Compounds of formula (I): in which: R 1 represents: a phenyl group or a naphthyl group, these two groups being optionally substituted with one or more atoms or groups independently selected from each other among the following atoms or groups: halogen, (C1-C6) alkyl, halo (C1-C6) alkyl, (C1-C6) alkoxy, halo (C1-C6) alkoxy, (C1-C6) thioalkyl, -S (O) (C1-C6) alkyl , -S (O) 2 (C1-C6 alkyl), hydroxyl, hydroxy-C1-C6 alkylene, CHO, COOH, (C1-C6) alkoxy (C1-C6) alkylene -oxy, NRaRb, CONRaRb, SO2NRaRb, NRcCORd, OC (O) NRaRb, OCO-C1-C6 alkyl, NRcC (O) ORe, NRcSO2Re, X represents 1 to 4 identical or different substituents from each other, chosen from hydrogen, halogen, C1-C6 alkyl ), (C1-C6) alkoxy, the (C1-C6) alkyl may be optionally substituted with one or more groups selected from a halogen, (C1-C6) alkoxy, hydroxyl, R2 and R3 independently represent one another. hydrogen atom, a (C1-C6) alkyl group optionally substituted with a group Rf； a CHO, COOH, X and R3 group can form together with the carbon atoms that carry them, a carbon cycle of 5 to 7 carbon atoms； R4 represents a hydrogen atom or a (C1-C6) alkyl group, Ra and Rb represent, independently of one another, a hydrogen atom or a (C1-C6) alkyl, aryl (C1-C6) arylalkylene or aryl group； or Ra and Rb together with the nitrogen atom carried by an azetidino, pyrrolidino, piperidino, azepino, morpholino, thiomorpholino, piperazino, homopiperazino group, this group being optionally substituted with a (C1-C6) alkyl, aryl or aryl group -C1-C6 alkylene； Rc and Rd represent, independently of one another, a hydrogen atom or a (C1-C6) alkyl, arylalkylene (C1-C6), aryl group； or Rc and Rd together form an alkylene group (C2-C5)； Re represents a (C1-C6) alkyl, aryl (C1-C6) alkylene, aryl group； or Rc and Re together form an alkylene group (C2-C5)； Rf represents a hydroxyl group, an oxo, CHO or COOH group, in the form of a base or an acid addition salt.Compuestos de fórmula (I): en la que: R1 representa: un grupo fenilo o un grupo na
