Issue 93, 2017

Fluorogenic diazaborine formation of semicarbazide with designed coumarin derivatives

Abstract

Bioorthogonal fluorogenic reactions serve as enabling tools in research and biotechnology. Herein we describe fluorogenic conjugations of semicarbazide with coumarin derivatives that incorporate a 2-acetylphenylboronic acid motif. These designed coumarins rapidly conjugate with semicarbazide to give diazaborine products with significantly enhanced fluorescence. To demonstrate potential applications of this fluorogenic reaction, we synthesized a semicarbazide-presenting amino acid D-Dap-Scz, which readily incorporates into the cell wall of Staphalococcus aureus and serves as a handle for conjugation with the coumarins. The fluorogenic conjugation of the coumarins to cell surface semicarbazide enables facile visualization of D-Dap-Scz treated bacteria.

Graphical abstract: Fluorogenic diazaborine formation of semicarbazide with designed coumarin derivatives

Supplementary files

Article information

Article type
Communication
Submitted
21 Sep 2017
Accepted
24 Oct 2017
First published
24 Oct 2017

Chem. Commun., 2017,53, 12532-12535

Fluorogenic diazaborine formation of semicarbazide with designed coumarin derivatives

S. Cambray, A. Bandyopadhyay and J. Gao, Chem. Commun., 2017, 53, 12532 DOI: 10.1039/C7CC07389E

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