The present invention relates to compounds of the following formula (I), wherein: m represents an integer being equal to 0, 1, 2, 3, 4, 5 or 6, X represents a simple bond or a radical -CHR1 wherein R1 represents: - a hydrogen atom, or - a linear or branched, possibly interrupted by up to 3 heteroatoms selected from O, S or N and/or possibly substituted, (C1-C12)-alkyl, R2, R3 and R4 represent independently from each other: - a hydrogen atom, or - a linear or branched (C1-C12-alkyl or (C1-C12)-acyl R5 represents: - a hydrogen atom, or - a linear or branched, possibly substituted, (C1-C13)-alkyi possibly substituted and possibly interrupted by up to 3 heteroatoms selected from O, S or N, R6 represents: - a hydrogen atom, or - a linear or branched possibly substituted (C1-C12)-alkyl, possibly substituted and possibly interrupted by up to 3 heteroatoms selected from O, S or N, for their use as antibacterial drugs for the treatment and/or the prevention of infection(s) caused by biofilm-forming bacteria.
