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Isolation of flavonoids and a chalcone from Helichrysum odoratissimum and synthesis of helichrysetin

J Nat Prod. 1989 May-Jun;52(3):629-33. doi: 10.1021/np50063a025.

Abstract

3,5-Dihydroxy-6,7,8-trimethoxyflavone, 3-O-methylquercetin, and helichrysetin were isolated from the flowers of the Rwandese medicinal plant, Helichrysum odoratissimum. Because of inconsistencies of the mp of the latter chalcone, a synthesis of helichrysetin was developed. 3-O-Methylquercetin was shown to be an active principle as it displayed antimicrobial activity.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Anti-Infective Agents / chemical synthesis
  • Anti-Infective Agents / isolation & purification*
  • Anti-Infective Agents / pharmacology
  • Chalcone / analogs & derivatives
  • Chalcone / biosynthesis*
  • Chalcone / chemical synthesis
  • Chalcone / isolation & purification*
  • Flavonoids / isolation & purification*
  • Microbial Sensitivity Tests
  • Plants, Medicinal / analysis*
  • Propiophenones / biosynthesis*
  • Propiophenones / isolation & purification*

Substances

  • Anti-Infective Agents
  • Flavonoids
  • Propiophenones
  • Chalcone
  • helichrysetin