Selectively Activatable Latent Thiol and Selenolesters
Simplify the Access to Cyclic or Branched Peptide Scaffolds
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Abstract
The
cyclic dichalcogenides based on the bis(2-chalcogenoethyl)amide structure
are latent <i>N</i>,<i>S</i> (SEA, chalcogen =
S) or <i>N</i>,<i>Se</i> (SeEA, chalcogen = Se)
acyl shift systems. The large difference in the reducing potential
between SEA and SeEA dichalcogenides allows their sequential and selective
activation by reduction. Based on these concepts, one-pot three or
four peptide segment assembly processes were designed, facilitating
access to branched or cyclic peptide scaffolds