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Iminoboronate-Based Peptide Cyclization That Responds to pH, Oxidation, and Small Molecule Modulators.


ABSTRACT: As a rich source of therapeutic agents, peptide natural products usually adopt a cyclic or multicyclic scaffold that minimizes structural flexibility to favor target binding. Inspired by nature, chemists have been interested in developing synthetic cyclic and multicyclic peptides that serve as biological probes and potential therapeutics. Herein we describe a novel strategy for peptide cyclization in which intramolecular iminoboronate formation allows spontaneous cyclization under physiologic conditions to yield monocyclic and bicyclic peptides. Importantly the iminoboronate-based cyclization can be rapidly reversed in response to multiple stimuli, including pH, oxidation, and small molecules. This highly versatile strategy for peptide cyclization should find applications in many areas of chemical biology.

SUBMITTER: Bandyopadhyay A 

PROVIDER: S-EPMC4842000 | biostudies-literature | 2016 Feb

REPOSITORIES: biostudies-literature

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Iminoboronate-Based Peptide Cyclization That Responds to pH, Oxidation, and Small Molecule Modulators.

Bandyopadhyay Anupam A   Gao Jianmin J  

Journal of the American Chemical Society 20160212 7


As a rich source of therapeutic agents, peptide natural products usually adopt a cyclic or multicyclic scaffold that minimizes structural flexibility to favor target binding. Inspired by nature, chemists have been interested in developing synthetic cyclic and multicyclic peptides that serve as biological probes and potential therapeutics. Herein we describe a novel strategy for peptide cyclization in which intramolecular iminoboronate formation allows spontaneous cyclization under physiologic co  ...[more]

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