1,2-Diborolanes with strong donor substituents: Synthesis and high antimicrobial activity

Bioorg Chem. 2021 Jan:106:104494. doi: 10.1016/j.bioorg.2020.104494. Epub 2020 Nov 21.

Abstract

1,2-diborolanes with strong and without strong donor substituents have been described, and are also referred to as 1,2-diboracyclopentane. The 1,2-diaryl/alkyl-amino-1,2-diboracyclopentanes 2, 3, and 4 were obtained in good yield after the reaction of 1,2-dichloro-1,2-diboracyclopentane 1 with ArNHLi and Me3Si-NR2. The structures of these new derivatives were characterized by nuclear magnetic resonance spectroscopy. The molecular structures of 2b, 2c, 2e, 4, and 5f were also determined by single-crystal X-ray diffraction. The newly synthesized 1,2-borolanes are stable in air and showed particularly high activity against some Gram-positive bacteria.

Keywords: Antimicrobial; Diboracyclopentane; Diborolane; Heterocycles.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Anti-Bacterial Agents / chemical synthesis
  • Anti-Bacterial Agents / chemistry
  • Anti-Bacterial Agents / pharmacology*
  • Boron Compounds / chemical synthesis
  • Boron Compounds / chemistry
  • Boron Compounds / pharmacology*
  • Dose-Response Relationship, Drug
  • Gram-Positive Bacteria / drug effects*
  • Microbial Sensitivity Tests
  • Molecular Structure
  • Structure-Activity Relationship

Substances

  • Anti-Bacterial Agents
  • Boron Compounds