Product Name

Zopiclone

Name: Zopiclone - LGM Pharma
SKU: 43200-80-2

CAS Number

43200-80-2

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Product Name:

Zopiclone

CAS Number:

43200-80-2

Indication:

For the short-term treatment of insomnia.

Mode of Action:

Zopiclone exerts its action by binding on the benzodiazepine receptor complex and modulation of the GABABZ receptor chloride channel macromolecular complex. Both zopiclone and benzodiazepines act indiscriminately at the benzodiazepine binding site on _1, _2, _3 and _5 GABAA containing receptors as full agonists causing an enhancement of the inhibitory actions of GABA to produce the therapeutic (hypnotic and anxiolytic) and adverse effects of zopiclone.

Pharmacodynamics:

Zopiclone is a nonbenzodiazepine hypnotic from the pyrazolopyrimidine class and is indicated for the short-term treatment of insomnia. While Zopiclone is a hypnotic agent with a chemical structure unrelated to benzodiazepines, barbiturates, or other drugs with known hypnotic properties, it interacts with the gamma-aminobutyric acid-benzodiazepine (GABA_BZ) receptor complex. Subunit modulation of the GABA_BZ receptor chloride channel macromolecular complex is hypothesized to be responsible for some of the pharmacological properties of benzodiazepines, which include sedative, anxiolytic, muscle relaxant, and anticonvulsive effects in animal models. Zopiclone binds selectively to the brain alpha subunit of the GABA A omega-1 receptor.

Metabolism:

Extensively metabolized in the liver via decarboxylation (major pathway), demethylation, and side chain oxidation. Metabolites include an N-oxide derivative (weakly active; approximately 12% of a dose) and an N-desmethyl metabolite (inactive; approximately 16%). Approximately 50% of a dose is converted to other inactive metabolites via decarboxylation. Hepatic microsomal enzymes are apparently not involved in zopiclone clearance.

Toxicity:

Rare individual instances of fatal outcomes following overdose with racemic zopiclone have been reported in European postmarketing reports, most often associated with overdose with other CNS-depressant agent. Signs and symptoms of overdose effects of CNS depressants can be expected to present as exaggerations of the pharmacological effects noted in preclinical testing.

IUPAC:

6-(5-chloropyridin-2-yl)-7-oxo-5H, 6H, 7H-pyrrolo[3, 4-b]pyrazin-5-yl 4-methylpiperazine-1-carboxylate

ATC:

N05CF01

PubChem:

5735

DrugBank:

DB01198 (APRD00356)

Formula:

C₁₇H₁₇ClN₆O₃

Molecular Mass:

388.808

Synonyms:

(+-)-zopiclone Zopiclona [INN-Spanish] Zopiclone [Ban:Inn:Jan] Zopiclonum [INN-Latin]

SMILES:

CN1CCN(CC1)C(=O)OC1N(C(=O)C2=NC=CN=C12)C1=NC=C(Cl)C=C1

AHFS Code:

28:24.9

InChi:

GBBSUAFBMRNDJC-UHFFFAOYSA-N

General Reference:

Liu HJ, Sato K, Shih HC, Shibuya T, Kawamoto H, Kitagawa H: Pharmacologic studies of the central action of zopiclone: effects on locomotor activity and brain monoamines in rats. Int J Clin Pharmacol Ther Toxicol. 1985 Mar;23(3):121-8. Pubmed
Sato K, Hong YL, Yang MS, Shibuya T, Kawamoto H, Kitagawa H: Pharmacologic studies of central actions of zopiclone: influence on brain monoamines in rats under stressful condition. Int J Clin Pharmacol Ther Toxicol. 1985 Apr;23(4):204-10. Pubmed
Dundar Y, Dodd S, Strobl J, Boland A, Dickson R, Walley T: Comparative efficacy of newer hypnotic drugs for the short-term management of insomnia: a systematic review and meta-analysis. Hum Psychopharmacol. 2004 Jul;19(5):305-22. Pubmed
Blanchard JC, Julou L: Suriclone: a new cyclopyrrolone derivative recognizing receptors labeled by benzodiazepines in rat hippocampus and cerebellum. J Neurochem. 1983 Mar;40(3):601-7. Pubmed
Julou L, Bardone MC, Blanchard JC, Garret C, Stutzmann JM: Pharmacological studies on zopiclone. Pharmacology. 1983;27 Suppl 2:46-58. Pubmed

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Zopiclone

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