Peptide 2-formylthiophenol esters do not proceed through a Ser/Thr ligation pathway, but participate in a peptide aminolysis to enable peptide condensation and cyclization.


Peptide thiol salicylaldehyde (SAL) esters unexpectedly do not follow a Ser/Thr ligation pathway to react with peptides containing N-terminal Ser/Thr, but proceed towards a peptide aminolysis in DMSO. The reaction takes place even at a low substrate concentration (1 mM). The method has been successfully used to synthesize several natural cyclic peptides… (More)
DOI: 10.1039/c5ob00825e


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