New Triterpenoid Saponins from the Roots of Sinocrassula asclepiadea

Abstract

Five new triterpenoid monodesmosides (sinocrassulosides I—V, 1—5) and six bisdesmosides (sinocrassulosides VI—XI, 6—11), in which 2—11 possess different acyl groups in the glycosidic moieties, were isolated from the roots of Sinocrassula asclepiadea FRANCH. Sinocrassulosides VI (4) and V (5) also contained a novel A-seco aglycone in their structures. All of the structures were determined on the basis of spectroscopic and physicochemical evidence.