| Abstract: | A new triterpene glycoside of the cycloartane series (cycloaraloside C) has been isolated from the roots of the plantAstragalus amarus Pall. (Leguminosae). Cycloaraloside C is a bioside of cyclosieversigenin including one D-glucose residue and one D-apiose
residue. The structure of the glycoside has been shown on the basis of the chemical transformations and spectral characteristics
as 20R,24S-epoxycycloartane-3β,6α,16β,25-tetraol 3-O-O-(D-apio-β-D-furanosyl)-(1 → 2)-β-D-glucopyranoside]. This is the first
time that D-apiose has been found among cycloartane glycosides.
Institute of Chemistry of Plant Substances, Academy of Sciences of the Uzbek, Tashkent. Translated from Khimiya Prirodnykh
Soedinenii, No. 6, pp. 783–787, November–December, 1990. |
