| abstract |
There is provided compounds of formula I, wherein ring R 1a to R 1c , R 2a to R 2e , and X have meanings given in the description, and pharmaceutically-acceptable salts thereof, which compounds are useful in the treatment of diseases in which inhibition of leukotriene C 4 synthase is desired and/or required, and particularly in the treatment of a respiratory disorder and/or inflammation. |