
%0 Journal Article
%A Stewart, FHC 
%T Synthesis of &#969;-amino acid peptides related to leucine-enkephalin
%J Australian Journal of Chemistry
%D 1981/11/01
%V 34
%N 11
%P 2439-2447
%K 
%R https://doi.org/10.1071/CH9812439
%U https://www.publish.csiro.au/paper/CH9812439 
%X Syntheses are described of four peptides with modified leucine-enkephalin sequences in which the native glycylglycyl segment is replaced by an &#969;-amino acid residue. o-Nitrophenylthio-&#969;-amino acids were used as intermediates, and it was found that the derivatives of 4-aminobutyric and 5-amino-valeric acids undergo facile intramolecular cyclization under the influence of N,N'-dicyclohexylcarbodiimide. 
