Tc or re radiolabelled somatostatin analogs

C - Chemistry – Metallurgy – 07 – K

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Details

C07K 14/655 (2006.01) A61K 51/08 (2006.01) C07K 17/06 (2006.01)

Patent

CA 2202382

Technetium or rhenium radionuclide labelled chelate-hexapeptide complexes are useful for the selective detection or treatment of tumors with somatostatin receptors. In particular, the hexapeptide of formula (I) (wherein R3 is as defined herein) may be attached to an N3S2 chelate and labelled with a radionuclide. The resulting complex is useful as a radioimaging agent or as a radiopharmaceutical for the treatment of certain tumors.

La présente invention concerne des complexes chélate / hexapeptide radiomarqués au technétium ou au rhénium, utilisés pour la détection sélective ou le traitement des tumeurs à récepteurs de somatostatine. En l'occurrence, l'hexapeptide représenté par la formule générale (I) et dans lequel R?3¿ est conforme à la définition donnée dans la description, peut être lié à un chélate N3S2 et marqué par un radionucléide. Le complexe obtenu est utile comme agent de radioimagerie ou comme produit radiopharmaceutique pour le traitement de certaines tumeurs.

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