Furostanol saponins from Yucca gloriosa L. rhizomes

Saponins in aerial parts of Helleborus viridis L.

“…The 13 C NMR spectrum displayed signals ascribable to a hemiacetal function at d 113.6, two secondary alcoholic functions at d 75.6 and 82.3, and one primary alcoholic function at d 75.9, suggesting the occurrence of a glycosidic furostanol skeleton. On the basis of the HSQC and HMBC correlations, the aglycon moiety of compound 1 was identified as (25R)-5b-furostan-3b,22a,26-triol (Skhirtladze et al, 2006). The configuration of the hydroxyl group at C-22 was established to be a from ROESY correlations between H-20 (d 2.20) and the protons H-23a (d 1.83) and H-23b (d 1.65).…”

Steroidal saponins from Yucca gloriosa L. rhizomes: LC–MS profiling, isolation and quantitative determination

“…Y. gloriosa produces a strong underground system, whose main part is represented by rhizomes. In the rhizomes, biosynthesis of 5b steroids occurs, whereas in leaves and flowers only 5a steroids (Skhirtladze et al, 2006;Kemertelidze and Benidze, 2001) have been detected.…”

Determination of steroidal glycosides in Yucca gloriosa flowers by LC/MS/MS

“…Y. gloriosa L. is a perennial, evergreen bush cultivated in eastern Georgia which easily adapts unfavorable climatic and soil conditions [2]. Previous investigations carried out on Y. gloriosa led to the isolation of steroidal saponins from different parts of the plant [2,8] (Fig. 1).…”

“…Alexin underwent state registration and was put into production. Previous phytochemical investigation on the steroidal saponins occurring in the flowers of Y. gloriosa led to the isolation of the spirostane saponins named yuccaloesides A, B, C, E (1, 3, 5, 6), degalactotigonin (2), and gitogenin 3-O-␣-l-rhamnopyranosyl-␤-lycotetraoside (4) [2][3][4][5][6][7][8]. These compounds show as aglycons smilagenin (1), tigogenin (2, 3, 5, 6) and gitogenin (4) and possess sugar chains ranging from two to six sugar units.…”