| abstract |
A compound of formula (I) n nwherein n R 1 is aryl, heteroaryl, cycloalkyl or alkyl; R 2 is H, alkyl, nitro, —CO 2 R 7 , CONR 4 R 5 or halo; R 3 is H, NR 4 R 5 , NC(O)R 8 , halo, trifluoromethyl, alkyl, nitrile or alkoxy; R 4 and R 5 may be the same or different, and may be H, alkyl, aryl, heteroaryl or cycloalkyl; or R 4 and R 5 may together form a saturated, unsaturated or partially saturated 4 to 7 member ring, wherein said ring may optionally comprise one or more further heteroatoms selected from N, O or S; X is O, S or NR 6 ; R 6 is H or alkyl; R 7 is hydrogen, methyl or ethyl; nn R 8 is methyl or ethyl; n L is (CH 2 ) n , where n is 1, 2 or 3; and Y is aryl, a heterocyclic group, alkyl, alkenyl or cycloalkyl; together with pharmaceutically acceptable salts thereof. The use of these compounds as potassium channel inhibitors is also described. |