Compounds derived from pyridin - 4 - ilo; Pharmaceutical Composition and use in the treatment of diseases or Disorders associated with the activated immune system, such as organ transplant rejection, autoimmune Syndrome, among others.<;p>;COMPUESTOS DERIVADOS DE (S)-N-(3-(2-ETIL-4-(5-(2-PIRIDIN-4-IL)-1,2,4-OXADIAZOL-3-IL)-6-METILFENOXI)-2-HIDROXIPROPIL)-2-HIDROXIACETAMIDA, AGONISTAS DEL RECEPTOR S1P1/EDG1; COMPOSICION FARMACEUTICA Y EL USO EN EL TRATAMIENTO DE ENFERMEDADES O TRASTORNOS ASOCIADOS CON EL SISTEMA INMUNE ACTIVADO<;/p>;