The cyanogenic glucoside-related compound prunasinamide, (2R)-beta-d-glucopyranosyloxyacetamide, has been detected in dried, but not in fresh leaves of the prunasin-containing species Olinia ventosa, Prunus laurocerasus, Pteridium aquilinium and Holocalyx balansae. Experiments with leaves of O.
The flavone glycoside isolated from the leaves of Holocalyx glaziovii Taub. (syn. Holocalyx balansae Mich.) gave on hydrolysis kaempferol and rhamnose. The glycoside was identified by chemical, spectroscopic and chromatographic methods as kaempferol-3,7-dirhamnoside (kaempferitrin).