Circumventing seizure activity in a series of G protein coupled receptor 119 (GPR119) agonists.


Agonism of GPR119 is viewed as a potential therapeutic approach for the treatment of type II diabetes and other elements of metabolic syndrome. During progression of a previously disclosed candidate 1 through mice toxicity studies, we observed tonic-clonic convulsions in several mice at high doses. An in vitro hippocampal brain slice assay was used to assess the seizure liability of subsequent compounds, leading to the identification of an aryl sulfone as a replacement for the 3-cyano pyridyl group. Subsequent optimization to improve the overall profile, specifically with regard to hERG activity, led to alkyl sulfone 16. This compound did not cause tonic-clonic convulsions in mice, had a good pharmacokinetic profile, and displayed in vivo efficacy in murine models. Importantly, it was shown to be effective in wild-type (WT) but not GPR119 knockout (KO) animals, consistent with the pharmacology observed being due to agonism of GPR119.

DOI: 10.1021/jm5011012

Cite this paper

@article{Scott2014CircumventingSA, title={Circumventing seizure activity in a series of G protein coupled receptor 119 (GPR119) agonists.}, author={James S. Scott and Suzanne S Bowker and Katy J. Brocklehurst and Hayley S. Brown and David S Clarke and Alison Easter and Anne Ertan and Kristin Goldberg and Julian A Hudson and Stefan L Kavanagh and David Laber and Andrew G Leach and Philip A Macfaul and Elizabeth A. Martin and Darren McKerrecher and Paul Schofield and Per H Svensson and Joanne L Teague}, journal={Journal of medicinal chemistry}, year={2014}, volume={57 21}, pages={8984-98} }