Novel potassium channel inhibitors

A compound of formula (I)

• Wherein
• A is a 5 or 6-membered aromatic heterocycle comprising at least one nitrogen atom and optionally 1 sulphur atom and optionally 1 oxygen atom, optionally substituted with at least one group selected from halogen, C1-6 alkyl, C1-6 alkyl substituted with at least one halogen, C1-6 alkoxy, C1-6 alkoxy substituted with at least one halogen, C1-6 alkylthio, and cyano;
• R1 is selected from hydrogen and C1-6 alkyl;
• or A and R1 taken together with the nitrogen atom to which they are linked form a 5-6 membered aromatic or non-aromatic heterocycle containing 1-2 nitrogen atoms, and optionally 1 oxygen atom, and optionally 1 sulphur atom, optionally substituted with a group selected from halogen, C1-6 alkyl, C1-6 alkyl substituted with a halogen, C1-6 alkoxy, C1-6 alkoxy substituted with a halogen, C1-6 alkylthio, ═NH, ═O, —OH, and cyano.
• R2-R3 are independently a group selected from hydrogen and C1-6 alkyl;
• or R2 and R3 taken together with the carbon atom to which they are linked form a C3-4 cycloalkyl;
• R4-R6 are independently a group selected from hydrogen, halogen, and C1-4 alkyl;
• R7-R8 are independently a group selected from hydrogen, C1-4 alkyl, C1-4 alkyl substituted with one OH, C1-4 alkyl substituted with one OC1-3 alkyl, C1-4 alkyl substituted with at least one halogen,
• or R7 and R8 taken together with the carbon atom to which they are linked form a C3-4 cycloalkyl;
• R9-R13 are independently a group selected from hydrogen, halogen, C1-6 alkyl substituted with at least one halogen, C1-6 alkoxy, C1-6 alkoxy substituted with at least one halogen, C1-6 alkylthio, and cyano;
• or
• a pharmaceutically acceptable salt thereof.