Abstract: Compounds of formula (I) and II) are provided wherein: X is an alkali metal or a basic amine moiety; R1 is alkyl, cycloalkyl, —CH2-cycloalkyl, pyridinyl, —CH2-pyridinyl, phenyl or benzyl, the rings of these groups being optionally substituted; R2 is H, halogen, alkyl, perfluoroalkyl, alkoxy, cycloalkyl, —CH2-cycloalkyl, —NH2, or —NO2; R3 is phenyl, benzyl, benzyloxy, pyridinyl, or —CH2-pyridinyl, with the rings of these groups being optionally substituted; or a pharmaceutically acceptable salt or ester form thereof, as well as pharmaceutical compositions and methods using these 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.

Abstract: This invention provides compounds of the formula: 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.