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Bioorg Med Chem ; 19(1): 211-20, 2011 Jan 01.
Artículo en Inglés | MEDLINE | ID: mdl-21163661

RESUMEN

An elevated level of blood uric acid (hyperuricemia) is the underlying cause of gout. Xanthine oxidase is the key enzyme that catalyzes the oxidation of hypoxanthine to xanthine and then to uric acid. Allopurinol, a widely used xanthine oxidase inhibitor is the most commonly used drug to treat gout. However, a small but significant portion of the population suffers from adverse effects of allopurinol that includes gastrointestinal upset, skin rashes and hypersensitivity reactions. Moreover, an elevated level of uric acid is considered as an independent risk factor for cardiovascular diseases. Therefore use of allopurinol-like drugs with minimum side effects is the ideal drug of choice against gout. In this study, we report the synthesis of a series of pyrimidin-5-one analogues as effective and a new class of xanthine oxidase inhibitors. All the synthesized pyrimidin-5-one analogues are characterized by spectroscopic techniques and elemental analysis. Four (6a, 6b, 6d and 6f) out of 20 synthesized molecules in this class showed good inhibition against three different sources of xanthine oxidase, which were more potent than allopurinol based on their respective IC(50) values. Molecular modeling and docking studies revealed that the molecule 6a has very good interactions with the Molybdenum-Oxygen-Sulfur (MOS) complex a key component in xanthine oxidase. These results highlight the identification of a new class of xanthine oxidase inhibitors that have potential to be more efficacious, than allopurinol, to treat gout and possibly against cardiovascular diseases.


Asunto(s)
Inhibidores Enzimáticos/farmacología , Supresores de la Gota/farmacología , Pirimidinonas/farmacología , Xantina Oxidasa/antagonistas & inhibidores , Inhibidores Enzimáticos/síntesis química , Supresores de la Gota/síntesis química , Espectroscopía de Resonancia Magnética , Espectrometría de Masas , Pirimidinonas/síntesis química , Espectrofotometría Infrarroja
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