Dolastatin-derived peptides and their salts Pharmaceutical composition process for treating a tumor in a mammal and process for preparing peptides derived from dolastatin or its salts

摘要

Novel compounds of the formulaR1R2N-CHX-CO-A-B-D-(E)s-(F)t-(G)U-KIin which R1, R2, A, B, D, E, F, G, K, X, s, t, and u have the meanings stated in the description, and the preparation thereof are described. The novel substances have an antineoplastic effect.