abstract |
(57) SUMMARY The compounds of the present invention are useful for inhibiting thrombin and related thrombotic occlusions and have the structure (I) or (II). Wherein Y 1 and Y 2 are independently selected from the group consisting of hydrogen, C 1-4 alkyl, C 1-4 alkoxy, C 3-7 cycloalkyl, halogen and trifluoromethyl; A is (III) , (IV), (V) or (VI). Embedded image |