Patent ID: 8067435

Claim:
A compound of formula (I), isomers, diasteroisomers, or combinations thereof, the compound comprising: wherein: R 1 represents a (CH 2 ) n —NH 2 radical, n being equal to 1 or 2; R 2 represents a hydrogen atom; R 3 and R 4 form together a nitrogen-containing heterocycle with aromaticity with 5 apices containing 1, 2 or 3 nitrogen atoms, substituted on this nitrogen atom or on one of these nitrogen atoms with a (CH 2 ) m —(C(O)) p —R 5 group, m being equal to 0, 1, 2 or 3, p being equal to 0 or 1 and R5 representing a hydroxy group, in which case p is equal to 1, or an amino, (C 1 -C 6 )alkyl of di-(C 1 -C 6 )alkyl amino group, or a nitrogen-containing heterocycle with aromaticity with 5 or 6 apices containing 1 or 2 nitrogen atoms and, if necessary, an oxygen or sulfur atom; wherein when the sub-group (C(O)) p —R5 forms a carboxy, amino, (C1-C6)alkyl or di(C1-C6)alkyl amino group, m is different from 0 or 1; wherein the compound is in a free form and/or as zwitterions and salts with pharmaceutically acceptable mineral or organic bases and acids.