2,5-Dimethoxy-4-butylamphetamine

2,5-Dimethoxy-4-butylamphetamine (DOBU) is a lesser-known psychedelic drug and a substituted Amphetamine. DOBU was first synthesized by Alexander Shulgin. In his book PiHKAL (Phenethylamines i Have Known And Loved), only low dosages of 2–3 mg were tested, with the duration simply listed as "very long". DOBU produces paresthesia and difficulty sleeping, but with few other effects. Compared to shorter chain homologues such as DOM, DOET and DOPR which are all potent hallucinogens, DOBU has an even stronger 5-HT2 binding affinity but fails to substitute for hallucinogens in animals or produce hallucinogenic effects in humans, suggesting it has low efficacy and is thus an antagonist or weak partial agonist at the 5-HT2A receptor.[1]

2,5-Dimethoxy-4-butylamphetamine
Names
IUPAC name
2-(4-Butyl-2,5-dimethoxy-phenyl)-1-methyl-ethylamine
Other names
2,5-Dimethoxy-4-butyl-amphetamine
2,5-Dimethoxy-4-butyl-1-ethyl-(alpha-methyl)amine
Identifiers
3D model (JSmol)
ChEMBL
ChemSpider
UNII
Properties
C15H25NO2
Molar mass 251.37 g/mol
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Infobox references

Isomers

Alternative isomers of DOBU can also be produced, where the 4-(n-butyl) group of DOBU is replaced with any of the three other butyl isomers, the iso-butyl, sec-butyl and tert-butyl compounds being called DOIB, DOSB and DOTB respectively. All are significantly less potent than DOBU, with DOIB being active at around 10–15 mg, and DOSB at 25–30 mg, and both being primarily stimulant in action with little or no psychedelic effects. The most highly branched isomer DOTB was completely inactive in both animal and human trials.

DOIB, DOSB & DOTB
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See also
  • 2,5-Dimethoxy-4-Substituted Amphetamines

References
  1. Seggel MR, Yousif MY, Lyon RA, Titeler M, Roth BL, Suba EA, Glennon RA (March 1990). "A structure-affinity study of the binding of 4-substituted analogues of 1-(2,5-dimethoxyphenyl)-2-aminopropane at 5-HT2 serotonin receptors". Journal of Medicinal Chemistry. 33 (3): 1032–6. doi:10.1021/jm00165a023. PMID 2308135.
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