Baraphenazines A-G, Divergent Fused Phenazine-Based Metabolites from a Himalayan Streptomyces

J Nat Prod. 2019 Jun 28;82(6):1686-1693. doi: 10.1021/acs.jnatprod.9b00289. Epub 2019 May 22.

Abstract

The structures and bioactivities of three unprecedented fused 5-hydroxyquinoxaline/alpha-keto acid amino acid metabolites (baraphenazines A-C, 1-3), two unique diastaphenazine-type metabolites (baraphenazines D and E, 4 and 5) and two new phenazinolin-type (baraphenazines F and G, 6 and 7) metabolites from the Himalayan isolate Streptomyces sp. PU-10A are reported. This study highlights the first reported bacterial strain capable of producing diastaphenazine-type, phenazinolin-type, and izumiphenazine A-type metabolites and presents a unique opportunity for the future biosynthetic interrogation of late-stage phenazine-based metabolite maturation.

Publication types

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

MeSH terms

  • Anti-Bacterial Agents / chemistry
  • Anti-Bacterial Agents / metabolism*
  • Molecular Structure
  • Phenazines / chemistry
  • Phenazines / metabolism*
  • Quinoxalines / chemistry*
  • Streptomyces / chemistry*

Substances

  • Anti-Bacterial Agents
  • Phenazines
  • Quinoxalines