Structure-based design of new DHFR-based antibacterial agents: 7-aryl-2,4-diaminoquinazolines
作者:Xiaoming Li、Mark Hilgers、Mark Cunningham、Zhiyong Chen、Michael Trzoss、Junhu Zhang、Lucy Kohnen、Thanh Lam、Chris Creighton、Kedar GC、Kirk Nelson、Bryan Kwan、Mark Stidham、Vickie Brown-Driver、Karen J. Shaw、John Finn
DOI:10.1016/j.bmcl.2011.07.059
日期:2011.9
Dihydrofolate reductase (DHFR) inhibitors such as trimethoprim(TMP) have long played a significant role in the treatment of bacterial infections. Not surprisingly, after decades of use there is now bacterial resistance to TMP and therefore a need to develop novel antibacterial agents with expanded spectrum including these resistant strains. In this study, we investigated the optimization of 2,4-diamnoquinazolines for antibacterial potency and selectivity. Using structure-based drug design, several 7-aryl-2,4-diaminoquinazolines were discovered that have excellent sub-100 picomolar potency against bacterial DHFR. These compounds have good antibacterial activity especially on gram-positive pathogens including TMP-resistant strains. (C) 2011 Elsevier Ltd. All rights reserved.