Conjugates 6 and 7 of cancer peptide antigen with N-tetradecanoyl L-serine-
beta-alanine-containing D-glucosamine derivative structurally related to li
pid A as an immunoadjuvant were synthesized for the development of totally
synthetic vaccines against cancers, The mitogenic activities of compounds 6
and 7 were stronger than that of lipid A analog 3.