Cyanogenic Glycosides and 4-Hydroxycoumarin Glycosides from Gerbera jamesonii hybrida

Abstract

A new 4-hydroxycoumarin glycoside (V), named 5-methyl-4-rutinosyloxycoumarin, C22H28012 mp 240—241 °C (dec.), [a]D2 —79.4° (pyridine), was isolated from the underground parts of Gerbera jamesonii hybrida (Compositae), in addition to three cyanogenic glycosides (prunasin (I), amygdalin (II) and vicianin (III)) and a coumarin glycoside (4-/?-D-glucopyranosylo-xy-5-methylcoumarin (IV)). The chemical structure of V was determined to be 5-methyl-4-[a-L-rhamnopyranopyranosyl-(l-*6)-/?-D-glucopyranosyloxy]coumarin on the basis of chemical and spectral evidence. © 1985, The Pharmaceutical Society of Japan. All rights reserved.