Regioselectivity and relative substrate activity of difluoroquinolines containing fluorine atoms in benzene ring in reaction with sodium methoxide
作者:Larisa V. Politanskaya、Lyudmila A. Malysheva、Irina V. Beregovaya、Irina Yu. Bagryanskaya、Yuri V. Gatilov、Evgenij V. Malykhin、Vitalij D. Shteingarts
DOI:10.1016/j.jfluchem.2005.08.010
日期:2005.12
Methoxydefluorination of 5,7-, 6,7-, 6,8-, and 5,8-difluoroquinoline (1-4) by the action of sodium methoxide has been studied in liquid ammonia and Me,SO. The regioselectivity of methoxydefluorination of I and 2 in the temperature interval 218-240 K in liquid ammonia and 1 and 4 in the interval 298-378 K in Me2SO as well as the activity correlation of individual reaction centers in different substrates have been established as enthalpically controlled. The overall pattern of relative reactivity is consistent with the ab initio (RHF/6-31G*) calculated relative stabilities and electronic structures of the sigma-complexes formed by the substrates with the hydroxide anion as a model nucleophile. (c) 2005 Elsevier B.V. All rights reserved.
Targeting NOX2 with Bivalent Small-Molecule p47phox–p22phox Inhibitors
作者:Jie Zang、Felix Peters、Yves Cambet、Eugenia Cifuentes-Pagano、Munira Mohamed Shishay Hissabu、Christopher M. Dustin、Lars Henrik Svensson、Martin Mariboe Olesen、Mathias Feldt Lomholt Poulsen、Stig Jacobsen、Pernille Sønderby Tuelung、Dilip Narayanan、Annette Eva Langkilde、Michael Gajhede、Patrick J. Pagano、Vincent Jaquet、Frederik Vilhardt、Anders Bach