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Identification of novel benzimidazole derivatives as inhibitors of leukotriene biosynthesis by virtual screening targeting 5-lipoxygenase-activating protein (FLAP).

Abstract：

:Pharmacological suppression of leukotriene biosynthesis by 5-lipoxygenase (5-LO)-activating protein (FLAP) inhibitors is a promising strategy to intervene with inflammatory, allergic and cardiovascular diseases. Virtual screening targeting FLAP based on a combined ligand- and structure-based pharmacophore model led to the identification of 1-(2-chlorobenzyl)-2-(1-(4-isobutylphenyl)ethyl)-1H-benzimidazole (7) as developable candidate. Compound 7 potently suppressed leukotriene formation in intact neutrophils (IC(50)=0.31 μM) but essentially failed to directly inhibit 5-LO suggesting that interaction with FLAP causes inhibition of leukotriene synthesis. For structural optimization, a series of 46 benzimidazole-based derivatives of 7 were synthesized leading to more potent analogues (70-72, 82) with IC(50)=0.12-0.19 μM in intact neutrophils. Together, our results disclose the benzimidazole scaffold bearing an ibuprofen fingerprint as a new chemotype for further development of anti-leukotriene agents.

journal_name

Bioorg Med Chem

journal_title

Bioorganic & medicinal chemistry

authors

Banoglu E,Çalişkan B,Luderer S,Eren G,Özkan Y,Altenhofen W,Weinigel C,Barz D,Gerstmeier J,Pergola C,Werz O

doi

10.1016/j.bmc.2012.04.048

subject

Has Abstract

pub_date

2012-06-15 00:00:00

pages

3728-41

issue

12

eissn

0968-0896

issn

1464-3391

pii

S0968-0896(12)00345-8

journal_volume

20

pub_type

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