[EN] CYCLOALKYL DERIVATIVES OF 3-HYDROXY-4-PYRIDINONES<br/>[FR] DERIVES CYCLOALKYLE DE 3-HYDROXY-4-PYRIDINONES
申请人:APOTEX INC
公开号:WO2005049609A1
公开(公告)日:2005-06-02
The present invention provides an cycloalkyl derivative of 3-hydroxy-4-pyridinone which is useful for the chelation of metal ions such as iron. Its preparation and use is described. In particular, the invention concerns the removal of iron in chemical and biological systems including chelating agents having the formula (I); wherein R1 is X with the proviso that R2 is Y; or R1 is T with the proviso that R2 is W; or R1 is X with the proviso that R 2 R 5 N when taken together form a heterocyclic ring selected from piperidinyl, morpholinyl, pyrrolidinyl or piperazinyl, wherein the group piperidinyl, morpholinyl, pyrrolidinyl or piperazinyl is either unsubstituted or substituted with one to three C1 to C6 alkyl groups. X is C3-C6 cycloalkyl; Y is selected from the group consisting of C1 to C6 cycloalkyl; C1 to C6 alkyl, and C1 to C6 alkyl monosubstituted with a C3-C6 cycloalkyl; T is C1 to C6 alkyl; W is C3-C6 cycloalkyl; R3 is selected from the group consisting of hydrogen and C1 to C6 alkyl; R4 is selected from the group consisting of hydrogen and C1 to C6 alkyl; R5 is selected from the group consisting of hydrogen and C1 to C6 alkyl; and its pharmaceutically acceptable salt thereof. Pharmaceutical compositions of such compounds are useful in the removal of excess body iron from patients with iron overload diseases.
本发明提供了一种3-羟基-4-吡啶酮的环烷基衍生物,可用于螯合金属离子,如铁。描述了其制备和用途。特别是,本发明涉及化学和生物系统中铁的去除,包括具有式(I)的螯合剂;其中R1是X,但R2是Y;或R1是T,但R2是W;或R1是X,但R2R5N在一起形成从哌啶基,吗啉基,吡咯烷基或哌嗪基中选择的杂环环,其中哌啶基,吗啉基,吡咯烷基或哌嗪基的基团是未取代或用1至3个C1至C6烷基取代。X是C3-C6环烷基;Y选自由C1至C6环烷基;C1至C6烷基和C1至C6烷基单取代的C3-C6环烷基;T是C1至C6烷基;W是C3-C6环烷基;R3选自氢和C1至C6烷基的群;R4选自氢和C1至C6烷基的群;R5选自氢和C1至C6烷基的群;以及其药学上可接受的盐。这些化合物的制药组合物可用于从铁过载病患者中去除体内过量的铁。