FUSED PYRIDAZINE DERIVATIVES HAVING INHIBITORY ACTIVITY ON FMS KINASES

摘要

A pyridazine fused ring derivative of Chemical Formula 1 and a compound selected from pharmaceutically acceptable salts of the same have excellent activities for inhibiting FMS kinase, so that a pharmaceutical composition including the same is effective in preventing or treating immune diseases, metabolic diseases, inflammatory diseases, and cancer caused by FMS kinase. [Chemical Formula 1] In Formula, X, L, A, R_1, and R_2 are the same as defined in the specification.