molecular formula C20H23N B1667244 アミトリプチリン CAS No. 50-48-6

アミトリプチリン

カタログ番号: B1667244
CAS番号: 50-48-6
分子量: 277.4 g/mol
InChIキー: KRMDCWKBEZIMAB-UHFFFAOYSA-N
注意: 研究専用です。人間または獣医用ではありません。
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説明

作用機序

アミトリプチリンの正確な作用機序は完全に解明されていません。 ノルエピネフリンやセロトニンなどの神経伝達物質の再取り込みを阻害することで、脳内のシナプス間隙におけるこれらの神経伝達物質の濃度を上昇させるものと考えられています . アミトリプチリンは、強力な抗コリン作用も持っており、アルファアドレナリン作動性、ムスカリン作動性、ヒスタミン作動性、ニコチン作動性、NMDA受容体などのさまざまな末梢受容体を遮断することができます .

6. 類似の化合物との比較

アミトリプチリンは、次のような他の三環系抗うつ薬と比較されることがよくあります。

アミトリプチリンは、複数の神経伝達物質系や受容体に影響を与える幅広いスペクトルの作用により、さまざまな状態の治療に有効であることが特徴です .

科学的研究の応用

Amitriptyline has a wide range of scientific research applications:

生化学分析

Biochemical Properties

Amitriptyline works by increasing the synaptic concentration of serotonin and/or norepinephrine in the central nervous system by inhibiting their reuptake by the presynaptic neuronal membrane pump . This action prolongs the sympathetic activity of these biogenic amines .

Cellular Effects

Amitriptyline has been shown to interfere with the formation of aggresome-like aggregates and autophagy-mediated clearance of aggregates . It also has immunomodulatory effects, such as lowering the production of typical T H 2-cytokines in T lymphocytes of asthmatic mice .

Molecular Mechanism

Amitriptyline’s key mechanism of action lies in the elevation of extracellular biogenic amine levels, notably those of noradrenaline and serotonin, by its blockade of cellular noradrenaline and serotonin reuptake transporters . This response may underlie chronic amitriptyline action on dopamine and norepinephrine neurotransmission .

Temporal Effects in Laboratory Settings

You may have flu-like symptoms like feeling sick, muscle pain, and feeling tired or restless . To help prevent this from happening, your doctor will probably recommend reducing your dose gradually over several weeks .

Dosage Effects in Animal Models

In animal models, oral administration of amitriptyline provides a valid model for behavioral assessment of antidepressant-like effects . The effectiveness of oral amitriptyline varies depending on sex, duration of treatment, and the depression model used .

Metabolic Pathways

Amitriptyline is readily absorbed in the GI tract and subject to extensive hepatic metabolism with less than 5% of the drug eliminated unchanged . The main metabolizing enzymes with clinical significance for amitriptyline are CYP2C19 and CYP2D6 .

Transport and Distribution

Amitriptyline is transported and distributed within cells and tissues via absorption in the GI tract . It is subject to extensive hepatic metabolism .

Subcellular Localization

Given its mechanism of action, it is likely that Amitriptyline localizes to the synapses in neurons where it can inhibit the reuptake of serotonin and norepinephrine .

準備方法

Synthetic Routes and Reaction Conditions: Amitriptyline can be synthesized through several methods. One common method involves the reaction of dibenzosuberone with dimethylamine in the presence of a reducing agent such as lithium aluminum hydride. The reaction proceeds through the formation of an intermediate, which is then cyclized to form amitriptyline .

Industrial Production Methods: In industrial settings, amitriptyline is typically produced through a multi-step synthesis process that ensures high yield and purity. The process involves the use of advanced techniques such as high-performance liquid chromatography (HPLC) for purification and quality control .

化学反応の分析

反応の種類: アミトリプチリンは、以下を含むさまざまな化学反応を起こします。

一般的な試薬と条件:

生成される主な生成物:

4. 科学研究への応用

アミトリプチリンは、幅広い科学研究への応用があります。

類似化合物との比較

Amitriptyline is often compared with other tricyclic antidepressants such as:

Amitriptyline is unique due to its broad spectrum of action, affecting multiple neurotransmitter systems and receptors, which contributes to its efficacy in treating a variety of conditions .

特性

IUPAC Name

N,N-dimethyl-3-(2-tricyclo[9.4.0.03,8]pentadeca-1(15),3,5,7,11,13-hexaenylidene)propan-1-amine
Source PubChem
URL https://pubchem.ncbi.nlm.nih.gov
Description Data deposited in or computed by PubChem

InChI

InChI=1S/C20H23N/c1-21(2)15-7-12-20-18-10-5-3-8-16(18)13-14-17-9-4-6-11-19(17)20/h3-6,8-12H,7,13-15H2,1-2H3
Source PubChem
URL https://pubchem.ncbi.nlm.nih.gov
Description Data deposited in or computed by PubChem

InChI Key

KRMDCWKBEZIMAB-UHFFFAOYSA-N
Source PubChem
URL https://pubchem.ncbi.nlm.nih.gov
Description Data deposited in or computed by PubChem

Canonical SMILES

CN(C)CCC=C1C2=CC=CC=C2CCC3=CC=CC=C31
Source PubChem
URL https://pubchem.ncbi.nlm.nih.gov
Description Data deposited in or computed by PubChem

Molecular Formula

C20H23N
Source PubChem
URL https://pubchem.ncbi.nlm.nih.gov
Description Data deposited in or computed by PubChem

Related CAS

17086-03-2 (pamoate (2:1)), 30227-34-0 (maleate (1:1)), 549-18-8 (hydrochloride)
Record name Amitriptyline [INN:BAN]
Source ChemIDplus
URL https://pubchem.ncbi.nlm.nih.gov/substance/?source=chemidplus&sourceid=0000050486
Description ChemIDplus is a free, web search system that provides access to the structure and nomenclature authority files used for the identification of chemical substances cited in National Library of Medicine (NLM) databases, including the TOXNET system.

DSSTOX Substance ID

DTXSID7022594
Record name Amitriptyline
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Description DSSTox provides a high quality public chemistry resource for supporting improved predictive toxicology.

Molecular Weight

277.4 g/mol
Source PubChem
URL https://pubchem.ncbi.nlm.nih.gov
Description Data deposited in or computed by PubChem

Physical Description

Solid
Record name Amitriptyline
Source Human Metabolome Database (HMDB)
URL http://www.hmdb.ca/metabolites/HMDB0014466
Description The Human Metabolome Database (HMDB) is a freely available electronic database containing detailed information about small molecule metabolites found in the human body.
Explanation HMDB is offered to the public as a freely available resource. Use and re-distribution of the data, in whole or in part, for commercial purposes requires explicit permission of the authors and explicit acknowledgment of the source material (HMDB) and the original publication (see the HMDB citing page). We ask that users who download significant portions of the database cite the HMDB paper in any resulting publications.

Boiling Point

410.26°C (rough estimate)
Record name Amitriptyline
Source DrugBank
URL https://www.drugbank.ca/drugs/DB00321
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Solubility

freely soluble in water, In water, 9.71 mg/L at 24 °C, 4.50e-03 g/L
Record name Amitriptyline
Source DrugBank
URL https://www.drugbank.ca/drugs/DB00321
Description The DrugBank database is a unique bioinformatics and cheminformatics resource that combines detailed drug (i.e. chemical, pharmacological and pharmaceutical) data with comprehensive drug target (i.e. sequence, structure, and pathway) information.
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Record name AMITRIPTYLINE
Source Hazardous Substances Data Bank (HSDB)
URL https://pubchem.ncbi.nlm.nih.gov/source/hsdb/3007
Description The Hazardous Substances Data Bank (HSDB) is a toxicology database that focuses on the toxicology of potentially hazardous chemicals. It provides information on human exposure, industrial hygiene, emergency handling procedures, environmental fate, regulatory requirements, nanomaterials, and related areas. The information in HSDB has been assessed by a Scientific Review Panel.
Record name Amitriptyline
Source Human Metabolome Database (HMDB)
URL http://www.hmdb.ca/metabolites/HMDB0014466
Description The Human Metabolome Database (HMDB) is a freely available electronic database containing detailed information about small molecule metabolites found in the human body.
Explanation HMDB is offered to the public as a freely available resource. Use and re-distribution of the data, in whole or in part, for commercial purposes requires explicit permission of the authors and explicit acknowledgment of the source material (HMDB) and the original publication (see the HMDB citing page). We ask that users who download significant portions of the database cite the HMDB paper in any resulting publications.

Mechanism of Action

The mechanism of action of this drug is not fully elucidated. It is suggested that amitriptyline inhibits the membrane pump mechanism responsible for the re-uptake of transmitter amines, such as norepinephrine and serotonin, thereby increasing their concentration at the synaptic clefts of the brain,. These amines are important in regulating mood. The monoamine hypothesis in depression, one of the oldest hypotheses, postulates that deficiencies of serotonin (5-HT) and/or norepinephrine (NE) neurotransmission in the brain lead to depressive effects. This drug counteracts these mechanisms, and this may be the mechanism of amitriptyline in improving depressive symptoms. Whether its analgesic effects are related to its mood-altering activities or attributable to a different, less obvious pharmacological action (or a combination of both) is unknown., Acute and chronic effects of the antidepressant drugs tranylcypromine, a monoamine oxidase inhibitor, and amitriptyline, a monoamine uptake inhibitor, were studied on beta-adrenergic receptor function in mouse astrocytes in primary cultures. In clinically relevant concentrations, acute administration of either antidepressant drug had a direct inhibitory effect on the binding of the beta-adrenergic ligand dihydroalprenolol and on the isoproterenol-induced accumulation of cyclic AMP. However, in the absence of isoproterenol, these drugs enhanced the formation of cyclic AMP in the astrocytes. Chronic exposure to amitriptyline or tranylcypromine led to a decrease in isoproterenol-induced accumulation of cyclic AMP, and the time course for the development of this phenomenon was similar to that reported for whole brain in vivo. These findings suggest that these antidepressant drugs act as a partial agonists at beta-adrenergic receptors on astrocytes, and that the down-regulation of beta-adrenergic activity that occurs in vivo after chronic administration of antidepressant drugs may, to a large extent, take place in astrocytes and may result from the partial beta-agonist nature of the drugs., Astrocytes play important roles in guiding the construction of the nervous system, controlling extracellular ions and neurotransmitters, and regulating CNS synaptogenesis. Egr-1 is a transcription factor involved in neuronal differentiation and astrocyte cell proliferation. In this study, we investigated whether the tricyclic antidepressant (TCA) amitriptyline induces Egr-1 expression in astrocytes using rat C6 glioma cells as a model. We found that amitriptyline increased the expression of Egr-1 in a dose- and time-dependent manner. The amitriptyline-induced Egr-1 expression was mediated through serum response elements (SREs) in the Egr-1 promoter. SREs were activated by the Ets-domain transcription factor Elk-1 through the ERK and JNK mitogen-activated protein (MAP) kinase pathways. The inhibition of the ERK and JNK MAP kinase signals attenuated amitriptyline-induced transactivation of Gal4-Elk-1 and Egr-1 promoter activity. Our findings suggest that the induction of Egr-1 expression in astrocytes may be required to attain the therapeutic effects of antidepressant drugs., Antidepressants such as serotonin-noradrenaline reuptake inhibitors (SNRIs) and tricyclic antidepressants (TCAs) are frequently used for the management of neuropathic pain. Noradrenaline (NA) and serotonin (5-HT) increase in the spinal cord by reuptake inhibition is considered to be main mechanism of the therapeutic effect of antidepressants in neuropathic pain. In the present study, we examined the analgesic effects of duloxetine (SNRI) and amitriptyline (TCA) in a rat model of neuropathic pain induced by spinal nerve ligation (SNL). Intraperitoneal administration of duloxetine and amitriptyline dose-dependently (3,10 and 30 mg/kg) suppressed hyperalgesia induced by SNL. In vivo microdialysis in the lumbar spinal dorsal horn revealed that NA and 5-HT concentrations increased after intraperitoneal administration of duloxetine and amitriptyline (10 mg/kg, respectively). We further determined NA and 5-HT contents in homogenized samples from the ipsilateral dorsal spinal cord after SNL. Although the NA content in SNL rats 2 weeks after ligation was higher than that in SNL rats 4 weeks after ligation, the analgesic efficacy of duloxetine and amitriptyline was similar between two groups. The present study suggests that NA/5-HT increase in the spinal cord is crucial in the antihyperalgesic effect of duloxetine and amitriptyline. The plastic change of the descending noradrenergic system does not obviously affect the analgesic efficacy of duloxetine and amitriptyline., Recent studies show that neuronal and glial plasticity are important for the therapeutic action of antidepressants. Here, we demonstrated that amitriptyline, a tricyclic antidepressant, significantly increased GDNF mRNA and GDNF release in C6 cells. Furthermore, different classes of antidepressants increased GDNF release, but non-antidepressant psychotropic drugs did not. The amitriptyline-induced GDNF release was completely inhibited by U0126, a mitogen-activated protein kinase (MAPK)-extracellular signal-regulated kinase (ERK) kinase (MEK) inhibitor, but was not inhibited by H-89, a protein kinase A inhibitor or calphostin C, a protein kinase C inhibitor. These results suggest that the amitriptyline-induced GDNF release may be regulated through a MEK/MAPK pathway. Next, we examined the effects of monoamines on GDNF release, because antidepressants are known to increase monoamines. 5-HT increased GDNF mRNA and GDNF release, but noradrenaline and dopamine did not. The 5-HT-induced GDNF release was partially, but significantly, blocked by ketanserin, a 5-HT2A receptor antagonist. The 5-HT-induced GDNF release was completely inhibited by U0126, but was not inhibited by H-89 or calphostin C. These results suggest that the 5-HT-induced GDNF release was mediated through a MEK/MAPK pathway and, at least, 5-HT2A receptors. GDNF, as well as other neurotrophic factors, may contribute to explain the therapeutic action of antidepressants and suggest a novel strategy of pharmacological intervention., For more Mechanism of Action (Complete) data for AMITRIPTYLINE (13 total), please visit the HSDB record page.
Record name Amitriptyline
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URL https://www.drugbank.ca/drugs/DB00321
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Record name AMITRIPTYLINE
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Color/Form

Crystals

CAS No.

50-48-6
Record name Amitriptyline
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Record name Amitriptyline [INN:BAN]
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Record name AMITRIPTYLINE
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Record name AMITRIPTYLINE
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Melting Point

196-197, 196 - 197 °C
Record name Amitriptyline
Source DrugBank
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Record name Amitriptyline
Source Human Metabolome Database (HMDB)
URL http://www.hmdb.ca/metabolites/HMDB0014466
Description The Human Metabolome Database (HMDB) is a freely available electronic database containing detailed information about small molecule metabolites found in the human body.
Explanation HMDB is offered to the public as a freely available resource. Use and re-distribution of the data, in whole or in part, for commercial purposes requires explicit permission of the authors and explicit acknowledgment of the source material (HMDB) and the original publication (see the HMDB citing page). We ask that users who download significant portions of the database cite the HMDB paper in any resulting publications.

Synthesis routes and methods I

Procedure details

6-Carboxyfluorescein (1.00 g, 2.66 mmol) was dissolved in 8 mL DMF, 306 mg (2.66 mmol) of N-hydroxysuccinimide (HOSu) was added, 549 mg (2.66 mmol) of 1,3-dicyclohexylcarbodiimide (DCC) was added, and the reaction stirred for 17 hours, under N2, in the dark. The reaction was then vacuum filtered, filtrate combined with 784 mg (2.65 mmol) of 2-aminoimipramine (26c), 0.56 mL (4.0 mmol) of triethylamine, and 4.0 mL DMF, and reaction allowed to stir 4 days under N2, in the dark. Reaction solvents were removed in vacuo and residue purified on reverse phase C18 preparative (1 mm) TLC plates, eluting with H2O/THF/HOAc (40/60/0.4) followed by preparative HPLC on a Waters mbondapak C18 column (19 mm×150 mm), eluting with H2O/THF/HOAc (35/65/0.4) at a flow rate of 7.0 mL/minute to yield 410 mg (24%) of the desired tracer (27) as an orange powder; mass spec (FAB) (M+H)+ 654.
Quantity
1 g
Type
reactant
Reaction Step One
Name
Quantity
8 mL
Type
solvent
Reaction Step One
Quantity
306 mg
Type
reactant
Reaction Step Two
Quantity
549 mg
Type
reactant
Reaction Step Three
[Compound]
Name
( 26c )
Quantity
0 (± 1) mol
Type
reactant
Reaction Step Four
Quantity
0.56 mL
Type
reactant
Reaction Step Four
Name
Quantity
4 mL
Type
solvent
Reaction Step Four

Synthesis routes and methods II

Procedure details

0.750 gm amitriptyline hydrochloride USP, is wetted with 1.5 ml of ethoxy diglycol reagent, and stirred into 75 gm of the base cream prepared as per example 3 and triple milled. A cream-type preparation results which contains amitriptyline hydrochloride @ 10 mg/ml
Quantity
0.75 g
Type
reactant
Reaction Step One
Quantity
1.5 mL
Type
reactant
Reaction Step Two
[Compound]
Name
base
Quantity
75 g
Type
reactant
Reaction Step Three
Quantity
0 (± 1) mol
Type
reactant
Reaction Step Four

Synthesis routes and methods III

Procedure details

1-Chloro-amitriptyline (196 mg) in 3 ml. absolute ethanol was added to an ethanolic solution of 1.1 eq. d-tartaric acid and warmed for 5-10 mins. The title compound was precipitated with ethyl ether as a white powder. After purity and identification checks, the overall yield from amitriptyline base was 32%.
Quantity
196 mg
Type
reactant
Reaction Step One
Quantity
0 (± 1) mol
Type
reactant
Reaction Step Two
Quantity
0 (± 1) mol
Type
solvent
Reaction Step Two

Retrosynthesis Analysis

AI-Powered Synthesis Planning: Our tool employs the Template_relevance Pistachio, Template_relevance Bkms_metabolic, Template_relevance Pistachio_ringbreaker, Template_relevance Reaxys, Template_relevance Reaxys_biocatalysis model, leveraging a vast database of chemical reactions to predict feasible synthetic routes.

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Strategy Settings

Precursor scoring Relevance Heuristic
Min. plausibility 0.01
Model Template_relevance
Template Set Pistachio/Bkms_metabolic/Pistachio_ringbreaker/Reaxys/Reaxys_biocatalysis
Top-N result to add to graph 6

Feasible Synthetic Routes

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