Flavonoids from Aconitum napellus subsp neomontanum

Three flavonol glycosides quercetin 7-O-(6-trans-caffeoyl)-beta -glucopyran osyl-(1 -->3)-alpha -rhamnopyranoside-3-O-beta -glucopyranoside (1), kaempf erol 7-O-(6-trans-caffeoyl)-beta -glucopyranosyl-(1 -->3)-alpha -rhamnopyra noside-3-O-beta -glucopyranoside (2), and kaempferol 7-O-(6-trans-p-coumaro yl)-beta -glucopyranosyl-(1 -->3)-alpha -rhamnopyranoside-3-O-beta -glucopy ranoside (3), together with the known beta -3,4-dihydroxyphenethyl beta -gl ucopyranoside, were isolated from the flowers of Aconitum napellus subsp. n eomonthanum. Their structures were elucidated bq spectroscopic methods, inc luding 2D NMR Spectral techniques. (C) 2001 Elsevier Science Ltd. All right s reserved.