Planta Med 2005; 71(10): 973-976
DOI: 10.1055/s-2005-871229
Letter
© Georg Thieme Verlag KG Stuttgart · New York

Two New Antioxidant Stilbene Dimers, Parthenostilbenins A and B from Parthenocissus tricuspidata

Hyoung Ja Kim1 , 2 , Muhammad Saleem1 , Seon Hee Seo1 , Changbae Jin1 , Yong Sup Lee2
  • 1Division of Life Sciences, Korea Institute of Science and Technology, Cheongryang, Seoul, Korea
  • 2College of Pharmacy, Kyung Hee University, Seoul, Korea
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Publikationsverlauf

Received: January 14, 2005

Accepted: March 22, 2005

Publikationsdatum:
19. August 2005 (online)

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Abstract

The ethyl acetate fraction of an aqueous alcoholic extract from the stem of Parthenocissus tricuspidata yielded 11 known compounds (1 - 11) and two new stilbene dimers parthenostilbenins A (12) and B (13) upon purification either by preparative TLC or reversed phase HPLC. The structures of the new isolates were identified using a combination of FAB-MS and NMR. These compounds were assessed for antioxidant activities in three different bioassay systems. Among them, piceatannol showed the strongest inhibitory activity in these assay systems. Two new compounds, parthenostilbenins A (12) and B (13) inhibited lipid peroxidation (IC50 = 20.35 ± 1.22 and 18.68 ± 0.51 μg/mL, respectively) in a rat liver homogenate.

References

Prof. Yong Sup Lee, Ph. D.

Department of Pharmaceutical Science

College of Pharmacy

Kyung Hee University

Dongdaemun-Ku

1 Hoegi-Dong

Seoul 130-701

Korea

Telefon: +82-2-961-0370

Fax: +82-2-966-3885

eMail: kyslee@khu.ac.kr