| abstract |
The present invention provides novel tetrasubstituted pyridine hedgehog pathway antagonists of the following formula I (I) or a pharmaceutically acceptable salt thereof, wherein: X is C-R1 or N; R1 is hydrogen, fluoro or cyano; R2 is formula II (II), piperidinyl, or gem di-F-substituted cyclohexyl; R3 is methyl or trifluoromethyl; R4 is pyrrolidinyl, morpholinyl or pyridyl, amino or dimethylamino; R5 is trifluoromethyl or methylsulfonyl; R6 is hydrogen or methyl; and R7, R8, R9, R10 and R11 are independently hydrogen fluoro, cyano, chloro, methyl, trifluoromethyl, trifluoromethoxy or methylsulfonyl, provided that at least two of R7, R8, R9, R10 and R11 are hydrogen useful in the treatment of cancer. |