De Novo Access to BODIPY C-Glycosides as Linker-Free Nonsymmetrical BODIPY-Carbohydrate Conjugates

J Org Chem. 2024 Mar 15;89(6):4042-4055. doi: 10.1021/acs.joc.3c02907. Epub 2024 Mar 4.

Abstract

Recent years have witnessed an increasing interest in the synthesis and study of BODIPY-glycoconjugates. Most of the described synthetic methods toward these derivatives involve postfunctional modifications of the BODIPY core followed by the covalent attachment of the fluorophore and the carbohydrate through a "connector". Conversely, few de novo synthetic approaches to linker-free carbohydrate-BODIPY hybrids have been described. We have developed a reliable modular, de novo, synthetic strategy to linker-free BODIPY-sugar derivatives using the condensation of pyrrole C-glycosides with a pyrrole-carbaldehyde derivative mediated by POCl3. This methodology allows labeling of carbohydrate biomolecules with fluorescent-enough BODIPYs within the biological window, stable in aqueous media, and able to display singlet oxygen generation.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Boron Compounds*
  • Glycosides*
  • Pyrroles

Substances

  • C-glycoside
  • 4,4-difluoro-4-bora-3a,4a-diaza-s-indacene
  • Glycosides
  • Boron Compounds
  • Pyrroles