NEW ALKANESULFONANILIDE DERIVATIVES, PROCESSES FOR PREPARATION THEREOF AND PHARMACEUTICAL COMPOSITION COMPRISING THE SAME

摘要

Alkanesulfonanilide derivatives of the formula : wherein Ar is a group of the formula : wherein R<4>, R<5>, R<6> and R<7> are each hydrogen, halogen, halo(lower)alkyl or lower alkoxy, or heterocyclic group which may have halogen or lower alkyl X is @@@n , - @@ , -CO-, -NHCO-, -CONH- or - @@- wherein n is 0, 1 or 2, R<8> is hydrogen or lower alkyl, R<9> is hydrogen or hydroxy, R<1> is lower alkyl or halo(lower)alkyl, R<2> defines certain substituents, R<3> is hydrogen, nitro lower alkyl or halogen, and pharmaceutical acceptable salts thereof, processes for their preparation and pharmaceutical compositions comprising them.