Modular Chemoenzymatic Synthesis of GE81112 B1 and Related Analogues Enables Elucidation of Its Key Pharmacophores

J Am Chem Soc. 2021 Jan 27;143(3):1673-1679. doi: 10.1021/jacs.0c13424. Epub 2021 Jan 8.

Abstract

The GE81112 complex has garnered much interest due to its broad antimicrobial properties and unique ability to inhibit bacterial translation initiation. Herein we report the use of a chemoenzymatic strategy to complete the first total synthesis of GE81112 B1. By pairing iron and α-ketoglutarate dependent hydroxylases found in GE81112 biosynthesis with traditional synthetic methodology, we were able to access the natural product in 11 steps (longest linear sequence). Following this strategy, 10 GE81112 B1 analogues were synthesized, allowing for identification of its key pharmacophores. A key feature of our medicinal chemistry effort is the incorporation of additional biocatalytic hydroxylations in modular analogue synthesis to rapidly enable exploration of relevant chemical space.

Publication types

  • Research Support, N.I.H., Extramural

MeSH terms

  • Anti-Bacterial Agents / chemical synthesis*
  • Biocatalysis
  • Hydroxylation
  • Mixed Function Oxygenases / chemistry*
  • Oligopeptides / chemical synthesis*

Substances

  • Anti-Bacterial Agents
  • Oligopeptides
  • Mixed Function Oxygenases