Abstract: The present invention relates to a compound which can be used in the treatment of infections with pathogenic bacteria, in particular pathogens mediating pathogenicity by quinolone dependent production of virulence factors, such as e.g. Pseudomonas aeruginosa and species of the genus Burkholderia, and which can be used for treating bacterial or chronic infections or can be used in combination with other anti-bacterial agents, such as antibiotics, to increase sensitivity of the bacteria for treatment of e.g. multiresistant strains in e.g. mammals.