for the preparation of N4-dialkyl-L-asparegine and N5-dialkyl-L-glutamine derivatives is described. The applicability of these derivatives in the preparation of related peptides is illustrated by the syntheses of N2 - carbobenzoxy - (N4 -dimethyl) - L - asparaginyl - (S - benzyl) - L - cysteinyl - L -prolyl - L - leucylglycine amide and N2- carbobenzoxy - (N5 -dimethyl) - L - gtutaminyl - L - asparaginyl
Cadystin a and b, major unit peptides comprising cadmium binding peptides induced in a fission yeast ----- separation, revision of structures and synthesis