This thesis describes the synthesis and analysis of the structure-activity relationship of conformational restrained, cyclic peptide ligands for tumor associated cell receptors (avb3-integrines, urokinase(uPA)- und somatostatin-receptors). By usage of cyclohexene-beta-amino acids, which were synthesized in a enantioselective manner, and linear beta-turn-mimetics bioactive cycles were obtained. Their defined 3D-structure were determined by NMR and modeling techniques. Moreover, for the synthesis of template peptides and functionalized ligands a number of trifunctional amino acids, cyclisation methods and concepts for fragment condensations on solid phase had to be worked out.
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This thesis describes the synthesis and analysis of the structure-activity relationship of conformational restrained, cyclic peptide ligands for tumor associated cell receptors (avb3-integrines, urokinase(uPA)- und somatostatin-receptors). By usage of cyclohexene-beta-amino acids, which were synthesized in a enantioselective manner, and linear beta-turn-mimetics bioactive cycles were obtained. Their defined 3D-structure were determined by NMR and modeling techniques. Moreover, for the synthesis...
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