Cholinesterase inhibitors of the general formula (I), ** Formula ** in which A represents the linear or branched C2-C14 alkyl group, R1, R2 are the same or different and are independently selected from hydrogen, a halogen atom, alkyl C1-C3, C1-C3 alkyl substituted with a halogen atom and C1-C3 alkoxy, X represents a radical of formula (A) or (B): ** Formula ** and the pharmaceutically acceptable salts thereof.Inhibidores de colinesterasa de fórmula general (I),**Fórmula** en la que A representa el grupo alquilo C2-C14 lineal o ramificado, R1, R2 son iguales o diferentes y se seleccionan independientemente entre hidrógeno, un átomo de halógeno, alquilo C1-C3, alquilo C1-C3 sustituido con un átomo de halógeno y alcoxi C1-C3, X representa un radical de fórmula (A) o (B):**Fórmula** y las sales farmacéuticamente aceptables de los mismos.