Recent bioisoteric replacements in histamine H3 receptor ligands with an exchange of the imidazole moiety by a piperidino group as well as of the trimethylene chain in 4-((3- phenoxy) propyl)-lH-imidazole derivatives (proxifan class) by an α, α′-xylendiyl linker represents the starting point in the development of 1-(4-(phenoxymethyl) benzyl) piperidines as a new class of nonimidazole histamine H3 receptor antagonists. According to different ...