title: Analgesics: synthesis of 1-dioxolanoalkylnormeperidines and 1-dioxanoalkylnormeperidines.
mesh_terms: D000700:Analgesics / Q000138:chemical synthesis*; D000818:Animals; D004147:Dioxins / Q000138:chemical synthesis*; D004149:Dioxoles / Q000138:chemical synthesis*; D005260:Female; D008297:Male; D008614:Meperidine / Q000138:chemical synthesis*; D051379:Mice; D051381:Rats
chemical_list: D000700:Analgesics; D004147:Dioxins; D004149:Dioxoles; D008614:Meperidine