molecular formula C26H37N5O2 B1668192 Cabergolin CAS No. 81409-90-7

Cabergolin

Katalognummer: B1668192
CAS-Nummer: 81409-90-7
Molekulargewicht: 451.6 g/mol
InChI-Schlüssel: KORNTPPJEAJQIU-KJXAQDMKSA-N
Achtung: Nur für Forschungszwecke. Nicht für den menschlichen oder tierärztlichen Gebrauch.
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Beschreibung

Cabergolin ist ein dopaminerges Medikament, das hauptsächlich zur Behandlung von Erkrankungen eingesetzt wird, die mit hohen Prolaktinspiegeln verbunden sind, wie z. B. Prolactinomen und Hyperprolaktinämie. Es wird auch bei der Behandlung der Parkinson-Krankheit und anderer Erkrankungen eingesetzt. This compound ist ein Ergotaminderivat und wirkt als potenter Agonist des Dopamin-D2-Rezeptors .

Wissenschaftliche Forschungsanwendungen

Cabergolin hat eine breite Palette an Anwendungen in der wissenschaftlichen Forschung:

Wirkmechanismus

This compound entfaltet seine Wirkung, indem es die Dopamin-D2-Rezeptoren stimuliert, die G-Protein-gekoppelte Rezeptoren sind, die mit Gi-Proteinen assoziiert sind. In Laktrotrophen hemmt die Stimulation von Dopamin-D2-Rezeptoren die Adenylylcyclase, wodurch die intrazelluläre Konzentration von cyclischem Adenosinmonophosphat (cAMP) verringert und die IP3-abhängige Freisetzung von Kalzium aus intrazellulären Speichern blockiert wird. Dies führt zur Hemmung der Prolaktinsekretion .

Wirkmechanismus

Target of Action

Cabergoline is a long-acting dopamine agonist and prolactin inhibitor . It primarily targets the dopamine D2 receptors , which are mainly found in the anterior pituitary and the nigrostriatal pathway . These receptors play a crucial role in the regulation of prolactin secretion and coordinated muscle activity .

Mode of Action

Cabergoline interacts with its targets by binding to the dopamine D2 receptors . This binding causes inhibition of adenylyl cyclase, which decreases intracellular cAMP concentrations and blocks IP3-dependent release of Ca2+ from intracellular stores . This interaction results in the suppression of prolactin secretion from lactotrophs of the anterior pituitary .

Biochemical Pathways

The primary biochemical pathway affected by cabergoline is the dopamine signaling pathway. By binding to the dopamine D2 receptors, cabergoline inhibits the activity of adenylyl cyclase, leading to a decrease in cAMP levels . This decrease in cAMP levels then inhibits the release of prolactin, thereby suppressing prolactin secretion .

Pharmacokinetics

Cabergoline exhibits linear pharmacokinetics over a dose range of 0.5–7mg in healthy adult volunteers and parkinsonian patients . It is moderately bound (around 40%) to human plasma proteins in a concentration-independent manner . The absolute bioavailability of cabergoline is unknown . It is extensively metabolized by the liver, predominantly via hydrolysis of the acylurea bond of the urea moiety . Less than 4% is excreted unchanged in the urine . The elimination half-life of cabergoline estimated from urinary data of healthy subjects ranges between 63 and 109 hours .

Result of Action

The molecular and cellular effects of cabergoline’s action primarily involve the suppression of prolactin secretion from lactotrophs of the anterior pituitary . Recent studies have also revealed that cabergoline suppresses tumor cell proliferation and induces cell death .

Biochemische Analyse

Biochemical Properties

Cabergoline interacts with dopamine D2 receptors, exhibiting potent agonist activity . It is extensively metabolized by the liver, predominantly via hydrolysis of the acylurea bond of the urea moiety . Cytochrome P450-mediated metabolism is minimal .

Cellular Effects

Cabergoline has been shown to influence various types of cells and cellular processes. It is used to reduce the production of a hormone called prolactin by the pituitary gland . In human endometrial stromal cells, Cabergoline treatment more than doubled decidual biomarker expression . It also induced characteristic decidual morphology changes and blocked detrimental effects of IL-1β on decidual cytology .

Molecular Mechanism

Cabergoline exerts its effects at the molecular level primarily through its action as a dopamine D2 receptor agonist . The stimulation of dopamine D2 receptors leads to improvements in coordinated muscle activity in those with movement disorders .

Temporal Effects in Laboratory Settings

Cabergoline is a long-acting medication, usually taken once or twice a week . The elimination half-life of cabergoline estimated from urinary data of healthy subjects ranges between 63 and 109 hours .

Dosage Effects in Animal Models

The effects of Cabergoline can vary with different dosages in animal models

Metabolic Pathways

Cabergoline is involved in metabolic pathways predominantly via hydrolysis of the acylurea bond of the urea moiety . The major metabolites identified thus far do not contribute to the therapeutic effect of Cabergoline .

Subcellular Localization

In terms of subcellular localization, one study found strong immunohistochemistry localization of dopamine D2 receptors (which Cabergoline interacts with) in the endometrial stromal compartment with a subcellular distribution distinct from that of ERα .

Vorbereitungsmethoden

Cabergolin wird aus Ergo-8β-Carbonsäureester durch eine Reihe chemischer Reaktionen synthetisiert. Der Prozess beinhaltet die Schutz der sekundären Amin- und der Indol-Stickstoff-Funktionen von Ergo-8β-Carbonsäure C1-4 Alkyl-Estern als Carbamat-Derivate. Die geschützte Verbindung wird dann mit 3-(Dimethylamino)propylamin amidiert, mit Ethylisocyanat umgesetzt, und die Schutzgruppen werden abgespalten. Schließlich wird das entschützte sekundäre Amin mit einem elektrophilen Allylalkohol-Derivat umgesetzt, um this compound zu erhalten .

Chemische Reaktionsanalyse

This compound unterliegt verschiedenen chemischen Reaktionen, darunter Hydrolyse und Oxidation. Es ist sehr empfindlich gegenüber Hydrolyse, insbesondere an der Harnstoffgruppe und der Amidgruppe. Die Alkenbindung in this compound ist anfällig für Oxidation. Übliche Reagenzien, die bei diesen Reaktionen verwendet werden, sind Wasser für die Hydrolyse und Oxidationsmittel für die Oxidation. Die Hauptprodukte, die aus diesen Reaktionen gebildet werden, sind Abbauprodukte, die mittels Infrarot- und Massenspektroskopie analysiert wurden.

Analyse Chemischer Reaktionen

Cabergoline undergoes various chemical reactions, including hydrolysis and oxidation. It is highly sensitive to hydrolysis, particularly at the urea moiety and amide group. The alkene bond in cabergoline is susceptible to oxidation. Common reagents used in these reactions include water for hydrolysis and oxidizing agents for oxidation. The major products formed from these reactions are degradation products identified using infrared and mass spectrometry analyses.

Vergleich Mit ähnlichen Verbindungen

Cabergolin wird oft mit anderen Dopaminagonisten wie Bromocriptin und Pergolid verglichen. Während alle drei Verbindungen zur Behandlung von Hyperprolaktinämie und Parkinson-Krankheit eingesetzt werden, hat this compound eine längere Halbwertszeit und eine höhere Affinität zu Dopamin-D2-Rezeptoren, wodurch es wirksamer und von Patienten besser vertragen wird . Bromocriptin und Pergolid haben kürzere Halbwertszeiten und können eine häufigere Dosierung erfordern .

Ähnliche Verbindungen

  • Bromocriptin
  • Pergolid
  • Quinagolid

Die einzigartigen Eigenschaften von this compound, wie z. B. seine lange Halbwertszeit und seine hohe Rezeptoraffinität, machen es für viele Patienten und Gesundheitsdienstleister zur bevorzugten Wahl.

Eigenschaften

IUPAC Name

(6aR,9R,10aR)-N-[3-(dimethylamino)propyl]-N-(ethylcarbamoyl)-7-prop-2-enyl-6,6a,8,9,10,10a-hexahydro-4H-indolo[4,3-fg]quinoline-9-carboxamide
Source PubChem
URL https://pubchem.ncbi.nlm.nih.gov
Description Data deposited in or computed by PubChem

InChI

InChI=1S/C26H37N5O2/c1-5-11-30-17-19(25(32)31(26(33)27-6-2)13-8-12-29(3)4)14-21-20-9-7-10-22-24(20)18(16-28-22)15-23(21)30/h5,7,9-10,16,19,21,23,28H,1,6,8,11-15,17H2,2-4H3,(H,27,33)/t19-,21-,23-/m1/s1
Source PubChem
URL https://pubchem.ncbi.nlm.nih.gov
Description Data deposited in or computed by PubChem

InChI Key

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

Canonical SMILES

CCNC(=O)N(CCCN(C)C)C(=O)C1CC2C(CC3=CNC4=CC=CC2=C34)N(C1)CC=C
Source PubChem
URL https://pubchem.ncbi.nlm.nih.gov
Description Data deposited in or computed by PubChem

Isomeric SMILES

CCNC(=O)N(CCCN(C)C)C(=O)[C@@H]1C[C@H]2[C@@H](CC3=CNC4=CC=CC2=C34)N(C1)CC=C
Source PubChem
URL https://pubchem.ncbi.nlm.nih.gov
Description Data deposited in or computed by PubChem

Molecular Formula

C26H37N5O2
Source PubChem
URL https://pubchem.ncbi.nlm.nih.gov
Description Data deposited in or computed by PubChem

Related CAS

85329-89-1 (diphosphate)
Record name Cabergoline [USAN:USP:INN:BAN]
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DSSTOX Substance ID

DTXSID6022719
Record name Cabergoline
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Molecular Weight

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

Physical Description

Solid
Record name Cabergoline
Source Human Metabolome Database (HMDB)
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Solubility

Insoluble, 6.40e-02 g/L
Record name Cabergoline
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Mechanism of Action

The dopamine D2 receptor is a 7-transmembrane G-protein coupled receptor associated with Gi proteins. In lactotrophs, stimulation of dopamine D2 causes inhibition of adenylyl cyclase, which decreases intracellular cAMP concentrations and blocks IP3-dependent release of Ca2+ from intracellular stores. Decreases in intracellular calcium levels may also be brought about via inhibition of calcium influx through voltage-gated calcium channels, rather than via inhibition of adenylyl cyclase. Additionally, receptor activation blocks phosphorylation of p42/p44 MAPK and decreases MAPK/ERK kinase phosphorylation. Inhibition of MAPK appears to be mediated by c-Raf and B-Raf-dependent inhibition of MAPK/ERK kinase. Dopamine-stimulated growth hormone release from the pituitary gland is mediated by a decrease in intracellular calcium influx through voltage-gated calcium channels rather than via adenylyl cyclase inhibition. Stimulation of dopamine D2 receptors in the nigrostriatal pathway leads to improvements in coordinated muscle activity in those with movement disorders. Cabergoline is a long-acting dopamine receptor agonist with a high affinity for D2 receptors. Receptor-binding studies indicate that cabergoline has low affinity for dopamine D1, α1,- and α2- adrenergic, and 5-HT1- and 5-HT2-serotonin receptors.
Record name Cabergoline
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CAS No.

81409-90-7
Record name Cabergoline
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Record name Cabergoline [USAN:USP:INN:BAN]
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Record name Cabergoline
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Record name (6aR,9R,10aR)-N-[3-(dimethylamino)propyl]-N-(ethylcarbamoyl)-7-prop-2-enyl-6,6a,8,9,10,10a-hexahydro-4H-indolo[4,3-fg]quinoline-9-carboxamide
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Record name CABERGOLINE
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Record name Cabergoline
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Melting Point

102-104 °C, 102 - 104 °C
Record name Cabergoline
Source DrugBank
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Record name Cabergoline
Source Human Metabolome Database (HMDB)
URL http://www.hmdb.ca/metabolites/HMDB0014393
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.

Retrosynthesis Analysis

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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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Q & A

Q1: What is the primary mechanism of action of Cabergoline?

A: Cabergoline exerts its therapeutic effect primarily by acting as a dopamine receptor agonist, exhibiting a high affinity for the dopamine D2 receptor subtype. [, , ] This interaction mimics the action of dopamine, a neurotransmitter, leading to a cascade of downstream effects.

Q2: How does Cabergoline's interaction with dopamine D2 receptors affect prolactin secretion?

A: Prolactin secretion from the pituitary gland is under tonic inhibitory control by dopamine. By binding to D2 receptors on lactotroph cells in the pituitary gland, Cabergoline inhibits the synthesis and release of prolactin. [, , , ]

Q3: Beyond prolactin, what other hormonal or physiological processes are influenced by Cabergoline?

A: Cabergoline's action on dopamine receptors extends beyond prolactin regulation. It can also affect growth hormone secretion, potentially finding application in managing acromegaly. [, , ] Additionally, its influence on the dopaminergic system suggests potential applications in treating conditions like Parkinson's disease. [, , , ]

Q4: What is the molecular formula and weight of Cabergoline?

A: Cabergoline is represented by the molecular formula C26H37N5O2 and has a molecular weight of 451.6 g/mol. []

Q5: Is there any available spectroscopic data for Cabergoline?

A: While the provided research doesn't delve into specific spectroscopic data, techniques like nuclear magnetic resonance (NMR) and mass spectrometry (MS) are commonly employed for the structural characterization of compounds like Cabergoline. []

Q6: Is there information available regarding the material compatibility and stability of Cabergoline under various conditions?

A6: The provided research focuses primarily on Cabergoline's pharmacological properties and applications in biological systems. Specific details regarding its material compatibility and stability in non-biological contexts are not discussed.

Q7: Are there any known factors that influence the pharmacokinetics of Cabergoline?

A: Concomitant administration of drugs like clarithromycin, a potent inhibitor of CYP3A4 (a key enzyme involved in drug metabolism), can significantly increase the blood concentration of Cabergoline. []

Q8: What are the primary clinical applications of Cabergoline?

A: Cabergoline is primarily prescribed for the treatment of hyperprolactinemia, often caused by prolactinomas. [, , , , ] Its efficacy in normalizing prolactin levels, restoring ovulation and fertility in women, and reducing tumor size has been well-documented. [, , , , ]

Q9: Can Cabergoline be used during pregnancy?

A: While the use of Cabergoline during pregnancy has been reported, and available data suggests it may be relatively safe, bromocriptine, another dopamine agonist, has a larger safety database and a more established safety record for use during pregnancy. []

Q10: Is Cabergoline effective in treating conditions other than hyperprolactinemia?

A: Emerging research suggests potential applications for Cabergoline in managing acromegaly, either as monotherapy or in combination with other drugs like pegvisomant. [, , ] Additionally, its use in treating Parkinson's disease and restless legs syndrome has been explored. [, , , ]

Q11: Are there alternative treatment options for individuals with Cabergoline-resistant prolactinomas?

A: In cases of Cabergoline resistance, alternative dopamine agonists like bromocriptine might be considered, although they often have a less favorable side-effect profile. [] Other options include surgery or radiotherapy. [, ]

Q12: Are there any specific drug delivery or targeting strategies being explored for Cabergoline?

A12: The provided research primarily focuses on Cabergoline's systemic effects. Targeted drug delivery strategies are not extensively discussed within this context.

Q13: What analytical methods are commonly used to characterize and quantify Cabergoline?

A: Techniques like high-performance liquid chromatography (HPLC) coupled with mass spectrometry (MS) are commonly employed to analyze Cabergoline and its metabolites. []

Q14: Is there information available on the environmental impact and degradation of Cabergoline?

A14: The provided research primarily focuses on the pharmacological aspects of Cabergoline in treating human conditions. Environmental impact and degradation are not discussed within this scope.

Q15: Are there any cross-disciplinary applications or research synergies related to Cabergoline?

A: Research on Cabergoline spans various disciplines, including endocrinology, neurology, and pharmacology. Its mechanisms of action and effects on hormone regulation have implications for understanding pituitary gland function and dopamine signaling pathways. [, , , , , , , , , , , , , , ]

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