Triterpene glycosides of Hedera canariensis IV. Structures of glycosides L-F-3, L-G(0), and L-G(1a) from the leaves of Algerian ivy

Three minor partially acetylated glycosides have been isolated from the lea ves of Algerian ivy, Hedera canariensis Willd. (Araliaceae) - the previousl y known {3-O-[alpha-L-rhamnopyranosyl-(1-->2)-O-alpha-L-arabinopyranoside] 28-O-[alpha-L-rhamnopyranosyl-(1-->4)-O-(6-acetyl-beta-D-glucopyranosyl)-(1 -->6)-O-beta-D-glucopyranoside}s of oleanolic acid and of hederagenin (ciwu jianoside C-4 and kizuta saponin K-11) and the new 3-O-[alpha-L-rhamnoprano syl-(1-->2)-alpha-O-L-arabinopyranoside] 28-O-[alpha-L-rhamnopyranosyl-(1-- >4)-O-(6-O-acetyl-beta-D-glucopyranosyl)-(1-->6)-O-beta-D-glucopyranoside o f echinocystic acid (glycoside L-G(0)). The structures of the glycosides is olated have been established on the basis of chemical transformations and H -1 and C-13 NMR spectroscopy.