1. Merck Research Laboratories, 2015 Galloping Hill Road, MS 2545, Kenilworth, NJ 07033-0539, USA;2. Merck Research Laboratories, San Raffaele Science Park, Via Olgettina, 58, 20132 Milan, Italy
Abstract:
High throughput screening identified the pyridothienopyrimidinone 1 as a ligand for the metabotropic glutamate receptor 1 (mGluR1 = 10 nM). Compound 1 has an excellent in vivo profile; however, it displays unfavorable pharmacokinetic issues and metabolic stability. Therefore, using 1 as a template, novel analogues (10i) were prepared. These analogues displayed improved oral exposure and activity in the Spinal Nerve Ligation (SNL) pain model.