Discovery of heterocyclic replacements for the coumarin core of anti-tubercular FadD32 inhibitors
作者:Chao Fang、Katie K. Lee、Raymond Nietupski、Robert H. Bates、Raquel Fernandez-Menendez、Eva Maria Lopez-Roman、Laura Guijarro-Lopez、Yunxing Yin、Zuozhong Peng、James E. Gomez、Stewart Fisher、David Barros-Aguirre、Brian K. Hubbard、Michael H. Serrano-Wu、Deborah T. Hung
DOI:10.1016/j.bmcl.2018.09.037
日期:2018.12
Previous work established a coumarin scaffold as a starting point for inhibition of Mycobacterium tuberculosis (Mtb) FadD32 enzymatic activity. After further profiling of the coumarin inhibitor 4 revealed chemical instability, we discovered that a quinoline ring circumvented this instability and had the advantage of offering additional substitution vectors to further optimize. Ensuing SAR studies gave rise to quinoline-2-carboxamides with potent anti-tubercular activity. Further optimization of ADME/PK properties culminated in 21b that exhibited compelling in vivo efficacy in a mouse model of Mtb infection.