Triterpene glycosides of the leaves of Eleutherococcus senticosus II. Structure of eleutherosides I, K, L, and M
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The complete structures of eleutherosides I, K, L, and M have been established. Glycoside I is identical with mubenin B and glycoside M with hederasaponin B. It has been shown that eleutheroside K is the 3-[O-α-L-rhamnopyranosyl-(1»2)-α-L-arabopyranoside] of oleanolic acid. In eleutheroside L, the L-rhamnose and L-arabinose residues are connected by a 1»4 bond, and a trisaccharide consisting of O-α-L-rhamnopyranosyl-(1»4)-O-β-D-glucopyranosyl-(1»6)-β-D-glucopyranose is connected with the carboxy group.
KeywordsOleanolic Acid Methyl Iodide DMFA Silver Oxide Methyl Ethyl Ketone
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