Structural determination of abutilins A and B, new flavonoids from Abutilon pakistanicum, by 1D and 2D NMR spectroscopy

Magn Reson Chem. 2010 Feb;48(2):159-63. doi: 10.1002/mrc.2546.

Abstract

Two new flavonoids, abutilin A and B, were isolated from the chloroform soluble fraction of Abutilon pakistanicum and their structures assigned from (1)H and (13)C NMR spectra, DEPT and by 2D COSY, HMQC and HMBC experiments. Ferulic acid (3), (E)-cinnamic acid (4), 5-hydroxy-4',6,7,8-tetramethoxyflavone (5), kaempferol (6), luteolin (7) and luteolin 7-O-beta-D-glucopyranoside (8) have also been reported from this species.

MeSH terms

  • Algorithms
  • Chloroform / chemistry
  • Cinnamates / chemistry
  • Cinnamates / isolation & purification
  • Coumaric Acids / chemistry
  • Coumaric Acids / isolation & purification
  • Deuterium
  • Flavones / chemistry*
  • Flavones / isolation & purification
  • Flavonoids / chemistry*
  • Flavonoids / isolation & purification
  • Glucosides / chemistry
  • Glucosides / isolation & purification
  • Kaempferols / chemistry
  • Kaempferols / isolation & purification
  • Luteolin / chemistry
  • Luteolin / isolation & purification
  • Magnetic Resonance Spectroscopy
  • Malvaceae / chemistry*
  • Molecular Structure
  • Nuclear Magnetic Resonance, Biomolecular
  • Solvents / chemistry

Substances

  • Cinnamates
  • Coumaric Acids
  • Flavones
  • Flavonoids
  • Glucosides
  • Kaempferols
  • Solvents
  • abutilin A
  • abutilin B
  • cinnamic acid
  • kaempferol
  • Chloroform
  • Deuterium
  • ferulic acid
  • Luteolin