Low-molecular alpha4beta7-Integrin Ligands This thesis focuses mainly on the syntheses of low-molecular alpha4-Integrin ligands mimicking the LDT-recognition sequence. The introduction of (methoxypyridyl)-substituted beta-amino acids should improve the pharmacological features. Provided that an amid bond can be substituted by an aromatic residue the N-terminal end was replaced with phenyl-, heterocyclic aryl acetic acid derivatives and aryl ethers. I focused mainly on the introduction of polar scaffolds such as 2-substituted thiophene-, pyrrole- and indole-acetic acids. Moreover, it could be shown that the transfer of the pharmacophoric groups to drug-like scaffolds such as 3,4-dihydro-1H-benzo[e][1,4]diazepine-2,5-dione-, 2H-benzo[b][1,4]oxazin-3(4H)-on- and 4 benzylmorpholin-2-on-derivatives yielded compounds with improved solubility. Furthermore, the amid bond between leucine and 3-amino-3-aryl-propionic acid was conformational restricted by a series of piperazine-based mimetics.
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Low-molecular alpha4beta7-Integrin Ligands This thesis focuses mainly on the syntheses of low-molecular alpha4-Integrin ligands mimicking the LDT-recognition sequence. The introduction of (methoxypyridyl)-substituted beta-amino acids should improve the pharmacological features. Provided that an amid bond can be substituted by an aromatic residue the N-terminal end was replaced with phenyl-, heterocyclic aryl acetic acid derivatives and aryl ethers. I focused mainly on the introduction of polar s...
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