The present invention provides novel azabicycle derivative compounds, their hydrates, their solvates, or pharmaceutically acceptable salts thereof, and pharmaceutical compositions for the prevention or treatment of
autotaxin-related diseases containing them as active ingredients. The azabicycle derivative compounds according to the present invention exhibit excellent inhibitory activity against
autotaxin and can be usefully used for the treatment and prevention of
autotaxin inhibition-related diseases, including fibrous diseases, inflammatory diseases, autoimmune diseases, respiratory diseases, cardiovascular diseases, metabolic diseases,
cancer and
cancer metastasis, ocular diseases, cholestatic and other forms of chronic pruritus, and acute or chronic
organ transplant rejection.