title: Structure-activity relationships of oxygenated morphinans. III. An exploration of the effect of the aromatic oxygen and 6-keto group on antinociceptive activity, receptor affinity, and narcotic antagonism.
mesh_terms: D000818:Animals; D001921:Brain / Q000187:drug effects; D008253:Macaca mulatta; D008297:Male; D051379:Mice; D009019:Morphinans / Q000494:pharmacology*; D009619:Nociceptors / Q000187:drug effects; D011957:Receptors, Opioid / Q000187:drug effects; D013329:Structure-Activity Relationship
chemical_list: D009019:Morphinans; D011957:Receptors, Opioid