Abstract:
The present invention provides antitumor peptides of formula (I): A-B-NR -CHD-CH(OCH3)-CH2CO-E-K and the acid salts thereof. A is an amino acid residue selected from the group consisting of N-methyl-D-prolyl, N-methyl-D-homoprolyl and N, N-dimethyl-2 -ethylphenylglycyl, or an amino acid residue of the formula R R N-CHX-CO, wherein R is a methyl group or an ethyl group, R is a hydrogen atom, a methyl group or an ethyl group, and X is an alkyl group. B is an amino acid residue selected from the group consisting of valyl, isoleucyl, leucyl, and 2-t-butylglycyl. R is a hydrogen atom or a methyl group. D is a normal or branched C2-C5-alkyl group. E is an amino acid residue selected from the group consisting of prolyl, homoprolyl, 5-methylprolyl, and phenylalanyl, or E is a residue derived from an amino acid comprising a pyrrolidine group. K is an alkoxy group or an amino group. An additional embodiment of the present invention is a method for treating a malignancy in a mammal, such as a human, comprising administering to the mammal an effective amount of a compound or compounds of the formula (I) in a pharmaceutically acceptable composition.
Abstract:
Novel peptides of the following formula (I): R1R2N-CHX-CO-A-B-D-E-(G)¿s?-K in which R?1, R2¿, A, B, D, E, G, K, X, and s have the meanings stated in the description, and the preparation thereof are described. The novel peptides have an antineoplastic effect.
Abstract:
The present application relates to compounds of the fornula (VII), wherein the substituents R -R , X and Y are as defined in the description and to compounds of formula (VIII) or formula (IX) and when R is in the ortho position to X, R and R are taken together with the atoms to which are each attached to form an aromatic heterocyclic ring. The application further relates to polypeptides which comprise the ligand binding domain of Cdc25, crystalline forms of these polypeptides and the use of these crystalline forms to determine the three dimensional structure of the catalytic domain of Cdc25. The invention also relates to the use of the three dimensional structure of the Cdc25 catalytic domain in methods of designing and/or identifying potential inhibitors of Cdc25 activity, for example, compounds which inhibit the binding of a native substrate to the Cdc25 catalytic domain.
Abstract:
The present invention relates to polypeptides which comprise the ligand binding domain of Cdc25, crystalline forms of these polypeptides and the use of these crystalline forms to determine the three dimensional structure of the catalytic domain of Cdc25. The invention also relates to the use of the three dimensional structure of the Cdc25 catalytic domain in methods of designing and/or identifying potential inhibitors of Cdc25 activity, for example, compounds which inhibit the binding of a native substrate to the Cdc25 catalytic domain.
Abstract:
The present invention provides compounds of formula (I) where R1-R5 are each, independently, a hydrogen atom or a normal or branched C1-C6-alkyl group; A is a methionyl, phenylalanyl or phenylglycyl residue; n is 0 or 1; R6 is a hydrogen atom; and R7 is a carbocyclic group, an aromatic group, a C1-C4-alkyl group, a pyridylalkyl group or a heterocyclic group. In another embodiment, R6 is benzyl or -C(O)OR8, where R8 is a C1-C6-alkyl group, and R7 is a heteroaromatic group, such as a 2-thiazolyl group.
Abstract:
The invention relates to peptidic substances, to the production of said substances and to their use as complement inhibitors. In particular, the invention relates to substances with a guanidine or amidine radical as the terminal group, especially inhibitors of the complement proteases C1s and C1r.
Abstract:
Peptides derived from TNF, of formula (I): X-A-Gly-Asp-Y, in which A X and Y have the meanings given in the description. Process for producing them. The novel peptides are useful therapeutic agents.
Abstract:
The present invention provides antitumor peptides of formula (I): A-B-NR3-CHD-CH(OCH¿3?)-CH2CO-E-K and the acid salts thereof. A is an amino acid residue selected from the group consisting of N-methyl-D-prolyl, N-methyl-D-homoprolyl and N, N-dimethyl-2 -ethylphenylglycyl, or an amino acid residue of the formula R?1R2¿N-CHX-CO, wherein R1 is a methyl group or an ethyl group, R2 is a hydrogen atom, a methyl group or an ethyl group, and X is an alkyl group. B is an amino acid residue selected from the group consisting of valyl, isoleucyl, leucyl, and 2-t-butylglycyl. R3 is a hydrogen atom or a methyl group. D is a normal or branched C¿2?-C5-alkyl group. E is an amino acid residue selected from the group consisting of prolyl, homoprolyl, 5-methylprolyl, and phenylalanyl, or E is a residue derived from an amino acid comprising a pyrrolidine group. K is an alkoxy group or an amino group. An additional embodiment of the present invention is a method for treating a malignancy in a mammal, such as a human, comprising administering to the mammal an effective amount of a compound or compounds of the formula (I) in a pharmaceutically acceptable composition.
Abstract:
The description relates to a process for producing pentapeptides of the formula (I) in which A and R1-R3 have the meanings given, in which the pentapeptide is constructed in steps from a prolinamide of the formula (II) in which R1 and R2 have the meanings given above, and the group -NR1R2 may be hydrolytically separated from the peptide thus obtained.
Abstract:
The invention relates to inhibitors of the cellular growth and to their adjunctive to acid salts which are peptides with the formula A - B - D - E - F - (G)r - (K)s - L (I) where A, B, D, E, F, G. and K are -aminoacid residues and s and r are, individually, 0 or 1. L is univalent radical, such as aminogroup, N-substituted aminogroup, beta-hydroxyaminogroup, beta-hydroxyaminogroup, hydrasidogroup, alkoxygroup, thioalkoxygroup, aminooxygroup or oximatogroup. The invention also relates to a method for the treatment of cancer in mammals, including humans which includes the administration of an effective quantity of the above compound in a pharmaceutically acceptable composition.