N-CONTAINING HETEROARYL DERIVATIVE AND PHARMACEUTICAL COMPOSITION COMPRISING SAME AS ACTIVE INGREDIENT FOR PREVENTION OR TREATMENT OF CANCER

The present invention relates to an N-containing heteroaryl derivative and a pharmaceutical composition comprising same as an active ingredient for the prevention or treatment of cancer. The derivative exhibits high inhibitory activity against various protein kinases, particularly excellent ret proto-oncogene (RET) enzyme inhibitory ability, and has an excellent effect of inhibiting the proliferation of medullary thyroid cancer cells and lung cancer cells, which express RET fusion genes, and thus the derivative can be effectively used in the treatment of cancer, for example, medullary thyroid cancer or lung cancer, and particularly, can be effectively used in the treatment of cancer in which RET fusion genes are expressed.