Exploration of Potential Prodrugs of RWJ-445167, an Oxyguanidine-based Dual Inhibitor of Thrombin and Factor Xa
2006
Compound 2 (RWJ-445167; 3DP-10017), a dual inhibitor of thrombin and factor Xa, was advanced into human clinical studies. However, its oral bioavailability in humans proved to be below acceptable limits. To address this issue, we explored a prodrug approach involving numerous guanidine derivatives. Prodrug candidates of classes A (carbamate derivatives), B (imidate derivatives), and C (alkyl and acyl derivatives), compounds 3–6, were synthesized and evaluated for anticoagulant activity at 2h after oral administration to rats. In comparison to the parent drug (2), little worthwhile improvement was observed for the prodrug candidates.
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