A novel ligation method for the synthesis of phosphopeptides and peptides is described, which utilises the inherent reactivity of a peptide bearing an N-terminal phosphoserine or phosphothreonine residue to facilitate amide bond formation with a range of C-terminal peptide thioesters.
Peptide Ligations Accelerated by <i>N</i>-Terminal Aspartate and Glutamate Residues
作者:Gemma L. Thomas、Yves S. Y. Hsieh、Candy K. Y. Chun、Zheng-Li Cai、Jeffrey R. Reimers、Richard J. Payne
DOI:10.1021/ol2017356
日期:2011.9.16
A novel application of intramolecular base catalysis confers enhanced reaction rates for aminolysis ligations between peptide thioesters and peptides bearing N-terminal aspartate or glutamate residues. The broad scope of this process and its application in the total synthesis of the diabetes drug exenatide is demonstrated.