Reinvestigation of the 4-methoxy-2,6-dimethylbenzenesulphonyl (Mds) protecting group for the guanidino-function during peptide synthesis
Abstract
The procedure for the synthesis of Z-Arg(Mds)-OH yields, in addition to the title compound, three products that have analogues of the Mds group on the guanidino-function making characterization of protected intermediate peptides difficult.