Prenylated flavonoids, monoterpenoid furanocoumarins and other constituents from the twigs of Dorstenia elliptica (Moraceae)

Phytochemistry. 2004 Jan;65(2):221-6. doi: 10.1016/j.phytochem.2003.10.028.

Abstract

A monoprenylated flavan and two monoterpenoid substituted furanocoumarins were isolated from the twigs of Dorstenia elliptica along with 3-(3,3-dimethylallyl)-4,2',4'-trihydroxylchalcone, psoralen, bergapten, O-[3-(2,2-dimethyl-3-oxo-2H-furan-5-yl)butyl]bergaptol, beta-sitosterol and its beta-D-glucopyranoside. The structure of the flavan was determined as 6(1,1-dimethylallyl)-7,4'-dihydroxylflavan and the monoterpenoid substituted furanocoumarins were assigned as O-[3-(2,2-dimethyl-3-oxo-2H-furan-5-yl)-3-hydroxybutyl]-bergaptol and O-[2-(5-hydroxy-2,6,6-trimethyl-3-oxo-2H-pyran-2-yl)ethyl]bergaptol, respectively, using spectroscopic analysis, especially, 2D NMR spectra.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Flavonoids / chemistry*
  • Flavonoids / isolation & purification
  • Furocoumarins / chemistry*
  • Furocoumarins / isolation & purification
  • Molecular Structure
  • Monoterpenes / chemistry*
  • Moraceae / chemistry*
  • Nuclear Magnetic Resonance, Biomolecular
  • Plant Stems / chemistry*

Substances

  • Flavonoids
  • Furocoumarins
  • Monoterpenes