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Triterpene saponins from the roots of Ampelozizyphus amazonicus
M G Brandao1, M A Lacaille-Dubois, M A Teixera
1Laboratorio de Farmacognosia, Faculdade de Farmacia, Universidade Federal de Minas Gerais, Belo-Horizonte, Brasil.
Phytochemistry
|January 1, 1992
Abstract:
A new triterpene saponin was isolated from the roots of Ampelozizyphus amazonicus together with the known 3-O-beta-D-glucopyranosyl-20-O-alpha-L-rhamnopyranosyljujubogenin and the known triterpenes melaleucic acid, 3 beta,27 alpha-dihydroxylup-20(29)-en-28 beta-oic acid, betulinic acid, betulin, lupeol. The structure of this saponin was elucidated as 3-O-[beta-D-glucopyranosyl(1----2)alpha-L-arabinopyranosyl]- 20-O-alpha-L-rhamnopyranosyljujubogenin by spectral analysis and chemical transformations.