Extraction of Acacia myrtifolia has yielded quercitrin and three triterpene
glycosides, named myrtifoliosides A, B, and C. Myrtifolioside A, a minor
crystalline component, gave erythrodiol and L-arabinose and D-glucose on
hydrolysis. Myrtifolioside B (7), C48H80O17,H2O,
the major crystalline glycoside, formed erythrodiol, D- glucose, and
D-galactose on hydrolysis. Hydrolysis of the methyl ester of the amorphous
myrtifolioside C gave methyl oleanolate, D-glucose, and D-galactose. The three
glycosides were readily separated on silica gel by elution with a solvent
containing sodium acetate.