Disclosed are 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, ora 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, ora linear or branched (C1-C12)-alkyl or (C1-C12)-acylR5 represents: a hydrogen atom, ora linear or branched, possibly substituted, (C1-C13)-alkyl 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.
