Abstract: The present invention concerns the compounds of formula the N-oxide forms, the pharmaceutically acceptable addition salts and the stereochemically isomeric forms thereof, wherein m represents an integer being 0 or 1; n represents an integer being 0, 1 or 2; R1 represents C1-4alkyl, C1-4alkyl substituted with pyridinyl, phenyl, piperidinyl or piperidinyl substituted with C1-4alkyloxycarbonyl; R2 represents hydrogen or C1-4alkyl; R3 represents hydrogen or C1-4alkyl; or R2 and R3 taken together with the carbon atom to which they are attached form cyclopentyl or piperidinyl wherein said cyclopentyl or piperidinyl each independently may optionally be substituted with one, or where possible, two or three substituents each independently selected from C1-4alkyloxycarbonyl, phenylcarbonyl or —C(?NH)—NH2; R4 represents halo or C1-4alkyloxy; R5 represents Het2, C1-4alkyl substituted with one or where possible more substituents being selected from hydroxy, halo, Het3 or NR6R7, or C1-4alkyloxy substituted with one or