Triterpene glycosides of Astragalus and their genins lxii. glycosides of Astragalus stipulosus

摘要

We are continuing research on triterpene glycosides of the cycloartane series that are produced by plants of the Astragalus genus (Leguminosae( [1]. In the present communication, compounds of stipular astragalus (Astragalus stipulosus Boriss.) are described. The cycloartane glycosides askendoside B (1) [2, 3], D (2) [3, 4], G (3) [5], and saccharose were isolated from the roots of this plants. The glycosides were identified by direct comparison with authentic samples and on the basis of ~1H and ~13C NMR spectra, which were interpreted using 2D NMR ~1H-~1H COSY, HMQC, and results from DEPT and J-modulation experiments.