SYRINGETIN 3-O-(6''-ACETYL)-BETA-GLUCOPYRANOSIDE AND OTHER FLAVONOLS FROM NEEDLES OF NORWAY SPRUCE, PICEA-ABIES

The novel flavonol, syringetin 3-O-(6''-acetyl)-beta-glucopyranoside, has been isolated from needles of Norway spruce (Picea abies) together with the 3-O-(6''-acetyl)-beta-glucopyranosides of isorhamnetin and k aempferol, the -(6''-alpha-rhamnopyranosyl)-beta-glucopyranosides of l aricitrin, isorhamnetin, myricetin, quercetin and kaempferol and the 3 -O-beta-glucopyranosides of laricitrin, isorhamnetin, myricetin, querc etin and kaempferol. Most of the flavonols :have been isolated for the first time from Norway spruce. Kaempferol 3-O-(6''-acetyl)-beta-gluco pyranoside has previously been isolated from Senecio aureus, but witho ut determination of the binding site of the acetyl group. Structure de termination of the flavonols was achieved from TLC, H-1 NMR and UV shi ft reagent data, and, in most cases,C-13 NMR and MS.