Journal
JOURNAL OF ORGANIC CHEMISTRY
Volume 72, Issue 12, Pages 4574-4577Publisher
AMER CHEMICAL SOC
DOI: 10.1021/jo0704513
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This paper describes an optimized protocol for the efficient loading of resin-bound aminoethane sulfonyl azides by either Boc- or Fmoc-protected amino thioacids. The resulting N-acyl sulfonamide is a convenient linker for use in Boc- or Fmoc-based solid-phase peptide synthesis. Activation of the N-acyl sulfonamide via a microwave-assisted alkylation procedure and subsequent treatment with functionalized nucleophiles yields C-terminally modified peptides that can be applied in chemoselective (bio)conjugation or ligation reactions.
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