title: A new pentacyclic triterpenoid glucoside from Prunus serrulata var. spontanea.
abstract: A new triterpenoid, 2alpha,3alpha,24-trihydroxyurs-12-en-28-oic acid-28-O-beta-D-glucopyranosyl ester (4) along with four known triterpenoids, ursolic acid (1), 2alpha-hydroxyursolic acid (2), 2alpha,3alpha,24-trihydroxyurs-12-en-28-oic acid (3), and 2alpha,3alpha,19alpha,24-tetrahydroxyurs-12-en-28-oic acid-28-O-beta-D-glucopyranosyl ester (5), were isolated from the leaves of Prunus serrulata var. spontanea (Rosaceae). Compounds 3-5 showed ONOO(-) scavenging activity, whereas compounds 1 and 2 were virtually inactive.
authors.affiliation: Faculty of Food Science and Biotechnology, Pukyong National University, Busan 608-737, Korea.
authors.forename: Hyun Ah
authors.initials: HA
authors.lastname: Jung
authors.forename: Hae Young
authors.initials: HY
authors.lastname: Chung
authors.forename: Jee H
authors.initials: JH
authors.lastname: Jung
authors.forename: Jae Sue
authors.initials: JS
authors.lastname: Choi
mesh_terms: D016166:Free Radical Scavengers / Q000737:chemistry / Q000302:isolation & purification; D006027:Glycosides / Q000737:chemistry / Q000302:isolation & purification; D009682:Magnetic Resonance Spectroscopy; D009005:Monosaccharides / Q000737:chemistry* / Q000302:isolation & purification; D010396:Penicillamine / Q000737:chemistry; D030421:Peroxynitrous Acid / Q000737:chemistry; D018515:Plant Leaves / Q000737:chemistry; D027861:Prunus / Q000737:chemistry*; D016339:Spectrometry, Mass, Fast Atom Bombardment; D013055:Spectrophotometry, Infrared; D017550:Spectroscopy, Fourier Transform Infrared; D014315:Triterpenes / Q000737:chemistry* / Q000302:isolation & purification
chemical_list: C488483:2alpha,3alpha,24-trihydroxyurs-12-en-28-oic acid-28-O-beta-D-glucopyranosyl ester; D016166:Free Radical Scavengers; D006027:Glycosides; D009005:Monosaccharides; D014315:Triterpenes; D030421:Peroxynitrous Acid; D010396:Penicillamine