A triterpene from Rubus pinfaensis.
A new pentacyclic triterpene, pinfaensin, was isolated from the roots of Rubus pinfaensis and the structure elucidated by 13C NMR methods. This triterpene, a glycoside of pinfaensic acid (glucosyl 23-formyl-2 alpha,3 beta,19 alpha-trihydroxyurs-12-en-28-oate), in order to achieve purification and characterization, was hydrolysed to previously unreported pinfaensic acid which on acetylation and methylation gave methyl diacetoxypinfaensate (methyl 2 alpha,3 beta-diacetoxy-23-formyl-19 alpha-hydroxyurs-12-en-28-oate).
Durham
D G
DG
School of Pharmacy, Robert Gordon University, Aberdeen, U.K.
Liu
X
X
Richards
R M
RM
D002240:Carbohydrate Sequence; D009682:Magnetic Resonance Spectroscopy; D008516:Medicine, Chinese Traditional; D008969:Molecular Sequence Data; D010946:Plants, Medicinal / Q000737:chemistry*; D016339:Spectrometry, Mass, Fast Atom Bombardment; D014315:Triterpenes / Q000737:chemistry* / Q000302:isolation & purification
D014315:Triterpenes; C090265:pinfaensin