title: Structural revision of two flavanonol glycosides from Smilax glabra.
abstract: The structures of two flavanonol glycosides isolated from Smilax glabra, named smitilbin and neosmitilbin, have been revised to isoastilbin and neoastilbin, respectively. The revised structures were determined based on intensive studies of chemical interconversion, NMR spectroscopy, and X-ray crystallographic analysis. The latest NMR data were also summarized.
authors.affiliation: State Key Laboratory of Pharmaceutical Biotechnology, School of Life Sciences, Nanjing University, Nanjing 210093, PR China.
authors.forename: Xiang
authors.initials: X
authors.lastname: Zhou
authors.forename: Qiang
authors.initials: Q
authors.lastname: Xu
authors.forename: Jian-Xin
authors.initials: JX
authors.lastname: Li
authors.forename: Ting
authors.initials: T
authors.lastname: Chen
mesh_terms: D005419:Flavonoids / Q000737:chemistry* / Q000302:isolation & purification; D044948:Flavonols / Q000737:chemistry* / Q000302:isolation & purification; D006027:Glycosides / Q000737:chemistry* / Q000302:isolation & purification; D015394:Molecular Structure; D010936:Plant Extracts / Q000737:chemistry*; D032281:Smilax / Q000737:chemistry*
chemical_list: D005419:Flavonoids; D044948:Flavonols; D006027:Glycosides; D010936:Plant Extracts; C520363:neoastilbin; C099069:astilbin