title: Two new triterpenoid glycosides from Cyclocarya paliurus.
abstract: Two new dammarane triterpenoid glycosides named cyclocarosides B (1) and C (2) were isolated from the leaves of Cyclocarya paliurus. Based on FAB-MS, HRESI-MS, IR, 1H NMR, 13C NMR, and 2D-NMR (HMQC, HMBC, COSY, ROESY) data, the structures of cyclocarosides B (1) and C (2) were elucidated as (20S,24R)-epoxydammarane (3beta,12beta)-25-hydroxyl-12-O-beta-D-quinovopyranosyl-3-O-beta-D-quinovopyranoside (1), and (20S,24R)-epoxydammarane (3beta, 12beta)-25-hydroxyl-12-O-alpha-L-arabinopyranosyl-3-O-(5'-O-acetyl)-alpha-L-arabinofuranoside (2).
authors.affiliation: State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650204, Yunnan, China.
authors.forename: Zhi-Yong
authors.initials: ZY
authors.lastname: Jiang
authors.forename: Xue-Mei
authors.initials: XM
authors.lastname: Zhang
authors.forename: Jun
authors.initials: J
authors.lastname: Zhou
authors.forename: Sheng-Xiang
authors.initials: SX
authors.lastname: Qiu
authors.forename: Ji-Jun
authors.initials: JJ
authors.lastname: Chen
mesh_terms: D006027:Glycosides / Q000737:chemistry* / Q000302:isolation & purification*; D029525:Juglandaceae / Q000737:chemistry*; D009682:Magnetic Resonance Spectroscopy; D015394:Molecular Structure; D018515:Plant Leaves / Q000737:chemistry; D014315:Triterpenes / Q000737:chemistry* / Q000302:isolation & purification*
chemical_list: D006027:Glycosides; D014315:Triterpenes; C511906:cyclocaroside B; C511905:cyclocaroside C