active site of the enzyme and that quite bulky aglycons are accepted. By separating the aromatic aglycon from the xylose moiety by linkers, a trend towards increased galactosylation with increased linker length is observed. The galactosylation is influenced by the identity and position of substituents in the aromatic framework, and generally, only xylosides with beta-glycosidic linkages function as good
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.
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.
In order to investigate the selective antiproliferative effects shown by 2-(6-hydroxynaphthyl)-beta-D-xylopyranoside the 14 possible beta-D-xylopyranosidic compounds were synthesized on solid support. An aminomethylated polystyrene resin was converted into an acid chloride resin and then esterified using dihydroxynaphthalene. The free hydroxy group was then xylosylated Under BF3.OEt2 mediated conditions. The xyloside was deprotected and simultaneously cleaved off the resin Using NaOMe/MeOH. Final purification using reverse phase HPLC gave the pure xylosides in 6-42% yield with Virtually no formation of alpha-xylosides. (C) 2002 Elsevier Science Ltd. All rights reserved.