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Substituted tryptamine

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Short description: Class of indoles


Substituted tryptamines, or simply tryptamines, also known as serotonin analogues (i.e., 5-hydroxytryptamine analogues), are organic compounds which may be thought of as being derived from tryptamine itself. The molecular structures of all tryptamines contain an indole ring system, joined to an amino (NH2) group via an ethyl (−CH2–CH2−) sidechain. In substituted tryptamines, the indole ring, sidechain, and/or amino group are modified by substituting another group for one of the hydrogen (H) atoms.

Well-known tryptamines include serotonin, an important neurotransmitter, and melatonin, a hormone involved in regulating the sleep-wake cycle. Tryptamine alkaloids are found in fungi, plants and animals; and sometimes used by humans for the neurological or psychotropic effects of the substance. Prominent examples of tryptamine alkaloids include psilocybin (from "psilocybin mushrooms") and DMT. In South America, dimethyltryptamine is obtained from numerous plant sources, like chacruna, and it is often used in ayahuasca brews. Many synthetic tryptamines have also been made, including the migraine drug sumatriptan, and psychedelic drugs. A 2022 study has found the variety of tryptamines present in wild mushrooms may affect the therapeutic impact.[1]

The tryptamine structure, in particular its indole ring, may be part of the structure of some more complex compounds, for example cyclized tryptamines like LSD, ibogaine, harmaline, mitragynine and yohimbine. A thorough investigation of dozens of tryptamine compounds was published by Alexander Shulgin and Ann Shulgin in 1997 under the title TiHKAL (Tryptamines I Have Known and Loved).[2]

Use and effects

The doses, potencies, durations, and effects of psychedelic tryptamines have been reviewed by Alexander Shulgin and other authors.[3][4][5][6][2][7][8][9][10][11]


References

  1. ↑ Chemistry, University of; Prague, Technology. "Concentrations of psychoactive compounds in mushrooms found to be extremely variable" (in en). https://phys.org/news/2022-12-psychoactive-compounds-mushrooms-extremely-variable.html. 
  2. ↑ 2.0 2.1 Shulgin, Alexander; Shulgin, Ann (September 1997). TiHKAL: The Continuation. Berkeley, California: Transform Press. ISBN 0-9630096-9-9. OCLC 38503252. http://www.erowid.org/library/books_online/tihkal/tihkal.shtml. 
  3. ↑ "Structure-activity relationships of the classic hallucinogens and their analogs". NIDA Res Monogr 146: 74–91. 1994. PMID 8742795. https://archives.nida.nih.gov/sites/default/files/monograph146.pdf#page=79. 
  4. ↑ "Basic Pharmacology and Effects". Hallucinogens: A Forensic Drug Handbook. Forensic Drug Handbook Series. Elsevier Science. 2003. pp. 67–137. ISBN 978-0-12-433951-4. https://web.archive.org/web/20250223164514/https://citeseerx.ist.psu.edu/document?repid=rep1&type=pdf&doi=6bb3a7499da8e9852b39cd4db16891147c83f5c6. 
  5. ↑ "Chemistry of Psychotomimetics". Psychotropic Agents, Part III: Alcohol and Psychotomimetics, Psychotropic Effects of Central Acting Drugs. Handbook of Experimental Pharmacology. 55 / 3. Berlin: Springer Berlin Heidelberg. 1982. pp. 3–29. doi:10.1007/978-3-642-67770-0_1. ISBN 978-3-642-67772-4. OCLC 8130916. https://bitnest.netfirms.com/external/10.1007/978-3-642-67770-0_1. 
  6. ↑ Alexander T. Shulgin (1980). "Hallucinogens". Burger's Medicinal Chemistry. 3 (4 ed.). New York: Wiley. pp. 1109–1137. ISBN 978-0-471-01572-7. OCLC 219960627. https://citeseerx.ist.psu.edu/document?repid=rep1&type=pdf&doi=6ac0c892ee380436f614d3aae0686ef617b2e0c5. 
  7. ↑ "Monoamine Transporter and Receptor Interaction Profiles in Vitro Predict Reported Human Doses of Novel Psychoactive Stimulants and Psychedelics". Int J Neuropsychopharmacol 21 (10): 926–931. October 2018. doi:10.1093/ijnp/pyy047. PMID 29850881. 
  8. ↑ Halberstadt, Adam L.; Chatha, Muhammad; Klein, Adam K.; Wallach, Jason; Brandt, Simon D. (May 2020). "Correlation between the potency of hallucinogens in the mouse head-twitch response assay and their behavioral and subjective effects in other species". Neuropharmacology 167. doi:10.1016/j.neuropharm.2019.107933. PMID 31917152. PMC 9191653. http://usdbiology.com/cliff/Courses/Advanced%20Seminars%20in%20Neuroendocrinology/Serotonergic%20Psychedelics%2020/Halberstadt%2020%20Neuropharm%20potency%20of%20hallucinogens%20%20head-twitch.pdf. "Table 4 Human potency data for selected hallucinogens. [...]". 
  9. ↑ Ballentine, Galen; Friedman, Samuel Freesun; Bzdok, Danilo (March 2022). "Trips and neurotransmitters: Discovering principled patterns across 6850 hallucinogenic experiences". Sci Adv 8 (11). doi:10.1126/sciadv.abl6989. PMID 35294242. Bibcode: 2022SciA....8L6989B. 
  10. ↑ "The use patterns of novel psychedelics: experiential fingerprints of substituted phenethylamines, tryptamines and lysergamides". Psychopharmacology (Berl) 239 (6): 1783–1796. June 2022. doi:10.1007/s00213-022-06142-4. PMID 35487983. 
  11. ↑ "Biochemistry and pharmacology of tryptamines and beta-carbolines. A minireview". J Psychoactive Drugs 16 (4): 347–358. 1984. doi:10.1080/02791072.1984.10472305. PMID 6394730. https://bitnest.netfirms.com/external/10.1080/02791072.1984.10472305. 




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