| abstract |
The present invention relates to the use of a compound according to formula 1 below for the treatment of tumors, cancer and hyperproliferative diseases, conditions or pathological conditions where X is H or F; R and R are independently H, an acyl group, a C-C1-6 alkyl or ether group, a phosphate, diphosphate, triphosphate or phosphodiester group, (A) or (B) group where Nu is a radical of a biologically active compound, such as an anti-cancer, antiviral or anti-hyperproliferative compound, thus so that an amino group or a hydroxyl group from said biologically active component forms a phosphate, phosphoramidate, carbonate or urethane group with an adjacent part; each R independently is H, or a C 1-6 alkyl or ether group, preferably a C 1-6 alkyl group; k is 0-12, preferably 0-2; and their pharmaceutically acceptable salts. |