title: Four new cycloartane glycosides from Thalictrum fortunei.
abstract: Four new cycloartane glycosides were isolated from the aerial parts of Thalictrum fortunei (Ranunculaceae). The chemical structures of these new glycosides were elucidated as 3-O-beta-D-glucopyranosyl-(1-->4)-beta-D-fucopyranosyl (22S,24Z)-cycloart-24-en-3beta,22,26-triol 26-O-beta-D-glucopyranoside, 3-O-beta-D-glucopyranosyl-(1-->4)-beta-D-fucopyranosyl (22S,24Z)-cycloart-24-en-3beta,22,26-triol 26-O-beta-D-quinovopyranosyl-(1-->6)-beta-D-glucopyranoside, 3-O-beta-D-glucopyranosyl-(1-->4)-beta-D-fucopyranosyl (22S,24Z)-cycloart-24-en-3beta,22,26-triol 26-O-beta-D-xylopyranosyl-(1-->6)-beta-D-glucopyranoside, and 3-O-beta-D-glucopyranosyl-(1-->4)-beta-D-fucopyranosyl (22S,24Z)-cycloart-24-en-3beta,22,26-triol 26-O-alpha-L-arabinopyranosyl-(1-->6)-beta-D-glucopyranoside by extensive NMR methods, HR-ESI-MS, and hydrolysis. This is the first report of (22S,24Z)-3beta,22,26-trihydroxycycloartan-24-ene (thelictogenin A, 5) being glycosylated at C-26.
authors.affiliation: Department of Phytochemistry, China Pharmaceutical University, Nanjing, PR China.
authors.forename: Xian-Tao
authors.initials: XT
authors.lastname: Zhang
authors.forename: Lei-Hong
authors.initials: LH
authors.lastname: Zhang
authors.forename: Wen-Cai
authors.initials: WC
authors.lastname: Ye
authors.forename: Xiao-Ling
authors.initials: XL
authors.lastname: Zhang
authors.forename: Zhi-Qi
authors.initials: ZQ
authors.lastname: Yin
authors.forename: Shou-Xun
authors.initials: SX
authors.lastname: Zhao
authors.forename: Xin-Sheng
authors.initials: XS
authors.lastname: Yao
mesh_terms: D002236:Carbohydrate Conformation; D002240:Carbohydrate Sequence; D006027:Glycosides / Q000737:chemistry / Q000302:isolation & purification; D006868:Hydrolysis; D009682:Magnetic Resonance Spectroscopy; D008969:Molecular Sequence Data; D010936:Plant Extracts / Q000737:chemistry; D021241:Spectrometry, Mass, Electrospray Ionization; D031949:Thalictrum / Q000737:chemistry*; D014315:Triterpenes / Q000737:chemistry* / Q000302:isolation & purification
chemical_list: D006027:Glycosides; D010936:Plant Extracts; D014315:Triterpenes; C085352:cycloartane