title: A galloylated cyanogenic glycoside from the Australian endemic rainforest tree Elaeocarpus sericopetalus (Elaeocarpaceae).
abstract: A cyanogenic glycoside - 6'-O-galloylsambunigrin - has been isolated from the foliage of the Australian tropical rainforest tree species Elaeocarpus sericopetalus F. Muell. (Elaeocarpaceae). This is the first formal characterisation of a cyanogenic constituent in the Elaeocarpaceae family, and only the second in the order Malvales. 6'-O-galloylsambunigrin was identified as the principal glycoside, accounting for 91% of total cyanogen in a leaf methanol extract. Preliminary analyses indicated that the remaining cyanogen content may comprise small quantities of sambunigrin, as well as di- and tri-gallates of sambunigrin. E. sericopetalus was found to have foliar concentrations of cyanogenic glycosides among the highest reported for tree leaves, up to 5.2 mg CN g(-1) dry wt.
authors.affiliation: School of Botany, The University of Melbourne, Vic. 3010, Australia. rem@unimelb.edu.au
authors.forename: Rebecca E
authors.initials: RE
authors.lastname: Miller
authors.forename: Michael
authors.initials: M
authors.lastname: Stewart
authors.forename: Robert J
authors.initials: RJ
authors.lastname: Capon
authors.forename: Ian E
authors.initials: IE
authors.lastname: Woodrow
mesh_terms: D001315:Australia; D002851:Chromatography, High Pressure Liquid; D045467:Elaeocarpaceae / Q000737:chemistry*; D006027:Glycosides / Q000737:chemistry* / Q000302:isolation & purification; D009682:Magnetic Resonance Spectroscopy; D015394:Molecular Structure; D014329:Tropical Climate
chemical_list: D006027:Glycosides; C007173:cyanogenic glycosides