Abstract: Provided is a novel compound and use thereof which has an excellent immunological regulation ability while not exhibiting toxicity in vivo, and has no nephrotoxicity and rather has a kidney protective effect, and thus can be used for the treatment of immune diseases such as autoimmune diseases caused by abnormal regulation of various immune responses, inflammatory diseases, and transplant rejection diseases. A transplant rejection avatar animal model was confirmed to be humanized, by confirming an increase in serum creatinine, an indicator of transplant rejection in a patient, an increase in human CD4-positive cells, and infiltration of inflammatory cytokine IL-17 into kidney tissue of the animal model. It was confirmed that, when an immunosuppressant is administered, the increased serum creatinine, human CD4-positive cells, and the infiltration of inflammatory cytokine IL-17 are reduced, and thus an animal model, in which the immune status of a patient is reflected, is effectively constructed.