Novel chroman and tetrahydroquinoline ureas were synthesized and evaluated for their activity as TRPV1 antagonists. It was found that aryl substituents on the 7- or 8-position of both bicyclic scaffolds imparted the best in vitro potency at TRPV1. The most potent chroman ureas were assessed in chronic and acute pain models, and compounds with the ability to cross the blood-brain barrier were shown to be highly efficacious. The tetrahydroquinoline ureas were found to be potent CYP3A4 inhibitors, but replacement of bulky substituents at the nitrogen atom of the tetrahydroisoquinoline moiety with small groups such as methyl can minimize the inhibition. (C) 2011 Elsevier Ltd. All rights reserved.
机构:
Glenmark Res Ctr, Navi Mumbai 400709, IndiaMonmouth Med Ctr, Dept Pathol, Long Branch, NJ 07740 USA
Khairatkar-Joshi, Neelima
Szallasi, Arpad
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机构:
Monmouth Med Ctr, Dept Pathol, Long Branch, NJ 07740 USA
Drexel Univ, Coll Med, Dept Pathol, Philadelphia, PA 19102 USAMonmouth Med Ctr, Dept Pathol, Long Branch, NJ 07740 USA