| abstract |
A method for treating against, or at least inhibiting or suppressing, the proliferation of a cancer involves administering a compound, a tautomer, or a pharmaceutically acceptable salt thereof, in an amount effective for inhibiting metastasis of cancer cells, wherein the compound is represented by the formula (1): wherein each R1 is independent of the other and represents a halogen atom selected from the group consisting of bromo, chloro, fluoro and iodo. |