| abstract |
The invention concerns a compound of the Formula I, wherein Qa is heteroaryl and is substituted with halogeno; R1 and R2 are each hydrogen; and Qb is phenyl or heteroaryl, and Qb may optionally bear 1 or 2 substituents selected from hydroxy, halogeno and (1-6C)alkyl, or a pharmaceutically-acceptable salt thereof; processes for their preparation, pharmaceutical compositions containing them and their use in the treatment of diseases or medical condions mediated by cytokines. |