Bi- and Tetracyclic Spirotetronates from the Coal Mine Fire Isolate Streptomyces sp. LC-6-2

J Nat Prod. 2017 Apr 28;80(4):1141-1149. doi: 10.1021/acs.jnatprod.7b00108. Epub 2017 Mar 30.

Abstract

The structures of 12 new "enantiomeric"-like abyssomicin metabolites (abyssomicins M-X) from Streptomyces sp. LC-6-2 are reported. Of this set, the abyssomicin W (11) contains an unprecedented 8/6/6/6 tetracyclic core, while the bicyclic abyssomicin X (12) represents the first reported naturally occurring linear spirotetronate. Metabolite structures were determined based on spectroscopic data and X-ray crystallography, and Streptomyces sp. LC-6-2 genome sequencing also revealed the corresponding putative biosynthetic gene cluster.

Publication types

  • Research Support, N.I.H., Extramural
  • Research Support, Non-U.S. Gov't

MeSH terms

  • Bridged Bicyclo Compounds, Heterocyclic / chemistry
  • Bridged Bicyclo Compounds, Heterocyclic / isolation & purification*
  • Coal
  • Crystallography, X-Ray
  • Molecular Conformation
  • Molecular Structure
  • Multigene Family
  • Nuclear Magnetic Resonance, Biomolecular
  • Spiro Compounds / chemistry
  • Spiro Compounds / isolation & purification*
  • Streptomyces / chemistry*
  • Streptomyces / genetics

Substances

  • Bridged Bicyclo Compounds, Heterocyclic
  • Coal
  • Spiro Compounds