New compounds and uses thereof

A compound of Formula I

• wherein X1, X2, X3 and X4 are each independently selected from the group consisting of hydrogen, hydroxy, halogeno, amino, C1-4 alkoxy, C2-8 alkanoyloxy, —NH-A-NHR, —NH-A-NR′R″ and —NH-A-N(O) R′R″
• wherein A is an alkylene group with a chain length of at least two carbon atoms (between NH and NHR or N(O)R′R″),
• wherein R, R′ and R″ are each independently selected from C1-4 alkyl groups and C2-4 hydroxyalkyl and C2-4 dihydroxyalkyl groups in which the carbon atom attached to the nitrogen atom does not carry a hydroxy group and no carbon atom is substituted by two hydroxy groups, or wherein R and R″ together are a C2-6 alkylene group which with the nitrogen atom to which R′ and R″ are attached forms a heterocyclic group having 3 to 7 atoms in the ring,
• wherein at least one of X1, X2, X3 and X4 is selected from the group consisting of deuterated forms of —NH-A-NHR, —NH-A-NR′R″ and —NH-A-N(O) R′R″.