| abstract |
Novel peptides of the formula in which R1 is C<1-7>-alkyl; R2 is C<1-4>-alkyl; X is C<1-5>-alkyl; R3 is C<1-4>-alkyl; B is C<1-5>-alkyl; D is C<1-5>-alkoxy; M is phenylalanyl; R4 is H; R5 is H, or benzyl, d is 0 or 1, and the preparation thereof are described. The novel substances have an antineoplastic effect. |