title: Two new rhamnopyranosides of neolignans from Sanguisorba officinalis.
abstract: Two new rhamnopyranosides of neolignans, (7S,8R)-4,9,5',9'-tetrahydroxy-3,3'-dimethoxy-8-O-4'-neolignan-7-O-α-l-rhamnopyranoside (1) and (7S,8R)-4,9,9'-trihydroxy-3,3',5'-trimethoxy-8-O-4'-neolignan-7-O-α-l-rhamnopyranoside (2), together with a known compound (7S,8R)-4,7,9,9'-tetrahydroxy-3,3'-dimethoxy-8-O-4'-neolignan (3), were isolated from the 80% EtOH extract of the roots of Sanguisorba officinalis. Their structures were characterized by spectroscopic analysis including 1D NMR, 2D NMR, and HR-ESI-MS, and chemical method.
authors.affiliation: College of Biological Resources and Environment Science, Qujing Normal University, Qujing, China. hujiang@ustc.edu
authors.forename: Jiang
authors.initials: J
authors.lastname: Hu
authors.forename: Xiao-Dong
authors.initials: XD
authors.lastname: Shi
authors.forename: Jian-Gang
authors.initials: JG
authors.lastname: Chen
authors.forename: Chang-Sheng
authors.initials: CS
authors.lastname: Li
mesh_terms: D004365:Drugs, Chinese Herbal / Q000737:chemistry / Q000302:isolation & purification*; D006027:Glycosides / Q000032:analysis / Q000737:chemistry / Q000302:isolation & purification*; D017705:Lignans / Q000032:analysis / Q000737:chemistry* / Q000302:isolation & purification; D015394:Molecular Structure; D019906:Nuclear Magnetic Resonance, Biomolecular; D018517:Plant Roots / Q000737:chemistry; D031993:Sanguisorba / Q000737:chemistry*; D013237:Stereoisomerism
chemical_list: C570976:(7S,8R)-4,9,5',9'-tetrahydroxy-3,3'-dimethoxy-8-O-4'-neolignan-7-O-alpha-L-rhamnopyranoside; C570977:(7S,8R)-4,9,9'-trihydroxy-3,3',5'-trimethoxy-8-O-4'-neolignan-7-O-alpha-L-rhamnopyranoside; D004365:Drugs, Chinese Herbal; D006027:Glycosides; D017705:Lignans