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| Formula | C21H24O3 |
| Molar mass | 324.420 g·mol−1 |
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HU-345 (cannabinol quinone) is a drug that is able to inhibit aortic ring angiogenesis more potently than its parent compound cannabinol (CBN). [1] [2] It exhibits no psychoactive effects on the body.
HU-345 can be derived through the oxidative degradation of CBN. [3]
Tetrahydrocannabinol (THC) is a cannabinoid found in cannabis. It is the principal psychoactive constituent of cannabis and one of at least 113 total cannabinoids identified on the plant. Although the chemical formula for THC (C21H30O2) describes multiple isomers, the term THC usually refers to the delta-9-THC isomer with chemical name (−)-trans-Δ9-tetrahydrocannabinol. It is a colorless oil.
Cannabinoids are several structural classes of compounds found in the cannabis plant primarily and most animal organisms or as synthetic compounds. The most notable cannabinoid is the phytocannabinoid tetrahydrocannabinol (THC) (delta-9-THC), the primary psychoactive compound in cannabis. Cannabidiol (CBD) is also a major constituent of temperate cannabis plants and a minor constituent in tropical varieties. At least 100 distinct phytocannabinoids have been isolated from cannabis, although only four have been demonstrated to have a biogenetic origin. It was reported in 2020 that phytocannabinoids can be found in other plants such as rhododendron, licorice and liverwort, and earlier in Echinacea.
Cannabinol (CBN) is a mildly psychoactive phytocannabinoid that acts as a low affinity partial agonist at both CB1 and CB2 receptors. This activity at CB1 and CB2 receptors constitutes interaction of CBN with the endocannabinoid system (ECS).
HU-210 is a synthetic cannabinoid that was first synthesized in 1988 from (1R,5S)-myrtenol by a group led by Raphael Mechoulam at the Hebrew University. HU-210 is 100 to 800 times more potent than natural THC from cannabis and has an extended duration of action. HU-210 has a binding affinity of 0.061 nM at CB1 receptors compared to 40.7 nM for Δ9-THC. The binding pose of HU-210 to the CB1 receptor is similar to other synthetic cannabinoids.
11-Hydroxy-Δ9-tetrahydrocannabinol, usually referred to as 11-hydroxy-THC is the main active metabolite of tetrahydrocannabinol (THC), which is formed in the body after Δ9-THC is consumed.
2-Arachidonyl glyceryl ether is a putative endocannabinoid discovered by Lumír Hanuš and colleagues at the Hebrew University of Jerusalem, Israel. It is an ether formed from the alcohol analog of arachidonic acid and glycerol. Its isolation from porcine brain and its structural elucidation and synthesis were described in 2001.
Onternabez (also known as HU-308, HU308, PPP-003, and ARDS-003) is a synthetic cannabinoid that acts as a potent cannabinoid agonist. It is highly selective for the cannabinoid-2 receptor (CB2 receptor) subtype, with a selectivity more than 5,000 times greater for the CB2 receptor than the CB1 receptor. The synthesis and characterization of onternabez took place in the laboratory of Raphael Mechoulam at the Hebrew University of Jerusalem (the HU in HU-308) in the late 1990s. The pinene dimethoxy-DMH-CBD derivative onternabez was identified as a potent peripheral CB2-selective agonist in in vitro and animal studies in 1990 and 1999.
Abnormal cannabidiol (Abn-CBD) is a synthetic regioisomer of cannabidiol, which unlike most other cannabinoids produces vasodilator effects, lowers blood pressure, and induces cell migration, cell proliferation and mitogen-activated protein kinase activation in microglia, but without producing any psychoactive or sedative effects. Abn-CBD can be found as an impurity in synthetic cannabidiol.
Canbisol (Nabidrox) is a synthetic cannabinoid derivative that is the dimethylheptyl homologue of 9-nor-9β-hydroxyhexahydrocannabinol (HHC). It is a potent agonist at both the CB1 and CB2 receptors, with a binding affinity of 0.1 nM at CB1 and 0.2 nM at CB2. It is mainly used in scientific research, in receptor binding studies to determine the structure and function of the cannabinoid receptors, but has been made illegal in some countries due to its possible abuse potential as a cannabinomimetic drug.
HU-331 is a quinone anticarcinogenic drug synthesized from cannabidiol, a cannabinoid in the Cannabis sativa plant. It showed a great efficacy against oncogenic human cells. HU-331 does not cause arrest in cell cycle, cell apoptosis or caspase activation. HU-331 inhibits DNA topoisomerase II even at nanomolar concentrations, but has shown a negligible effect on the action of DNA topoisomerase I. The cannabinoid quinone HU-331 is a very specific inhibitor of topoisomerase II, compared with most known anticancer quinones. One of the main objectives of these studies is the development of a new quinone derived compound that produces anti-neoplastic activity while maintaining low toxicity at therapeutic doses.
HU-320 (7-nor-7-carboxy-CBD-1,1-DMH) is a drug related to cannabidiol, which has strong antiinflammatory and immunosuppressive properties while demonstrating no psychoactive effects.
HU-336 is a strongly antiangiogenic compound, significantly inhibiting angiogenesis at concentrations as low as 300 nM. It inhibits angiogenesis by directly inducing apoptosis of vascular endothelial cells without changing the expression of pro- and antiangiogenic cytokines and their receptors. HU-336 is highly effective against tumor xenografts in nude mice. Although it is technically the oxidized quinone of delta-8 THC, it is entirely non psychoactive.
Cannabinodiol (CBND), also known as cannabidinodiol, cannabinoid that is present in the plant Cannabis sativa at low concentrations. It is the fully aromatized derivative of cannabidiol (CBD) and can occur as a product of the photochemical conversion of cannabinol (CBN).
Cannabidiol-dimethylheptyl (CBD-DMH or DMH-CBD) is a synthetic homologue of cannabidiol where the pentyl chain has been replaced by a dimethylheptyl chain. Several isomers of this compound are known. The most commonly used isomer in research is (−)-CBD-DMH, which has the same stereochemistry as natural cannabidiol, and a 1,1-dimethylheptyl side chain. This compound is not psychoactive and acts primarily as an anandamide reuptake inhibitor, but is more potent than cannabidiol as an anticonvulsant and has around the same potency as an antiinflammatory. Unexpectedly the “unnatural” enantiomer (+)-CBD-DMH, which has reversed stereochemistry from cannabidiol, was found to be a directly acting cannabinoid receptor agonist with a Ki of 17.4nM at CB1 and 211nM at CB2, and produces typical cannabinoid effects in animal studies, as does its 7-OH derivative.
8,9-Dihydrocannabidiol is a synthetic cannabinoid that is closely related to cannabidiol (CBD) itself. that was first synthesized by Alexander R. Todd in 1940 derived from the catalytic hydrogenation of cannabidiol.
Δ-10-Tetrahydrocannabinol is a positional isomer of tetrahydrocannabinol, discovered in the 1980s. Two epimers have been reported in the literature, with the 9-methyl group in either the (R) or (S) conformation; of these, the (R) epimer appears to be the more active isomer as well as the double bond in the 10th position instead of the 9th maintaining about 30 to 40 percent the potency of delta-9-THC. Δ10-THC has rarely been reported as a trace component of natural cannabis, though it is thought to be a degradation product similar to cannabinol rather than being produced by the plant directly. However, it is found more commonly as an impurity in synthetic delta-8-THC produced from cannabidiol and can also be synthesized directly from delta-9-THC.
11-Hydroxy-Δ-8-tetrahydrocannabinol is an active metabolite of Δ8-THC, a psychoactive cannabinoid found in small amounts in cannabis. It is an isomer of 11-OH-Δ9-THC, and is produced via the same metabolic pathway. It was the first cannabinoid metabolite discovered in 1970.
11-Hydroxyhexahydrocannabinol is an active metabolite of tetrahydrocannabinol (THC) and a metabolite of the trace cannabinoid hexahydrocannabinol (HHC).
11-Hydroxycannabinol (11-OH-CBN) is the main active metabolite of cannabinol (CBN), one of the active components of cannabis, and has also been isolated from cannabis itself. It is more potent than CBN itself, acting as an agonist of CB1 with around the same potency as THC, but is a weak antagonist at CB2.
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