The present invention relates to 2-pyrrolidine phenylhydrazide compounds of formula (I), which are selective antibacterials specifically against Acinetobacter baumannii. The invention also relates to their therapeutic use as antibacterials, to a process for their preparation and to pharmaceutical compositions containing them.本發明涉及式(I)的2-吡咯啶苯基醯肼化合物,其為專一性針對鮑氏不動桿菌的選擇性抗細菌劑。本發明亦涉及其作為抗細菌劑的治療用途、其製備方法及包含其之醫藥組成物。