Lemborexant - CAS 1369764-02-2
Catalog number: B0084-474520
Category: Inhibitor
Not Intended for Therapeutic Use. For research use only.
Molecular Formula:
Molecular Weight:
Orexin Receptor (OX Receptor)
Lemborexant, an orexin OX1/OX2 receptors antagonist, has been found to be effective against insomnia and is just planed a Phase III trail by Eisai.
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B0084-474520 50 mg $899 In stock
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Lemborexant; UNII-0K5743G68X; Lemborexant [INN]; SCHEMBL2116558; CHEMBL3545367; 0K5743G68X
DMSO: ≥ 30 mg/mL
-20ºC Freeze
Lemborexant is an orexin OX1/OX2 receptors antagonist that has been found to be effective against insomnia and is just planed a Phase III trail by Eisai.
Shelf Life:
As supplied, 2 years from the QC date provided on the Certificate of Analysis, when stored properly
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1.Disposition and metabolism of [
Ueno T;Ishida T;Kusano K Xenobiotica. 2018 Jul 5:1-10. doi: 10.1080/00498254.2018.1482509. [Epub ahead of print]
The disposition and metabolism of lemborexant, a novel dual orexin receptor antagonist currently under development as a therapeutic agent for insomnia disorder, were evaluated after a single oral administration of [;14;C]lemborexant in Sprague-Dawley rats (10 mg/kg) and cynomolgus monkeys (3 mg/kg). In both species, [;14;C]lemborexant was rapidly absorbed: radioactivity concentration in blood peaked at 0.83-1.8 h, and decreased with elimination half-life of 110 h. The radioactivity administered was excreted primarily into faeces, with relatively little excreted into urine. Lemborexant was not detected in bile, urine or faeces, indicating that lemborexant administered orally was completely absorbed from the gastrointestinal tract and that the main elimination pathway was metabolism in both species. In rats, lemborexant was found to be minor in plasma (≤5.2% of total radioactivity), and M9 (hydroxylated form) was the major circulating metabolite. In monkeys, the major circulating components were lemborexant, M4 (N-oxide metabolite), M13 (di-oxidised form), M14 (di-oxidised form) and M16 (glucuronide of mono-oxidised form). In both species, lemborexant was metabolised to various metabolites by multiple pathways, the primary of which was oxidation of the dimethylpyrimidine or fluorophenyl moiety.
2.Insomnia in Elderly Patients: Recommendations for Pharmacological Management.
Abad VC;Guilleminault C Drugs Aging. 2018 Sep;35(9):791-817. doi: 10.1007/s40266-018-0569-8.
Chronic insomnia affects 57% of the elderly in the United States, with impairment of quality of life, function, and health. Chronic insomnia burdens society with billions of dollars in direct and indirect costs of care. The main modalities in the treatment of insomnia in the elderly are psychological/behavioral therapies, pharmacological treatment, or a combination of both. Various specialty societies view psychological/behavioral therapies as the initial treatment intervention. Pharmacotherapy plays an adjunctive role when insomnia symptoms persist or when patients are unable to pursue cognitive behavioral therapies. Current drugs for insomnia fall into different classes: orexin agonists, histamine receptor antagonists, non-benzodiazepine gamma aminobutyric acid receptor agonists, and benzodiazepines. This review focuses on Food and Drug Administration (FDA)-approved drugs for insomnia, including suvorexant, low-dose doxepin, Z-drugs (eszopiclone, zolpidem, zaleplon), benzodiazepines (triazolam, temazepam), and ramelteon. We review the indications, dosing, efficacy, benefits, and harms of these drugs in the elderly, and discuss data on drugs that are commonly used off-label to treat insomnia, and those that are in clinical development.
3.In Vitro and In Silico Characterization of Lemborexant (E2006), a Novel Dual Orexin Receptor Antagonist.
Beuckmann CT;Suzuki M;Ueno T;Nagaoka K;Arai T;Higashiyama H J Pharmacol Exp Ther. 2017 Aug;362(2):287-295. doi: 10.1124/jpet.117.241422. Epub 2017 May 30.
Orexin (hypocretin) neuropeptides have, among others, been implicated in arousal/sleep control, and antagonizing the orexin signaling pathway has been previously demonstrated to promote sleep in animals and humans. This mechanism opens up a new therapeutic approach to curb excessive wakefulness in insomnia disorder rather than to promote sleep-related signaling. Here we describe the preclinical pharmacological in vitro and in silico characterization of lemborexant ((1;R;,2;S;)-2-{[(2,4-dimethylpyrimidin-5-yl)oxy]methyl}-2-(3-fluorophenyl)-;N;-(5-fluoropyridin-2-yl)cyclopropanecarboxamide)), a dual orexin receptor antagonist (DORA), as a novel experimental therapeutic agent for the symptomatic treatment of insomnia disorder and compare its properties to two other DORAs, almorexant and suvorexant. Lemborexant binds to both orexin receptors and functionally inhibits them in a competitive manner with low nanomolar potency, without any species difference apparent among human, rat, and mouse receptors. Binding and dissociation kinetics on both orexin receptors are rapid. Lemborexant is selective for both orexin receptors over 88 other receptors, transporters, and ion channels of important physiologic function.
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