| abstract |
The invention concerns novel products of formula (I), wherein R1 represents hydrogen, alkyl, alkenyl optionally substituted; R2 represents alkoxy and R3 represents alkyl or alkoxy; R4 represents hydrogen, halogen, dioxolane, -CH=O, -CH=N-OH, -CH=N-phenyl with phenyl optionally substituted, cyano, alkyl and alkoxy optionally substituted; R5 represents hydrogen or halogen, all those radicals being optionally substituted, said products being in all isomeric forms and salts thereof, as medicines. |