Compound Monograph
Morphinans
Morphinans are the polycyclic alkaloid skeleton underlying morphine, codeine and many natural and semi-synthetic opioids.
Where Does It Come From? (1)
Morphinans are naturally occurring alkaloid scaffold (isoquinoline-derived), found in Opium poppy. They are flagged as toxic.
Research & Evidence
“Morphinan” refers not to a single compound but to the fused tetracyclic ring system that forms the core of morphine and its relatives. The naturally occurring members — morphine, codeine and thebaine from the opium poppy — are the templates from which a large family of semi-synthetic and synthetic opioids (such as hydromorphone, oxycodone and dextromethorphan) is derived. Members of this class act primarily at opioid receptors and span a wide range of analgesic, antitussive and other activities depending on the substituents.
Toxicity & Safety
The opioid morphinans carry the well-known hazards of that drug class, including respiratory depression, sedation, dependence and overdose, which can be fatal. Individual compounds differ greatly in potency and risk. Because this entry covers a structural class rather than one substance, safety must be assessed for the specific compound in question.