Names | |
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IUPAC name 1-(4-Bromofuro[2,3-f] [1]benzofuran-8-yl)propan-2-amine [1] | |
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Properties | |
C 13H 12BrNO 2 | |
Molar mass | 294.144 g mol−1 |
log P | 2.519 |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). |
Bromo-DragonFLY (or 3C-Bromo-Dragonfly, DOB-Dragonfly [2] ) is a substance related to the phenethylamine family. It acts as a potent full agonist for the 5-HT2A receptor. [3]
Bromo-DragonFLY was first synthesized in 1998. [3] As with the earlier and less potent dihydrofuran series of compounds nicknamed FLY, Bromo-DragonFLY was named after its superficial structural resemblance to a dragonfly.[ citation needed ]
Bromo-DragonFLY has very high affinity at the 5-HT2A (Ki 0.04 nM) and 5-HT2C receptors (Ki 0.02 nM), along with moderate affinity for 5-HT2B (Ki 0.19 nM). [3] [4] Bromo-DragonFLY is also a MAO-A inhibitor, [5] increasing its risks.
The first synthesis of racemic Bromo-DragonFLY was reported by David E. Nichols in 1998 and was an expansion upon earlier research into the tetrahydrobenzodifuran analogue of DOB. [3] The 1998 synthesis of racemic Bromo-DragonFLY starts from hydroquinone, which is dialkylated with 1-bromo-2-chloroethane, brominated, and treated with n-butyllithium to yield the tetrahydrobenzodifuran ring system. After formylation of the ring system, the nitropropene derivative was obtained by condensation with nitroethane under ammonium acetate catalysis. The nitropropene derivative was then reduced with lithium aluminium hydride to yield the amine intermediate, which was protected with trifluoroacetic anhydride. Following para-bromination with elemental bromine and oxidation of the tetrahydrobenzodifuran ring system with DDQ, the trifluoroacetyl protecting group of the amine was removed to give Bromo-DragonFLY as a racemic mixture of the R and S enantiomers.
In 2001, David E. Nichols reported an enantiospecific synthesis of Bromo-DragonFLY which allowed the individual R and S enantiomers to be studied. [6] Further research determined that (R)-(-)-Bromo-DragonFLY possessed greater binding affinity at the 5-HT2A and 5-HT2C receptors than (S)-(-)-Bromo-DragonFLY. To synthesize the more active R enantiomer, a derivative of D-alanine was reacted with 2,3,6,7-tetrahydrobenzodifuran in a Friedel–Crafts acylation, yielding an intermediate containing a β-keto moiety which was removed by treatment with triethylsilane in trifluoroacetic acid. After para-bromination and oxidation of the ring system with DDQ, the amine was deprotected yielding (R)-(-)-Bromo-DragonFLY.
Data on toxicological significance and dosage of Bromo-DragonFLY remains elusive due to lack of human consumption, however commonly reported recreational dose of this substance is in the range of 500-1000μg. [7] However, a death has been reported at approximately 700μg Bromo-DragonFLY. [7]
The toxicity of Bromo-DragonFLY appears to be fairly high for humans, with reports of at least five deaths believed to have resulted from Bromo-DragonFLY in Norway, [8] Sweden, [9] [10] Denmark, [11] [12] Finland [13] and the United States. Laboratory testing has confirmed that in October 2009, a batch of Bromo-Dragonfly was distributed, mislabeled as the related compound 2C-B-FLY, which is around 20x less potent than BDF by weight. This mistake is believed to have contributed to several lethal overdoses and additional hospitalizations. The batch implicated in these deaths also contained significant synthesis impurities, which may have contributed to the toxicity. [14]
Vasoconstrictive action resulting from severe overdose of Bromo-DragonFLY is known to have caused tissue necrosis of the extremities in at least one case. In September 2007, a 35-year-old Swedish male required amputation of the front part of his feet and several fingers on one hand after taking a massive (but unknown) overdose; reportedly, the compound acted as a long-acting efficacious vasoconstrictor, leading to necrosis and gangrene which became apparent several weeks after the overdose occurred. Treatment was of limited efficacy in this case, although tolazoline is reportedly an effective treatment where available. [15] [16]
Overdose-associated disturbing experiences and health problems have been described. One case in 2008 in England involved inhalation of vomit, causing nearly fatal asphyxia. [17] Seizures have also been reported. [18]
On October 3, 2009, a 22-year-old male from Copenhagen died after ingesting Bromo-DragonFLY. His friend described the trip saying, "It was like being dragged to hell and back again. Many times. It is the most evil [thing] I've ever tried. It lasted an eternity." [19]
On May 7, 2011, in the United States, two young adults died after overdosing on Bromo-DragonFLY, which they thought was 2C-E, and several others were hospitalized during the same incident. Because they took a dosage appropriate for 2C-E, those who took the drug received, in some cases, 100x the normal dose. Both deaths followed seizures, vomiting blood, and terrifying hallucinations. [20]
Bromo-DragonFLY is unscheduled at federal level in the United States but could be prosecuted if it is sold for human consumption, Bromo Dragonfly is listed as a Schedule I substance in Oklahoma. [21]
As of Oct 12, 2016, Bromo-DragonFLY is listed in Schedule III of the Canadian Controlled Drugs and Substances Act: "2C-phenethylamines and their salts, derivatives, isomers and salts of derivatives and isomers", a broad definition which corresponds to anything with a 2,5-dimethoxyphenethylamine core, including (but not limited to) the 2C family (including e.g. βk-2C-B), the DOx chemical class, the TMA family, Aleph aka DOT, NBOMe, the 25x-NBx series, and of course, Bromo-DragonFLY itself (see this article).
Bromo-DragonFLY is widely reported by the media as being a Class A drug. [22] However, as of 2014, it remains unclear to what extent it is covered by the UK phenylethylamine catch-all clause, with commentators noting both the structural similarities [23] and differences [24] [ unreliable source? ] to the phenylethylamine class. If the prosecution could demonstrate structural similarity in court, it would be considered a Class A substance [25] but as a benzodifuran it is significantly different to this class. It is not explicitly named in the misuse of drugs act. [26] It would be covered by the UK Psychoactive Substances Act 2016 but only if it is sold or traded for human consumption.
Sveriges riksdag added Bromo-Dragonfly to schedule IV ("substances, plant materials and fungi that hasn't any or without nothing medical use") as narcotics in Sweden as of Jan 3, 2008, published by Medical Products Agency in their regulation LVFS 2007:14 listed as Bromo-Dragonfly, brombensodifuranyl-isopropylamin. [27] Bromo-DragonFLY was first classified as "health hazard" by Sveriges riksdags health ministry ''Statens folkhälsoinstitut'' [ sv ] under the act ''Lagen om förbud mot vissa hälsofarliga varor'' [ sv ] (translated Act on the Prohibition of Certain Goods Dangerous to Health) as of Jul 15, 2007, in their regulation SFS 2007:600 listed as brombensodifuranylisopropylamin (Bromo-Dragonfly), making it illegal to sell, purchase, buy, retail or possess. [28]
On December 3, 2007, the drug was banned in Denmark. [29] The substance has been declared illegal by health minister Jakob Axel Nielsen, following recommendations from the Danish Health Ministry. It is currently classified as a dangerous narcotic and therefore its possession, manufacture, importation, supply or usage is strictly prohibited. Anyone involved in such activities can face legal action. [30]
Bromo-DragonFLY is currently on the Norwegian narcotics list. [31] [32]
Currently, Bromo-DragonFLY is an uncontrolled substance in Poland.[ citation needed ]
The chemical compound has been added as an illegal substance under the Law 143/2000 on February 10, 2010. [33]
As of 9 September 2011, Bromo-DragonFLY was added to Schedule 2 of the Queensland Drugs Misuse Regulation 1987. [34]
Nationally, the drug is listed under Schedule 9 (Prohibited) of the Poisons Standard. Accordingly, the drug is prohibited in all states and territories. [35]
As of 12 March 2012, Bromo-DragonFLY is an illegal designer drug. [36]
{{cite web}}
: CS1 maint: archived copy as title (link)2C-B (4-bromo-2,5-dimethoxyphenethylamine), also known as Nexus, is a synthetic psychedelic drug of the 2C family, mainly used as a recreational drug. It was first synthesized by Alexander Shulgin in 1974 for use in psychotherapy. To date, there is limited scientific information regarding the drug's pharmacokinetics and pharmacological effects in humans. The existing studies primarily classify 2C-B as a stimulant and hallucinogen, and less commonly an entactogen and empathogen.
Dimethoxybromoamphetamine (DOB), also known as brolamfetamine and bromo-DMA, is a psychedelic drug and substituted amphetamine of the phenethylamine class of compounds. DOB was first synthesized by Alexander Shulgin in 1967. Its synthesis and effects are documented in Shulgin's book PiHKAL: A Chemical Love Story.
2C-B-FLY is a psychedelic phenethylamine and designer drug of the 2C family. It was first synthesized in 1996 by Aaron Monte, Professor of Chemistry at UW-La Crosse.
TCB-2 is a hallucinogen discovered in 2006 by Thomas McLean working in the lab of David Nichols at Purdue University. 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.
2CBCB-NBOMe (NBOMe-TCB-2) is a compound indirectly derived from the phenethylamine series of hallucinogens, which was discovered in 2007 at Purdue University as part of the ongoing research program of the team led by David Nichols focusing on the mapping of the specific amino acid residues responsible for ligand binding to the 5HT2A receptor. 2CBCB-NBOMe acts as a potent and selective agonist for the 5-HT2A and 5-HT2C receptors, with a Ki of 0.27 nM at the human 5-HT2A receptor, a similar potency to other agonists such as TCB-2, NBOMe-2C-I and Bromo-DragonFLY.
2CBFly-NBOMe is a compound indirectly derived from the phenethylamine hallucinogen 2C-B, and related to benzodifurans like 2C-B-FLY and N-benzylphenethylamines like 25I-NBOMe. It was discovered in 2002, and further researched by Ralf Heim at the Free University of Berlin, and subsequently investigated in more detail by a team at Purdue University led by David E. Nichols. It acts as a potent partial agonist for the 5-HT2A serotonin receptor subtype.
TFMFly is a compound related to psychedelic phenethylamines such as 2C-B-FLY and 2C-TFM. It was first reported in 2005 by a team at Purdue University led by David Nichols. It acts as a potent agonist at the 5HT2A serotonin receptor subtype, and is a chiral compound with the more active (R) enantiomer having a Ki of 0.12 nM at the human 5-HT2A receptor. While the fully aromatic benzodifurans such as Bromo-DragonFLY generally have higher binding affinity than saturated compounds like 2C-B-FLY, the saturated compounds have higher efficacy as agonists.
25B-NBOMe is a derivative of the phenethylamine psychedelic 2C-B, discovered in 2004 by Ralf Heim at the Free University of Berlin. It acts as a potent full agonist for the 5HT2A receptor. Duration of effects lasts about 3–10 hours, although the parent compound is rapidly cleared from the blood when used in the radiolabeled form in tracer doses. Recently, Custodio et al. (2019) evaluated the potential involvement of dysregulated dopaminergic system, neuroadaptation, and brain wave changes which may contribute to the rewarding and reinforcing properties of 25B-NBOMe in rodents.
2,5-Dimethoxy-4-fluoroamphetamine (DOF) is a psychedelic drug of the phenethylamine and amphetamine classes. Alexander Shulgin briefly describes DOF in his book PiHKAL:
Animal studies that have compared DOF to the highly potent DOI and DOB imply that the human activity will be some four to six times less than these two heavier halide analogues.
2CB-Ind is a conformationally-restricted derivative of the phenethylamine hallucinogen 2C-B, discovered in 1974 by Alexander Shulgin. It acts as a moderately potent and selective agonist for the 5-HT2A and 5-HT2C receptors, but unlike the corresponding benzocyclobutene derivative TCB-2 which is considerably more potent than the parent compound 2C-B, 2CB-Ind is several times weaker, with racemic 2CB-Ind having a Ki of 47nM at the human 5-HT2A receptor, only slightly more potent than the mescaline analogue (R)-jimscaline.
25I-NBF is a derivative of the phenethylamine hallucinogen 2C-I, which acts as a highly potent partial agonist for the human 5-HT2A receptor, with bias towards the β-arrestin 2 coupled signalling pathway. It has been studied in its 11C radiolabelled form as a potential ligand for mapping the distribution of 5-HT2A receptors in the brain, using positron emission tomography (PET).
25C-NBOMe is a psychedelic drug and derivative of the psychedelic phenethylamine 2C-C. 25C-NBOMe appeared on online vendor sites in 2010 but was not reported in the literature until 2011. It acts as a potent agonist of the 5-HT2A receptor, and has been studied in its 11C radiolabelled form as a potential ligand for mapping the distribution of 5-HT2A receptors in the brain, using positron emission tomography (PET). Multiple deaths have occurred from usage of 25C-NBOMe due to the ease of accidental overdose. The long-term toxic effects of the drug have not been researched.
25P-NBOMe is a derivative of the phenethylamine 2C-P. It acts in a similar manner to related compounds such as 25I-NBOMe, which are potent agonists at the 5-HT2A receptor. 25P-NBOMe has been sold as a drug and produces similar effects in humans to related compounds such as 25I-NBOMe and 25C-NBOMe.
25B-NBOH is a derivative of the phenethylamine derived hallucinogen 2C-B which has been sold as a designer drug. It acts as a potent serotonin receptor agonist with similar affinity to the better-known compound 25B-NBOMe at 5-HT2A and 5-HT2C receptors with pKis values of 8.3 and 9.4, respectively.
NBOMe-mescaline or mescaline-NBOMe is a synthetic substituted phenethylamine. It is a partial agonist of serotonin receptors with a 5-HT2A pKi originally reported as 7.3, though more modern techniques assayed it as 140nM at 5-HT2A and 640nM at 5-HT2C, making it one of the least potent compounds among the N-benzyl phenethylamines.
2C-B-BUTTERFLY is a conformationally-restricted derivative of the phenethylamine hallucinogen 2C-B, which was discovered in 1999 by Michael S. Whiteside and Aaron Monte. It is a ring-expanded homologue of the better known compound 2C-B-FLY, and has similar properties as an agonist for serotonin receptors, but with more selectivity for 5-HT2C over 5-HT2A.
25B-NBF is a derivative of the phenethylamine hallucinogen 2C-B, which acts as a highly potent partial agonist for the human 5-HT2A receptor.
DOB-FLY is a recreational designer drug with psychedelic effects. It can be regarded as the alpha-methyl derivative of 2C-B-FLY or the partially saturated counterpart of bromo-dragonfly. Unlike bromo-dragonfly, DOB-FLY is only slightly more potent than DOB itself, with an active dose in humans of around 1 mg.
2C-B-DRAGONFLY (2C-B-DFLY) is a recreational designer drug with psychedelic effects. It can be regarded as the fully aromatic derivative of 2C-B-FLY. 2C-B-DRAGONFLY is stronger than 2C-B or 2C-B-FLY with around 2-3x the potency of 2C-B in animal studies, demonstrating the importance of the fully aromatic benzodifuran ring system for optimum receptor binding at 5-HT2A, but it is still considerably less potent than its alpha-methyl derivative Bromo-DragonFLY.
DOB-2-DRAGONFLY-5-BUTTERFLY is a drug with an unusual furo[2,3-g]chromene core structure which acts as a 5-HT2A receptor agonist. It was first synthesised by David E. Nichols and colleagues in 2008, and while it is weaker than similar compounds such as Bromo-DragonFLY it is still the most potent among a number of related derivatives.