Patent ID: 8148359

Claim:
Compounds of formula (I) below: in which the group A represents: either a nitrogen atom, or a ring corresponding to the formula below, and in which the substitution takes place on the nitrogen atoms: and in which: the R 1 , R′ 1 , and R″ 1 radicals, which may be identical or different, represent a hydrogen atom or an optionally substituted alkyl radical containing 1 to 12 carbon atoms, the R 2 , R′ 2 and R″ 2 radicals, which may be identical or different, are chosen from —OH, —OR, —NHR and —NRR′ groups in which R and R′, which may be identical or different, represent a hydrogen atom or an optionally substituted alkyl radical containing 1 to 12 carbon atoms, the R 2 , R′ 2 and R″ 2 radicals preferably being —NH 2 , —OH or —OR groups in which R represents a hydrogen atom or an optionally substituted alkyl radical containing 1 to 12 carbon atoms.