One new triterpene glycoside 3-O-D-xylopyranosyl-(1→4)-[-D-glucopyranosyl-(1→3)]-D-xylopyranosyl-(1→4)-D-xylopyranosyl-(1→3)-L-rhamnopyranosyl-(1→2)-L-arabinopyranosyloleanolic acid, was isolated from Weigela x “kosteriana variegata” (Caprifoliaceae), with three known ones. Their structures were characterized by a combination of mass spectrometry and 1D and 2D NMR spectrocopic techniques including 1H- and 13C NMR, COSY, TOCSY, NOESY, HSQC, and HMBC experiments. The toxicological properties of some glycosides were determined with a zebrafish-based assay. The results show that the most active compounds were toxic to the larvae in the range of 1 M.
All Science Journal Classification (ASJC) codes
- Plant Science
- Drug Discovery
- Complementary and alternative medicine