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pubmed:abstractText |
The design, synthesis and biological activity of non-covalent thrombin inhibitors incorporating 4,5,6,7-tetrahydroindazole, 2-methyl-4,5,6,7-tetrahydroindazole, 4,5,6,7-tetrahydroisoindole, 5,6,7,8-tetrahydroquinazoline and 5,6,7,8-tetrahydroquinazolin-2-amine as novel, partially saturated, heterobicyclic P(1)-arginine side-chain mimetics is described. The binding mode of the most potent candidate in the series co-crystallized with human alpha-thrombin, which exhibited an in vitro K(i) of 140nM and more that 478-fold selectivity against trypsin, is discussed.
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