N-(Heteroaroyl or heteroaralkanoyl)-phenyl-beta-alanine (2,5-dioxo-pyrrolidinocarbonyl)-alkylamides (I) are new. Phenyl-beta-alaninamide derivatives of formula (I) are new； R1 = heteroaryl (optionally substituted (os) by 1-3 groups R11)； R11 = halo, alkyl, NO2, NH2, CF3, aryl, heteroaryl, OH, alkoxy, COOH, alkoxycarbonyl, CONH2 or alkylaminocarbonyl； R2 = H or Me R3, R4 = H or 1-3C alkyl； R5 = halo, CF3, OCF3, NO2, NH2, alkylamino, OH, alkyl, alkoxy, COOH, alkoxycarbonyl, CONH2, alkylaminocarbonyl, aryl or heteroaryl； or two groups R5 together complete a cycloalkyl or heterocyclyl ring (os by 1 or 2 groups R51)； R51 = halo, NO2, NH2, CF3, OH, alkyl or alkoxy； R6 = alkyl, cycloalkyl or heterocyclyl (all os by 1 or 2 groups R61)； R61 = halo, NO2, NH2, CF3, OH, alkyl or alkoxy； n = 0-3； m = 0-4. An Independent claim is also included for the preparation of (I).
