Structural requirements for the antitubercular quaternized triflupromazine pharmacophore
作者:Dominique L. Kunciw、Jacob J. Liechty、Miguel O. Mitchell、Baojie Wan、Scott G. Franzblau
DOI:10.1016/j.bmcl.2012.06.095
日期:2012.9
Quaternized triflupromazine derivatives (QTDs) must possess benzyl groups attached to the quaternary nitrogen in order to have significant antitubercular potency. Replacing the quaternary amine with a triazole abolishes antitubercular activity. A modest halogen substitution effect exists, with the 4-bromophenyl QTD 3 having the best selectivity index (>21). All N-benzyl QTDs 1-4 similarly inhibit non-replicating, persistent Mycobacterium tuberculosis with MIC <8 mu M, and compounds 1-3 were all nontoxic to mammalian cells in vitro (IC50 >128 mu M). (C) 2012 Elsevier Ltd. All rights reserved.