title: Acylated-oxypregnane glycosides from the roots of Araujia sericifera.
abstract: Twenty-three new acylated-oxypregnane glycosides were obtained from the roots of Araujia sericifera. (Asclepiadaceae). These glycosides were confirmed to be tetraglycosides possessing twelve known compounds, 12-O-benzoyllineolon, 12-O-benzoyldeacylmetaplexigenin, ikemagenin, kidjolanin, cynanchogenin, caudatin, rostratamine, penupogenin, 12-O-benzoylisolineolon, 12-O-tigloyldecylmetaplexigenin (incisagenin), 12-O-benzoyl-20-O-acetylsarcostin, 20-O-benzoyl-12-O-(E)-cinnamoyl-3 beta,5 alpha,8 beta,12 beta,14 beta,17 beta,20-heptahydroxy-(20S)-pregn-6-ene and ten new acylated-oxypregnanes, 12-O-benzoyl-20S-hydroxyisolineolon, 12-O-tigloyllineolon, 12-O-salicyloyllineolon, 12-O-salicyloyldeacylmetplexigenin, 12-O-benzoyl-3 beta,5 alpha,8 beta,12 beta,14 beta,17 beta-hexahydroxypregn-6-en-20-one, 12-O-benzoyl-19-benzoyloxydeacylmetapleligenin, 12-O-benzoyl-19-benzoyloxy-20-O-acetylsarcostin, 12-O-benzoyl-19-salicyloyloxy-20-O-acetylsarcostin, 12-O-benzoyl-5 alpha,6 alpha-epoxydeacylmetaplexigenin, and 12-O-benzoyl-5 alpha,6 alpha-epoxylineolon as their aglycones, using both spectroscopic and chemical methods.
authors.affiliation: Institute for Environmental Sciences, University of Shizuoka, Japan. warashin@sea.u-shizuoka-ken.ac.jp
authors.forename: Tsutomu
authors.initials: T
authors.lastname: Warashina
authors.forename: Tadakata
authors.initials: T
authors.lastname: Noro
mesh_terms: D029062:Apocynaceae / Q000737:chemistry*; D002240:Carbohydrate Sequence; D002851:Chromatography, High Pressure Liquid; D006027:Glycosides / Q000737:chemistry / Q000302:isolation & purification; D006868:Hydrolysis; D009682:Magnetic Resonance Spectroscopy; D000432:Methanol; D008969:Molecular Sequence Data; D010936:Plant Extracts / Q000737:chemistry; D018517:Plant Roots / Q000737:chemistry; D011280:Pregnanolone / Q000031:analogs & derivatives* / Q000737:chemistry* / Q000302:isolation & purification; D012997:Solvents; D016339:Spectrometry, Mass, Fast Atom Bombardment
chemical_list: D006027:Glycosides; D010936:Plant Extracts; D012997:Solvents; D011280:Pregnanolone; D000432:Methanol