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  • Title: Design, synthesis and biological evaluation of selective boron-containing thrombin inhibitors.
    Author: Wienand A, Ehrhardt C, Metternich R, Tapparelli C.
    Journal: Bioorg Med Chem; 1999 Jul; 7(7):1295-307. PubMed ID: 10465405.
    Abstract:
    Based on the structural comparison of the S-1 pocket in different trypsin-like serine proteases, a series of Boc-D-trimethylsilylalanine-proline-boro-X pinanediol derivatives, with boro-X being different amino boronic acids, have been synthesised as inhibitors of thrombin. The influence of hydrogen donor/acceptor properties of different residues in the P-1 side chain of these inhibitors on the selectivity profile has been investigated. This study confirmed the structure-based working hypothesis: The hydrophobic/hydrophilic character of amino acid residues 190 and 213 in the neighbourhood of Asp 189 in the S-1 pocket of thrombin (Ala/Val), trypsin (Ser/Val) and plasmin (Ser/Thr) define the specificity for the interaction with different P-1 residues of the inhibitors. Many of the synthesised compounds demonstrate potent antithrombin activity with Boc-D-trimethylsilylalanine-proline-boro-methoxypropylglycine++ + pinanediol (9) being the most selective thrombin inhibitor of this series.
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