Five new steroidal glycosides from the stems of Solanum sodomaeum.
ABSTRACT Besides 12 known glycosides, five new steroidal glycosides have been isolated from the stems of Solanum sodomaeum L. (Solanaceae). The chemical structures of these five glycosides were determined on the basis of spectroscopic data as well as chemical evidence, and the structure of one known steroidal glycoside was corrected.
Article: C(22)-Steroidal Lactone Glycosides from Stems and Leaves of Paris polyphylla var. yunnanensis.[show abstract] [hide abstract]
ABSTRACT: Further phytochemical investigation on the stems and leaves of Paris polyphylla var. yunnanensis led to the isolation of three C(22)-steroidal lactone glycosides. Two of these are new compounds, designated as chonglouoside SL-7 (1) and chonglouoside SL-8 (2). Their structures were elucidated on the basis of extensive spectroscopic analysis, as well as comparison with the reported spectroscopic data. This is the first report of C(22)-steroidal lactone glycosides isolated from the Paris genus. Compounds 1 and 3 showed moderate antimicrobic activity against Propionibacterium acnes with MIC values of 31.3 and 3.9μg/mL, respectively.Fitoterapia 12/2012; · 1.85 Impact Factor