3"-hydroxyamentoflavone and its 7-O-methyl ether, two new biflavonoids from Aristolochia contorta

Arch Pharm Res. 2005 Nov;28(11):1233-5. doi: 10.1007/BF02978204.

Abstract

Two new biflavonoids, 3"-hydroxyamentoflavone-7-O-methyl ether (1) and 3"-hydroxyamentoflavone (2), were isolated from the fruits of Aristolochia contorta Bge. Their structures were elucidated by HR-ESI-MS, 1D-, and 2D-NMR spectroscopy.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Aristolochia / chemistry*
  • Biflavonoids / pharmacology*
  • Fruit / chemistry
  • Indicators and Reagents
  • Mass Spectrometry
  • Spectrometry, Mass, Electrospray Ionization
  • Spectrometry, Mass, Fast Atom Bombardment

Substances

  • 3''-hydroxyamentoflavone
  • 3''-hydroxyamentoflavone-7-O-methyl ether
  • Biflavonoids
  • Indicators and Reagents