Inhibition of myeloperoxidase: Evaluation of 2H-indazoles and 1H-indazolones
作者:Aaron Roth、Sean Ott、Kelli M. Farber、Teresa A. Palazzo、Wayne E. Conrad、Makhluf J. Haddadin、Dean J. Tantillo、Carroll E. Cross、Jason P. Eiserich、Mark J. Kurth
DOI:10.1016/j.bmc.2014.09.044
日期:2014.11
Myeloperoxidase (MPO) produces hypohalous acids as a key component of the innate immune response; however, release of these acids extracellularly results in inflammatory cell and tissue damage. The twostep, one-pot Davis-Beirut reaction was used to synthesize a library of 2H-indazoles and 1H-indazolones as putative inhibitors of MPO. A structure-activity relationship study was undertaken wherein compounds were evaluated utilizing taurine-chloramine and MPO-mediated H2O2 consumption assays. Docking studies as well as toxicophore and Lipinski analyses were performed. Fourteen compounds were found to be potent inhibitors with IC50 values < 1 mu M, suggesting these compounds could be considered as potential modulators of pro-oxidative tissue injury pertubated by the inflammatory MPO/H2O2/HOCl/HOBr system. (C) 2014 Elsevier Ltd. All rights reserved.
A Novel and Efficient Synthesis of 2-Aryl-2<i>H</i>-indazoles via SnCl<sub>2</sub>-Mediated Cyclization of 2-Nitrobenzylamines
作者:Da-Qing Shi、Guo-Lan Dou、Sai-Nan Ni、Jing-Wen Shi、Xiao-Yue Li、Xiang-Shan Wang、Hui Wu、Shun-Jun Ji
DOI:10.1055/s-2007-986665
日期:2007.10
A mild, efficient, and novelsynthesis of 2-aryl-2H-indazoles via cyclization of 2-nitrobenzylamines promoted by SnCl 2 ·2H 2 O has been described. This method applies to a wide scope of substrates containing electron-donating and electron-withdrawing substituents.
描述了通过 SnCl 2 ·2H 2 O 促进的 2-硝基苄胺的环化反应温和、高效、新颖地合成 2-芳基-2H-吲唑。该方法适用于广泛的含有给电子和吸电子取代基的底物。