| abstract |
This invention provides compounds of the formula : (I) wherein: X is a chemical bond, -CH2- or -C(O)-; R1 is alkyl, cycloalkyl, -CH2-cycloalkyl, pyridinyl, -CH2-pyridinyl, phenyl or benzyl; R2 is H, alkyl, cycloalkyl, -CH2-cycloalkyl, or perfluoroalkyl; R3 is H, halo, alkyl, perfluoroalkyl, alkoxy, cycloalkyl, -CH2-cycloalkyl, -NH2, or -NO2; R4 is optionally substituted phenyl, benzyl, benzyloxy, pyridinyl, or -CH2-pyridinyl, or the salt or ester forms thereof, as well as methods for using the compounds as inhibitors of plasminogen activator inhibitor-1 (PAI-1) and as therapeutic compositions for treating conditions resulting from fibrinolytic disorders such as deep vein thrombosis and coronary heart disease, and pulmonary fibrosis, and processes for their preparation. |