|Wollenweber, Eckhard - TECH UNIV, DARMSTADT, GER|
|Roitman, James - RETIRED, ARS, WRRC|
Submitted to: Natural Product Communications
Publication Type: Peer Reviewed Journal
Publication Acceptance Date: June 28, 2008
Publication Date: October 30, 2007
Citation: Wollenweber, E., Roitman, J.N. 2007. New Reports on Surface Flavonoids from Chamaebatiaria (Rosaceae), Dodonaea (Sapindaceae), Elsholtzia (Lamiaceae) and Silphium (Asteraceae). Natural Product Communications.0:1-5. Interpretive Summary: Numerous plants produce a sticky resin on their leaf surfaces. The resin from a number of species belonging to four different plant families was collected and pigmented substances (flavones) were isolted and analyzed. Some of these substances were very rare and are useful as markers of plant evolutionary development.
Technical Abstract: Lipophilic exudates of one species each of Chamaebatiara and Elsholtzia, two species of Silphium and four Dodonaea species were analyzed for flavonoid aglycones. In addition to a number of well-known and widely distributed flavonoids, several very rare and one novel natural flavonol were isolated and identified. 1 H and 13 C NMR data of four flavonones and two flavones are reported.