Chemical investigation of the leaves and the flowers of Rhododendron f
errugineum afforded six known flavonoids: hyperoside, myricetin 3-O-be
ta-galactopyranoside, kaempferol 3-O-(6 ''-O-acetyl)-glucoside, querce
tin 3-O-(6 ''-O-acetyl)-glucoside, quercetin 3-O-(6 ''-O-acetyl)-galac
toside, quercetin 3-O-(3 '',6 ''-O-diacetyl)-galactoside and two new d
ihydroflavonol glycosides: trans-taxifolin 3-O-alpha-arabinopyranoside
and cis-taxifolin 3-O-alpha-arabinopyranoside. (C) 1998 Elsevier Scie
nce Ltd. All rights reserved.