Bioactive triterpenes from Diospyros blancoi

Nat Prod Res. 2009;23(13):1252-8. doi: 10.1080/14786410902951054.

Abstract

The ethyl acetate extract of the air-dried leaves of Diospyros blancoi afforded isoarborinol methyl ether (1), a mixture of alpha-amyrin palmitate, alpha-amyrin palmitoleate, beta-amyrin palmitate and beta-amyrin palmitoleate (2) in a 13 : 4 : 3 : 1 ratio, and squalene. The structures of 1, 2 and squalene were elucidated by extensive 1D and 2D NMR spectroscopy. Compounds 1 and 2 exhibited antimicrobial activity against Escherichia coli, Pseudomonas aeruginosa, Candida albicans, Staphylococcus aureus and Trichophyton mentagrophytes, and were found inactive against Bacillus subtilis and Aspergillus niger. Sample 2 exhibited significant analgaesic and anti-inflammatory activities.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Anti-Infective Agents / chemistry*
  • Anti-Infective Agents / pharmacology*
  • Aspergillus niger / drug effects
  • Bacillus subtilis / drug effects
  • Bacteria / drug effects*
  • Candida albicans / drug effects
  • Diospyros / chemistry*
  • Escherichia coli / drug effects
  • Fungi / drug effects*
  • Microbial Sensitivity Tests
  • Molecular Structure
  • Staphylococcus aureus / drug effects
  • Trichophyton / drug effects
  • Triterpenes / chemistry*
  • Triterpenes / pharmacology*

Substances

  • Anti-Infective Agents
  • Triterpenes