Antiinflammatory Effect of Forsythia suspensa Vahl and Its Active Fraction

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  • Antiinflammatory Effect of Forsythia suspensa VAHL and Its Active Principle.
  • Antiinflammatory Effect of Forsythia su

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This study was carried out to elucidate the antiinflammatory active principles obtained from 70% methanol extract of the dried fruit of Forsythia suspensa VAHL (F. suspensa). The methanol extract was then partitioned between n-hexane and water, and then the n-hexane fraction was evaporated to dryness under vacuum The n-hexane fraction was chromatographed (Frs. I-V), Fr. IV was rechromatographed (Frs. VI-VIII), and then Fr. VII was rechtomatographed (Frs. IX-XI) by silica gel column chromatography. The antiinflammatory activity of these fractions was investigated on acetic acid-induced vascular permeability in rats. The n-hexane fraction showed an antiinflammatory effect and these activities shifted successively to Fr. IV, Fr. VII and Fr. X. The chemical structure of the active principle obtained from Fr. X was identified as 3β-acetoxy-20, 25-epoxydammarane-24-ol. These results suggest that the antiinflammatory and an analgesic effect of 70% methanol extract of F. suspensa may be the result of the compound that it contains.

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