| abstract |
This invention provides compounds of the formula: n n n n n n n n n n wherein: X is a chemical bond, —CH 2 — or —C(O)—; R 1 is alkyl, cycloalkyl, —CH 2 — cycloalkyl, pyridinyl, —CH 2 -pyridinyl, phenyl or benzyl; R 2 is H, alkyl, cycloalkyl, —CH 2 -cycloalkyl, or perfluoroalkyl; R 3 is H, halo, alkyl, perfluoroalkyl, alkoxy, cycloalkyl, —CH 2 -cycloalkyl, —NH 2 , or —NO 2 ; R 4 is optionally substituted phenyl, benzyl, benzyloxy, pyridinyl, or —CH 2 -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. |