Two new phenolic water-soluble constituents from branch bark of Davidia involucrata

Nat Prod Res. 2008 Apr 15;22(6):483-8. doi: 10.1080/14786410600906426.

Abstract

Two new phenolic water-soluble constituents, involcranoside A (1) and involcranoside B (2) have been isolated along with five known phenolic compounds: 3,4-dimethoxyphenyl-O-beta-D-gluco-pyranoside (3), picein (4), and 1,4-dihydroxy-3-methoxy-phenyl-4-O-beta-D-glucopyranoside (5), leonuriside A (6) and 4-hydroxy-3-methoxybenzoic acid (7) from the branch bark of Davidia involucrata. Identification of their structures was achieved by 1D and 2D NMR experiments, including (1)H-(1)H COSY, NOESY, HMQC and HMBC methods and FAB mass spectral data.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Glycosides / chemistry
  • Glycosides / isolation & purification*
  • Nuclear Magnetic Resonance, Biomolecular
  • Nyssaceae / chemistry*
  • Optical Rotation
  • Phenols / chemistry
  • Phenols / isolation & purification*
  • Plant Bark / chemistry
  • Plant Extracts / chemistry
  • Plant Extracts / isolation & purification
  • Spectrometry, Mass, Fast Atom Bombardment
  • Spectrophotometry, Ultraviolet
  • Spectroscopy, Fourier Transform Infrared

Substances

  • Glycosides
  • Phenols
  • Plant Extracts