The resinous material accumulated on aerial parts of Madia species is shown to consist mainly of diterpenes, containing a series of flavonoid aglycones. A6- and/or 8-O-substitution is characteristic for many of these flavonoids. Three known rare diterpenes were found and the structure elucidation of a diterpene with a new carbon skeleton, named madiaol, is reported.
Wollenweber
Eckhard
E
Institut für Botanik der Technischen Universität, Schnittspahnstrasse 3, D-64287 Darmstadt, Germany. Wollenweber@bio.tu-darmstadt.de
Dörr
Marion
M
Dörsam
Marco
M
Hassan
Abu El-Hamed
Ael-H
Ahmed
Ahmed A
AA
Hegazy
M F
MF
Zeller
Klaus-Peter
KP
D019659:Asteraceae / Q000737:chemistry*; D005419:Flavonoids / Q000737:chemistry* / Q000302:isolation & purification; D008968:Molecular Conformation; D015394:Molecular Structure; D010936:Plant Extracts / Q000737:chemistry* / Q000302:isolation & purification; D012116:Resins, Plant / Q000737:chemistry* / Q000302:isolation & purification; D013729:Terpenes / Q000737:chemistry* / Q000302:isolation & purification
D005419:Flavonoids; D010936:Plant Extracts; D012116:Resins, Plant; D013729:Terpenes