Abstract: A ferrocenyl compound having the general formula (I): (I) Het is a substituted or unsubstituted heterocyclic moiety. L1, L2 and L3 are each a linker independently selected from alkylene, alkyleneoxy, alkyleneoxyalkylene, alkylenecarbonyl, alkyleneoxycarbonyl, alkyleneamido, alkyleneoxyamido, alkenylene, alkenyleneoxy, alkenylenecarbonyl, alkenyleneamido, alkynylene, alkynyleneoxy, alkynylenecarbonyl and alkynyleneamido, all of which may be straight chain or branched, substituted or unsubstituted. R1 and R2 are each independently selected from H, substituted or unsubstituted alkyl carbonyl, substituted or unsubstituted aryl carbonyl, substituted or unsubstituted phosphate, substituted or unsubstituted phosphonate and substituted or unsubstituted phosphoramidate. M and n are each 0 or 1 and m+n?0.1.

Abstract: A ferrocenyl compound having the general formula (I): (I) Het is a substituted or unsubstituted heterocyclic moiety. L1, L2 and L3 are each a linker independently selected from alkylene, alkyleneoxy, alkyleneoxyalkylene, alkylenecarbonyl, alkyleneoxycarbonyl, alkyleneamido, alkyleneoxyamido, alkenylene, alkenyleneoxy, alkenylenecarbonyl, alkenyleneamido, alkynylene, alkynyleneoxy, alkynylenecarbonyl and alkynyleneamido, all of which may be straight chain or branched, substituted or unsubstituted. R1 and R2 are each independently selected from H, substituted or unsubstituted alkyl carbonyl, substituted or unsubstituted aryl carbonyl, substituted or unsubstituted phosphate, substituted or unsubstituted phosphonate and substituted or unsubstituted phosphoramidate. M and n are each 0 or 1 and m+n?0.

Abstract: A complex comprising a non-absorbable portion attached to an iron chelator moiety, a composition comprising the complex and the use of the complex in the treatment of colorectal cancer. In one embodiment the non-absorbable portion is a polymer such as a polysaccharide, including chitosan, chitin, cellulose or pectin. In one embodiment the iron chelator moiety comprises at least one functional group selected from catechol, hydroxamate or carboxylate, or any combination thereof.

Abstract: Biologically acceptable composition for the prophylaxis and/or treatment of colorectal cancer. The composition contains an iron chelator, and the composition is adapted for the selective targeting of the iron chelator to the colon. The iron chelator is non-digestible, non-absorbable and non-fermentable in the gastrointestinal tract.

Abstract: The present invention relates to a biologically acceptable composition for the prophylaxis and/or treatment of colorectal cancer comprising an iron chelator, wherein the composition is adapted for the selective targeting of the iron chelator to the colon.