Minor phytocannabinoid
UnscheduledCBCONCannabicoumaronone
4-(6,6-dimethyl-10-pentyl-2,7-dioxatricyclo[6.3.1.04,12]dodeca-1(12),3,8,10-tetraen-5-yl)butan-2-one
Aliases.cannabicoumaronone · CBCON · CBCON-C5 · cannabicumaronon
A trace cannabinoid with a benzofuran core, isolated from hashish in 1978, pharmacology unstudied.
Updated on
Level of detail
Identifiers
- Formula
- C₂₁H₂₈O₃
- Molar mass
- 328.40 g·mol⁻¹
- CAS
- -
- PubChem CID
- 625303
- First described
- Décrite en 1978 par Heinz Grote et Gerhard Spiteller, dans le troisième volet de leur série « Neue Cannabinoide » publiée dans la revue Tetrahedron. Les auteurs ont isolé la molécule à partir d'extraits de haschisch et ont établi son squelette benzofuranique en le rattachant à celui de la cannabichromanone. En 2009, l'équipe de Mohamed Radwan et Mahmoud ElSohly, au National Center for Natural Products Research de l'université du Mississippi, a décrit la forme acide apparentée, l'acide (7R)-cannabicoumarononique A, dans une variété de Cannabis sativa à forte teneur en THC.
- Origin
- A very minor constituent of Cannabis sativa resin, originally isolated from hashish extracts. The molecule appears in the so-called "miscellaneous" class of cannabis phytochemical inventories, alongside cannabichromanone and cannabicoumarononic acid A. The quantities obtained in the isolation work were extremely small and there is today no standardised commercial source, nor any widely distributed reference analytical standard.
- InChIKey
- CSSYBWPIBDITMG-UHFFFAOYSA-N
In plain terms
Cannabicoumaronone is a rare cannabis molecule, present in trace amounts in the resin. It was identified in 1978 by two German chemists analysing hashish extracts. Practically nothing is known about its action on the body: no study has measured its effects, and human data are lacking.
Receptors and activity
- CB1Modulator
- CB2Modulator
- Agonist
- Partial agonist
- Antagonist
- Modulator
- Inverse agonist
Hover over a row for the precise value (Ki, EC50…)
Subjective signature
Hover over an axis to read its definition.
- Calm5
- Clarity5
- Sleep5
- Appetite5
- High5
Editorial estimate, not clinical.
Pharmacology
Pharmacologically, cannabicoumaronone remains an unknown. No binding experiment at the CB1 or CB2 receptors has been published, no measurement at TRPV1, GPR55, PPARγ or the serotonergic receptors, no animal model, and human data are entirely lacking. The available literature is exclusively chemical: isolation from hashish extracts, structural elucidation by mass spectrometry and nuclear magnetic resonance, then re-entry of the molecule into modern inventories of minor cannabinoids, where it is classed among the so-called miscellaneous compounds. Structurally, the central ring is aromatic and both oxygens derived from resorcinol are engaged, one in a pyran ring, the other in a furan ring; the molecule therefore no longer possesses the free phenol that governs the affinity of classical cannabinoids for CB1, which suggests a weak interaction, though no experiment has established it. Nor has it been demonstrated that the molecule is a strictly biosynthetic product rather than an oxidation product of the resin. No therapeutic benefit can be attributed to it as knowledge stands.
Key sources.
- PubChem, Cannabicoumaronone, CID 625303 (identifiants, synonymes, sources LOTUS et DSSTox)
- Grote H., Spiteller G., « Neue Cannabinoide III : Die Struktur des Cannabicumaronons und analoger Verbindungen », Tetrahedron, 1978, 34(21), 3207-3213 (isolement à partir d'extraits de haschisch)
- Radwan M.M. et al., « Biologically Active Cannabinoids from High-Potency Cannabis sativa », Journal of Natural Products, 2009 (isolement de l'acide (7R)-cannabicoumarononique A)PMID 19344127
- « Cannabinoids, Phenolics, Terpenes and Alkaloids of Cannabis », Molecules, 2021 (classe des cannabinoïdes divers, absence de données pharmacologiques)
- Légifrance, arrêté du 22 février 1990 fixant la liste des substances classées comme stupéfiants, annexe IV
Biosynthetic pathway
No dedicated enzyme is known. The scaffold derives from the common cannabinoid pathway, from cannabigerolic acid, then from an oxidative transformation of the pyran ring of the tetrahydrocannabinol or cannabichromene type which closes a furan ring onto the second phenolic oxygen. The authors of the 1978 work related the structure obtained to that of cannabichromanone. The hypothesis of a formation at least partly by oxidation of the resin during drying, storage or extraction has never been ruled out, and the genuinely biosynthetic share remains undetermined.
Legal framework
France
In France, cannabicoumaronone is named in no annex of the decree of 22 February 1990 setting the list of substances scheduled as narcotics. Nor is it an ester, an ether or a salt of tetrahydrocannabinol: its aromatic benzofuran core is not a tetrahydrocannabinol, so that the generic clause of annex IV, "Tetrahydrocannabinols, their esters, ethers, salts as well as the salts of the aforementioned derivatives", does not cover it. The molecule is therefore unscheduled, with no specific text concerning it. The applicable framework remains that of the plant and of finished products: a hemp-derived product must comply with the regulatory THC threshold, and exceeding that threshold renders the product unlawful irrespective of the presence of minor cannabinoids.
European Union
At European level, cannabicoumaronone appears neither in the schedules of the international conventions of 1961 and 1971, nor in the lists of substances placed under control by decision of the Council of the European Union. No notification concerning it has been published by the EUDA early warning system, formerly the EMCDDA, and no WHO assessment has been devoted to it. Member States maintain distinct national lists, some of which rest on generic clauses liable to capture unnamed cannabinoid derivatives, which makes country-by-country verification necessary. In food terms, no extract containing this molecule holds an authorisation under the Novel Food regulation.
Sources: EUR-Lex, UNODC, CND, ANSM, IUPHAR/BPS, ChEBI, EUDA. Our method.
Structural classification
- Class
- Minor phytocannabinoid
- Origin
- A very minor constituent of Cannabis sativa resin, originally isolated from hashish extracts. The molecule appears in the so-called "miscellaneous" class of cannabis phytochemical inventories, alongside cannabichromanone and cannabicoumarononic acid A. The quantities obtained in the isolation work were extremely small and there is today no standardised commercial source, nor any widely distributed reference analytical standard.
- Status
- Unscheduled
Cannabinoïde à noyau benzofurane, appelé coumarone dans la nomenclature ancienne : squelette 3,4-dihydrofuro[4,3,2-de]chromène portant un groupement gem-diméthyle, une chaîne pentyle en C5 et une chaîne latérale butan-2-one. Les deux oxygènes issus du résorcinol sont tous deux engagés dans un cycle, l'un dans le pyrane, l'autre dans le furane, si bien que la molécule ne possède plus de phénol libre. Les inventaires phytochimiques la rangent dans la classe dite « divers ».
Pharmacokinetics
Aucune étude d'absorption, de distribution ou d'élimination n'a été publiée pour cette molécule. Par analogie avec les autres cannabinoïdes, une forte lipophilie et une très faible solubilité aqueuse sont attendues, mais aucun paramètre mesuré, demi-vie, biodisponibilité ou volume de distribution, n'est disponible.
Metabolism
Le métabolisme de la cannabicoumaronone n'a fait l'objet d'aucun travail, ni sur microsomes hépatiques ni chez l'animal. Les cytochromes éventuellement impliqués, les voies de conjugaison et les métabolites formés restent tous inconnus.
Toxicology and risks
Aucune évaluation toxicologique n'existe : pas d'essai de cytotoxicité, pas de test de génotoxicité, aucune dose sans effet observé, aucun signalement clinique ou toxicologique répertorié. L'absence de données ne constitue pas une preuve d'innocuité, et la molécule ne peut être considérée comme évaluée pour un usage humain.
Detection and analysis
La cannabicoumaronone n'est ciblée par aucun test de dépistage courant, ceux-ci portant sur le THC et son métabolite carboxylé. Elle n'apparaît que dans les profils chromatographiques détaillés de la résine et de l'extrait, en chromatographie gazeuse ou liquide couplée à la spectrométrie de masse, souvent par déconvolution de signaux de faible abondance. Aucune méthode validée ni étalon certifié ne lui est consacré en pratique forensique.
References
- 1.PubChem, Cannabicoumaronone, CID 625303 (identifiants, synonymes, sources LOTUS et DSSTox)
- 2.Grote H., Spiteller G., « Neue Cannabinoide III : Die Struktur des Cannabicumaronons und analoger Verbindungen », Tetrahedron, 1978, 34(21), 3207-3213 (isolement à partir d'extraits de haschisch)
- 3.Radwan M.M. et al., « Biologically Active Cannabinoids from High-Potency Cannabis sativa », Journal of Natural Products, 2009 (isolement de l'acide (7R)-cannabicoumarononique A)PMID 19344127
- 4.« Cannabinoids, Phenolics, Terpenes and Alkaloids of Cannabis », Molecules, 2021 (classe des cannabinoïdes divers, absence de données pharmacologiques)
- 5.Légifrance, arrêté du 22 février 1990 fixant la liste des substances classées comme stupéfiants, annexe IV
Structured data
- InChIKey
- CSSYBWPIBDITMG-UHFFFAOYSA-N
- SMILES
- CCCCCC1=CC2=C3C(=C1)OC(C(C3=CO2)CCC(=O)C)(C)C
- Formula
- C21H28O3
- Molar mass
- 328.40 g·mol⁻¹
- PubChem CID
- 625303
LLM ingestion format: a structured superset of the entry (identifiers, binding, versioned legal status). Full corpus.