The present application relates to novel imidazolidine-2,4-dione derivatives of the general formula (I), where R1, R2, R3, R4, X, and Y are variables. Said materials have an antiproliferative activity. They are particularly useful for treating pathological conditions and diseases, such as cancer, that are linked to abnormal cell proliferation. The invention also relates to pharmaceutical compositions containing said materials and to the use thereof for preparing a drug.