levorphanol   Click here for help

GtoPdb Ligand ID: 7595

Synonyms: (-) 3-hydroxy-N-methylmorphinan | Levo-Dromoran® | levorphanol hydrochloride | levorphanol tartrate
Approved drug
levorphanol is an approved drug (FDA (1953))
Compound class: Synthetic organic
Comment: Levorphanol is an opioid analgesic. Chemically it is the levorotatory optical isomer of racemorphan (PubChem CID 3918).
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2D Structure
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Physico-chemical Properties
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Hydrogen bond acceptors 1
Hydrogen bond donors 1
Rotatable bonds 0
Topological polar surface area 23.47
Molecular weight 257.18
XLogP 3.29
No. Lipinski's rules broken 0
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Canonical SMILES Oc1ccc2c(c1)C13CCCCC3C(C2)N(CC1)C
Isomeric SMILES Oc1ccc2c(c1)[C@]13CCCC[C@H]3[C@@H](C2)N(CC1)C
InChI InChI=1S/C17H23NO/c1-18-9-8-17-7-3-2-4-14(17)16(18)10-12-5-6-13(19)11-15(12)17/h5-6,11,14,16,19H,2-4,7-10H2,1H3/t14-,16+,17+/m0/s1
No information available.
Summary of Clinical Use Click here for help
Used to treat moderate to severe pain, including potentially, neuropathic pain [3].
Mechanism Of Action and Pharmacodynamic Effects Click here for help
Levorphanol is a μ opioid receptor agonist. Activation of this receptor on central nervous system neurons inhibits intracellular adenylate cyclase. Downstream this leads to reduced calcium influx via membrane calcium channels, and increased potassium permeability by opening membrane potassium channels. This ultimately leads to hyperpolarization of the cell membrane potential and suppression of action potential transmission of ascending pain pathways. Antagonist activity at NMDA receptors may be useful in the treatment of neuropathic pain which is unresponsive to other pain medications [3].
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