Goodacre Simon C, Hallett David J, Carling Robert W, Castro José L, Reynolds David S, Pike Andrew, Wafford Keith A, Newman Robert, Atack John R, Street Leslie J
Neuroscience Research Centre, Merck, Sharp and Dohme Research Laboratories, Terlings Park, Eastwick Road, Harlow, Essex CM20 2QR, UK.
Bioorg Med Chem Lett. 2006 Mar 15;16(6):1582-5. doi: 10.1016/j.bmcl.2005.12.027. Epub 2005 Dec 27.
Imidazo[1,2-a]pyrazin-8-ones, imidazo[1,2-d][1,2,4]triazin-8-ones and imidazo[2,1-f][1,2,4]triazin-8-ones are high affinity GABA(A) agonists. Compound 16d has good oral bioavailability in rat, functional selectivity for the GABA(A)alpha2 and alpha3-subtypes and is anxiolytic in a conditioned animal model of anxiety with minimal sedation observed at full BZ binding site occupancy.
咪唑并[1,2 - a]吡嗪 - 8 - 酮、咪唑并[1,2 - d][1,2,4]三嗪 - 8 - 酮和咪唑并[2,1 - f][1,2,4]三嗪 - 8 - 酮是高亲和力的GABA(A)激动剂。化合物16d在大鼠中具有良好的口服生物利用度,对GABA(A)α2和α3亚型具有功能选择性,并且在焦虑的条件动物模型中具有抗焦虑作用,在完全占据苯二氮䓬结合位点时观察到的镇静作用最小。