Civil Rights
Movements, leaders, victories and the continuing fight for equality.
Explore the people, places, events, achievements, struggles and stories that shaped our journey.
Movements, leaders, victories and the continuing fight for equality.
Innovation, patents, science, technology and world-changing contributions.
Pioneers, champions, Negro Leagues, records, activism and excellence.
Meet the people whose lives, choices and achievements shaped the journey.
Black towns, communities, institutions and places where history happened.
Moments that changed communities, movements, institutions and the nation.
Wilmington, North Carolina once had a thriving Black middle class and an elected interracial government. In 1898 white supremacists used violence to overthrow that government, kill Black residents and drive many others from the city.
MORE →Reflects the personal views, recollections, and perspective of the author, Mike Davis.
This is a personal recollection on the Move fire on May 13, 1985
Indazolethylamines, or indazolylethylamines, are a group of indazole derivatives closely related to the tryptamines (indolylethylamines). Examples include the simple indazolethylamines AL-34662 and O-methyl-AL-34662 and the cyclized indazolethylamines AL-38022A, VU6067416, and YM-348. These indazolethylamines are known to act as serotonin 5-HT2 receptor agonists. Some of them, such as O-methyl-AL-34662 and AL-38022A, have been shown to produce psychedelic-like effects in animals similarly to tryptamines.[1][2][3][4][5][6][7][8]
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Indazolethylamines, or indazolylethylamines, are a group of indazole derivatives closely related to the tryptamines (indolylethylamines). Examples include the simple indazolethylamines AL-34662 and O-methyl-AL-34662 and the cyclized indazolethylamines AL-38022A, VU6067416, and YM-348. These indazolethylamines are known to act as serotonin 5-HT2 receptor agonists. Some of them, such as O-methyl-AL-34662 and AL-38022A, have been shown to produce psychedelic-like effects in animals similarly to tryptamines.
AL-34662 is an indazolethylamine derivative drug that is being developed for the treatment of glaucoma. It acts as a selective serotonin 5-HT2 receptor agonist, including of the 5-HT2A, 5-HT2B, and 5-HT2C receptors (affinity (IC50Tooltip half-maximal inhibitory concentration) = 14.5, 8.1, and 3.0 nM, respectively). The serotonin 5-HT2A receptor is the same target as that of psychedelic drugs like psilocin. Unlike these drugs however, AL-34662 was designed specifically as a peripherally selective drug, which does not cross the blood–brain barrier. This means that AL-34662 can exploit a useful side effect of the hallucinogenic 5-HT2A receptor agonists, namely reduction in intra-ocular pressure and hence relief from the symptoms of glaucoma, but without causing the psychedelic effects that make centrally active serotonin 5-HT2A receptor agonists unsuitable for clinical use. In animal studies, AL-34662 has been shown to be potent and effective in the treatment of symptoms of glaucoma, with minimal side effects. Peripherally acting 5-HT2A agonists have been a rich field of research in recent years, with potential glaucoma treatments being the main proposed application for serotonin 5-HT2A receptor agonists at present, as centrally acting agonists for this receptor tend to be hallucinogenic and thus their medical usefulness is currently limited to the treatment of psychiatric disorders. While many novel, potent, and selective serotonin 5-HT2A receptor agonists have been developed for this application, retaining peripheral selectivity can be a problem, and several of the more lipophilic compounds closely related to AL-34662 such as those shown below, did cross the blood–brain barrier and produced hallucinogen-appropriate responding in animals.
VU6067416 is an indazolethylamine and tetrahydropyridinylindazole derivative which acts as an agonist for the 5-HT2 family of serotonin receptors. It is a potent full agonist at 5-HT2B, and has slightly lower affinity and partial agonist effects at 5-HT2A and 5-HT2C, though some related compounds have improved selectivity for 5-HT2A.
O-Methyl-AL-34662, also known as indazole-5-MeO-AMT, is a serotonin receptor agonist and putative serotonergic psychedelic of the indazolethylamine family related to the psychedelic tryptamine 5-MeO-AMT. It is an analogue of 5-MeO-AMT in which the indole ring has been replaced with an indazole ring and the active enantiomer has been purified. The drug is a potent agonist of the serotonin 5-HT2 receptors, including of the serotonin 5-HT2A, 5-HT2B, and 5-HT2C receptors. It is a partial to full agonist of the serotonin 5-HT2A receptor and a full agonist of the serotonin 5-HT2C receptor. Both O-methyl-AL-34662 and 5-MeO-AMT showed around 10-fold lower potency as agonists of the serotonin 5-HT2A receptor compared to the serotonin 5-HT2B and 5-HT2C receptors. The drug has roughly the same activational potencies and efficacies at the serotonin 5-HT2A, 5-HT2B, and 5-HT2C receptors as 5-MeO-AMT. It potently induces the head-twitch response, a behavioral proxy of psychedelic effects, in mice, and hence may have hallucinogenic effects in humans. Its effective dose for induction of the head-twitch response was 0.16 mg/kg, which was about the same as that of (R)-DOI (0.13 mg/kg) and was about 6-fold more potent than 5-MeO-AMT (1.0 mg/kg). O-Methyl-AL-34662 was first described in the scientific literature by Jesse May and colleagues by 2006. In contrast to the case of O-methyl-AL-34662, the corresponding "flipped" indazole analogue of 5-MeO-DMT has profoundly reduced potency as a serotonin 5-HT2A receptor agonist relative to 5-MeO-DMT (~1,250-fold lower activational potency).
Before the 1921 destruction of Tulsa’s Greenwood District, Black residents had created a remarkable center of business and community life. The district included stores, professional offices, entertainment venues and homes owned by Black citizens. Understanding Greenwood means learning what was built—not only what was burned.
MORE →Madam C.J. Walker