TRITERPENE GLYCOSIDES FROM Astragalus AND THEIR GENINS. LXXXVIII. CYCLOASCIDOSIDE A, A NEW BISDESMOSIDE OF CYCLOASGENIN C

The aerial part of Astragalus mucidus Bunge (Leguminosae) contains several isoprenoid compounds, two of which were isolated pure. The structure of a new triterpene glycoside of the cycloartane series, cycloascidoside A, was determined as 24R-cycloartan-3 beta,6 alpha,16 beta,24,25-pentaol-3-O-beta-D-xylopyranoside-6-O-beta-D-glucopyranoside. D-3-O-Methyl-chiro-inositol was also identified.