A benzoquinone and flavonoids from Cyperus alopecuroides

Phytochemistry. 2002 Jun;60(4):385-7. doi: 10.1016/s0031-9422(02)00060-2.

Abstract

A benzoquinone, named alopecuquinone, was isolated from the ethanol extract of the inflorescences of Cyperus alopecuroides. Its structure was primarily elucidated by spectroscopic analysis including 1H, 13C NMR, APT, HMQC, 1H-1H COSY and CIMS. The known flavonoids, vicenin 2, orientin, diosmetin, quercetin 3,3'-dimethyl ether and its 3,4'-dimethyl ether, were also isolated and characterized. The ethanol extract of the plant material showed moderate estrogenic activity using a strain of Saccharomyces cerevisiae.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Benzoquinones / chemistry*
  • Benzoquinones / isolation & purification*
  • Benzoquinones / pharmacology
  • Cyperus / chemistry*
  • Egypt
  • Estrogens, Non-Steroidal / chemistry
  • Estrogens, Non-Steroidal / isolation & purification
  • Estrogens, Non-Steroidal / pharmacology
  • Flavonoids / chemistry*
  • Flavonoids / isolation & purification*
  • Flavonoids / pharmacology
  • Galactosidases / metabolism
  • Humans
  • Isoflavones*
  • Magnoliopsida / chemistry*
  • Mass Spectrometry / methods
  • Nuclear Magnetic Resonance, Biomolecular / methods
  • Oils, Volatile / analysis
  • Oils, Volatile / chemistry
  • Phytoestrogens
  • Plant Extracts
  • Plant Preparations
  • Plants, Medicinal
  • Plasmids / biosynthesis
  • Plasmids / metabolism
  • Receptors, Estrogen / metabolism
  • Saccharomyces cerevisiae / drug effects
  • Saccharomyces cerevisiae / enzymology
  • Spectrophotometry, Ultraviolet

Substances

  • Benzoquinones
  • Estrogens, Non-Steroidal
  • Flavonoids
  • Isoflavones
  • Oils, Volatile
  • Phytoestrogens
  • Plant Extracts
  • Plant Preparations
  • Receptors, Estrogen
  • quinone
  • Galactosidases