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| Formula | C25H39NO4S |
| Molar mass | 449.65 g·mol−1 |
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O-2113 is a drug that is a classical cannabinoid derivative, [1] which acts as a potent agonist for cannabinoid receptors, producing sedation, hypothermia and analgesia in animal studies. [2]
Cannabinol (CBN) is a non-psychoactive cannabinoid found in trace amounts from Cannabis. CBN is mostly found in cannabis that is aged and stored, and is derived from the plant's main psychoactive chemical, tetrahydrocannabinol (THC).
Tetrahydrocannabivarin is a homologue of tetrahydrocannabinol (THC) having a propyl (3-carbon) side chain instead of a pentyl (5-carbon) group on the molecule, which makes it produce very different effects from THC.
Cannabigerol (CBG) is one of more than 120 identified cannabinoid compounds found in the plant genus Cannabis. Cannabigerol is the decarboxylated form of cannabigerolic acid, the parent molecule from which other cannabinoids are synthesized. Cannabigerol is a minor constituent of cannabis. During plant growth, most of the cannabigerol is converted into other cannabinoids, primarily tetrahydrocannabinol (THC) or cannabidiol (CBD), leaving about 1% cannabigerol in the plant.
Cannabinoid receptor type 1 (CB1), also known as cannabinoid receptor 1, is a G protein-coupled cannabinoid receptor that in humans is encoded by the CNR1 gene. The human CB1 receptor is expressed in the peripheral nervous system and central nervous system. It is activated by: endocannabinoids, a group of retrograde neurotransmitters that include anandamide and 2-arachidonoylglycerol (2-AG); plant phytocannabinoids, such as the compound THC which is an active ingredient of the psychoactive drug cannabis; and, synthetic analogs of THC. CB1 is antagonized by the phytocannabinoid tetrahydrocannabivarin (THCV).
The cannabinoid receptor type 2, abbreviated as CB2, is a G protein-coupled receptor from the cannabinoid receptor family that in humans is encoded by the CNR2 gene. It is closely related to the cannabinoid receptor type 1 (CB1), which is largely responsible for the efficacy of endocannabinoid-mediated presynaptic-inhibition, the psychoactive properties of tetrahydrocannabinol (THC), the active agent in cannabis, and other phytocannabinoids (plant cannabinoids). The principal endogenous ligand for the CB2 receptor is 2-Arachidonoylglycerol (2-AG).
Δ9-Tetrahydrocannabutol (tetrahydrocannabinol-C4, THC-C4, Δ9-THCB, (C4)-Δ9-THC, butyl-THC) is a homologue of tetrahydrocannabinol (THC), the active component of cannabis. They are only different by the pentyl side chain being replaced by a butyl side chain. Δ9-THCB, showed an affinity for the human CB1 (Ki = 15 nM) and CB2 receptors (Ki = 51 nM) comparable to that of Δ9-THC. The formalin test in vivo was performed on Δ9-THCB in order to reveal possible analgesic and anti-inflammatory properties. The tetrad test in mice showed a partial agonistic activity of Δ9-THCB toward the CB1 receptor. The propyl analog, THCV, is a cannabinoid receptor type 1 and cannabinoid receptor type 2 antagonist, while THC is a CB1 agonist. THCB has rarely been isolated from cannabis samples, but appears to be less commonly present than THC or THCV. It is metabolised in a similar manner to THC. Similarly to THC, it has 7 double bond isomers and 30 stereoisomers. The Δ8 isomer is known as a synthetic cannabinoid under the code name JWH-130, and the ring-opened analogue cannibidibutol is also known.
O-1057 is an analgesic cannabinoid derivative created by Organix Inc., Newburyport, Massachusetts, for use in scientific research. Unlike most cannabinoids discovered to date, it is water-soluble, which gives it considerable advantages over many related cannabinoids. It has moderate affinity for both CB1 and CB2 receptors, with Ki values of 8.36 nM at CB1 and 7.95 nM at CB2
JWH-030 is a research chemical which is a cannabinoid receptor agonist. It has analgesic effects and is used in scientific research. It is a partial agonist at CB1 receptors, with a Ki of 87 nM, making it roughly half the potency of THC. It was discovered and named after John W. Huffman.
L-759,633 is an analgesic drug that is a cannabinoid agonist. It is a fairly selective agonist for the CB2 receptor, with selectivity of 163x for CB2 over CB1.
L-759,656 is an analgesic drug that is a cannabinoid agonist. It is a highly selective agonist for the CB2 receptor, with selectivity of 414x for CB2 over CB1, although it is still not as selective as newer agents such as HU-308.
LY-320,135 is a drug used in scientific research which acts as a selective antagonist of the cannabinoid receptor CB1. It was developed by Eli Lilly and Company in the 1990s.
AMG-1 (part of the AM cannabinoid series) is an analgesic drug which is a cannabinoid agonist. It is a derivative of Δ8-THC with a rigidified and extended 3-position side chain. AMG-1 is a potent agonist at both CB1 and CB2 with moderate selectivity for CB1, with a Ki of 0.6 nM at CB1 vs 3.1 nM at CB2.
O-823 is a drug which is a cannabinoid derivative that is used in scientific research. It is described as a mixed agonist/antagonist at the cannabinoid receptor CB1, meaning that it acts as an antagonist when co-administered alongside a more potent CB1 agonist, but exhibits weak partial agonist effects when administered by itself.
O-1238 is a drug which is a cannabinoid derivative that is used in scientific research. It is a partial agonist at the cannabinoid receptor CB1, producing a maximal stimulation of 58.3% with a Ki of 8.45nM.
Org 27569 is a drug which acts as a potent and selective negative allosteric modulator of the cannabinoid CB1 receptor. Studies in vitro suggest that it binds to a regulatory site on the CB1 receptor target, causing a conformational change that increases the binding affinity of CB1 agonists such as CP 55,940, while decreasing the binding affinity of CB1 antagonists or inverse agonists such as rimonabant. However while Org 27569 increases the ability of CB1 agonists to bind to the receptor, it decreases their efficacy at stimulating second messenger signalling once bound, and so in practice behaves as an insurmountable antagonist of CB1 receptor function.
Arachidonyl-2'-chloroethylamide (ACEA) is a synthetic agonist of the CB1 (CB1R). ACEA is considered to be a selective cannabinoid agonist as it binds primarily to the CB1R and has low affinity to the CB2 (CB2R) (Ki = 1.4 nM for CB1R; Ki = 3100 nM for CB2R).
O-1269 is a drug that is a diarylpyrazole derivative, related to potent cannabinoid antagonist drugs such as rimonabant and surinabant. However O-1269 and several related drugs were unexpectedly found to act as full or partial agonists at the cannabinoid receptors rather than antagonists, and so produce the usual effects expected of cannabinoid agonists in animal tests, such as sedation and analgesic effects. The N-heptyl homolog O-1270 and the N-propyl homolog O-1399 also act as cannabinoid agonists with similar potency in vivo, despite weaker binding affinity at cannabinoid receptors compared to the pentyl homolog O-1269. Agonist-like and atypical cannabinoid activity has also been observed with a number of related compounds.
O-2050 is a drug that is a classical cannabinoid derivative, which acts as an antagonist for the CB1 receptor. This gives it an advantage in research over many commonly used cannabinoid antagonists, such as rimonabant, which at higher doses act as inverse agonists at CB1 as well as showing off-target effects. However, while O-2050 acts as a silent antagonist in vitro, some tests in vivo have suggested it may show agonist activity under certain circumstances.
AM-6545 is a drug which acts as a peripherally selective silent antagonist for the CB1 receptor, and was developed for the treatment of obesity. Other cannabinoid antagonists such as rimonabant have been marketed for this application, but have subsequently been withdrawn from sale because of centrally mediated side effects such as depression and nausea. Because AM-6545 does not cross the blood–brain barrier to any significant extent, it does not produce these kinds of side effects, but has still been shown to effectively reduce appetite and food consumption in animal studies.
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