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Nicotinic acetylcholine receptor (nAChR) agonists, antagonists and modulators act on ligand-gated cation channels. Each receptor is a pentamer of subunits arranged around a central pore that opens when acetylcholine binds. A refined structure of the Torpedo receptor at 4 Å resolution, published in 2005, resolved its ligand-binding, membrane and cytoplasmic regions. Muscle-type receptors mediate neuromuscular transmission, while neuronal subtypes such as α7 and α4β2 are studied in attention, memory and nicotine dependence. Agonists include PNU 282987, which is selective for α7, and the partial agonist varenicline. PNU-120596, described in 2005, is a positive allosteric modulator of α7 that enhances acetylcholine-evoked currents. Vecuronium bromide, a neuromuscular blocking agent, acts on the muscle-type receptor.
Spinosyn L is a selective agonist of nicotinic acetylcholine receptors (nAChR). It induces sustained neural excitation and paralysis in insects, demonstrating effective activity against various agricultural pests, including Lepidoptera and Diptera. This compound is valuable for research applications focused on developing novel pesticides and understanding insect physiology.
Synonyms: TC-5619 tosylate
Bradanicline tosylate is a selective agonist for the α7 nicotinic acetylcholine receptor (nAChR) with significant oral bioavailability and moderate blood-brain barrier penetration. It demonstrates high affinity and subtype specificity for human α7 nAChR, exerting antitussive effects through prolonged receptor activation. Bradanicline tosylate effectively inhibits cough responses induced by citric acid, bradykinin, and inhaled nicotine in a dose-dependent manner. This compound is well tolerated in preclinical studies, making it a valuable tool in research focused on chronic refractory cough and related therapeutic areas.
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SIB-1508Y is an orally active and selective agonist of the nicotinic acetylcholine receptor (nAChR). It holds potential for research applications related to parkinsonism and neurodegenerative disorders. Additionally, SIB-1508Y features an alkyne group, enabling its use as a click chemistry reagent for copper-catalyzed azide-alkyne cycloaddition (CuAAc) with azide-containing molecules.
Synonyms: ABT-126 citrate
Nelonicline citrate is a selective agonist of the α7 nicotinic acetylcholine receptor (nAChR) with high affinity, as demonstrated by a Ki value of 12.3 nM in human brain tissue. This compound is primarily utilized in research investigating schizophrenia and Alzheimer's disease, providing insights into the modulation of cognitive processes and synaptic plasticity associated with these neurological disorders. Its oral bioavailability makes it a valuable tool for in vivo studies.
Epibatidine is an α7 nicotinic acetylcholine receptor (nAChR) agonist with a Kd of 100 nM. This compound is a valuable tool for investigating neurodegenerative diseases such as Alzheimer's and Parkinson's, as well as psychiatric conditions like schizophrenia. By activating the α7nACh receptors, Epibatidine can provide insights into cholinergic signaling and its implications in these disorders.
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WYE-103914 is a selective agonist of the α7 nicotinic acetylcholine receptor (nAChR), exhibiting EC50 values of 0.49 µM for rat and 0.57 µM for human receptors. This compound is known to enhance cognitive functions and memory in various experimental models. It is also utilized in research focusing on schizophrenia and can be administered alongside antipsychotic therapies to investigate potential synergistic effects.
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Synonyms: TC-5619 hydrochloride
Bradanicline hydrochloride is a selective agonist for the α7 nicotinic acetylcholine receptor (nAChR), exhibiting an EC50 of 17 nM and a Ki of 1.4 nM for the human α7 nAChR. This compound demonstrates significant biological activity that supports research into cognitive disorders and schizophrenia. Its targeted mechanism makes it a valuable tool for studying therapeutic approaches in neuropsychiatric conditions.
SIB-1553A free base is an orally bioavailable agonist of nicotinic acetylcholine receptors (nAChRs), exhibiting selective activity towards receptors containing the β4 subunit. This compound serves as a selective ligand for neuronal nAChRs and demonstrates significant cognitive-enhancing properties. SIB-1553A free base shows therapeutic potential for addressing symptoms associated with Alzheimer's disease and other cognitive disorders in research applications.
CP-810123 is a brain-permeable agonist of the α7 nicotinic acetylcholine receptor (nAChR). It demonstrates significant potential in enhancing cognitive function and is valuable for investigating cognitive impairments associated with psychiatric and neurological disorders, including schizophrenia and Alzheimer's disease. This compound serves as an important tool for researchers exploring therapeutic strategies aimed at modulating cholinergic systems in the context of cognitive deficits.
RJR-2429 is a potent agonist of the α4β2 nicotinic acetylcholine receptor (nAChR) with an EC50 value of 59 nM and a binding affinity (Ki) of 1 nM. This compound is known to induce contraction in the ileum, making it relevant for studies examining gastrointestinal motility and nAChR-mediated signaling pathways. RJR-2429 serves as a valuable tool in pharmacological research focused on neuropharmacology and cholinergic function.
1,1-Dimethyl-4-acetylpiperazinium iodide is a potent agonist of nicotinic acetylcholine receptors (nAChRs), facilitating the opening of ion channels and leading to cell membrane depolarization. This compound is instrumental in studying synaptic transmission and has applications in neuropharmacology and neuromuscular research, providing insights into cholinergic signaling pathways and potential therapeutic interventions for related disorders.
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Synonyms: 2-Propylpiperidine
(±)-Coniine is a piperidine alkaloid known for its function as an nAChR agonist, demonstrating an EC50 of 0.3 mM. This compound exhibits acute toxicity in murine models, with an LD50 value of 7.7 mg/kg. Its unique properties make it valuable for research applications focused on neuromuscular transmission and toxicity studies.
Synonyms: 2-Hydroxyvarenicline
Hydroxy Varenicline is a metabolite of varenicline, functioning as a nicotinic acetylcholine receptor (nAChR) agonist. This compound exhibits key biological activity by modulating nAChR signaling, making it relevant for research on nicotine addiction and its neuropharmacological effects. Hydroxy Varenicline serves as a valuable tool in studies aimed at understanding receptor dynamics and developing therapeutic strategies for smoking cessation and related disorders.
Synonyms: ABT 894 benzenesulfonate
Sofinicline benzenesulfonate is a potent agonist of the nicotinic acetylcholine receptor, specifically targeting the α4β2 subtype with an IC50 of 0.1 nM. This compound has demonstrated potential to enhance cognitive functions, including attention and memory, making it a valuable tool in the investigation of cognitive impairments. Its applications extend to research on attention deficit hyperactivity disorder (ADHD) and other cognitive disorders.
TC-2216 is an agonist of the α4β2 neuronal nicotinic acetylcholine receptors (nAChRs). This compound demonstrates significant antidepressant and anxiolytic properties, validated by multiple animal models. TC-2216's modulation of nAChR activity represents its potential utility in neuropharmacological research and the development of therapeutic strategies for mood disorders.
(±) Anabasine is the racemic mixture of Anabasine, acting as an agonist of the alpha-7 nicotinic acetylcholine receptor (α7nAChR). This compound has demonstrated anti-inflammatory properties and insecticidal activity, making it relevant for research in neuropharmacology and pest control studies. Its biological activities encourage further investigations into its therapeutic potential and applications.
(±) Anabasine hydrochloride is a racemic mixture of the alkaloid Anabasine, functioning primarily as an agonist of the alpha-7 nicotinic acetylcholine receptor (α7nAChR). This compound demonstrates notable anti-inflammatory properties, making it useful in studies related to inflammation and neuropathology. Additionally, it exhibits insecticidal activity, proving beneficial in entomological research.
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Synonyms: SEN15924
WAY-361789 is an orally active agonist of the α7 nicotinic acetylcholine receptor (α7 nAChR), with an EC50 of 0.18 μM. This compound enhances cognitive function and shows promise in addressing cognitive deficits associated with Alzheimer's Disease and schizophrenia. It serves as a valuable tool for researchers investigating the role of α7 nAChR in neurodegenerative conditions and psychiatric disorders.
