Chemistry of Natural Compounds

, Volume 54, Issue 1, pp 183–184 | Cite as

Proanthocyanidins from Seeds of Fraxinus americana

  • Junji Zhou
  • Arafat Aybek
  • Aybek Malik

Previously, several phenolic compounds were isolated from seeds of Fraxinus americana L. (Oleaceae) and characterized structurally [1, 2]. In continuation of studies of proanthocyanidins from seeds of this plant, we isolated two trimeric proanthocyanidins 1 and 2 [(–)-epigallocatechin-(4β-8)-(–)-epigallocatechin-3-O-gallate-(4β-8)-(–)-epigallocatechin (1, taraninin) and (–)-epigallocatechin-3-O-gallate-(4β-8)-(–)-epigallocatechin-(4β-8)-(+)-catechin (2)] from the n-BuOH extract of the aqueous Me2CO extract using column chromatography over microcrystalline cellulose followed by gel filtration over Sephadex LH-20.


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Authors and Affiliations

  1. 1.Merck Pharmaceutical Manufacturing (Jangsu) Co. Ltd. CASNantongP. R. China
  2. 2.Copenhagen University, Department of Food ScienceFaculty of ScienceCopenhagenDenmark
  3. 3.Jinghua Pharmaceutical GroupDongli (Nantong) Chemical Co., Ltd. CASNantongP. R. China

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