A new dammarane type triterpene glucoside from the aerial parts of (Rhamnaceae).

3-O--D-glucopyranosyl gouanogenin A (), a new naturally occurring dammarane class of triterpene glucoside, has been isolated from the aerial parts of along with six known secondary metabolites . Their structure was elucidated through spectroscopic data including 1 D- and 2 D-NMR. The compounds and showed significant antioxidant potential in DPPH radical scavenging assay.

Oligoamide, a new lactam from the leaves of .

A new lactam, oligoamide (), along with three known compounds (-), stigmasterol-3-O-β-D-glucopyranoside (), formononetin () and (-)-pinitol () were isolated from the CHCl/CHOH (1:1) extract of the leaves of by chromatographic separation. Their structures were elucidated on the basis of spectroscopic analysis (UV, IR, MS, 1D, and 2D NMR). Compound was found to have weak antioxidant and urease inhibitory potential.

Antiproliferative and cytotoxic secondary metabolites from fruits of Leplaea mayombensis.

Two new seco-lanostane-type triterpenes, named mayomlactones A (1) and B (2) were isolated from the fruits of Leplaea mayombensis together with 10 known compounds (3-12). Structures of the new compounds were elucidated by extensive spectroscopic studies. Except compounds 11 and 12, all the other chemical compounds are newly reported from Leplaea genus.