1H and 13C NMR assignments for two oxaphenalenones bacillosporin C and D from the mangrove endophytic fungus SBE-14

Magn Reson Chem. 2007 May;45(5):439-41. doi: 10.1002/mrc.1976.

Abstract

The complete (1)H and (13)C NMR assignments are reported for the novel natural product Bacillosporin D together with the known compound Bacillosporin C. These compounds containing seven rings were isolated from the mangrove endophytic fungus SBE-14 from the South China Sea. 1D and 2D NMR experiments, including COSY, HMQC and HMBC were used to the determination of the structures and NMR assignments. It is proposed that 1 was biogenetically produced by transforming 2. Transforming a lactone to an anhydride is unusual in nature.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Carbon Isotopes
  • China
  • Fungi / chemistry*
  • Heterocyclic Compounds, 4 or More Rings / chemistry*
  • Magnetic Resonance Spectroscopy
  • Oceans and Seas
  • Phenalenes / chemistry*
  • Protons

Substances

  • Carbon Isotopes
  • Heterocyclic Compounds, 4 or More Rings
  • Phenalenes
  • Protons
  • bacillosporin C
  • bacillosporin D
  • phenalen-1-one