title: A new beta-D-glucopyranosyl 2-oxo-urs-12-en-28-oate from the Cameroonian plant Combretum bracteatum.
abstract: From the Cameroonian plant Combretum bracteatum (Laws.) Engl. and Diels a new compound, beta-D-glucopyranosyl 3 beta,19 alpha-dihydroxy-2-oxo-urs-12-en-28-oate, was isolated along with three known ursane and oleane triterpenes and two galactopyranosyl lipids. This represents the first example of a naturally occurring 2-oxo-urs-12-enoic acid derivative.
authors.affiliation: Dipartimento di Chimica Organica, Università di Pavia, Via Taramelli 10, 27100 Pavia, Italy.
authors.forename: Germain
authors.initials: G
authors.lastname: Ntchatcho
authors.forename: Luisella
authors.initials: L
authors.lastname: Verotta
authors.forename: Paola Vita
authors.initials: PV
authors.lastname: Finzi
authors.forename: Giuseppe
authors.initials: G
authors.lastname: Zanoni
authors.forename: Giovanni
authors.initials: G
authors.lastname: Vidari
mesh_terms: D002163:Cameroon; D002236:Carbohydrate Conformation; D002849:Chromatography, Gas; D029765:Combretum / Q000737:chemistry*; D005960:Glucosides / Q000737:chemistry* / Q000302:isolation & purification; D006868:Hydrolysis; D009682:Magnetic Resonance Spectroscopy; D021241:Spectrometry, Mass, Electrospray Ionization; D013055:Spectrophotometry, Infrared; D014315:Triterpenes / Q000737:chemistry* / Q000302:isolation & purification
chemical_list: D005960:Glucosides; D014315:Triterpenes; C547459:beta-D-glucopyranosyl 2-oxo-urs-12-en-28-oate