A new prenylated xanthone from the branches of Calophyllum inophyllum

J Asian Nat Prod Res. 2011 Mar;13(3):265-9. doi: 10.1080/10286020.2010.550884.

Abstract

The investigation of chemical constituents from the branches of Calophyllum inophyllum Linn led to the isolation of a new prenylated xanthone, named caloxanthone Q (1), together with three known compounds, 2-deprenylrheediaxanthone B (2), jacareubin (3), and 6-deoxyjacareubin (4). Their structures were completely elucidated on the basis of spectroscopic methods (UV, IR, HR-ESI-MS, 1D NMR, and 2D NMR).

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Calophyllum / chemistry*
  • Drugs, Chinese Herbal / chemistry
  • Drugs, Chinese Herbal / isolation & purification*
  • Humans
  • K562 Cells
  • Molecular Structure
  • Nuclear Magnetic Resonance, Biomolecular
  • Plant Stems / chemistry
  • Pyrans / chemistry
  • Pyrans / isolation & purification
  • Xanthenes / chemistry
  • Xanthenes / isolation & purification
  • Xanthones / chemistry
  • Xanthones / isolation & purification*

Substances

  • 5,10-dihydroxy-2,2-dimethylpyrano(3,2-b)xanthen-6(2H)-one
  • Drugs, Chinese Herbal
  • Pyrans
  • Xanthenes
  • Xanthones
  • caloxanthone Q