Metaclazepam

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Metaclazepam
Metaclazepam.svg
Clinical data
Trade names Talis
ATC code
  • none
Identifiers
  • 7-bromo-5-(2-chlorophenyl)-2-(methoxymethyl)-1-methyl-2,3-dihydro-1,4-benzodiazepine
CAS Number
PubChem CID
ChemSpider
UNII
ChEMBL
CompTox Dashboard (EPA)
Chemical and physical data
Formula C18H18BrClN2O
Molar mass 393.71 g·mol−1
3D model (JSmol)
  • ClC1=CC=CC=C1C2=NCC(COC)N(C)C3=C2C=C(Br)C=C3
  • InChI=1S/C18H18BrClN2O/c1-22-13(11-23-2)10-21-18(14-5-3-4-6-16(14)20)15-9-12(19)7-8-17(15)22/h3-9,13H,10-11H2,1-2H3 Yes check.svgY
  • Key:WABYCCJHARSRBH-UHFFFAOYSA-N Yes check.svgY
   (verify)

Metaclazepam [1] (marketed under the brand name Talis) is a drug which is a benzodiazepine derivative. [2] [3] It is a relatively selective anxiolytic with less sedative or muscle relaxant properties than other benzodiazepines such as diazepam or bromazepam. [4] It has an active metabolite N-desmethylmetaclazepam, which is the main metabolite of metaclazepam. [5] There is no significant difference in metabolism between younger and older individuals. [6]

Metaclazepam is slightly more effective as an anxiolytic than bromazepam, [7] or diazepam, [8] with a 15 mg dose of metaclazepam equivalent to 4 mg of bromazepam. [9] Metaclazepam can interact with alcohol producing additive sedative-hypnotic effects. [6] [10] Fatigue is a common side effect from metaclazepam at high doses. [11] Small amounts of metaclazepam as well as its metabolites enter into human breast milk. [12]

See also

Related Research Articles

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Bromazepam, sold under many brand names, is a benzodiazepine. It is mainly an anti-anxiety agent with similar side effects to diazepam. In addition to being used to treat anxiety or panic states, bromazepam may be used as a premedicant prior to minor surgery. Bromazepam typically comes in doses of 3 mg and 6 mg tablets.

<span class="mw-page-title-main">Oxazepam</span> Benzodiazepine medication

Oxazepam is a short-to-intermediate-acting benzodiazepine. Oxazepam is used for the treatment of anxiety and insomnia and in the control of symptoms of alcohol withdrawal syndrome.

<span class="mw-page-title-main">Clobazam</span> Benzodiazepine class medication

Clobazam, sold under the brand names Frisium, Onfi and others, is a benzodiazepine class medication that was patented in 1968. Clobazam was first synthesized in 1966 and first published in 1969. Clobazam was originally marketed as an anxioselective anxiolytic since 1970, and an anticonvulsant since 1984. The primary drug-development goal was to provide greater anxiolytic, anti-obsessive efficacy with fewer benzodiazepine-related side effects.

<span class="mw-page-title-main">Quazepam</span> Benzodiazipine

Quazepam, sold under brand name Doral among others, is a relatively long-acting benzodiazepine derivative drug developed by the Schering Corporation in the 1970s. Quazepam is used for the treatment of insomnia including sleep induction and sleep maintenance. Quazepam induces impairment of motor function and has relatively selective hypnotic and anticonvulsant properties with considerably less overdose potential than other benzodiazepines. Quazepam is an effective hypnotic which induces and maintains sleep without disruption of the sleep architecture.

<span class="mw-page-title-main">Nordazepam</span> Benzodiazepine derivative medication

Nordazepam is a 1,4-benzodiazepine derivative. Like other benzodiazepine derivatives, it has amnesic, anticonvulsant, anxiolytic, muscle relaxant, and sedative properties. However, it is used primarily in the treatment of anxiety disorders. It is an active metabolite of diazepam, chlordiazepoxide, clorazepate, prazepam, pinazepam, and medazepam.

<span class="mw-page-title-main">Clorazepate</span> Benzodiazepine medication

Clorazepate, sold under the brand name Tranxene among others, is a benzodiazepine medication. It possesses anxiolytic, anticonvulsant, sedative, hypnotic, and skeletal muscle relaxant properties. Clorazepate is an unusually long-lasting benzodiazepine and serves as a prodrug for the equally long-lasting desmethyldiazepam, which is rapidly produced as an active metabolite. Desmethyldiazepam is responsible for most of the therapeutic effects of clorazepate.

<span class="mw-page-title-main">Alpidem</span> Anxiolytic medication

Alpidem, sold under the brand name Ananxyl, is a nonbenzodiazepine anxiolytic medication which was briefly used to treat anxiety disorders but is no longer marketed. It was previously marketed in France, but was discontinued due to liver toxicity. Alpidem is taken by mouth.

<span class="mw-page-title-main">Prazepam</span> Benzodiazepine drug

Prazepam is a benzodiazepine derivative drug developed by Warner-Lambert in the 1960s. It possesses anxiolytic, anticonvulsant, sedative and skeletal muscle relaxant properties. Prazepam is a prodrug for desmethyldiazepam which is responsible for the therapeutic effects of prazepam.

<span class="mw-page-title-main">Pinazepam</span> Benzodiazepine drug

Pinazepam is a benzodiazepine drug. It possesses anxiolytic, anticonvulsant, sedative and skeletal muscle relaxant properties.

<span class="mw-page-title-main">Camazepam</span> Chemical compound

Camazepam is a benzodiazepine psychoactive drug, marketed under the brand names Albego, Limpidon and Paxor. It is the dimethyl carbamate ester of temazepam, a metabolite of diazepam. While it possesses anxiolytic, anticonvulsant, skeletal muscle relaxant and hypnotic properties it differs from other benzodiazepines in that its anxiolytic properties are particularly prominent but has comparatively limited anticonvulsant, hypnotic and skeletal muscle relaxant properties.

<span class="mw-page-title-main">Ethyl loflazepate</span> Chemical compound

Ethyl loflazepate is a drug which is a benzodiazepine derivative. It possesses anxiolytic, anticonvulsant, sedative and skeletal muscle relaxant properties. In animal studies it was found to have low toxicity, although in rats evidence of pulmonary phospholipidosis occurred with pulmonary foam cells developing with long-term use of very high doses. Its elimination half-life is 51–103 hours. Its mechanism of action is similar to other benzodiazepines. Ethyl loflazepate also produces an active metabolite which is stronger than the parent compound. Ethyl loflazepate was designed to be a prodrug for descarboxyloflazepate, its active metabolite. It is the active metabolite which is responsible for most of the pharmacological effects rather than ethyl loflazepate. The main metabolites of ethyl loflazepate are descarbethoxyloflazepate, loflazepate and 3-hydroxydescarbethoxyloflazepate. Accumulation of the active metabolites of ethyl loflazepate are not affected by those with kidney failure or impairment. The symptoms of an overdose of ethyl loflazepate include sleepiness, agitation and ataxia. Hypotonia may also occur in severe cases. These symptoms occur much more frequently and severely in children. Death from therapeutic maintenance doses of ethyl loflazepate taken for 2 – 3 weeks has been reported in 3 elderly patients. The cause of death was asphyxia due to benzodiazepine toxicity. High doses of the antidepressant fluvoxamine may potentiate the adverse effects of ethyl loflazepate.

<span class="mw-page-title-main">Clotiazepam</span> Chemical compound

Clotiazepam is a thienodiazepine drug which is a benzodiazepine analog. The clotiazepam molecule differs from benzodiazepines in that the benzene ring has been replaced by a thiophene ring. It possesses anxiolytic, skeletal muscle relaxant, anticonvulsant, sedative properties. Stage 2 NREM sleep is significantly increased by clotiazepam.

<span class="mw-page-title-main">Tetrazepam</span> Chemical compound

Tetrazepam is a benzodiazepine derivative with anticonvulsant, anxiolytic, muscle relaxant and slightly hypnotic properties. It was formerly used mainly in Austria, France, Belgium, Germany and Spain to treat muscle spasm, anxiety disorders such as panic attacks, or more rarely to treat depression, premenstrual syndrome or agoraphobia. Tetrazepam has relatively little sedative effect at low doses while still producing useful muscle relaxation and anxiety relief. The Co-ordination Group for Mutual Recognition and Decentralised Procedures-Human endorsed the Pharmacovigilance Risk Assessment Committee (PRAC) recommendation to suspend the marketing authorisations of tetrazepam-containing medicines across the European Union (EU) in April 2013. The European Commission has confirmed the suspension of the marketing authorisations for Tetrazepam in Europe because of cutaneous toxicity, effective from the 1 August 2013.

<span class="mw-page-title-main">Delorazepam</span> Benzodiazepine medication

Delorazepam, also known as chlordesmethyldiazepam and nordiclazepam, is a drug which is a benzodiazepine and a derivative of desmethyldiazepam. It is marketed in Italy, where it is available under the trade name EN and Dadumir. Delorazepam (chlordesmethyldiazepam) is also an active metabolite of the benzodiazepine drugs diclazepam and cloxazolam. Adverse effects may include hangover type effects, drowsiness, behavioural impairments and short-term memory impairments. Similar to other benzodiazepines delorazepam has anxiolytic, skeletal muscle relaxant, hypnotic and anticonvulsant properties.

<span class="mw-page-title-main">Benzoctamine</span> Chemical compound

Benzoctamine is a drug that possesses sedative and anxiolytic properties. Marketed as Tacitin by Ciba-Geigy, it is different from most sedative drugs because in most clinical trials it does not produce respiratory depression, but actually stimulates the respiratory system. As a result, when compared to other sedative and anxiolytic drugs such as benzodiazepines like diazepam, it is a safer form of tranquilizing. However, when co-administered with other drugs that cause respiratory depression, like morphine, it can cause increased respiratory depression.

<span class="mw-page-title-main">Fosazepam</span> Benzodiazepam

Fosazepam is a drug which is a benzodiazepine derivative; it is a water soluble derivative of diazepam. It has sedative and anxiolytic effects, and is a derivative of diazepam which has been substituted with a dimethylphosphoryl group to improve solubility in water.

<span class="mw-page-title-main">Abecarnil</span> Chemical compound

Abecarnil (ZK-112,119) is an anxiolytic drug from the β-Carboline family. It is one of a relatively recently developed class of medicines known as the nonbenzodiazepines, which have similar effects to the older benzodiazepine group, but with quite different chemical structures. It is a partial agonist acting selectively at the benzodiazepine site of the GABAA receptor.

<span class="mw-page-title-main">Flutoprazepam</span> Benzodiazepam

Flutoprazepam (Restas) is a drug which is a benzodiazepine. It was patented in Japan by Sumitomo in 1972 and its medical use remains mostly confined to that country. Its muscle relaxant properties are approximately equivalent to those of diazepam - however, it has more powerful sedative, hypnotic, anxiolytic and anticonvulsant effects and is around four times more potent by weight compared to diazepam. It is longer acting than diazepam due to its long-acting active metabolites, which contribute significantly to its effects. Its principal active metabolite is n-desalkylflurazepam, also known as norflurazepam, which is also a principal metabolite of flurazepam.

<span class="mw-page-title-main">Premazepam</span> Chemical compound

Premazepam is a Pyrrolodiazepine class of drug. It is a partial agonist of benzodiazepine receptors and was shown in 1984 to possess both anxiolytic and sedative properties in humans but was never marketed.

<span class="mw-page-title-main">Deramciclane</span> Drug used to treat anxiety disorders

Deramciclane (EGIS-3886) is a non-benzodiazepine-type anxiolytic drug to treat various types of anxiety disorders. Deramciclane is a unique alternative to current anxiolytics on the market because it has a novel chemical structure and target. It acts as an antagonist at the 5-HT2A receptor, as an inverse agonist at the 5-HT2C receptor, and as a GABA reuptake inhibitor. The two serotonin receptors are G protein-coupled receptors and are two of the main excitatory serotonin receptor types. Their excitation has been implicated in anxiety and mood. Deramciclane does not affect CYP3A4 activity in metabolizing other drugs, but it is a weak inhibitor of CYP2D6. Some studies also show the drug to have moderate affinity to dopamine D2 receptors and low affinity to dopamine receptor D1. Researchers are looking for alternatives to benzodiazepines for anxiolytic use because benzodiazepine drugs have sedative and muscle relaxant side effects.

References

  1. US 4098786
  2. Borchers F, Achtert G, Hausleiter HJ, Zeugner H (1984). "Metabolism and pharmacokinetics of metaclazepam (Talis), Part III: Determination of the chemical structure of metabolites in dogs, rabbits and men". European Journal of Drug Metabolism and Pharmacokinetics. 9 (4): 325–46. doi:10.1007/bf03189684. PMID   6532806. S2CID   12290664.
  3. Althaus W, Block J, Förster A, Kühnhold M, Meister D, Wischniewski M (September 1986). "Analytical profile of metaclazepam". Arzneimittel-Forschung. 36 (9): 1302–6. PMID   3790179.
  4. Buschmann G, Kühl UG, Rohte O (1985). "General pharmacology of the anxiolytic compound metaclazepam in comparison to other benzodiazepines". Arzneimittel-Forschung. 35 (11): 1643–55. PMID   2868732.
  5. Gielsdorf W, Molz KH, Hausleiter HJ, Achtert G, Philipp P (1986). "Pharmacokinetic profile of metaclazepam (Talis), a new 1.4-benzodiazepine. Influence of different dosage regimens on the pharmacokinetic profile of metaclazepam and its main metabolite under steady-state conditions". European Journal of Drug Metabolism and Pharmacokinetics. 11 (3): 205–10. doi:10.1007/bf03189848. PMID   3816876. S2CID   8493668.
  6. 1 2 Molz KH, Gielsdorf W, Rasper J, Jaeger H, Hausleiter HJ, Achtert G, Philipp P (1985). "Comparison of the pharmacokinetic profile of metaclazepam in old and young volunteers". European Journal of Clinical Pharmacology. 29 (2): 247–9. doi:10.1007/bf00547431. PMID   4076323. S2CID   8017809.
  7. Bilone F, Roncari R (1988). "A double-blind comparison of the anxiolytic activity of two benzodiazepines, metaclazepam and bromazepam, in anxiety neurosis". Current Medical Research and Opinion. 11 (1): 45–7. doi:10.1185/03007998809111130. PMID   2898321.
  8. Laakmann G, Blaschke D, Hippius H, Schewe S (May 1989). "Double-blind study of metaclazepam versus diazepam treatment of outpatients with anxiety syndrome". Pharmacopsychiatry. 22 (3): 120–5. doi:10.1055/s-2007-1014593. PMID   2568645.
  9. Marano P, Patti F, Nicoletti F (1988). "Controlled study on the anxiolytic activity of a newly-developed benzodiazepine, metaclazepam". Current Medical Research and Opinion. 11 (1): 41–4. doi:10.1185/03007998809111129. PMID   2898320.
  10. Schmidt V (1983). "[Experimental studies on the interaction of alcohol and metaclazepam]". Beiträge zur Gerichtlichen Medizin. 41: 413–7. PMID   6639614.
  11. Laakmann G, Blaschke D, Hippius H, Schewe S (May 1988). "Double-blind randomized trial of the benzodiazepine derivative metaclazepam as compared with placebo treatment of outpatients with anxiety syndromes". Pharmacopsychiatry. 21 (3): 136–43. doi:10.1055/s-2007-1014665. PMID   2900514.
  12. Schotter A, Müller R, Günther C, Hausleiter HJ, Achtert G (November 1989). "Transfer of metaclazepam and its metabolites into breast milk". Arzneimittel-Forschung. 39 (11): 1468–70. PMID   2575907.