6-APDB

6-(2-Aminopropyl)-2,3-dihydrobenzofuran (6-APDB, 4-Desoxy-MDA, EMA-3) is a stimulant and entactogen drug of the phenethylamine and amphetamine classes.[1] It is an analogue of MDA where the heterocyclic 4-position oxygen from the 3,4-methylenedioxy ring has been replaced with a methylene bridge.[1] 5-APDB (3-Desoxy-MDA) is an analogue of 6-APDB where the 3-position oxygen has been replaced with a methylene instead.[1] 6-APDB, along with 5-APDB, was first synthesized by David E. Nichols in the early 1990s while investigating non-neurotoxic MDMA analogues.[1]

6-APDB
Clinical data
Pregnancy
category
  •  ?
Routes of
administration
Oral
ATC code
  • none
Legal status
Legal status
Identifiers
IUPAC name
  • 1-(2,3-dihydro-1-benzofuran-6-yl)propan-2-amine
CAS Number
PubChem CID
ChemSpider
UNII
ChEMBL
CompTox Dashboard (EPA)
Chemical and physical data
FormulaC11H15NO
Molar mass177.247 g·mol−1
3D model (JSmol)
SMILES
  • O2c1cc(ccc1CC2)CC(N)C
InChI
  • InChI=1S/C11H15NO/c1-8(12)6-9-2-3-10-4-5-13-11(10)7-9/h2-3,7-8H,4-6,12H2,1H3 Y
  • Key:VRNGXHJGMCJRSQ-UHFFFAOYSA-N Y
 NY (what is this?)  (verify)

In animal studies, 6-APDB fully substitutes for MBDB and MMAI but not for amphetamine or LSD.[1] In vitro, 6-APDB has been shown to inhibit the reuptake of serotonin, dopamine, and norepinephrine with IC50 values of 322 nM, 1,997 nM, and 980 nM, respectively.[1] These values are very similar to those of MDA, but with those for the catecholamines slightly lower in comparison, perhaps more similarly to MDMA.[1] In contrast, 5-APDB is highly selective for serotonin.[1] Though 6-APDB does not substitute for amphetamine in rats at the doses used in referenced study, based on its in vitro profile it can be suggested that it may have amphetamine-like effects at higher doses.

The unsaturated benzofuran derivative 6-APB, or 6-(2-aminopropyl)benzofuran is also known, but the difference in pharmacological effects between 6-APB and 6-APDB is unclear.

6-APDB is a class B drug in the UK since June 10, 2013. It is banned by a blanket law on benzofurans and related compounds.[2]

References

  1. Monte AP, Marona-Lewicka D, Cozzi NV, Nichols DE (November 1993). "Synthesis and pharmacological examination of benzofuran, indan, and tetralin analogues of 3,4-(methylenedioxy)amphetamine". Journal of Medicinal Chemistry. 36 (23): 3700–6. doi:10.1021/jm00075a027. PMID 8246240.
  2. UK Home Office (2014-03-05). "The Misuse of Drugs Act 1971 (Ketamine etc.) (Amendment) Order 2014". UK Government. Retrieved 2014-03-11.
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