The present invention belongs to the field of antibacterial agents, more specifically to antibacterials for treating Acinetobacter baumannii infections. The invention provides arylhydrazides containing a 2-pyridone moiety, according to formula (I), which show selective antibacterial activity against A. baumannii. The invention also relates to their use as medicaments and specifically as antibacterials for the treatment of A. baumannii infections, as well as to a process for their preparation and to pharmaceutical compositions containing them.