Abstract
Using model peptide β-hairpin scaffolds, the facile formation of a remarkably stable covalently cross-linked modification is reported in the tryptophan side chain, which confers hyperstability to the scaffold and displays a unique structure-reactivity relationship. This strategy is also validated to obtain a thermostable α-helix. Such imposition of conformational constraints can have versatile applications in peptide-based drug discovery, and this strategy may improve peptide bioavailability.
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