A compound of formula, enantiomers, mixture of enantiomers, diastereoisomers and mixture of diasteroisomers thereof: wherein: - W is selected from the group consisting of =O; -NR 1 R 2; -NR 3 -(CH 2) n -NR 4 R 5; -O-(CH 2) n -NR 4 R 5; -NR 3 -(CH 2) n -N + R 6 R 7 R 8 and -O-(CH 2) n -N + R 6 R 7 R 8; - X is selected from the group consisting of =O, -OH; -NR 1 R 2; -NR 3 -(CH 2) n -NR 4 R 5; -O-(CH 2) n -NR 4 R 5; -NR 3 -(CH 2) n -N + R 6 R 7 R 8 and -O-(CH 2) n -N + R 6 R 7 R 8, - Y is selected from the group consisting of -NR 1 R 2; -NR 3 -(CH 2) n -NR 4 R 5; and -NR 3 -(CH 2) n -N + R 6 R 7 R 8, R 1 and R 2, identical or different, are selected from the group consisting of H; (C 1 -C 16)-alkyl; (C 3 -C 16)-alkenyl; (C 3 -C 16)-alkynyl; (C 3 -C 16)-cycloalkyl; aryl; heteroaryl; (C 1 -C 6)-alkyl-aryl; (C 1 -C 6)-alkyl-heteroaryl; or R 1 represents H and R 2 represents OR 9, where Rg is H, (C 1 -C 6)-alkyl, aryl and (C 1 -C 6)-alkyl-aryl; R 3 is selected from the group consisting of H; (C 1 -C 6)-alkyl; (C 1 -C 6)-alkyl-aryl; R 4 and R 5, identical or different, are selected from the group consisting of H; (C 1 -C 6)-alkyl; aryl and (C 1 -C 6)-alkyl-aryl; R 6, R 7 and R 8, identical or different, are selected from the group consisting of (C 1 -C 6)-alkyl; aryl and (C 1 -C 6)-alkyl-aryl; - Z is selected from the group consisting of OH; NHNR 9 R 10; NHOC R 11; N -C R 11; OOH, SR 12; 2-aminopyridine; 3-aminopyridine; -NR 3 -(CH 2) n -NR 4 R 5; and -NR 3 -(CH 2) n -OH; where: Rg and R 10, identical or different, are selected from the group consisting of H, (C 1 -C 6)-alkyl, aryl and (C 1 -C 6)-alkyl-aryl; R 11 is selected from the group consisting of H; (C 1 -C 16)-alkyl; (C 3 -C 16)-alkenyl; (C 3 -C 16)-alkynyl; aryl; heteroaryl; (C 1 -C 6)-alkyl-aryl; (C 1 -C 6)-alkyl-heteroaryl; R 12 is selected from the group consisting of H; (C 1 -C 16)-alkyl; (C 3 -C 16)-alkenyl; (C 3 -C 16)-alkynyl; aryl; heteroaryl; (C 1 -C 6)-alkyl-aryl; (C 1 -C 6)-alkyl-heteroaryl n = 0, 2, 3, 4, 5 or 6. - W is selected from the group consisting of =O; -NR 1 R 2; -NR 3 -(CH 2) n -NR 4 R 5; -O-(CH 2) n -NR 4 R 5; -NR 3 -(CH 2) n -N + R 6 R 7 R 8 and -O-(CH 2) n -N + R 6 R 7 R 8; - X is selected from the group consisting of =O, -OH; -NR 1 R 2; -NR 3 -(CH 2) n -NR 4 R 5; -O-(CH 2) n -NR 4 R 5; -NR 3 -(CH 2) n -N + R 6 R 7 R 8 and -O-(CH 2) n -N + R 6 R 7 R 8, - Y is selected from the group consisting of -NR 1 R 2; -NR 3 -(CH 2) n -NR 4 R 5; and -NR 3 -(CH 2) n -N + R 6 R 7 R 8, R 1 and R 2, identical or different, are selected from the group consisting of H; (C 1 -C 16)-alkyl; (C 3 -C 16)-alkenyl; (C 3 -C 16)-alkynyl; (C 3 -C 16)-cycloalkyl; aryl; heteroaryl; (C 1 -C 6)-alkyl-aryl; (C 1 -C 6)-alkyl-heteroaryl; or R 1 represents H and R 2 represents OR 9, where Rg is H, (C 1 -C 6)-alkyl, aryl and (C 1 -C 6)-alkyl-aryl; R 3 is selected from the group consisting of H; (C 1 -C 6)-alkyl; (C 1 -C 6)-alkyl-aryl; R 4 and R 5, identical or different, are selected from the group consisting of H; (C 1 -C 6)-alkyl; aryl and (C 1 -C 6)-alkyl-aryl; R 6, R 7 and R 8, identical or different, are selected from the group consisting of (C 1 -C 6)-alkyl; aryl and (C 1 -C 6)-alkyl-aryl; R 1 and R 2, identical or different, are selected from the group consisting of H; (C 1 -C 16)-alkyl; (C 3 -C 16)-alkenyl; (C 3 -C 16)-alkynyl; (C 3 -C 16)-cycloalkyl; aryl; heteroaryl; (C 1 -C 6)-alkyl-aryl; (C 1 -C 6)-alkyl-heteroaryl; or R 1 represents H and R 2 represents OR 9, where Rg is H, (C 1 -C 6)-alkyl, aryl and (C 1 -C 6)-alkyl-aryl; R 3 is selected from the group consisting of H; (C 1 -C 6)-alkyl; (C 1 -C 6)-alkyl-aryl; R 4 and R 5, identical or different, are selected from the group consisting of H; (C 1 -C 6)-alkyl; aryl and (C 1 -C 6)-alkyl-aryl; R 6, R 7 and R 8, identical or different, are selected from the group consisting of (C 1 -C 6)-alkyl; aryl and (C 1 -C 6)-alkyl-aryl; - Z is selected from the group consisting of OH; NHNR 9 R 10; NHOC R 11; N -C R 11; OOH, SR 12; 2-aminopyridine; 3-aminopyridine; -NR 3 -(CH 2) n -NR 4 R 5; and -NR 3 -(CH 2) n -OH; where: Rg and R 10, identical or different, are selected from the group consisting of H, (C 1 -C 6)-alkyl, aryl and (C 1 -C 6)-alkyl-aryl; R 11 is selected from the group consisting of H; (C 1 -C 16)-alkyl; (C 3 -C 16)-alkenyl; (C 3 -C 16)-alkynyl; aryl; heteroaryl; (C 1 -C 6)-alkyl-aryl; (C 1 -C 6)-alkyl-heteroaryl; R 12 is selected from the group consisting of H; (C 1 -C 16)-alkyl; (C 3 -C 16)-alkenyl; (C 3 -C 16)-alkynyl; aryl; heteroaryl; (C 1 -C 6)-alkyl-aryl; (C 1 -C 6)-alkyl-heteroaryl n = 0, 2, 3, 4, 5 or 6. Rg and R 10, identical or different, are selected from the group consisting of H, (C 1 -C 6)-alkyl, aryl and (C 1 -C 6)-alkyl-aryl; R 11 is selected from the group consisting of H; (C 1 -C 16)-alkyl; (C 3 -C 16)-alkenyl; (C 3 -C 16)-alkynyl; aryl; heteroaryl; (C 1 -C 6)-alkyl-aryl; (C 1 -C 6)-alkyl-heteroaryl; R 12 is selected from the group consisting of H; (C 1 -C 16)-alkyl; (C 3 -C 16)-alkenyl;