Bradykinin type peptides

C - Chemistry – Metallurgy – 07 – K

Patent

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Details

C07K 7/18 (2006.01) A61K 38/08 (2006.01) C07D 207/12 (2006.01) A61K 38/00 (2006.01)

Patent

CA 2106768

The substitution of the L-Pro at the 7-position with D-Phe or D-Tic and substitution of the L-Phe at the 8-position with hydroxyproline ethers and thioethers of the peptide hormone bradykinin and other additional substituted analogs of bradykinin converts bradykinin agonists into bradykinin antagonists. The invention further provides additional modifications at other positions within the novel 7- and 8-position modified bradykinin antagonists, which increase enzyme resistance, antagonist potency, and/or specificity of the new bradykinin antagonists. The analogs produced are useful in treating conditions and diseases of a mammal and human in which an excess of bradykinin or related kinins are produced or injected as by insect bites.

Le remplacement du L-Pro à la position 7 par D-Phe ou D-Tic et le remplacement de L-Phe à la position 8 par des éthers d'hydroxyproline et des thioéthers de bradykinine et d'autres analogues substitués de bradykinine transforme les agonistes de la bradykinine en antagonistes de la bradykinine. L'invention porte également sur d'autres modifications, en d'autres positions des antagonistes de bradykinine modifiés en position 7 et 8, qui renforcent la résistance aux enzymes, la puissance antagoniste et/ou la spécificité des nouveaux antagonistes de bradykinine. Les analogues obtenus sont utiles pour le traitement des états pathologiques chez les mammifères et chez l'être humain souffrant d'un excès de bradykinine ou de kinines voisines induit, par exemple, par une piqûre d'insecte.

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