Rivalosides A and B, Two 19-Oxo Triterpenoid Saponins from Galium rivale
Journal of Natural Products2000Vol. 63(7), pp. 1012–1014
Citations Over Time
Abstract
Two new oleanene-type triterpene glycosides, rivaloside A (2alpha-acetoxy-3alpha-hydroxy-19-oxo-olean-12-en-28-o ic acid 28-O-beta-glucopyranosyl-(1-->6)-beta-D-glucopyranoside) (1) and rivaloside B (2alpha,3alpha-dihydroxy-19-oxo-olean-12-en-28-oic acid 28-O-beta-glucopyranosyl-(1-->6)-beta-D-glucopyranoside) (2), were isolated from aerial parts of Galium rivale. The structures were determined on the basis of spectroscopic data and chemical transformations. Under alkaline or acid hydrolysis, rivalosides A and B undergo allylic rearrangement with migration of the double bond. These compounds are the first representatives of 19-oxo substituted oleanenes, and they seem to be promising as taxonomic markers for G. rivale.
Related Papers
- → Production of Triterpene Acids by Cell Suspension Cultures of Olea europaea(2007)95 cited
- → 3β,24-Dihydroxyolean-12-en-28-oic acid, a pentacyclic triterpene acid from Lantana indica(1990)21 cited
- Waxes and Triterpene acids from Lagerstroemia loudonii fruit(2013)
- → W16-P-042 Bioavailability of minor components of orujo olive oil in the postprandial period in humans(2005)
- → Aqueous plant extracts with a high content of oleanolic and betulinic acid(2006)