title: Isolation and identification of a new dicoumarin from the roots of Daphne genkwa.
abstract: OBJECTIVE
  To investigate the chemical constituents of the roots of Daphne genkwa.
  
  
  METHODS
  Silica gel and Sephadex LH-20 column chromatographic techniques were employed for the isolation and purification. The structure was elucidated by a combination of spectroscopic analyses.
  
  
  RESULTS
  A new dicoumarin named isodaphnoretin was isolated and the structure was established as 7-hydroxy-6-methoxy-4-[(2-oxo-2H-1-benzopyran-7-yl)-oxyl]-2H-1-benzopyran-2-one.
  
  
  CONCLUSIONS
  Isodaphnoretin is a new compound.
authors.affiliation: Key Laboratory for Biotechnology on Medicinal Plants of Jiangsu Province, Xuzhou Normal University, Xuzhou 221116, China. njzheng2004@126.com
authors.forename: Wei-fa
authors.initials: WF
authors.lastname: Zheng
authors.forename: Feng
authors.initials: F
authors.lastname: Shi
mesh_terms: D003374:Coumarins / Q000737:chemistry / Q000302:isolation & purification*; D032364:Daphne / Q000737:chemistry*; D008968:Molecular Conformation; D015394:Molecular Structure; D018517:Plant Roots / Q000737:chemistry; D010946:Plants, Medicinal / Q000737:chemistry*
chemical_list: D003374:Coumarins; C506132:isodaphnoretin