Identification of 3-acyl-2-phenylamino-1,4-dihydroquinolin-4-one derivatives as inhibitors of the phosphatase SerB653 in Porphyromonas gingivalis, implicated in periodontitis
摘要:
The serine phosphatase SerB653 plays a crucial role in the infection of Porphyromonas gingivalis, which contributes to the pathogenesis of periodontitis, an inflammatory disease of teeth-supporting tissues. Because functional loss of SerB653 eliminates the virulence of P. gingivalis, SerB653 inhibitors are considered potential periodontitis therapeutic or preventive agents. To identify SerB653 inhibitors with potent anti-periodontitis activity, we conducted a high-throughput screen of a representative 6800-compound subset of a synthetic chemical library of the Korea Chemical Bank (KCB) for compounds with activity against SerB653. The primary screening yielded 150 hits, and subsequent confirmatory studies identified eight compounds, mainly within a single cluster of 3-acyl-2-phenylamino-1,4-dihydroquinolin-4-one derivatives, that showed greater than 50% inhibition of SerB653 activity at a concentration of 50 mu M. A second screening with a focused library identified 10 compounds with IC50 values less than 10 mu M. In antibacterial tests, three of these compounds showed a minimum inhibitory concentration against P. gingivalis growth of 5-50 nM. (C) 2012 Elsevier Ltd. All rights reserved.
A methodology for the synthesis of highly functionalized 2- and 4-aminoquinoline derivatives
作者:Bo Hyun Hwang、Sung Hee Park、Eun Bok Choi、Chwang Siek Pak、Hyeon Kyu Lee
DOI:10.1016/j.tet.2008.05.014
日期:2008.7
for the synthesis of 2- and 4-aminoquinoline derivatives, which takes advantage of selective activation of 2- or 4-substituent of 2-methylsulfanyl-3-acyl-1H-quinolin-4-one 1, has been developed. Since a procedure for formation of 3-aminoquinolinones from the 4-quinolinone 1 was described previously, the new methodology comprises a general methodology for the selective syntheses of three isomeric 2-, 3-