7-Alkyl-N2-substituted-3-deazaguanines. Synthesis, DNA polymerase III inhibition and antibacterial activity
作者:Wei-chu Xu、George E. Wright、Neal C. Brown、Zheng-yu Long、Cheng-xin Zhi、Sofya Dvoskin、Joseph J. Gambino、Marjorie H. Barnes、Michelle M. Butler
DOI:10.1016/j.bmcl.2011.05.093
日期:2011.7
Several 2-anilino- and 2-benzylamino-3-deaza-6-oxopurines [3-deazaguanines] and selected 8-methyl and 8-aza analogs have been synthesized. 7-Substituted N-2-(3-ethyl-4-methylphenyl)-3-deazaguanines were potent and selective inhibitors of Gram+ bacterial DNA polymerase (pol) IIIC, and 7-substituted N-2-(3,4-dichlorobenzyl)-3-deazaguanines were potent inhibitors of both pol IIIC and pol IIIE from Gram+ bacteria, but weakly inhibited pol IIIE from Gram- bacteria. Potent enzyme inhibitors in both classes inhibited the growth of Gram+ bacteria (MICs 2.5-10 mu g/ml), and were inactive against the Gram- organism Escherichia coli. Several derivatives had moderate protective activity in Staphylococcus aureus-infected mice. (C) 2011 Elsevier Ltd. All rights reserved.