
%0 Journal Article
%A Stewart, FHC 
%T The preparation of some sequential polypeptides by the p-Nitrophenyl ester method
%J Australian Journal of Chemistry
%D 1966/08/01
%V 19
%N 8
%P 1503-1509
%K 
%R https://doi.org/10.1071/CH9661503
%U https://www.publish.csiro.au/paper/CH9661503 
%X A number of sequential polypeptides have been obtained by polymerization of peptide p-nitrophenyl esters. The majority of the products contained &#947;-ethyl-L-glutamyl and S-benzyl-L-cysteinyl residues in various proportions. The active ester monomers were synthesized by the mixed carbonic anhydride procedure using p-nitrophenyl as a carboxyl-protecting group. Some of the limitations of this approach are discussed. 
