enzymatic approaches for the conversion of semi-protected aminoacid and peptidyl C-terminal α-carboxylic acids into their corresponding amides. In the first approach, the lipase Candida antarctica lipase-B (Cal-B), and in the second approach, the protease Subtilisin A, are used, respectively. We found that by using the ammonium salt of the α-carboxylic acid instead of separate ammonia sources, the enzymatic
Fully Enzymatic N→C-Directed Peptide Synthesis Using C-Terminal Peptide α-Carboxamide to Ester Interconversion
作者:Timo Nuijens、Elena Piva、John A. W. Kruijtzer、Dirk T. S. Rijkers、Rob M. J. Liskamp、Peter J. L. M. Quaedflieg
DOI:10.1002/adsc.201000943
日期:2011.5.9
Chemoenzymatic peptidesynthesis is potentially the most cost‐efficient technology for the synthesis of short and medium‐sized peptides with some important advantages. For instance, stoichiometric amounts of expensive coupling reagents are not required and racemisation does not occur rendering purification easier compared to chemical peptidesynthesis. In this paper, a novel interconversion reaction