Discovery of <b>BAY-390</b>, a Selective CNS Penetrant Chemical Probe as Transient Receptor Potential Ankyrin 1 (TRPA1) Antagonist
Stefanie Mesch, Daryl S. Walter, Alexis Laux‐Biehlmann, Daniel Basting, Stuart Flanagan, Hideki Miyatake Ondozabal, Stefan Bäurle, Christopher E. Pearson, James E. Jenkins, Philip Elves, Stephen D. Hess, Anne-Marie Coelho, Andrea Rotgeri, Ulrich Bothe, Schanila Nawaz, Thomas M. Zollner, Andreas Steinmeyer
Abstract
High Resolution Image Download MS PowerPoint Slide Transient receptor potential ankyrin 1 (TRPA1) is a voltage-dependent, ligand-gated ion channel, and activation thereof is linked to a variety of painful conditions. Preclinical studies have demonstrated the role of TRPA1 receptors in a broad range of animal models of acute, inflammatory, and neuropathic pain. In addition, a clinical study using the TRPA1 antagonist GRC-17536 (Glenmark Pharmaceuticals) demonstrated efficacy in a subgroup of patients with painful diabetic neuropathy. Consequently, there is an increasing interest in TRPA1 inhibitors as potential analgesics. Herein, we report the identification of a fragment-like hit from a high-throughput screening (HTS) campaign and subsequent optimization to provide a novel and brain-penetrant TRPA1 inhibitor (compound 18, BAY-390 ), which is now being made available to the research community as an open-source in vivo probe.