A series of arylglycine-based analogs was synthesized and tested for TRPM8 antagonism in a cell-based functional assay. Following structure-activity relationship studies in vitro, a number of compounds were identified as potent TRPM8 antagonists and were subsequently evaluated in an in vivo pharmacodynamic assay of icilin-induced 'wet-dog' shaking in which compound 12 was fully effective. TRPM8 antagonists of the type described here may be useful in treating pain conditions wherein cold hypersensitivity is a dominant feature. (C) 2013 Elsevier Ltd. All rights reserved.
sterically hindered 2-aryl-substituted pyrrolines. Using (R)-selective ScIR and (S)-selective SvIR, various chiral 2-aryl-substituted pyrrolidines with excellent enantioselectivity (>99% ee) were stereocomplementarily synthesized in good yield (60-80%), demonstrating the feasibility of IREDs for generating pharmaceutically relevant chiral 2-aryl-substituted pyrrolidine intermediates.