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.
Cicloastragenol Glycosides from Astragalus Verrucosus / L.Pistelli, S.Pardossi, A.Bertoli, D.Potenza. - In: PHYTOCHEMISTRY. - ISSN 0031-9422. - 49:8(1998), pp. 2467-2471.
Cicloastragenol Glycosides from Astragalus Verrucosus
D.PotenzaUltimo
1998
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.
Pubblicazioni consigliate
I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
