Synthesis and anti-inflammatory evaluation of 9-phenoxyacridine and 4-phenoxyfuro[2,3-b]quinoline derivatives. Part 2
作者:Yeh-Long Chen、I-Li Chen、Chih-Ming Lu、Cherng-Chyi Tzeng、Lo-Ti Tsao、Jih-Pyang Wang
DOI:10.1016/s0968-0896(03)00439-5
日期:2003.9
Mast cells, neutrophils and macrophages are important inflammatory cells that have been implicated in the pathogenesis of acute and chronic inflammatory diseases. To explore a novel anti-inflammatory agent, we have synthesized certain 9-phenoxyacridine and 4-phenoxyfuro[2,3-b]quinoline derivatives and evaluated their anti-inflammatory activities. The title compounds were synthesized by reaction of either 9-chloroacridine or 3,4-dichlorofuro[2,3-b]quinoline with appropriate Ar-OH and their anti-inflammatory activities were studied on inhibitory effects on the activation of mast cells, neutrophils and macrophages. Four 9-(4formylphenoxy)acridine derivatives 2b-2e were proved to be more potent than the reference inhibitor, mepacrine for the inhibition of rat peritoneal mast cell degranulation with IC50 values of 6.1, 5.9, 13.5, and 4.7 muM, respectively. Compounds 2c, 3b, 3c, and 5a also showed potent inhibitory activity (IC50 = 4.3-18.3 muM) for the secretion of lysosomal enzyme and P-glucuronidase from neutrophils. In addition, 2d, 3a, and 4 inhibited TNF-alpha formation from the N9 cells (the brain resident macrophages) with IC50 vales less then 10 muM. These results indicated that acridine derivatives exhibited more potent anti-inflammatory activities than their respective furo[2,3-b]quinoline counterparts (4 vs 9; 5a vs 10a; 5b vs 10b). (C) 2003 Elsevier Ltd. All rights reserved.