Marchiori F, Borin G, Filippi B, Moretto V, Bonora G M, Toniolo C
Int J Pept Protein Res. 1979 Aug;14(2):143-52.
The synthesis of peptides containing blocks of arginyl residues is proposed through amidination of the corresponding ornithyl analogs. In order to test this strategy the ornithyl analog of the C-terminal sequence 52--65 of galline was synthesized by the conventional method. The amidination reaction, performed on fragments of different length and ornithyl-residue content, quantitatively converts ornithines into arginines. The strategy proposed may represent a powerful tool for the synthesis of protamines and other basic proteins.