TRITERPENE SAPONOINS FROM ASTER YUNNANENSIS

Article abstract of DOI:10.1016/0031-9422(94)00794-T

Four new triterpene saponins, asteryunnanosides A, B, C and D, have been isolated from Aster yunnanensis and their structures deduced as 2α,3β,23-trihydroxyolean-12-en-28-oic acid-28-O-α-L-rhamnopyranosyl-(1->2)-β-D-glucopyranoside, 2α,3β,23-trihydroxyolean-12-en-28-oic acid-28-O-β-D-glucopyranosyl-(1->2)-β-D-glucopyranoside, 2α,3β-dihydroxyolean-12-en-28-oic acid-28-O-α-L-rhamnopyranoside-(1->2)-β-D-glucopyranoside and 2α,3β-dihydroxyolean-12-en-28-oic acid-28-O-β-D-glucopyranosyl-(1->2)-β-D-glucopyranoside, respectively, by means of spectral and chemical data. - Key words: Aster yunnanesis; Compositae; triterpene saponins; asteryunnanosides A, B, C, D; arjunolic acid; maslinic acid.