TCB-2

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. 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 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]

TCB-2
Clinical data
Routes of
administration		Oral
ATC code
  • none
Legal status
Legal status
  • In General Unscheduled
Identifiers
IUPAC name
  • [(7R)-3-Bromo-2,5-dimethoxy-bicyclo[4.2.0]octa-1,3,5-trien-7-yl]methanamine
CAS Number
PubChem CID
ChemSpider
UNII
ChEMBL
Chemical and physical data
FormulaC11H14BrNO2
Molar mass272.142 g·mol−1
3D model (JSmol)
SMILES
  • COc1c(Br)cc(OC)c2c1CC2CN
InChI
  • InChI=1S/C11H14BrNO2/c1-14-9-4-8(12)11(15-2)7-3-6(5-13)10(7)9/h4,6H,3,5,13H2,1-2H3/t6-/m0/s1
  • Key:MPBCKKVERDTCEL-LURJTMIESA-N
  (verify)

See also

References
  1. 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.
  2. 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.
  3. 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.
  4. 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.
  5. 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.
  6. 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: 403–13. doi:10.1016/j.neuropharm.2012.06.007. PMC 3477617. PMID 22722027.
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