Terezine derivatives from the fungus Phoma herbarum PSU-H256

Phytochemistry. 2016 Feb:122:223-229. doi: 10.1016/j.phytochem.2015.11.009. Epub 2015 Nov 27.

Abstract

Investigation of the fungus Phoma herbarum PSU-H256 isolated from a leaf of Hevea brasiliensis resulted in the isolation of eight terezine derivatives (E-L) together with four known compounds. Their structures were established by analysis of spectroscopic evidence. For terezines E and H, their structures were confirmed by single-crystal X-ray diffraction crystallography. In addition, the absolute configuration at C-7 in terezine E was established by Mosher's method. Terezines K and L were tested for antibacterial, antimalarial, antimycobacterial and cytotoxic activities, but were inactive.

Keywords: Euphorbiaceae; Hevea brasiliensis; Phoma herbarum; Pyrazine; Pyrazinone.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Ascomycota / chemistry*
  • Crystallography, X-Ray
  • Molecular Structure
  • Oligopeptides
  • Pyrazines / chemistry
  • Pyrazines / isolation & purification

Substances

  • Oligopeptides
  • Pyrazines
  • terezine A
  • terezine E
  • terezine K
  • terezine L
  • H 256