Synthesis and evaluation of 1-hydroxy/methoxy-4-methyl-2-phenyl-1H-imidazole-5-carboxylic acid derivatives as non-purine xanthine oxidase inhibitors.

Abstract:

:Xanthine oxidase is a key enzyme that catalyses hypoxanthine and xanthine to uric acid, whose overproduction leads to the gout-causing hyperuricemia. In this study, a series of 1-hydroxy/methoxy-4-methyl-2-phenyl-1H-imidazole-5-carboxylic acid derivatives (4a-4k and 6a-6k) was synthesized and evaluated for their inhibitory potency against xanthine oxidase. The 1-hydroxyl substituted derivatives 4a-4k showed excellent inhibitory potency with IC50 values ranging from 0.003 μM to 1.2 μM, with compounds 4d (IC₅₀ = 0.003 μM), 4e (IC₅₀ = 0.003 μM), and 4f (IC₅₀ = 0.006 μM) manifesting the most potent xanthine oxidase inhibitory potency that were comparable with that of Febuxostat (IC₅₀ = 0.01 μM). Lineweaver-Burk plot analysis revealed that representative compound 4f acted as a mixed-type inhibitor for xanthine oxidase. The basis of significant inhibition of xanthine oxidase by 4f was rationalized by its molecular docking into the active site of xanthine dehydrogenase.

journal_name

Eur J Med Chem

authors

Chen S,Zhang T,Wang J,Wang F,Niu H,Wu C,Wang S

doi

10.1016/j.ejmech.2015.08.056

subject

Has Abstract

pub_date

2015-10-20 00:00:00

pages

343-53

eissn

0223-5234

issn

1768-3254

pii

S0223-5234(15)30239-7

journal_volume

103

pub_type

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