List of miscellaneous 5HT2A agonists

Last updated

This is a list of agonists of the serotonin receptor subtype 5-HT2A (and other 5-HT2 subtypes to a varying extent) which fall outside the common structural classes. Most agonists at this receptor are either substituted phenethylamine derivatives from the 2C, DOx and 25-NB groups, or substituted tryptamines and related compounds along with more complex derivatives of these such as lysergamides and iboga-type alkaloids. [1] There are however numerous 5-HT2A receptor agonists which do not fall within any of these groups, some representative examples of which are listed below. Ki and EC50 values vary depending on the assay conditions used and so may not be directly comparable between sources. Many of these compounds have been designed to be non-psychoactive derivatives for medical applications, and it should not be assumed that a compound which acts as a 5-HT2A agonist will necessarily be psychedelic in nature. [2]

StructureNameChemical nameh5-HT2A Ki (EC50) (nM)PubChemCAS numberReference
11a from Bioorg Med Chem Lett 2003, 13, 2369 structure.png Compound 11a11-chloro-2,3,4,5-tetrahydro-1H-[1,4]diazepino[1,7-a]indole6.5 20726100 599173-28-1 [3]
23 from Bioorg Med Chem Lett 2003, 13, 2369 structure.png Compound 239-Chloro-7-(2-ethoxy-phenyl)-2,3,4,5-tetrahydro-1H-[1,4]diazepino[1,7-a]indole32 44315398 599173-25-8 [3]
10d from Bioorg Med Chem Lett 2005, 15, 1467 structure.png Compound 10d7-Benzyloxy-8-bromo-1-methyl-2,3,4,5-tetrahydro-1H-3-benzazepine22 10472780 616201-60-6 [4]
22.67 from WO 2009-079765 structure.png Example 22.674-(6,7,8,9-tetrahydro-5H-pyrido[2,3-d]azepin-2-yl)thiomorpholine21 44124494 [5]
3d from J Med Chem 2013, 56, 1211 structure.png Compound 3d (N-Bn-THAZ)2-benzyl-5,6,7,8-tetrahydro-4H-[1,2]oxazolo[4,5-d]azepin-3-one(549) 14515725 125115-66-4 [6]
11 from WO 2021-076572 structure.png Compound 11(3R)-N,N-diethyl-5-(1H-indol-4-yl)-1-methyl-3,6-dihydro-2H-pyridine-3-carboxamide(<10) 156278040 [7]
106 from ACS Med Chem Lett 2022, 13, 4, 648 structure.png Compound 1066-chloro-1-(2,4,5-trimethoxyphenyl)-2,3,4,9-tetrahydro-1H-pyrido[3,4-b]indole 4376990 528525-37-3 [8]
6c from J Med Chem 2023, 66, 11536 structure.png Compound 6c(6S)-2,3-dichloro-7,8,9,10-tetrahydro-6H-6,9-epiminocyclohepta[b]quinoxaline(400) [9]
WO2004-058722-ex70 structure.png Compound 703-(4-bromo-2-methylpyrazol-3-yl)-N-(4-chlorophenyl)-4-methoxyaniline1.77 9952456 [10]
22jmedchem2007-50-1367 structure.png Compound 227-(trifluoromethoxy)-2,3,4,10b-tetrahydro-1H-pyrazino[1,2-b]isoindol-6-one67 (87) 11448649 [10]
WO2021-0137908-1 structure.png Example 1 (ZC-B)3-(4-bromo-2,5-dimethoxyphenyl)azetidine(1.6) 156337249 2641630-65-9 [11]
2CB-AR structure.png 2C-B-aminorex 5-(4-bromo-2,5-dimethoxyphenyl)-4,5-dihydro-1,3-oxazol-2-amine 165360199 [12]
2CB-norphenmetrazine structure.png 2-(2,5-dimethoxy-4-bromophenyl)morpholine2-(2,5-dimethoxy-4-bromophenyl)morpholine20.6 11429275 [13]
DM-506 structure.png DM-506 3-methyl-2,4,5,6-tetrahydro-1H-azepino[4,5-b]indole 24183 7546-66-9 [14]
LPH-5 structure.png LPH-5 (3S)-3-[2,5-dimethoxy-4-(trifluoromethyl)phenyl]piperidine(3.2) 156337168 2641630-97-7 [15]
2C-B-PP Structure.svg 2C-B-PP 1-(2,5-dimethoxy-4-bromophenyl)piperazine 4738744 100939-87-5 [16]
Cis-urocanic-acid structure.png cis-urocanic acid (cis-UCA)(Z)-3-(1H-imidazol-5-yl)prop-2-enoic acid4.6 1549103 7699-35-6 [17] [18] [19]
CPD-1 Structure.svg CPD-1 (3S)-3-Methyl-1-[4-(trifluoromethyl)-1-benzofuran-7-yl]piperazine 9925822 325145-37-7 [20]
Efavirenz.svg Efavirenz (4S)-6-Chloro-4-(2-cyclopropylethynyl)-4-(trifluoromethyl)-2,4-dihydro-1H-3,1-benzoxazin-2-one 64139 154598-52-4 [21]
GM-2505 [22]
IHCH-7079 structure.png IHCH-7079(6bR,10aS)-8-(2-Methoxyphenethyl)-3-methyl-2,3,6b,7,8,9,10,10a-octahydro-1H-pyrido[3',4':4,5]pyrrolo[1,2,3-de]quinoxaline 169488014 2957888-63-8 [23]
IHCH-7113.svg IHCH-7113 (6bR,10aS)-3-methyl-2,3,6b,7,8,9,10,10a-octahydro-1H-pyrido[3',4':4,5]pyrrolo[1,2,3-de]quinoxaline 21302499 313368-85-3 [23]
 ? ITI-1549  ?10.2 ? ? [24]
NDTDI structure.png NDTDI N,N-diethyl-3-[methyl(1,3,4,5-tetrahydrobenzo[cd]indol-4-yl)amino]propanamide 163192742 [25]
Mefloquine structure without stereochemistry.svg Mefloquine 2,8-bis(trifluoromethyl)quinolin-4-yl-(2-piperidyl)methanol 40692 53230-10-7 [26]
Org12962 structure.png ORG-12962 1-(5-trifluoromethyl-6-chloropyridin-2-yl)piperazine 9796408 210821-63-9 [27]
ORG-37684.svg ORG-37684 (3S)-3-[(2,3-dihydro-5-methoxy-1H-inden-4-yl)oxy]pyrrolidine 9794656 213007-95-5 [28]
OSU-6162.svg OSU-6162 (3S)-3-[3-(methylsulfonyl)phenyl]-1-propylpiperidine 9795741 156907-84-5 [29]
PHA-57378.svg PHA-57378 2,7,8,9,10,11-hexahydro-1H-azepino[4,5-b][1,4]oxazino[2,3,4-hi]indole4.1 10198481 303798-94-9 [3]
P-54 structure.png P-542-(5-methoxypyrazolo[1,5-a]pyridin-3-yl)-N,N-dimethylethanamine 168946740 [30]
I-28 structure.png I-28N-[2-(8-methoxynaphthalen-1-yl)ethyl]-N-methylpropan-2-amine 170604481 [31]
R69 structure.png (R)-69 3-[(5R)-5-methyl-1,2,5,6-tetrahydropyridin-3-yl]-1H-pyrrolo[2,3-b]pyridine 164513426 [32]
RS134-49 structure.png RS134-49 4-methyl-3-(1,2,3,6-tetrahydropyridin-5-yl)-1H-indole 168941768 [33] [34]
RH-34 structure.png RH-34 3-[2-(2-methoxybenzylamino)ethyl]-1H-quinazoline-2,4-dione 10041987 1028307-48-3 [35]
SCHEMBL5334361.svg SCHEMBL5334361 7-[(3-methoxyphenoxy)methyl]-2,3,4,5-tetrahydro-1H-3-benzazepine(0.4) 59027940 959867-47-1 [36]
Tabernanthalog.svg Tabernanthalog 8-methoxy-3-methyl-2,4,5,6-tetrahydro-1H-azepino[4,5-b]indole 146026994 2483829-59-8 [37]
TKU-II-100 structure.png TKU-II-100[(1S,2S)-2-(2-fluorophenyl)cyclopropyl]methanamine0.62 44572747 [38]
WAY-470 structure.png WAY-470 1,16-diazatetracyclo[8.8.1.02,9.014,19]nonadeca-2(9),10,12,14(19)-tetraene36 10037962 [39]
WXVL BT0793LQ2118 structure.png WXVL_BT0793LQ21186-fluoro-4-(1-methyl-1,2,5,6-tetrahydropyridin-3-yl)-1H-indole [40]
Z2825713589 structure.png Z2825713589(4-amino-3,3a,4,5,6,6a-hexahydro-1H-cyclopenta[c]pyrrol-2-yl)-(6-methoxypyrazin-2-yl)methanone 167788805 [40]
Z2876442907 structure.png Z2876442907ethyl 2-[[2-(4-methyl-1H-indol-3-yl)ethylamino]methyl]-1,3-thiazole-5-carboxylate 167850865 [40]
Z3517967757 structure.png Z3517967757 4-[1-(1-pyrimidin-2-ylethyl)piperidin-3-yl]phenol 167949972 [40]
Z3881312504 structure.png Z38813125042-bromo-4-[2-[methyl-[2-(1,3-thiazol-2-yl)ethyl]amino]ethyl]phenol 167904469 [40]
Z4154032166 structure.png Z41540321662,2,2-trifluoro-1-[6-(1,2,3,6-tetrahydropyridin-5-yl)pyridin-2-yl]ethanol 167878716 [40]
Z5247692566 structure.png Z52476925664-[(3,3-dimethyloxolan-2-yl)methyl]-3-[(1H-indol-3-yl)methyl]morpholine [40]
Z5247692629 structure.png Z52476926291-(1-bicyclo[1.1.1]pentanyl)-4-[[5-(4-chlorophenyl)-1H-pyrazol-4-yl]methyl]piperazine 166358273 [40]

See also

Related Research Articles

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Psilocin, also known as 4-hydroxy-N,N-dimethyltryptamine (4-OH-DMT), is a substituted tryptamine alkaloid and a serotonergic psychedelic. It is present in most psychedelic mushrooms together with its phosphorylated counterpart psilocybin. Psilocin is a Schedule I drug under the Convention on Psychotropic Substances. Acting on the serotonin 5-HT2A receptors, psilocin's psychedelic effects are directly correlated with the drug's occupancy at these receptor sites. The subjective mind-altering effects of psilocin are highly variable and are said to resemble those of lysergic acid diethylamide (LSD) and N,N-dimethyltryptamine (DMT).

<span class="mw-page-title-main">2C-B-FLY</span> Psychedelic designer drug

2C-B-FLY is a psychedelic phenethylamine and designer drug of the 2C family. It was first synthesized in 1996 by Aaron Monte, Professor of Chemistry at UW-La Crosse.

5-HT<sub>2A</sub> receptor Subtype of serotonin receptor

The 5-HT2A receptor is a subtype of the 5-HT2 receptor that belongs to the serotonin receptor family and is a G protein-coupled receptor (GPCR). The 5-HT2A receptor is a cell surface receptor, but has several intracellular locations.

<span class="mw-page-title-main">Serotonin receptor agonist</span> Neurotransmission-modulating substance

A serotonin receptor agonist is an agonist of one or more serotonin receptors. They activate serotonin receptors in a manner similar to that of serotonin, a neurotransmitter and hormone and the endogenous ligand of the serotonin receptors.

<span class="mw-page-title-main">Ariadne (drug)</span> Psychoactive phenethylamine drug

Ariadne, also known chemically as 4C-D or 4C-DOM, by its developmental code name BL-3912, and by its former tentative brand name Dimoxamine, is a little-known psychoactive drug of the phenethylamine, amphetamine, and phenylisobutylamine families. It is a homologue of the psychedelics 2C-D and DOM.

5-HT<sub>2B</sub> receptor Mammalian protein found in Homo sapiens

5-Hydroxytryptamine receptor 2B (5-HT2B) also known as serotonin receptor 2B is a protein that in humans is encoded by the HTR2B gene. 5-HT2B is a member of the 5-HT2 receptor family that binds the neurotransmitter serotonin (5-hydroxytryptamine, 5-HT). Like all 5-HT2 receptors, the 5-HT2B receptor is Gq/G11-protein coupled, leading to downstream activation of phospholipase C.

<span class="mw-page-title-main">TCB-2</span> Potent hallucinogenic drug discovered in 2006

TCB-2 is a hallucinogen discovered in 2006 by Thomas McLean working in the lab of David Nichols at Purdue University. It is a conformationally-restricted derivative of the phenethylamine 2C-B, also a hallucinogen, and acts as a potent agonist for the 5-HT2A and 5-HT2C receptors with a Ki of 0.26 nM at the human 5-HT2A receptor.

<span class="mw-page-title-main">PNU-22394</span> Chemical compound

PNU-22394 is a drug which acts as an agonist at serotonin 5-HT2 receptors, with strongest binding affinity for 5-HT2A and 5-HT2C and slightly weaker at 5-HT2B, although it is only a full agonist at 5-HT2C, but partial agonist at 5-HT2A and 5-HT2B. It has anorectic effects in both animal studies and human trials, along with "Pro-Cognitive Properties", although it has never been developed for medical use.

<span class="mw-page-title-main">SB-206553</span> Chemical compound

SB-206553 is a drug which acts as a mixed antagonist for the 5-HT2B and 5-HT2C serotonin receptors. It has anxiolytic properties in animal studies and interacts with a range of other drugs. It has also been shown to act as a positive allosteric modulator of α7 nicotinic acetylcholine receptors. Modified derivatives of SB-206553 have been used to probe the structure of the 5-HT2B receptor.

<span class="mw-page-title-main">Substituted tryptamine</span> Class of indoles

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<span class="mw-page-title-main">5-MeO-NBpBrT</span> Chemical compound

5-MeO-NBpBrT is a N-substituted member of the methoxytryptamine family of compounds. Like other such compounds it acts as an antagonist for the 5-HT2A receptor, with a claimed 100x selectivity over the closely related 5-HT2C receptor. While N-benzyl substitution of psychedelic phenethylamines often results in potent 5-HT2A agonists, it had been thought that N-benzyl tryptamines show much lower efficacy and are either very weak partial agonists or antagonists at 5-HT2A, though more recent research has shown stronger agonist activity for 3-substituted benzyl derivatives. Extending the benzyl group to a substituted phenethyl can also recover agonist activity in certain cases.

<span class="mw-page-title-main">PNU-181731</span> Chemical compound

PNU-181731 is a drug which acts as an agonist at serotonin 5-HT2 receptors, with strongest binding affinity for the 5-HT2C subtype at 4.8nM, and weaker 5-HT2A affinity of 18nM. It has anxiolytic effects in animal studies with around one tenth the potency of alprazolam and no significant ataxia or other side effects noted.

<span class="mw-page-title-main">PHA-57378</span> Chemical compound

PHA-57378 is a drug which acts as an agonist at serotonin 5-HT2 receptors, having a binding affinity of 4.1 nM at the 5-HT2A subtype and 4.3 nM at 5-HT2C. It has anxiolytic effects in animal studies.

<span class="mw-page-title-main">25CN-NBOH</span> Chemical compound

25CN-NBOH is a compound indirectly derived from the phenethylamine series of hallucinogens, which was discovered in 2014 at the University of Copenhagen. This compound is notable as one of the most selective agonist ligands for the 5-HT2A receptor yet discovered, with a pKi of 8.88 at the human 5-HT2A receptor and with 100x selectivity for 5-HT2A over 5-HT2C, and 46x selectivity for 5-HT2A over 5-HT2B. A tritiated version of 25CN-NBOH has also been accessed and used for more detailed investigations of the binding to 5-HT2 receptors and autoradiography.

<span class="mw-page-title-main">1-Methylpsilocin</span> Chemical compound

1-Methylpsilocin (developmental code names CMY, CMY-16) is a tryptamine derivative developed by Sandoz which acts as a selective agonist of the serotonin 5-HT2C receptor (IC50Tooltip half-maximal inhibitory concentration of 12 nM, vs. 633 nM at 5-HT2A), and an inverse agonist at 5-HT2B (Ki of 38 nM). While 1-methylpsilocin does have higher affinity for 5-HT2C than 5-HT2A, it does produce a head-twitch response in mice that is dependent on 5-HT2A, so it is not entirely free of effects on 5-HT2Ain vivo. In contrast to psilocin, 1-methylpsilocin did not activate 5-HT1A receptors in mice.

<span class="mw-page-title-main">25-NB</span> Family of serotonergic psychedelics

The 25-NB (25x-NBx) series, sometimes alternatively referred to as the NBOMe compounds, is a family of serotonergic psychedelics. They are substituted phenethylamines and were derived from the 2C family. They act as selective agonists of the serotonin 5-HT2A receptor. The 25-NB family is unique relative to other classes of psychedelics in that they are, generally speaking, extremely potent and relatively selective for the 5-HT2A receptor. Use of NBOMe series drugs has caused many deaths and hospitalisations since the drugs popularisation in the 2010s. This is primarily due to their high potency, unpredictable pharmacokinetics, and sellers passing off the compounds in the series as LSD.

<span class="mw-page-title-main">DOB-FLY</span> Psychedelic designer drug

DOB-FLY is a recreational designer drug with psychedelic effects. It can be regarded as the alpha-methyl derivative of 2C-B-FLY or the partially saturated counterpart of bromo-dragonfly. Unlike bromo-dragonfly, DOB-FLY is only slightly more potent than DOB itself, with an active dose in humans of around 1 mg.

<span class="mw-page-title-main">LPH-5 (drug)</span> New psychedelic drug

LPH-5 is a psychedelic discovered by Emil Marcher-Rørsted, Jesper L. Kristensen and Anders A. Jensen at Danish biopharmaceutical company Lophora. It is a conformationally-restricted derivative of the phenethylamine 2C-TFM, also a hallucinogen, and acts as a potent agonist of the 5-HT2A receptor (EC50 = 3.2 nM, Emax = 78%). It shows 10- to 100-fold selectivity for the 5-HT2A receptor over the 5-HT2B and 5-HT2C receptors and, along with related compounds like 25CN-NBOH, is said to be one of the few truly selective 5-HT2A receptor agonists. LPH-5 is expected to avoid the cardiac risks of 5-HT2B receptor activation.

<span class="mw-page-title-main">CYB210010</span> Chemical compound

CYB210010, also known as 2C-T-TFM, is a lesser-known psychedelic drug of the phenethylamine family related to compounds such as 2C-T and 2C-T-21.

ITI-1549 is a putatively non-hallucinogenic serotonin 5-HT2A receptor agonist which is under development for the treatment of mood disorders and other psychiatric disorders. In addition to acting at the serotonin 5-HT2A receptor, it is also an antagonist of the serotonin 5-HT2B receptor and an agonist of the serotonin 5-HT2C receptor. The drug's route of administration has not been specified.

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