Natural Product Sciences

The Korean Society of Pharmacognosy (한국생약학회)
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Anti-platelet Effect of the Phenolic Constituents Isolated from the Leaves of Magnolia obovata

  • Pyo, Mi-Kyung (Natural Products Research Institute, Seoul National University) ;
  • Koo, Yean-Kyoung (Natural Products Research Institute, Seoul National University) ;
  • YunChoi, Hye-Sook (Natural Products Research Institute, Seoul National University)
  • Published : 2002.12.01
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Abstract

In the course of our work on anti-platelet constituents from plants, eight phenolic compounds, $({\pm})-syringaresinol$ (1), 4-hydroxybenzaldehyde (2), 4-hydroxybenzoic acid (3), vanillic acid (4), 4-hydroxy cinnamic acid (5), quercetin 3-O-rhamnoside (6), rutin (7), and quercetin $3-(2^G-rhamnosylrutinoside)$ (8) were isolated from the methanol extract of the leaves of Magnolia obovata. The compounds were identified based on the spectroscopic data. Compound 2, 3, 5, 6, 7 and 8 were isolated for the first time from genus Magnolia. 1 and 6 showed same order of inhibitory potencies as acetylsalicylic acid (ASA) to rat platelet aggregation induced by all the stimulators tested. The remaining six compounds showed only mild effects.

Keywords

References

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