Identification and initial optimization of inhibitors of Clostridium difficile (C. difficile) toxin B (TcdB).

Identification and initial optimization of inhibitors of Clostridium difficile (C. difficile) toxin B (TcdB).
Bioorg Med Chem Lett. 2018 Jan 05;:
Authors: Letourneau JJ, Stroke IL, Hilbert DW, Sturzenbecker LJ, Marinelli BA, Quintero JG, Sabalski J, Ma L, Diller DJ, Stein PD, Webb ML
Abstract
The discovery, synthesis and preliminary structure-activity relationship (SAR) of a novel class of inhibitors of Clostridium difficile (C. difficile) toxin B (TcdB) is described. A high throughput screening (HTS) campaign resulted in the identification of moderately active screening hits 1-5 the most potent of which was compound 1 (IC50 = 0.77 µM). In silico docking of an early analog offered suggestions for structural modification which resulted in the design and synthesis of highly potent analogs 13j(IC50 = 1 nM) and 13 l(IC50 = 7 nM) which were chosen as leads for further optimization.
PMID: 29331267 [PubMed - as supplied by publisher]

Source: Bioorganic and Medicinal Chemistry Letters - January 5, 2018 Category: Chemistry Authors: Letourneau JJ, Stroke IL, Hilbert DW, Sturzenbecker LJ, Marinelli BA, Quintero JG, Sabalski J, Ma L, Diller DJ, Stein PD, Webb ML Tags: Bioorg Med Chem Lett Source Type: research