Phenylethanoid Glycosides from Seeds of Paulownia coreana

  • Si, Chuan-Ling (College of Material Science and Chemical Engineering, Tianjin University of Science and Technology) ;
  • Bae, Young-Soo (College of Forest Sciences, Kangwon National University)
  • Received : 2006.06.26
  • Accepted : 2006.07.31
  • Published : 2007.03.25

Abstract

Seeds of Paulownia coreana were collected, extracted with acetone-$H_2O$ (7 : 3, v/v), concentrated under reduced pressure and successively fractionated with n-hexane, methylene chloride, ethyl acetate and water on a separatory funnel. The $H_2O$ soluble fraction was chromatographed on a Sephadex LH-20 column using aqueous methanol and ethanol-hexane as washing solvents. Two isomeric phenylethanoid glycosides, verbascoside (1) and isoverbascoside (2), and one epimeric phenylethanoid glycoside, campneoside II (3), were isolated and their structures were elucidated on the basis of chemical and spectroscopical data.

Keywords

References

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