Document Report Card

ID: ALA2150960

Journal: ACS Med Chem Lett

Title: Short-acting T-type calcium channel antagonists significantly modify sleep architecture in rodents.

Authors: Yang ZQ, Schlegel KA, Shu Y, Reger TS, Cube R, Mattern C, Coleman PJ, Small J, Hartman GD, Ballard J, Tang C, Kuo Y, Prueksaritanont T, Nuss CE, Doran S, Fox SV, Garson SL, Li Y, Kraus RL, Uebele VN, Taylor AB, Zeng W, Fang W, Chavez-Eng C, Troyer MD, Luk JA, Laethem T, Cook WO, Renger JJ, Barrow JC.

Abstract: A novel phenyl acetamide series of short-acting T-type calcium channel antagonists has been identified and evaluated using in vitro and in vivo assays. Heterocycle substitutions of the 4-position of the phenyl acetamides afforded potent and selective antagonists that exhibited desired short plasma half-lives across preclinical species. Lead compound TTA-A8 emerged as a compound with excellent in vivo efficacy as indicated by its significant modulation of rat sleep architecture in an EEG telemetry model, favorable pharmacokinetic properties, and excellent preclinical safety. TTA-A8 recently progressed into human clinical trials, and in line with our predictions, preliminary studies (n = 12) with a 20 mg oral dose afforded a high C max of 1.82 ± 0.274 μM with an apparent terminal half-life of 3.0 ± 1.1 h.

CiteXplore: 24900239

DOI: 10.1021/ml100170e