Three new cycloartane-triterpene glycosides, astraverrucin IV, V and VI, were isolated from the aerial parts of Astragalus verrucosus. Based on spectroscopic analysis (IR, 1D and 2D-NMR, FABMS), the structures of the saponins were established to be cycloastragenol 3-O-[α-L-rhamnopyranosyl(1 → 4)-β-D-glucopyranoside], cycloastragenol 3-0-[α-L-rhamnopyranosyl(1 → 4)]-β-D-(3-O-acetyl)glucopyranoside and cycloastragenol 3-O-[α-L- rhamnopyranosyl (1 → 4)]-β-D-(6-O-acetyl)-glucopyranoside. D-pinitol and astraverrucin I were also obtained.
Cycloastragenol glucosides from Astragalus Verrucosus
PISTELLI, LUISA;BERTOLI, ALESSANDRA;
1998-01-01
Abstract
Three new cycloartane-triterpene glycosides, astraverrucin IV, V and VI, were isolated from the aerial parts of Astragalus verrucosus. Based on spectroscopic analysis (IR, 1D and 2D-NMR, FABMS), the structures of the saponins were established to be cycloastragenol 3-O-[α-L-rhamnopyranosyl(1 → 4)-β-D-glucopyranoside], cycloastragenol 3-0-[α-L-rhamnopyranosyl(1 → 4)]-β-D-(3-O-acetyl)glucopyranoside and cycloastragenol 3-O-[α-L- rhamnopyranosyl (1 → 4)]-β-D-(6-O-acetyl)-glucopyranoside. D-pinitol and astraverrucin I were also obtained.File in questo prodotto:
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