Peptide compounds having improved binding affinity to...

Chemistry: natural resins or derivatives; peptides or proteins; – Peptides of 3 to 100 amino acid residues – Somatostatin ; related peptides

Reexamination Certificate

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Reexamination Certificate

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07122622

ABSTRACT:
The invention relates to a peptide compound having an improved binding affinity to somatostatin receptors, comprising a somatostatin analogue as the peptide and a chelating group covalently linked to the N-terminal free amino group of said peptide, wherein said somatostatin analogue carries an 1-naphthylalanine or a 3-benzothienylalanine residue in its 3-position. The invention further relates to said peptide compound labeled with a detectable element or with a therapeutic radionuclide, as well as to a diagnostic method and to a method for the therapeutic treatment of tumors, by using the labeled compounds.

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