title: A new stilbene diglycoside from Rheum undulatum.
abstract: A new stilbene diglycoside, piceatannol-3, 4'-O-beta-D-diglucopyranoside (I), together with desoxyrhaponticin (II), emodin-1-O-beta-D-glucopyranoside (III), and physcion-8-O-b-D-glucopyranoside (IV), were isolated from the rhizomes of cultivated Korean rhubarb rhizomes (Rheum undulatum), Jong DaeWhang, and the structures of I-IV were identified on the basis of chemical and spectral evidences.
authors.affiliation: Korea Ginseng Institute, Chung-Ang University, Ansung. sungkwon@cau.ac.kr
authors.forename: S K
authors.initials: SK
authors.lastname: Ko
mesh_terms: D055598:Chemical Phenomena; D002627:Chemistry, Physical; D004187:Disaccharides / Q000302:isolation & purification*; D006027:Glycosides / Q000737:chemistry / Q000302:isolation & purification; D006868:Hydrolysis; D009682:Magnetic Resonance Spectroscopy; D010936:Plant Extracts / Q000737:chemistry; D018517:Plant Roots / Q000737:chemistry; D010946:Plants, Medicinal; D012250:Rheum / Q000737:chemistry*; D013055:Spectrophotometry, Infrared; D013056:Spectrophotometry, Ultraviolet; D017550:Spectroscopy, Fourier Transform Infrared; D013267:Stilbenes / Q000737:chemistry / Q000302:isolation & purification*
chemical_list: D004187:Disaccharides; D006027:Glycosides; D010936:Plant Extracts; D013267:Stilbenes; C412950:piceatannol-3,4'-O-diglucopyranoside