Bi-(indole-2-aceto)-iron II, also named ferrous bis(indole acetate), or a pharmaceutically acceptable salt thereof, wherein: —Fe (Iron) is substituted by another transition metal capable of bonding to two molecules of indole acetate is synthesized for medicinal purposes including treatment of solid tumor cancers and other vascular proliferative disorders. This invention also extends to the substitution of the ligands by one or more of the structural analogues of indole acetetate disclosed in this application. In certain aspects, the compositions of the invention are capable of generating both a vascular targeting effect and tumor cell cytotoxicity (e.g. by oxidative stress) in order to achieve an enhanced anti-tumor response.
