Brominated and iodinated allylic substrates can be subjected to palladium‐catalyzedallylic alkylation of amino acid and peptide ester enolates. The incorporation of a vinylic halide functionality into the allylic substrate allows a direct modification of the allylated peptide via cross coupling chemistry.
Stereoselective Syntheses and Reactions of Stannylated Peptides
作者:Jan Deska、Uli Kazmaier
DOI:10.1002/anie.200700759
日期:2007.6.11
Highly Stereoselective Peptide Modifications through Pd-Catalyzed Allylic Alkylations of Chelated Peptide Enolates
作者:Jan Deska、Uli Kazmaier
DOI:10.1002/chem.200700084
日期:2007.7.16
Deprotonation of peptides in the presence of zinc chloride gives rise to highly reactive nucleophiles that can be subjected to palladium-catalyzed allylicalkylation reactions. Excellent diastereoselectivities are obtained that are nearly independent of the allylic substrate used. By using this protocol, highly functionalized side chains can also be incorporated in excellent yields and selectivities