Title: New Polyhydroxylated Steroidal Sapogenin and Saponin from the Leaves of Cestrum sendtenerianum.
Abstract: New Polyhydroxylated spirostanol sapogenin (1) and saponin (2) were isolated from the leaves of Cestrum sendtenerianum (Solanaceae). Their Structures were determined to be spirosta-5, 25(27)-diene-1β, 2α, 3β, 12β-tetrol (1) and spirosta-5, 25(27)-diene-1β, 2α, 3β, 12β-tetrol 3-O-β-D-galactopyranoside (2), respectively, on the basis of spectroscopic analysis, including two-dimensional NMR techniques, and the result of hydrolytic cleavage.