Cu-Catalyzed Formation of Triazole-Linked Glycoamino Acids and Application in Chemoenzymatic Peptide Synthesis
作者:Brian H. M. Kuijpers、Stan Groothuys、Christine Hawner、Jeroen ten Dam、Peter J. L. M. Quaedflieg、Hans E. Schoemaker、Floris L. van Delft、Floris P. J. T. Rutjes
DOI:10.1021/op700249f
日期:2008.5.1
Novel stable triazole-linked glycoamino acids have been prepared, with the heterocyclic moiety being established by efficient Cu-mediated cycloaddition between the corresponding azido and acetylene moieties. Selected reactions were scaled up and successfully subjected to chemoenzymatic peptide-coupling reactions involving the proteolytic enzyme alcalase, resulting in several glycosylated di- and tripeptide structures. Since chemoenzymatic approaches have several advantages over chemical peptide coupling, especially concerning large-scale peptide synthesis, these results may be regarded as initial steps in the direction of production via fully chemoenzymatic peptide synthesis.
Chemoenzymatic Synthesis of Triazole-Linked Glycopeptides
作者:Floris Rutjes、Stan Groothuys、Brian Kuijpers、Peter Quaedflieg、Harlof Roelen、Roel Wiertz、Richard Blaauw、Floris van Delft
DOI:10.1055/s-2006-942509
日期:——
Triazole-linked glycopeptides are prepared by C-terminal elongation of glycoamino acids with proteinogenic amino acids following a chemical or enzymatic coupling protocol. Two orthogonal routes for a chemoenzymatic strategy were explored, involving a click-reaction before amide bond formation or in reverse order. It was found that enzymatic peptide coupling under the influence of alcalase proceeds cleanly and in high yields, while the resulting dipeptides can be efficiently clicked to acetylene- or azide-containing sugars.