| abstract |
The invention concerns novel products of formula (I), wherein: R1 represents alkyl or alkoxy substituted in particular by phenyl, by a carbocyclic or heterocyclic radical consisting of condensed cycles or by an amino radical itself optionally substituted; R2 represents in particular alkyl optionally substituted, phenyl optionally substituted in particular by alkoxy or benzyloxy, naphthyl, amino optionally substituted and the radical >=N-O-R8a; R3 and R4 represent in particular hydrogen, hydroxyl, alkyl, alkoxy, or optionally substituted phenyl; R5 and R6 represent in particular hydrogen, hydroxyl, optionally substituted alkyl or alkenyl; R8 represents in particular hydrogen, alkyl or benzyl, said products being in all the isomeric forms and their salts, as medicines. |