A compound according to the invention is given by Formula or a pharmaceutically acceptable salt thereof, wherein the dotted bond between A and B denotes an optional bond so as to form a ring closed structure, and wherein Z is selected from -CH 2 -CH 2 - or >CH(CH 3), A is selected from -SR, -OR and NHR, and R is B is selected from -O-R', -NHR", -SR'" or -OH; and R' is selected from the formula to below: R', R" and R"' are independently different or identical and is selected from formula (IV-VIII) below: R 1 and R 3 are independently different or identical and are selected from H, Me, Et, propyl, i-propyl, butyl, iso-butyl, t-butyl, O-acyl, O-alkyl, N-acyl, N-alkyl, Xacyl, CH 2 Xalkyl, CH 2 X-acyl, F, CH 2 COOH, CH 2 CO 2 alkyl, X is selected from O, NH, NR 6, S, R 2 is selected from Me, Et, propyl, i-propyl, butyl, iso-butyl, t-butyl, C CH 3, C CH 2 C CH 3, C CH 2 CH CH 3, p is an integer and is 1 or 2 R 6 is selected from H, Me, Et, propyl, i-propyl, butyl, iso-butyl, t-butyl, acetyl, acyl, propionyl, benzoyl, or formula, or formula (VIII) X 5 is selected from -H, Me, Et, propyl, i-propyl, butyl, iso-butyl, t-butyl, -COOH, - C(=O)XR 6,, CONR 1 R 3 or is formula X 7 is selected from R 1, -NR 1 R 3, R 9 is selected from H, Me, Et or O 2 CCH 2 CH 2 COXR 8 R 10 is selected from Oacyl, NHalkyl, NHacyl, or O 2 CCH 2 CH 2 COX 6 R 8 X 6 is selected from O, NR 8, NR 6 R 8, wherein R 6 and R 8 are independently different or identical and are is selected from H, alkyl, Me, Et, propyl, i-propyl, butyl, iso-butyl, t-butyl, acetyl, acyl, propionyl, benzoyl, or formula, or formula (VIII), R 11 and R 12 are independently different or identical and are selected from H, Me, Et, propyl, i-propyl, butyl, iso-butyl, t-butyl, acetyl, propionyl, benzoyl, -CH 2 Xalkyl, - CH 2 Xacyl, where X is O, NR 6 or S, R c and R d are independently different or identical and are selected from CH 2 Xalkyl, CH 2 Xacyl, where X = O, NR 6 or S, R 13, R 14 and R 15 are independently different or identical and are selected from H, Me, Et, propyl, i-propyl, butyl, iso-butyl, t-butyl, -COOH, O-acyl, O-alkyl, N-acyl, N-alkyl, Xacyl, CH 2 Xalkyl; Substituents on R13 and R14 or R13 and R15 may bridge to form a cyclic system, R f, R g and R h are independently different or identical and are selected from Xacyl, - CH 2 Xalkyl, -CH 2 X-acyl and R 9, alkyl is selected from Me, Et, propyl, i-propyl, butyl, iso-butyl, t-butyl, acyl is selected from formyl, acetyl, propionyl, isopropionyl, byturyl, tert-butyryl, pentanoyl, benzoyl, acyl and/or alkyl may be optionally substituted, and when the dotted bond between A and B is present, the compound according to formula is wherein X 4 is selected from -COOH, -C(=O)XR 6, with the proviso that the compound is not or Z is selected from -CH 2 -CH 2 - or >CH(CH 3), A is selected from -SR, -OR and NHR, and R is B is selected from -O-R', -NHR", -SR'" or -OH; and R' is selected from the formula to below: R', R" and R"' are independently different or identical and is selected from formula (IV-VIII) below: R 1 and R 3 are independently different or identical and are selected from H, Me, Et, propyl, i-propyl, butyl, iso-butyl, t-butyl, O-acyl, O-alkyl, N-acyl, N-alkyl, Xacyl, CH 2 Xalkyl, CH 2 X-acyl, F, CH 2 COOH, CH 2 CO 2 alkyl, X is selected from O, NH, NR 6, S, R 2 is selected from Me, Et, propyl, i-propyl, butyl, iso-butyl, t-butyl, C CH 3, C CH 2 C CH 3, C CH 2 CH CH 3, p is an integer and is 1 or 2 R 6 is selected from H, Me, Et, propyl, i-propyl, butyl, iso-butyl, t-butyl, acetyl, acyl, propionyl, benzoyl, or formula, or formula (VIII) X 5 is selected from -H, Me, Et, propyl, i-propyl, butyl, iso-butyl, t-butyl, -COOH, - C(=O)XR 6,, CONR 1 R 3 or is formula X 7 is selected from R 1, -NR 1 R 3, R 9 is selected from H, Me, Et or O 2 CCH 2 CH 2 COXR 8 R 10 is selected from Oacyl, NHalkyl, NHacyl, or O 2 CCH 2 CH 2 COX 6 R 8 X 6 is selected from O, NR 8, NR 6 R 8, wherein R 6 and R 8 are independently different or identical and are is selected from H, alkyl, Me, Et, propyl, i-propyl, butyl, iso-butyl, t-butyl, acetyl, acyl, propionyl, benzoyl, or formula, or formula (VIII), R 11 and R 12 are independently different or identical and are selected from H, Me, Et, propyl, i-propyl, butyl, iso-butyl, t-butyl, acetyl, propionyl, benzoyl, -CH 2 Xalkyl, - CH 2 Xacyl, where X is O, NR 6 or S, R c and R d are independently different or identical and are selected from CH 2 Xalkyl, CH 2 Xacyl, where X = O, NR 6 or S, R 13, R 14 and R 15 are independently different or identical and are selected from H, Me, Et, propyl, i-propyl, butyl, iso-butyl, t-butyl, -COOH, O-acyl, O-alkyl, N-acyl, N-alkyl, Xacyl, CH 2 Xalkyl; Substituents on R13 and R14 or R13 and R15 may bridge to form a cyclic system, R f, R g and R h are independently different or identical and are selected from Xacyl, - CH 2 Xalkyl, -CH 2 X-acyl and R 9, alkyl is selected from Me, Et, propyl, i-propyl, butyl, iso-butyl, t-butyl, acyl is selected from formyl, acetyl, propionyl, isopropionyl, byturyl, tert-butyryl, pentanoyl, benzoyl, acyl and/or alkyl may be optionally substituted, and when the dotted bond between A and B is present, the compound according to formula is wherein X 4 is selected from -COOH, -C(=O)XR 6, with the proviso that the compound is not or