A pyridine derivative represented by general formula [1] or a pharmaceutically acceptable salt thereof. In formula [1], R represents an aryl group or a heteroaryl group, wherein each of the aryl group and the heteroaryl group may be substituted by one or two substituents independently selected from the group consisting of an optionally substituted alkyl group, a hydroxy group, a halogen atom and a group represented by general formula [2]. In formula [2], L1 and L3 independently represent a single bond, an alkylene group or a cycloalkylene group L2 represents a single bond, O, or NRB RB represents H or an optionally substituted alkyl group RA represents H, an amino group, a cyano group, a hydroxy group, an alkoxy group, an aryl group, a monoalkylamino group, a dialkylamino group, a carbamoyl group, an alkyloxycarbonyl group, a monoalkylaminocarbonyl group, a dialkylaminocarbonyl group, an alkylcarbonylamino group, a saturated heterocyclic group, an optionally substituted alkyl group, an optionally substituted cycloalkyl group or an optionally substituted heteroaryl group.Se describe un derivado de piridina representado por la fórmula general [1] o una de sus sales farmacéuticamente aceptables. En la fórmula [1], R representa un grupo arilo o un grupo heteroarilo, en donde cada uno del grupo arilo y del grupo heteroarilo puede estar sustituido por uno o dos sustituyentes independientemente seleccionado del grupo que consiste de un grupo alquilo opcionalmente sustituido, un grupo hidroxi, un átomo de halógeno y un grupo representado por la fórmula general [2]. En la formula [2], L1 y L3 independientemente representan un enlace individual, un grupo alquileno o un grupo cicloalquileno L2 representa un enlace individual, un grupo alquileno o un grupo representa un enlace individual, O, o NRB RB representa H o grupo alquilo opcionalmente sustituido RA representa H, un grupo amino, un grupo ciano, un grupo hi
