New Proline Mimetics: Synthesis of Thrombin Inhibitors Incorporating Cyclopentane- and Cyclopentenedicarboxylic Acid Templates in the P2 Position. Binding Conformation Investigated by X-ray Crystallography
作者:Daniel Nöteberg、Jonas Brånalt、Ingemar Kvarnström、Marcel Linschoten、Djordje Musil、Jan-Erik Nyström、Guido Zuccarello、Bertil Samuelsson
DOI:10.1021/jm990557t
日期:2000.5.1
With the aim to prepare nonpeptidic thrombin inhibitors, the amino acids of the thrombin-inhibiting tripeptide chain D-Phe-Pro-Arg were replaced with isosteres. Arg was replaced with the more rigid P1 truncated p-amidinobenzylamine (Pab), Pro with either cyclopentane-1,2-dicarboxylic acid or cyclopentene-1,5-dicarboxylic acid, and D-Phe with a series of readily available lipophilic amines. One of the most potent compounds (25, pIC(50) = 6.01) in these series was cocrystallized with thrombin where the X-ray crystal structure provide insight to the structure-activity relationship (SAR).