New thiochromane derivatives and their use as thrombin inhibitors

摘要

There is provided compounds of formulae I and IAwherein Y, R<1>, R<2>, R<3>, D<1 >and D<2 >have meanings given in the description which are useful as, or as prodrugs of, competitive inhibitors of trypsin-like proteases, such as thrombin, and in particular in the treatment of conditions where inhibition of thrombin is required (e.g. thrombosis) or as anticoagulants.