title: [Isoflavones from Glycyrrhiza eurycarpa].
abstract: A new isoflavone, named eurycarpin A and a new natural product isoflavone named eurycarpin B have been isolated from the roots of Glycyrrhiza eurycarpa P. C. Li. Their structures were determined to be 7,2',4'-trihydroxy-3'-(3,3-dimethylallyl) isoflavone(I) and 7,2'-dihydroxy-6",6"-dimethylpyrano-(2",3":4',3') isoflavone(II) on the basis of spectroscopic analysis (UV, EI-MS, 1HNMR, 13CNMR, NOE difference and HMBC). In addition, three known isoflavones, licoisoflavone A, calycosin and formononetin, were obtained for the first time from this plant.
authors.affiliation: Institute of Medicinal Plant, Chinese Academy of Medical Science and Peking Union Medical College, Beijing 100094.
authors.forename: Y M
authors.initials: YM
authors.lastname: Zhang
authors.forename: X D
authors.initials: XD
authors.lastname: Xu
authors.forename: B H
authors.initials: BH
authors.lastname: Hu
authors.forename: Q
authors.initials: Q
authors.lastname: Liu
authors.forename: C Y
authors.initials: CY
authors.lastname: Hou
authors.forename: Y L
authors.initials: YL
authors.lastname: Liu
authors.forename: J S
authors.initials: JS
authors.lastname: Yang
mesh_terms: D004365:Drugs, Chinese Herbal / Q000737:chemistry*; D006035:Glycyrrhiza / Q000737:chemistry*; D007529:Isoflavones / Q000737:chemistry / Q000302:isolation & purification*; D015394:Molecular Structure; D010946:Plants, Medicinal
chemical_list: D004365:Drugs, Chinese Herbal; D007529:Isoflavones; C437402:eurycarpin A; C121707:7,3'-dihydroxy-4'-methoxyisoflavone; C007768:formononetin; C437403:eurycarpin B