title: Structures of new friedelane- and norfriedelane-type triterpenes and polyacylated eudesmane-type sesquiterpene from Salacia chinensis LINN. (S. prinoides DC., Hippocrateaceae) and radical scavenging activities of principal constituents.
abstract: Two new friedelane-type triterpenes, salasones D and E, a new norfriedelane-type triterpene, salaquinone B, and a new polyacylated eudesmane-type sesquiterpene, salasol B, were isolated from the stems of Salacia chinensis LINN. (S. prinoides DC., Hippocrateaceae) collected in Thailand. Their stereostructures were elucidated on the basis of chemical and physicochemical evidence. Some norfriedelane-type triterpene, lignan, and catechin constituents were found to show radical scavenging activity.
authors.affiliation: Kyoto Pharmaceutical University, Japan.
authors.forename: Akinobu
authors.initials: A
authors.lastname: Kishi
authors.forename: Toshio
authors.initials: T
authors.lastname: Morikawa
authors.forename: Hisashi
authors.initials: H
authors.lastname: Matsuda
authors.forename: Masayuki
authors.initials: M
authors.lastname: Yoshikawa
mesh_terms: D001713:Biphenyl Compounds; D002851:Chromatography, High Pressure Liquid; D016166:Free Radical Scavengers / Q000737:chemistry* / Q000494:pharmacology*; D031320:Hippocrateaceae / Q000737:chemistry*; D009682:Magnetic Resonance Spectroscopy; D010851:Picrates / Q000737:chemistry; D045787:Sesquiterpenes, Eudesmane / Q000737:chemistry* / Q000494:pharmacology*; D021241:Spectrometry, Mass, Electrospray Ionization; D013055:Spectrophotometry, Infrared; D013056:Spectrophotometry, Ultraviolet; D013785:Thailand; D014315:Triterpenes / Q000737:chemistry* / Q000494:pharmacology*
chemical_list: D001713:Biphenyl Compounds; D016166:Free Radical Scavengers; D010851:Picrates; D045787:Sesquiterpenes, Eudesmane; D014315:Triterpenes; C421805:friedelane; C015872:eudesmane; C004931:1,1-diphenyl-2-picrylhydrazyl