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 R
1
is X with the proviso that R
2
is y; or R
1
is T with the proviso that R
2
is W; or R
1
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, morphoninyl, pyrrolidinyl or piperazinyl is either unsubstituted or substituted with one to three C
1
to C
6
alkyl groups. X is C
3
-C
6
cycloalkyl; Y is selected from the group consisting of C, to C
6
cycloalkyl; C
1
to C
6
alkyl, and C
1
to C
6
alkyl monosubstituted with a C
3
-C
6
cycloalkyl; T is C
1
to C
6
alkyl; W is C
3
-C
6
cycloalkyl; R
3
is selected from the group consisting of hydrogen and C
1
to C
6
alkyl; R
4
is selected from the group consisting of hydrogen and C
1
to C
6
alkyl; R
5
is selected from the group consisting of hydrogen and C
1
to C
6
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
铁离子。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为X,但R2为y;或R1为T,但R2为W;或R1为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的或用1至3个C1至C6烷基基团取代的。X为C3-C6环烷基;Y选自由C到C6环烷基;C1到C6烷基和C1到C6烷基单取代的C3-C6环烷基;T为C1到C6烷基;W为C3-C6环烷基;R3选自氢和C1到C6烷基的群;R4选自氢和C1到C6烷基的群;R5选自氢和C1到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治疗
铁过载病患者的体内多余
铁的去除。