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Dopamine receptor agonists and antagonists act on the five G protein-coupled receptors that respond to dopamine. The receptors form two groups, with D1 and D5 in the D1-like class and D2, D3 and D4 in the D2-like class. D1-like receptors stimulate adenylyl cyclase, whereas D2-like receptors inhibit it and lower cyclic adenosine monophosphate (cAMP) levels. Dopamine signaling controls movement, reward, motivation and hormone release, and is studied in Parkinson's disease and psychiatric research. Ligands here include the agonist rotigotine HCl, the D2 antagonists L-741626 and domperidone, and the D3-preferring ligand BP897.
Synonyms: HRP 913
Neflumozide is a potent dopamine antagonist classified as a benzisoxazole derivative. It exhibits significant antipsychotic activity, making it a valuable tool for investigating psychosis and related conditions. This compound is useful in preclinical research aimed at understanding dopamine receptor modulation and its implications in psychiatric disorders.
Synonyms: MD 790501
Tropapride is a selective antagonist of the dopamine D2 receptor. It exhibits significant biological activity by modulating dopaminergic signaling, making it a valuable tool for investigating neurological disorders. This compound is commonly utilized in research focused on conditions such as schizophrenia, Parkinson's disease, and other related neurological dysfunctions.
Synonyms: (±)-Molindone; SPN-810M
Molindone is a potent antagonist of dopamine D2 and D5 receptors, classified as an indole derivative. This compound exhibits significant biological activity in modulating dopaminergic neurotransmission and is primarily used in the research of schizophrenia and severe mental illnesses. Its mechanism of action makes it a valuable tool for studying dopaminergic pathways and their implications in psychiatric disorders.
Synonyms: Ro 2-9578 free base
Trimethobenzamide is a D2 receptor blocker that serves as an effective antiemetic. It is primarily used to prevent nausea and vomiting, making it valuable in various clinical settings. This compound can be utilized in research applications focused on gastrointestinal motility and central nervous system interactions.
RBI-257 maleate is a potent antagonist of the dopamine D4 receptor, exhibiting a Ki value of 0.3 nM. This compound has demonstrated significant biological activity in modulating dopaminergic signaling and is valuable for research applications related to neuropharmacology and psychiatric disorders. Its selectivity for the D4 receptor makes it a suitable tool for investigating the role of dopamine in various behavioral and neurological models.
L-745870 trihydrochloride is a selective antagonist of the dopamine D4 receptor, characterized by a Ki value of 0.43 nM. This compound demonstrates reduced affinity for D2 and D3 receptors, with Ki values of 960 nM and 2300 nM, respectively. Additionally, L-745870 shows moderate interactions with 5-HT2 receptors, sigma sites, and α-adrenoceptors. It is primarily utilized in research focused on neuropharmacology and the modulation of dopaminergic pathways.
Synonyms: Trimopam; SCH-12679
Trepipam is a D1-dopamine receptor antagonist, primarily utilized for its neuroprotective properties. It has demonstrated efficacy in reducing self-injurious behavior in 6-OHDA-lesioned rats, making it a valuable tool in behavioral neuroscience studies. Trepipam has potential applications in researching conditions such as epilepsy and anxiety disorders, facilitating insights into dopaminergic signaling pathways.
Tiapride is a selective antagonist of the D2 and D3 dopamine receptors, exhibiting IC50 values of 110-320 nM and 180 nM, respectively. This compound demonstrates anti-dyskinetic and anxiolytic properties, making it valuable in neurological research. Tiapride is classified as a neuroleptic agent and is utilized in studies related to movement disorders and anxiety-related conditions.
SV 156 is a highly selective antagonist of the D2 dopamine receptor, exhibiting a Ki value of 2.5 nM for human D2 receptors. With approximately 40-fold selectivity for the D2 receptor over the D3 subtype, SV 156 is primarily utilized in research related to L-DOPA-associated abnormal involuntary movements (AIMs). This compound serves as a valuable tool for investigating the mechanisms underlying dopaminergic signaling and movement disorders.
(±)-BAK2-66 is a potent dopamine D3 receptor antagonist, exhibiting Ki values of 1 nM for the D3 receptor and 960 nM for the D2 receptor. This compound is valuable for research applications focused on modulating dopaminergic signaling and exploring mechanisms underlying addiction in animal models. Its selectivity makes it an important tool for studying the role of the D3 receptor in various neurological conditions.
Synonyms: (-)-Remoxipride
(S)-Remoxipride is a selective antagonist of the dopamine D2 receptor, exhibiting an IC50 value of 1.57 μM. This compound is primarily utilized in research pertaining to psychotic disorders, offering insights into dopaminergic signaling and its implications in various neuropsychiatric conditions. Its specificity for the D2 receptor makes it a valuable tool for studying the effects of dopamine modulation in both in vitro and in vivo settings.
D1R Antagonist 1 is a selective antagonist of the dopamine D1 receptor (D1R), functioning through the inhibition of G-protein-mediated and β-arrestin-mediated signaling pathways. This compound is valuable for research focused on dopamine-related neuropharmacology, allowing for the investigation of D1R-linked physiological processes and potential therapeutic applications in dopamine-related disorders.
AVE-5997 is a selective D3 dopamine receptor antagonist. It effectively reduces hyperactivity induced by MK-801, making it a valuable tool for studying dopaminergic dysregulation. This compound is particularly relevant in the research of schizophrenia and related neuropsychiatric disorders.
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N-Methylspiroperidol is a potent D2 receptor antagonist that plays a critical role in neuropharmacological research. It can be utilized in PET (Positron Emission Tomography) imaging studies, allowing for the investigation of binding dynamics to the 5-HT2C receptor. This compound is particularly valuable for assessing neurotransmitter interactions, including the competitive effects of dopamine, thereby enhancing our understanding of neuropsychiatric disorders.
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(Z)-Flupenthixol decanoate is a potent antagonist of dopamine D1 and D2 receptors, functioning primarily to inhibit dopaminergic signaling. This compound exhibits significant antipsychotic activity, making it valuable in the study of psychiatric disorders and neuropharmacology. Research applications include investigations into the modulation of dopaminergic pathways and the evaluation of therapeutic strategies for schizophrenia and related conditions.
Synonyms: R-(+)-SCH-23390
SCH-23390 is a potent antagonist of dopamine D1-like receptors, exhibiting Ki values of 0.2 nM for the D1 subtype and 0.3 nM for the D5 subtype. This compound plays a significant role in behavioral research by shortening the latency period for cocaine-induced lever pressing in rat models. Additionally, SCH-23390 has been shown to eliminate generalized seizures induced by chemical convulsants, making it valuable in the study of neurological disorders associated with the dopamine system.
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Synonyms: (±)-SKF-38393 hydrochloride; SKF-38393A hydrochloride
(R)-SKF 38393 hydrochloride is a potent and selective antagonist of the D1 dopamine receptor. This compound effectively inhibits G protein-coupled inwardly rectifying potassium (GIRK) channels, making it a valuable tool for exploring dopamine signaling pathways. It is commonly used in research applications focused on neuropharmacology and the modulation of dopaminergic systems.
JHW007 hydrochloride is a selective antagonist of dopamine receptors, primarily targeting the D2 subtype. It demonstrates notable activity in modulating neurotransmitter release and has been investigated for its potential effects in cocaine-related research. This compound is valuable for studies exploring addiction mechanisms and neuropharmacology.
Synonyms: (1S,5R)-GSK598809
(-)-GSK598809 is a selective antagonist of the dopamine D3 receptor (DRD3). This compound exhibits potent inhibition of DRD3 activity, making it a valuable tool for research into neuropsychiatric disorders and addiction. Its specificity for DRD3 allows for detailed investigations into dopamine-related signaling pathways and their implications for various therapeutic areas.
Nor-SCH-12679 maleate is a dopamine receptor antagonist that plays a crucial role in research focused on dopaminergic signaling pathways. By inhibiting dopamine receptor activity, it can counteract the stimulatory effects of other compounds, such as peppermint oil, on locomotor activity in experimental models. This compound is valuable for studies investigating the modulation of behavior and neuropharmacological effects related to dopamine signaling.
JNJ-37822681 is a fast-dissociating antagonist of the D2 dopamine receptor, primarily employed in the research of schizophrenia. This compound demonstrates high specificity for D2 receptors and effectively increases levels of extracellular serotonin, dopamine, and norepinephrine within the rat cerebral cortex. Additionally, JNJ-37822681 exhibits antidepressant-like effects in the mouse tail suspension test while achieving favorable brain distribution and minimizing prolactin release, making it a valuable tool for neuroscience research.
Raclopride tartrate is a selective antagonist of the dopamine D2 and D3 receptors, exhibiting high binding affinity with Ki values of 1.8 nM and 3.5 nM, respectively. This compound demonstrates potential antipsychotic effects and is primarily utilized in research focused on the modulation of dopaminergic signaling. Its application extends to studying neuropsychiatric disorders and exploring therapeutic strategies for schizophrenia and related conditions.
S 33138 is a potent D3 receptor antagonist. This compound has demonstrated the ability to inhibit addictive behaviors in various animal models, as well as ameliorate cognitive deficits in rodent and primate models of schizophrenia and Parkinson's disease. S 33138 serves as a valuable tool for research applications focused on neurological disorders, advancing the understanding of pathophysiological mechanisms and potential therapeutic strategies.
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Berupipam hemifumarate is a selective dopamine D1 receptor antagonist, primarily utilized for investigating its role in psychotic disorders. It serves as a substrate for UDP-glucuronosyltransferase (UGT), exhibiting high affinity for UGT enzymes while displaying variability in glucuronidation rates across different species and genders. This compound is valuable for research focused on dopamine-mediated pathways and their implications in neuropsychiatric conditions.
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ST 198 is a selective D3 receptor (D3R) antagonist that demonstrates oral bioactivity. It effectively inhibits nicotine-induced conditioned place preference (CPP) at specific doses targeting D3R. This compound is valuable for research investigating neurological diseases and the mechanisms underlying dopaminergic signaling.
