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A triterpenoid saponin from Maesa ramentacea
P Tuntiwachwuttikul1, O Pancharoen, W Mahabusarakam
1Department of Chemistry, Faculty of Science, Silpakorn University, Nakorn Pathom, Thailand.
Phytochemistry
|February 1, 1997
Abstract:
The structure of a piscicidal triterpenoid saponin (saponin A) isolated from the leaves of Maesa ramentacea has been shown to be 3-O-[[(alpha-rhamnopyranosyl (1-->2)-alpha-L-rhamnopyranosyl(1-->2)-beta-D-galactopyranosyl (1-->3)]-[beta-D-glucopyranosyl(1-->2)]-beta-D-glucuronopyranosyl] barringtogenol C21, 22-O-diangeloate. Extensive use was made of homo- and heteronuclear 2D NMR techniques.