| abstract |
The present invention provides a compound of Formula (I) n n n n n n n n n n whereinn R 1 is H or C 1-6 alkyl, R 2 , is H or C 1-6 alkyl or CH 2 OH, R 3 is H or C 1-6 alkyl, and R 4 is H or C 1-6 alkyl, provided that when R 1 , R 2 , and R 3 are H, R 4 is C 1-6 alkyl, and when R 1 , R 2 , and R 4 are H, then R 3 is C 1-6 alkyl, and when R 1 , R 3 , and R 4 are H, R 2 is C 1-6 alkyl or —CH 2 OH, and when R 2 , R 3 , and R 4 are H, then R 1 is C 1-6 alkyl; A isn 1) a 9-10 membered bicyclic heterocycle having 1-3 heteroatoms independently selected from N, S and O, which 9-10 membered bicyclic heterocycle is unsubstituted or substituted with R 5 and unsubstituted or substituted with R 6 and unsubstituted or substituted with NH 2 , or 2) a 6-9 membered monocyclic or bicyclic carbocyclic ring system unsubstituted or substituted with R 5 , unsubstituted or substituted with R 6 , and unsubstituted or substituted with —CH 2 NH 2 ; and n B isn 1 ) a 5- or 6-membered monocyclic heterocycle having 1 or 2 heteroatoms independently selected from N, S or O, which is unsubstituted or substituted on a carbon or nitrogen atom with R 7 , unsubstituted or substituted on a carbon or nitrogen atom with R 8 , and unsubstituted or substituted on a carbon or nitrogen atom with R 9 , or 2 ) an 8- or 9-membered fused bicyclic heterocycle having 1, 2 or 3 nitrogen atoms which is unsubstituted or substituted on a carbon or nitrogen atom with R 7 , and unsubstituted or substituted on a carbon or nitrogen atom with R 8 ;n nand pharmaceutical compositions comprising one or more said compounds, and methods for using said compounds for treating or preventing thromboses. |