title: Studies in the (+)-morphinan series. 5. Synthesis and biological properties of (+)-naloxone.
abstract: (+)-Naloxone was prepared in 26% overall yield in eight steps from (+)-7-bromodihydrocodeinone dimethyl ketal by a synthesis which excluded enantiomeric contamination. (+)-Naloxone was examined in three assay systems and found to have no more than 1/1000(-1)/10 000th the activity of (-)-naloxone; it can, thus, serve to test the stereospecificity of the biochemical and pharmacological actions of (-)-naloxone.
mesh_terms: D000262:Adenylyl Cyclases / Q000378:metabolism; D000818:Animals; D001667:Binding, Competitive; D004558:Electric Stimulation; D006168:Guinea Pigs; D006822:Hybrid Cells / Q000201:enzymology; D066298:In Vitro Techniques; D009119:Muscle Contraction / Q000187:drug effects; D009130:Muscle, Smooth / Q000187:drug effects; D009270:Naloxone / Q000138:chemical synthesis* / Q000378:metabolism / Q000494:pharmacology; D051381:Rats; D011957:Receptors, Opioid / Q000378:metabolism; D013237:Stereoisomerism
chemical_list: D011957:Receptors, Opioid; D009270:Naloxone; D000262:Adenylyl Cyclases