Pirinixic Acid Derivatives as Novel Dual Inhibitors of Microsomal Prostaglandin E<sub>2</sub> Synthase-1 and 5-Lipoxygenase
作者:Andreas Koeberle、Heiko Zettl、Christine Greiner、Mario Wurglics、Manfred Schubert-Zsilavecz、Oliver Werz
DOI:10.1021/jm801085s
日期:2008.12.25
Dual inhibition of the prostaglandin (PG) and leukotriene (LT) biosynthetic pathway is supposed to be superior over single interference, both in terms of efficacy and side effects. Here, we present a novel class of dual microsomal PGE(2) synthase-1/5-lipoxygenase (5-LO) inhibitors based on the structure of pirinixic acid [PA, 2-(4-chloro-6-(2.3-dimethylphenylamino)pyrimidin-2-ylthio)acetic acid, compound 1]. Target-oriented structural modification of 1, particularly a substitution with extended n-alkyl or bulky aryl substituents and concomitant replacement of the 2.3-dimethylaniline by a biphenyl-4-yl-methane-amino residue, resulted in potent suppression of mPGES-1 and 5-LO activity, exemplified by 2-(4-(biphenyl-4-ylmethylamino)-6-chloropyrimidin-2-ylthio)octanoic acid (7b, IC50 = 1.3 and 1 mu M, respectively). Select compounds also potently reduced PGE(2) and 5-LO product formation in intact cells. Importantly, inhibition of cyclooxygenases-1/2 was significantly less pronounced. Taken together, these pirinixic acid derivatives constitute a novel class of dual mPGES-1/5-LO inhibitors with a promising pharmacologial profile and a potential for therapeutic use.