Journal
JOURNAL OF MEDICINAL CHEMISTRY
Volume 46, Issue 8, Pages 1470-1477Publisher
AMER CHEMICAL SOC
DOI: 10.1021/jm020412d
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- NIDDK NIH HHS [R01-DK49108] Funding Source: Medline
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The impact of altering the octanol-water partition properties (log P) of analogues of desazadesferrithiocin, (S)-4,5-dihydro-2-(2-hydroxyphenyl)-4-methyl-4-thiazolecarboxylic acid, on the ligands iron clearing properties is described. Increasing chelator lipophilicity can both substantially augment iron clearing efficiency in Cebus apella primates as well as alter the mode of iron excretion, favoring fecal over urinary output. The complications of iron overload are often associated with the metal's interaction with hydrogen peroxide, generating hydroxyl radicals (Fenton chemistry) and, ultimately, other related deleterious species. In fact, some iron chelators actually promote this chemistry. All of the compounds synthesized and tested in the current study are shown to be both inhibitors of the iron-mediated oxidation of ascorbate, thus removing the metal from the Fenton cycle, and effective radical scavengers.
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