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Substituted fused bicyclic pyrrolizinones as potent, orally bioavailable hNK1 antagonists. | LitMetric

AI Article Synopsis

Article Abstract

Previous work on human NK(1) (hNK(1)) antagonists in which the core of the structure is a 5,5-fused pyrrolizinone has been disclosed. The structural-activity-relationship studies on simple alpha- and beta-substituted compounds of this series provided several potent and bioavailable hNK(1) antagonists that displayed excellent brain penetration as observed by their good efficacy in the gerbil foot-tapping (GFT) model assay. Several of these compounds exhibited 100% inhibition of the foot-tapping response at 0.1 and 24h with ID(50)'s of less than 1 mpk. One particular alpha-substituted compound (2b) had an excellent pharmacokinetic profile across preclinical species with reasonable in vivo functional activity and minimal ancillary activity.

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http://dx.doi.org/10.1016/j.bmcl.2010.01.065DOI Listing

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