C - Chemistry – Metallurgy – 07 – D
Patent
C - Chemistry, Metallurgy
07
D
C07D 487/04 (2006.01) A61K 31/40 (2006.01) A61K 31/44 (2006.01)
Patent
CA 2155148
Compounds represented by the Formula I: Image wherein: R1 is hydrogen or lower alkyl; R2 is heteroaryl; and R3 and R4 are independently hydrogen or lower alkyl; and the pharmaceutically acceptable salts thereof, are useful as chemotherapeutic agents.
F. Hoffmann-La Roche Ag
Gowling Lafleur Henderson Llp
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