Aspergchromones A and B, two new polyketides from the marine sponge-associated fungus Aspergillus sp. SCSIO XWS03F03

J Asian Nat Prod Res. 2017 Jul;19(7):684-690. doi: 10.1080/10286020.2016.1231673. Epub 2016 Sep 26.

Abstract

Two new polyketides, aspergchromones A (1) and B (2), together with five known compounds, secalonic acid D (3), noreugenin (4), (3S)-5-hydroxymellein (5), (4S)-6-hydroxyisosclerone (6), and (-)-regiolone (7), were isolated from the ethyl acetate extract of marine sponge-derived fungus Aspergillus sp. SCSIO XWS03F03. Their structures were elucidated by means of spectroscopic techniques (1D and 2D NMR, MS, UV, and IR). The absolute configurations of the new compounds were established by ECD calculations. Compound 3 showed moderate antimicrobial activity.

Keywords: Aspergillus sp. SCSIO XWS03F03; antimicrobial; polyketides.

MeSH terms

  • Animals
  • Aspergillus / chemistry*
  • Marine Biology
  • Microbial Sensitivity Tests
  • Molecular Structure
  • Nuclear Magnetic Resonance, Biomolecular
  • Polyketides / chemistry
  • Polyketides / isolation & purification*
  • Porifera / microbiology*
  • Xanthones / chemistry
  • Xanthones / isolation & purification*

Substances

  • Polyketides
  • Xanthones
  • aspergchromone A
  • aspergchromone B
  • secalonic acid