The present invention relates to compounds of formula (I), where R1 and R2, which may be identical or different, are selected from the group comprising H, CnH2n-1, a linear or branched alkyl group having 1 to 6 carbons, or together form an aromatic or aliphatic ring with 5 or 6 atoms； R3 is —CO—CH3, —NHOH, —OH, or —OR6 where R6 is a linear or branched alkyl group having 1 to 6 carbon atoms； R4 is H, linear or branched alkyl group having from 1 to 6 atoms, phenyl, benzyl, —CF3 or CF2CF3, vinyl or allyl； R5, R7, R8 are hydrogen atoms； or R3 and R4, R4 and R5, or R7 and R8 together form a ring, fused to the benzene, aromatic or aliphatic ring with 5 or 6 atoms comprising from 1 to 2 heteroatoms selected independently from the group comprising N, O, and use thereof in the medical field.
