Abstract: Novel xylose based glycoside compounds that have xylose linked O-, S- or C-glycosidically to an aglycone containing several aromatic rings, and compositions that comprise the novel xylose based glycosides and non-xylose-based anti-tumor agents, pharmaceuticals or dietary supplements. The compounds or compositions are administered to treat proliferative diseases, including various forms of cancer.

Abstract: The present invention relates to combinations of xylose compounds with other pharmaceutically active compounds, to pharmaceutical compositions comprising said combinations, as well as to use of these combinations for the manufacture of a medicament for treatment of proliferative disorders. In another aspect, the present invention relates to novel xylose compounds, to pharmaceutical compositions comprising said compounds, and to use of these compounds for the manufacture of a medicament or the treatment of proliferative disorders.