| abstract |
Abstract The present invention provides bis-platinum complexes of formula I (I) wherein A is a disubstituted 1,4-anthracenedione; X, X' are ligands selected from the group consisting of Cl, Br, OH, CH3SOCH3?OH or CH3SOCH3?Hal or, taken together, form the anion of a dicarboxylic acid; m is zero, 0.5 or an integer from 1 to 5; Solv. is a solvent of crystallization which may optionally be present; Ra is hydrogen, alkyl optionally substituted by hydroxy groups and/or interrupted by oxygen atoms; Rb is alkyl optionally substituted by hydroxy, alkoxy, polyalkoxy or sulphonic groups or a residue of an amino-sugar and n is an integer from 2 to 3. The compounds of formula I are useful as anti-tumor agents. |