| abstract |
The invention relates to sulfonamide derivatives, to their use in medicine, to compositions containing them, to processes for their preparation and to intermediates used in such processes. n More particularly the invention relates to a new sulfonamide Nav1.7 inhibitors of formula (I): n n n n n n n n n n or a pharmaceutically acceptable salt thereof, wherein Het 1 , X, R 1 , R 2 , R 3 , R 4 and R 5 are as defined in the description. n Nav 1.7 inhibitors are potentially useful in the treatment of a wide range of disorders, particularly pain. |