Discovery of TD-8954, a clinical stage 5-HT4 receptor agonist with gastrointestinal prokinetic properties
作者:R. Murray McKinnell、Scott R. Armstrong、David T. Beattie、Paul R. Fatheree、Daniel D. Long、Daniel G. Marquess、Jeng-Pyng Shaw、Ross G. Vickery
DOI:10.1016/j.bmcl.2013.05.018
日期:2013.7
The discovery of a series of 5-HT4 receptor agonists based on a novel 2-alkylbenzimidazole aromatic core is described. Optimization of the 2-substituent of the benzimidazole ring led to a series of agonists with subnanomolar binding affinity and moderate-to-high intrinsic activity relative to that of 5-HT. Consistent with our previously described multivalent design approach to this target, subsequent optimization of the linker and secondary binding group regions of the series afforded compound 18 (TD-8954), a potent and selective 5-HT4 receptor agonist in vitro with demonstrated prokinetic activity in multiple species. (C) 2013 Elsevier Ltd. All rights reserved.