Design, Synthesis, and Activity of a Series of Arylpyrid-3-ylmethanones as Type I Positive Allosteric Modulators of α7 Nicotinic Acetylcholine Receptors
作者:Derk J. Hogenkamp、Thomas A. Ford-Hutchinson、Wen-Yen Li、Edward R. Whittemore、Ryan F. Yoshimura、Minhtam B. Tran、Timothy B. C. Johnstone、Gavin D. Bascom、Hannah Rollins、Lena Lu、Kelvin W. Gee
DOI:10.1021/jm400704g
日期:2013.11.14
A series of novel arylpyrid-3-ylmethanones (7a-aa) were designed as modulators of alpha 7 nicotinic acetylcholine receptors (nAChRs). The methanones were found to be type I positive allosteric modulators (PAMs) of human alpha 7 nAChRs expressed in Xenopus ooctyes. Structure-activity relationship (SAR) studies resulted in the identification of compound 7v as a potent and efficacious type I PAM with maximum modulation of a nicotine EC5 response of 1200% and EC50 = 0.18 mu M. Compound 7z was active in reversing the effect of scopolamine in the novel object recognition (NOR) paradigm with a minimum effective ip dose of 1.0 mg/kg (2.7 mu mol/kg). This effect was blocked by the selective alpha 7 nAChR antagonist methyllycaconitine (MLA). These compounds are nAChRs that may have therapeutic value in restoring impaired sensory Alzheimer's disease. potent type I positive allosteric modulators of alpha 7 gating and cognitive deficits in schizophrenia and Alzheimer's disease.