Discovery and biological evaluation of novel 1,4-benzoquinone and related resorcinol derivatives that inhibit 5-lipoxygenase

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• 作者：Rosanna Filosa ; Antonella Peduto ; Polamarasetty Aparoy ; Anja M. Schaible ; Susann Luderer ; Verena Krauth ; Carmen Petronzi ; Antonio Massa ; Mario de Rosa ; Pallu Reddanna ; Oliver Werz
• 关键词：5-Lipoxygenase ; Leukotriene ; Molecular docking ; Benzoquinone ; Resorcinol
• 刊名：European Journal of Medicinal Chemistry
• 出版年：2013
• 出版时间：September, 2013
• 年：2013
• 卷：67
• 期：Complete
• 页码：269-279
• 全文大小：1040 K

文摘

5-Lipoxygenase (5-LO), an enzyme that catalyzes the initial steps in the biosynthesis of pro-inflammatory leukotrienes, is an attractive drug target for the pharmacotherapy of inflammatory and allergic diseases. Here, we present the discovery and biological evaluation of novel series of 1,4-benzoquinones and respective resorcinol derivatives that efficiently inhibit human 5-LO, with little effects on other human lipoxygenases. SAR analysis revealed that the potency of the compounds strongly depends on structural features of the lipophilic residues, where bulky naphthyl or dibenzofuran moieties favor 5-LO inhibition. Among the 1,4-benzoquinones, compound Ig 5-[(2-naphthyl)methyl]-2-hydroxy-2,5-cyclohexadiene-1,4-dione potently blocked 5-LO activity in cell-free assays with IC₅₀?=?0.78?¦ÌM, and suppressed 5-LO product synthesis in polymorphonuclear leukocytes with IC₅₀?=?2.3?¦ÌM. Molecular docking studies suggest a concrete binding site for Ig in 5-LO where select ¦Ð-¦Ð interactions along with hydrogen bond interactions accomplish binding to the active site of the enzyme. Together, our study reveals novel valuable 5-LO inhibitors with potential for further preclinical assessment as anti-inflammatory compounds.