Heavenly blue anthocyanin II -4-0-(6-0-(-3-0-(β -d-glucopyranosyl)caffeyl)-β-d-glucopyranosyl)- caffeic acid, a novel component in heavenly blue anthocyanin
Olinioside, 5-(4′-O-β-d-glucopyranosyl)-caffeoyloxy-5,6- dihydro-4-methyl-(2H)-pyran-2-one from Olinia usambarensis
摘要:
From an extract of root bark of Olinia usambarensis, which showed antifeedant activity, 5-(4'-O-beta-D-glucopyranosyl)-caffeoyloxy-5,6-dihydro-4-methyl-(2H)-pyran-2-one, named olinioside, caffeic acid, and 4-0-beta-D-glucopyranosylcaffeic acid were isolated. The structure of olinioside was assigned by chemical and spectroscopic methods.