A nitrogen-containing heterocyclic compound represented by formula (I): ** Formula ** in which R1 represents linear or branched C1-10 alkyl which may be substituted with linear or branched C1-10 alkoxy, and the remainder represented by * * Formula ** in formula (I) represents ** Formula ** in which R2A represents formula (III-B): ** Formula ** in which R5B represents oxazol-5-yl or formula (III-1 -B): ** Formula ** where R6B represents linear or branched C1-10 alkyl or cycloalkyl, and R3 represents linear or branched C1-10 alkyl substituted with fluorine atom (s) or a pharmaceutically acceptable salt thereof.Un compuesto heterocíclico que contiene nitrógeno representado por la fórmula (I): **Fórmula** en la que R1 representa alquilo C1-10 lineal o ramificado que puede estar sustituido con alcoxi C1-10 lineal o ramificado, y el resto representado por**Fórmula** en la fórmula (I) representa **Fórmula** en la que R2A representa la fórmula (III-B):**Fórmula** en la que R5B representa oxazol-5-ilo o fórmula (III-1-B): **Fórmula** donde R6B representa alquilo o cicloalquilo C1-10 lineal o ramificado, y R3 representa alquilo C1-10 lineal o ramificado sustituido con átomo(s) de flúor o una sal farmacéuticamente aceptable del mismo.