Antibacterial Small Molecules That Potently Inhibit
<i>Staphylococcus aureus</i>
Lipoteichoic Acid Biosynthesis
作者:George A. Naclerio、Caroline W. Karanja、Clement Opoku‐Temeng、Herman O. Sintim
DOI:10.1002/cmdc.201900053
日期:2019.5.17
The rise of antibiotic resistance, especially in Staphylococcusaureus, and the increasing death rate due to multiresistant bacteria have been well documented. The need for new chemical entities and/or the identification of novel targets for antibacterial drug development is high. Lipoteichoic acid (LTA), a membrane-attached anionic polymer, is important for the growth and virulence of many Gram-positive
Ultrapotent Inhibitor of <i>Clostridioides difficile</i> Growth, Which Suppresses Recurrence <i>In Vivo</i>
作者:George A. Naclerio、Nader S. Abutaleb、Daoyi Li、Mohamed N. Seleem、Herman O. Sintim
DOI:10.1021/acs.jmedchem.0c01198
日期:2020.10.22
Clostridioides difficile is the leading cause of healthcare-associated infection in the U.S. and considered an urgent threat by the Centers for Disease Control and Prevention (CDC). Only two antibiotics, vancomycin and fidaxomicin, are FDA-approved for the treatment of C. difficile infection (CDI), but these therapies still suffer from high treatment failure and recurrence. Therefore, new chemical entities to treat CDI are needed. Trifluoromethylthio-containing N-(1,3,4-oxadiazol-2-yl)benzamides displayed very potent activities [sub-μg/mL minimum inhibitory concentration (MIC) values] against Gram-positive bacteria. Here, we report remarkable antibacterial activity enhancement via halogen substitutions, which afforded new anti-C. difficile agents with ultrapotent activities [MICs as low as 0.003 μg/mL (0.007 μM)] that surpassed the activity of vancomycin against C. difficile clinical isolates. The most promising compound in the series, HSGN-218, is nontoxic to mammalian colon cells and is gut-restrictive. In addition, HSGN-218 protected mice from CDI recurrence. Not only does this work provide a potential clinical lead for the development of C. difficile therapeutics but also highlights dramatic drug potency enhancement via halogen substitution.
COMPOUNDS, COMPOSITIONS, AND METHODS
申请人:[en]DENALI THERAPEUTICS INC.
公开号:WO2024108155A2
公开(公告)日:2024-05-23
The present disclosure relates generally to small molecule modulators of ion channels (TMEM-175) and their use as therapeutic agents.
Singh; Srivastava; Singh, Indian Journal of Chemistry, Section B: Organic Chemistry Including Medicinal Chemistry, 2001, vol. 40, # 2, p. 159 - 162