| abstract |
Compounds having the formula (I) wherein R and R1, similar or different, represent a hydrogen or halogen atom or a radical alkyl, alkoxy, amino, acylamino, phenylureido, -N=CH-N(R2)R3, nitro, imidazolyl, phenyl, SO3H or cyano; R2 and R3 which may be similar or different, represent each an alkyle radical; the invention also relates to the salts of such compounds, their preparation, intermediates for preparing them and drugs containing them. |