Spermacosides a and B, two new triterpenoid saponins from burm.f.

Two new triterpenoid saponins, named spermacosides A-B (-), together with two known oleanane-type triterpenoid saponins, 3--D-xylopyranosyl-(1→3)-D-glucopyranosylbayogenin ( and 3---D-glucopyranosylbayogenin (), were isolated from the ethyl acetate extract of Burm.f. in a phytochemical investigation.

Jasminanthoside - a new pregnane-steroid from .

A new pregnane steroid, jasminanthoside (), together with three known compounds, telosmoside A7 (), syringaresinol (), and methyl 6-deoxy-3--methyl--D-allopyranosyl-(1→4)--D-oleandropyranoside () were isolated from the ethyl acetate extract of roots collected in Vietnam. Their chemical structures were elucidated by NMR and MS spectroscopic data analysis along with the comparison of their data with the published ones in the literature. Although was a known compound, its full NMR data were reported for the first time.