| abstract |
Compounds of the invention are useful in inhibiting thrombin and associated thrombotic occlusions having the structure (I) or a pharmaceutically acceptable salt thereof, wherein b is NY1 or O; c is CY2 or N; d is CY3 or N; e is CY4 or N; f is CY5 or N; g is CY6 or N; Y?4, Y5, and Y6¿ are independently hydrogen, C¿1-4? alkyl, or halogen; Y?1 and Y2¿ are independently hydrogen, C¿1-4? alkyl, C3-7 cycloalkyl, halogen, NH2, OH or C1-4 alkoxy, and Y?3¿ is hydrogen, C¿1-4? alkyl, C3-7 cycloalkyl, halogen, -CN, NH2, OH or C1-4 alkoxy; A is (II), (III), (IV), (V) or (VI); and W, W?1, R1, R3, R4, R5¿, X and Z are defined in the specification. |