TCB-2 is a hallucinogen discovered in 2006 by Thomas McLean working in the lab of David Nichols at Purdue University.[1] 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.
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| Routes of administration | Oral |
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| Formula | C11H14BrNO2 |
| Molar mass | 272.142 g·mol−1 |
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In drug-substitution experiments in rats, TCB-2 was found to be of similar potency to both LSD and Bromo-DragonFLY, ranking it among the most potent phenethylamine hallucinogens yet discovered.[1] This high potency and selectivity has made TCB-2 useful for distinguishing 5-HT2A receptor-mediated responses from those produced by other similar receptors.[2]
TCB-2 has similar but not identical effects in animals to related phenethylamine hallucinogens such as DOI, and has been used for studying how the function of the 5-HT2A receptor differs from that of other serotonin receptors in a number of animal models, such as studies of cocaine addiction and neuropathic pain.[3][4][5][6] It has also been found to produce rapid antidepressant-, anti-anhedonic-, and anxiolytic-like effects in animals.[7]
See also
editReferences
edit- ^ a b McLean TH, Parrish JC, Braden MR, Marona-Lewicka D, Gallardo-Godoy A, Nichols DE (September 2006). "1-Aminomethylbenzocycloalkanes: conformationally restricted hallucinogenic phenethylamine analogues as functionally selective 5-HT2A receptor agonists". Journal of Medicinal Chemistry. 49 (19): 5794–803. CiteSeerX 10.1.1.688.9849. doi:10.1021/jm060656o. PMID 16970404.
- ^ Chang CW, Poteet E, Schetz JA, Gümüş ZH, Weinstein H (2009). "Towards a quantitative representation of the cell signaling mechanisms of hallucinogens: measurement and mathematical modeling of 5-HT1A and 5-HT2A receptor-mediated ERK1/2 activation". Neuropharmacology. 56 (Suppl 1): 213–25. doi:10.1016/j.neuropharm.2008.07.049. PMC 2635340. PMID 18762202.
- ^ Fox MA, French HT, LaPorte JL, Blackler AR, Murphy DL (September 2010). "The serotonin 5-HT(2A) receptor agonist TCB-2: a behavioral and neurophysiological analysis". Psychopharmacology. 212 (1): 13–23. doi:10.1007/s00213-009-1694-1. PMID 19823806. S2CID 22499760.
- ^ Aira Z, Buesa I, Salgueiro M, Bilbao J, Aguilera L, Zimmermann M, Azkue JJ (July 2010). "Subtype-specific changes in 5-HT receptor-mediated modulation of C fibre-evoked spinal field potentials are triggered by peripheral nerve injury". Neuroscience. 168 (3): 831–41. doi:10.1016/j.neuroscience.2010.04.032. PMID 20412834. S2CID 207248287.
- ^ Katsidoni V, Apazoglou K, Panagis G (February 2011). "Role of serotonin 5-HT2A and 5-HT2C receptors on brain stimulation reward and the reward-facilitating effect of cocaine". Psychopharmacology. 213 (2–3): 337–54. doi:10.1007/s00213-010-1887-7. PMID 20577718. S2CID 1580337.
- ^ Zhang G, Ásgeirsdóttir HN, Cohen SJ, Munchow AH, Barrera MP, Stackman RW (January 2013). "Stimulation of serotonin 2A receptors facilitates consolidation and extinction of fear memory in C57BL/6J mice". Neuropharmacology. 64 (1): 403–13. doi:10.1016/j.neuropharm.2012.06.007. PMC 3477617. PMID 22722027.
- ^ Koike H, Horinokita I, Suzuki M, Futamura T (December 2022). "ACNP 61st Annual Meeting: Poster Abstracts P271-P540: P360. A Potent 5-HT2A Receptor Agonist TCB-2 Exerts Rapid Antidepressant-Like and Anxiolytic-Like Effects in Mice". Neuropsychopharmacology. 47 (Suppl 1): 220–370 (270–271). doi:10.1038/s41386-022-01485-0. PMC 9714399. PMID 36456694.