Journal : J. Med. Chem.
Title : Synthesis and structure-activity relationships of 8-(pyrid-3-yl)pyrazolo[1,5-a]-1,3,5-triazines: potent, orally bioavailable corticotropin releasing factor receptor-1 (CRF1) antagonists.
Year : 2009
Volume : 52
Issue : 9
First Page : 3084
Last Page : 3092
Authors : Gilligan PJ, Clarke T, He L, Lelas S, Li YW, Heman K, Fitzgerald L, Miller K, Zhang G, Marshall A, Krause C, McElroy JF, Ward K, Zeller K, Wong H, Bai S, Saye J, Grossman S, Zaczek R, Arneric SP, Hartig P, Robertson D, Trainor G.
Abstract : This report describes the syntheses and structure-activity relationships of 8-(substituted pyridyl)pyrazolo[1,5-a]-1,3,5-triazine corticotropin releasing factor receptor-1 (CRF(1)) receptor antagonists. These CRF(1) receptor antagonists may be potential anxiolytic or antidepressant drugs. This research resulted in the discovery of compound 13-15, which is a potent, selective CRF(1) antagonist (hCRF(1) IC(50) = 6.1 +/- 0.6 nM) with weak affinity for the CRF-binding protein and biogenic amine receptors. This compound also has a good pharmacokinetic profile in dogs. Analogue 13-15 is orally effective in two rat models of anxiety: the defensive withdrawal (situational anxiety) model and the elevated plus maze test. Analogue 13-15 has been advanced to clinical trials.
