To provide a novel JAK3 inhibitor that is useful as a preventive and/or therapeutic agent for rejection and graft versus host disease (GvHD) in organ transplantation, rheumatoid arthritis, multiple sclerosis, systemic lupus erythematosus, Sjögren syndrome, Behcet's disease, type I diabetes mellitus, autoimmune thyroiditis, idiopathic thrombocytopenic purpura, ulcerative colitis, Crohn's disease, asthma, allergic rhinitis, atopic dermatitis, contact dermatitis, urticaria, eczema, psoriasis, allergic conjunctivitis, uveitis, cancer, leukemia and the like. The pyridine-3-carboxyamide derivative represented by the general formula (1):
or its salt or a solvate thereof.
[EN] CYANO-SUBSTITUTED PYRIDINE AND CYANO-SUBSTITUTED PYRIMIDINE COMPOUND, AND PREPARATION METHOD AND APPLICATION THEREOF<br/>[FR] COMPOSÉ DE PYRIDINE À SUBSTITUTION CYANO ET COMPOSÉ DE PYRIMIDINE À SUBSTITUTION CYANO, PROCÉDÉ DE PRÉPARATION CORRESPONDANT ET UTILISATION ASSOCIÉE<br/>[ZH] 一种氰基取代吡啶及氰基取代嘧啶类化合物、制备方法及其应用