Cannabidiol-dimethylheptyl (CBD-DMH or DMH-CBD) is a synthetic
homolog
In biology, homology is similarity due to shared ancestry between a pair of structures or genes in different taxa. A common example of homologous structures is the forelimbs of vertebrates, where the wings of bats and birds, the arms of prima ...
ue of
cannabidiol
Cannabidiol (CBD) is a phytocannabinoid discovered in 1940. It is one of 113 identified cannabinoids in cannabis plants, along with tetrahydrocannabinol (THC), and accounts for up to 40% of the plant's extract. , clinical research on CBD in ...
where the pentyl chain has been replaced by a dimethylheptyl chain.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
Anandamide (ANA), also known as ''N''-arachidonoylethanolamine (AEA), is a fatty acid neurotransmitter. Anandamide was the first endocannabinoid to be discovered: it participates in the body's endocannabinoid system by binding to cannabinoid r ...
reuptake inhibitor
Reuptake is the reabsorption of a neurotransmitter by a neurotransmitter transporter located along the plasma membrane of an axon terminal (i.e., the pre-synaptic neuron at a synapse) or glial cell after it has performed its function of transmi ...
, but is more potent than cannabidiol as an
anticonvulsant and has around the same potency as an
antiinflammatory
Anti-inflammatory is the property of a substance or treatment that reduces inflammation or swelling. Anti-inflammatory drugs, also called anti-inflammatories, make up about half of analgesics. These drugs remedy pain by reducing inflammation as ...
. 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 CB
1 and 211nM at CB
2, and produces typical cannabinoid effects in animal studies, as does its 7-OH derivative.
![7-OH-(+)-CBD-DMH_structure](https://upload.wikimedia.org/wikipedia/commons/7/73/7-OH-%28%2B%29-CBD-DMH_structure.png)
Another closely analogous compound has also been described, with the double bond in the
cyclohexene
Cyclohexene is a hydrocarbon with the formula C6H10. This cycloalkene is a colorless liquid with a sharp smell. It is an intermediate in various industrial processes. Cyclohexene is not very stable upon long term storage with exposure to light a ...
ring shifted to between the 1,6-positions rather than the 2,3-positions (i.e. analogous to synthetic
THC
Tetrahydrocannabinol (THC) 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' ...
analogues such as
parahexyl
Parahexyl (Synhexyl, n-hexyl-Δ3-THC, (C6)-Δ6a(10a)-THC) is a synthetic homologue of THC which was invented in 1941 during attempts to elucidate the structure of Δ9-THC, one of the active components of cannabis.
Parahexyl is similar in both st ...
), the isopropenyl group saturated to isopropyl, and a 1,2-dimethylheptyl side chain. It is synthesized by
Birch reduction
The Birch reduction is an organic reaction that is used to convert arenes to cyclohexadienes. The reaction is named after the Australian chemist Arthur Birch and involves the organic reduction of aromatic rings in an amine solvent (traditionally ...
from the 1,2-dimethylheptyl analogue of
cannabidiol
Cannabidiol (CBD) is a phytocannabinoid discovered in 1940. It is one of 113 identified cannabinoids in cannabis plants, along with tetrahydrocannabinol (THC), and accounts for up to 40% of the plant's extract. , clinical research on CBD in ...
. This compound also produces potent cannabinoid-like effects in animals, but has three chiral centers and is composed of a mixture of eight
stereoisomer
In stereochemistry, stereoisomerism, or spatial isomerism, is a form of isomerism in which molecules have the same molecular formula and sequence of bonded atoms (constitution), but differ in the three-dimensional orientations of their atoms in ...
s, which have not been studied individually, so it is not known which stereoisomers are active.
See also
*
7-OH-CBD
*
Abnormal cannabidiol
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 ...
*
Cannabinoid receptor
Cannabinoid receptors, located throughout the body, are part of the endocannabinoid system a class of cell membrane receptors in the G protein-coupled receptor superfamily. As is typical of G protein-coupled receptors, the cannabinoid recep ...
s
*
Cannabidiphorol
*
HU-211
*
HUF-101
*
KLS-13019
*
O-1656
*
O-1871
O-1871 is a potent cannabinoid agonist which was invented by Billy R Martin and Raj K Razdan at Organix Inc in 2002. It has a CB1 receptor affinity of 2.0nM and a CB2 receptor affinity of 0.3nM. Structurally, O-1871 is a cyclohexylphenol deriv ...
*
O-1918
O-1918 is a synthetic compound related to cannabidiol, which is an antagonist at two former orphan receptors GPR18 and GPR55, that appear to be related to the cannabinoid receptors. O-1918 is used in the study of these receptors, which have been ...
*
NESS-040C5
NESS-040C5 is a potent cannabinoid agonist which was developed for the treatment of glaucoma
Glaucoma is a group of eye diseases that result in damage to the optic nerve (or retina) and cause vision loss. The most common type is open-angle ...
*
Tetrahydrocannabiphorol
Tetrahydrocannabiphorol (THCP) is a potent phytocannabinoid, a CB1 and CB2 agonist which was known as a synthetic homologue of THC, but for the first time in 2019 was isolated as a natural product in trace amounts from ''Cannabis sativa''. ...
References
{{Cannabinoids
Cannabinoids
2,6-Dihydroxybiphenyls
Cyclohexenes