N-hydroxypyridine-2(1H)-thione derivatives of carboxylic acids as activated esters. Part II. Applications in peptide synthesis

Article abstract of DOI:10.1016/0040-4020(96)00488-7

The N-hydroxypyridine-2(1H)-thione derivatives of two urethane-protected α-amino acids readily reacted with the α-amino acid esters or the corresponding benzenesulfenamides to give simple dipeptides in reasonable yields. The benzenesulfenamides are the re