abstract |
There is provided compounds of formula (I), wherein X 1 , R 1 , R 2 , Y 1 , Y 2 , Y 3 and Y 4 have meanings given in the description, and pharmaceutically-acceptable salts thereof, which compounds are useful in the treatment of diseases in which inhibition of the activity of a member of the MAPEG family is desired and/or required, and particularly in the treatment of inflammation. |