Compounds of general formula (I) (See formula) in which R is the next group of formula (II) (See formula) in which X is selected from the group consisting of O, S, CH2, COO, CH2CO , O (CH2) 2O, O (CH2) 3O and N； Z is selected from N and CH2N； Y is selected from aliphatic groups, linear or branched, saturated or unsaturated, having a number of carbon atoms between 1 and 10, and phenyl groups, possibly substituted, or Y forms a saturated or unsaturated heterocycle, possibly substituted with Z , comprising up to two heteroatoms selected from the group consisting of N, O and S； R4 and R5, the same or different from each other, are selected from H and alkyl groups having a number of carbon atoms between 1 and 3, or with the group Z a saturated or unsaturated heterocycle, possibly substituted, comprising up to two heteroatoms selected from the group consisting of N, O and S； R6 is selected from H and aliphatic groups, linear or branched, saturated or unsaturated, having a number of carbon atoms between 1 and 5, possibly substituted with alkylamine or alkylammonium groups having alkyl chains having a number of atoms of carbon between 1 and 5, or forming a saturated heterocycle comprising up to two heteroatoms selected from O and N； d, m and n, equal or different from each other, are selected from 0 to 1； v and s, equal or different from each other, are integers between 1 and 3； R1 is selected from H and a group of formula (III) (See formula) in which G is selected from H and P- (CH2) l- (W) fJ, in which P is selected from the group consisting of O, CH2, CO2, NHCONH and CONH； I is an integer between 0 and 5； W is selected from the group consisting of O, CO2 and NHCONH； f is selected from 0 to 1； J is H or an alkyl group (CH2) q-CH3, in which q is an integer between 0 and 20； R2 and R3, the same or different from each other, are selected from R and R1, R and R1 being defined as above, M is selected from 2H and a metal selected from the group consisting of Zn, Mg, Pt, Pd, Si
