4-[6-(2-Tertiaryaminoethyl) naphthalen-2-yl] benzonitriles are conformationally constrained histamine H3 receptor antagonists with high potency and selectivity. The analogs were designed around a naphthalene core, with the goal of enhancing lipophilicity and CNS penetration, as compared to a previously reported benzofuran series. The SAR of the tertiary amine moiety is similar to that reported for the benzofuran series, with analogs bearing a 2 ...
[Ellingboe, John W.; Lombardo, Louis J.; Alessi, Thomas R.; Nguyen, Thomas T.; Guzzo, Frieda; et al. Journal of Medicinal Chemistry, 1993 , vol. 36, # 17 p. 2485 - 2493]