Two New Ellagic Acid Glycosides from Leaves of Diplopanax Stachyanthus
Two new ellagic acid glycosides, named stachyanthuside A ( 1 ) and B ( 6 ), have been isolated along with four known ellagic compounds ( 2 - 5 ) from the leaves of Diplopanax stachyanthus . The structures of the new compounds were established as 3′- O -methylellagic acid 4- O -- d -glucopyranoside ( 1 ) and 3,3′,4′-tri- O -methylellagic acid 4- O -- d -(2″-acetyl)-glucopyranoside ( 6 ) on the basis of detailed spectroscopic analysis and comparison with related model compounds.
Keywords: Diplopanax stachyanthus; Ellagic acid glycosides; Stachyanthuside A; Stachyanthuside B
Document Type: Research Article
Publication date: 01 December 2004
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