Search results for "Oleanolic acid glycosides"
showing 2 items of 2 documents
Cytotoxic glycosides from the roots of Weigela x “Bristol Ruby”
2019
International audience; Seven oleanane-type glycosides were extracted and isolated by various chromatographic methods from the roots of Weigela x "Bristol Ruby" (1-7), six previously undescribed (1-6) and a known one (7). Their structures were assigned by spectroscopic analysis mainly 2D NMR and mass spectrometry (ESIMS). Selected triterpenoid glycosides (1-3, 6, 7) displayed a good cytotoxic activity against a mouse colon cancer cell line CT26.
Phytochemistry of Weigela x "kosteriana variegata" (Caprifoliaceae)
2018
International audience; One new triterpene glycoside 3-O-beta-D-xylopyranosyl-(1 -> 4)-[beta-D-glucopyranosyl-(1 -> 3)]-beta-D-xyl opyranosyl-(1 -> 4)-beta-D-xylopyranosyl-(1 -> 3)-alpha-L-rhamnopyranosyl-(1 -> 2)-alpha-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 H-1- and C-13 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 …