Disclosed are benzamide derivatives having the formulawherein X is selected from the group consisting of H, halo, —C1-C6 alkyl, aryl, —C3-C7 cycloalkyl, and -3- to 10-membered heterocycle, wherein the —C1-C6 alkyl, aryl, —C3-C7 cycloalkyl, and -3- to 10-membered heterocycle may be unsubstituted or substituted； Y is selected from the group consisting of H, —C1-C6 alkyl, and —C3-C7 cycloalkyl, the —C1-C6 alkyl, aryl, —C3-C7 cycloalkyl, and -3- to 10-membered heterocycle may be unsubstituted or substituted； Z is selected from the group consisting of —NHOH and phenylene diamine group (II) of structureand wherein Q is selected from the group consisting of H, F and Cl. These benzamide derivatives are useful in slowing the expansion of cancer cells.
