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Alfei S, Schito GC, Schito AM. Synthetic Pathways to Non-Psychotropic Phytocannabinoids as Promising Molecules to Develop Novel Antibiotics: A Review. Pharmaceutics 2023; 15:1889. [PMID: 37514074 PMCID: PMC10384972 DOI: 10.3390/pharmaceutics15071889] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2023] [Revised: 06/27/2023] [Accepted: 07/01/2023] [Indexed: 07/30/2023] Open
Abstract
Due to the rapid emergence of multi drug resistant (MDR) pathogens against which current antibiotics are no longer functioning, severe infections are becoming practically untreatable. Consequently, the discovery of new classes of effective antimicrobial agents with novel mechanism of action is becoming increasingly urgent. The bioactivity of Cannabis sativa, an herbaceous plant used for millennia for medicinal and recreational purposes, is mainly due to its content in phytocannabinoids (PCs). Among the 180 PCs detected, cannabidiol (CBD), Δ8 and Δ9-tetrahydrocannabinols (Δ8-THC and Δ9-THC), cannabichromene (CBC), cannabigerol (CBG), cannabinol (CBN) and some of their acidic precursors have demonstrated from moderate to potent antibacterial effects against Gram-positive bacteria (MICs 0.5-8 µg/mL), including methicillin-resistant Staphylococcus aureus (MRSA), epidemic MRSA (EMRSA), as well as fluoroquinolone and tetracycline-resistant strains. Particularly, the non-psychotropic CBG was also capable to inhibit MRSA biofilm formation, to eradicate even mature biofilms, and to rapidly eliminate MRSA persiter cells. In this scenario, CBG, as well as other minor non-psychotropic PCs, such as CBD, and CBC could represent promising compounds for developing novel antibiotics with high therapeutic potential. Anyway, further studies are necessary, needing abundant quantities of such PCs, scarcely provided naturally by Cannabis plants. Here, after an extensive overture on cannabinoids including their reported antimicrobial effects, aiming at easing the synthetic production of the necessary amounts of CBG, CBC and CBD for further studies, we have, for the first time, systematically reviewed the synthetic pathways utilized for their synthesis, reporting both reaction schemes and experimental details.
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Affiliation(s)
- Silvana Alfei
- Department of Pharmacy (DIFAR), University of Genoa, Viale Cembrano, 4, 16148 Genoa, Italy
| | - Gian Carlo Schito
- Department of Surgical Sciences and Integrated Diagnostics (DISC), University of Genoa, Viale Benedetto XV, 6, 16132 Genova, Italy
| | - Anna Maria Schito
- Department of Surgical Sciences and Integrated Diagnostics (DISC), University of Genoa, Viale Benedetto XV, 6, 16132 Genova, Italy
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2
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La Maida N, Di Giorgi A, Pichini S, Busardò FP, Huestis MA. Recent challenges and trends in forensic analysis: Δ9-THC isomers pharmacology, toxicology and analysis. J Pharm Biomed Anal 2022; 220:114987. [PMID: 35985136 DOI: 10.1016/j.jpba.2022.114987] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2022] [Revised: 08/03/2022] [Accepted: 08/05/2022] [Indexed: 10/15/2022]
Abstract
Δ9-tetrahydrocannabinol (Δ9-THC) isomers, especially Δ8-tetrahydrocannabinol (Δ8-THC), are increasing in foods, beverages, and e-cigarettes liquids. A major factor is passage of the Agriculture Improvement Act (AIA) that removed hemp containing less than 0.3 % Δ9-THC from the definition of "marijuana" or cannabis. CBD-rich hemp flooded the market resulting in excess product that could be subjected to CBD cyclization to produce Δ8-THC. This process utilizes strong acid and yields toxic byproducts that frequently are not removed prior to sale and are currently inadequately studied. Pharmacological activity is qualitatively similar for Δ8-THC and Δ9-THC, but most preclinical studies in mice, rats, and monkeys documented greater ∆9-THC potency. Both isomers caused graded dose-response effects on euphoria, blurred vision, mental confusion and lethargy, although Δ8-THC was at least 25 % less potent. The most common analytical methodologies providing baseline resolution of ∆8-THC and ∆9-THC in non-biological matrices are liquid-chromatography coupled to diode-array detection (LC-DAD or LC-PDA), while liquid chromatography coupled to mass spectrometry is preferred for biological matrices. Other available analytical methods are gas-chromatography-mass spectrometry (GC-MS) and quantitative nuclear magnetic resonance (QNMR). Current knowledge on the pharmacology of ∆8-THC and other ∆9-THC isomers are reviewed to raise awareness of the activity of these isomers in cannabis products, as well as analytical methods to discriminate ∆9-THC qualitatively, and quantitatively and ∆8-THC in biological and non-biological matrices.
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Affiliation(s)
- Nunzia La Maida
- Unit of Forensic Toxicology, Department of Anatomical, Histological, Forensic, and Orthopedic Sciences, Università la Sapienza, V. Le Regina Elena 366, 00161 Rome, Italy
| | - Alessandro Di Giorgi
- Department of Excellence of Biomedical Science and Public Health, University "Politecnica delle Marche" of Ancona, Via Tronto 10/a, 60124, Ancona, Italy
| | - Simona Pichini
- National Centre on Addiction and Doping, Istituto Superiore di Sanità, V. Le Regina Elena 299, 00161 Rome, Italy
| | - Francesco Paolo Busardò
- Department of Excellence of Biomedical Science and Public Health, University "Politecnica delle Marche" of Ancona, Via Tronto 10/a, 60124, Ancona, Italy.
| | - Marilyn A Huestis
- Institute of Emerging Health Professions, Thomas Jefferson University, Philadelphia, PA, USA
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3
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Tagen M, Klumpers LE. Review of delta-8-tetrahydrocannabinol (Δ 8 -THC): Comparative pharmacology with Δ 9 -THC. Br J Pharmacol 2022; 179:3915-3933. [PMID: 35523678 DOI: 10.1111/bph.15865] [Citation(s) in RCA: 50] [Impact Index Per Article: 25.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2022] [Revised: 03/29/2022] [Accepted: 04/26/2022] [Indexed: 12/13/2022] Open
Abstract
The use of the intoxicating cannabinoid delta-8-tetrahydrocannabinol (Δ8 -THC) has grown rapidly over the last several years. There have been dozens of Δ8 -THC studies dating back over many decades, yet no review articles have comprehensively covered these findings. In this review, we summarize the pharmacological studies of Δ8 -THC, including receptor binding, cell signalling, in vivo cannabimimetic activity, clinical activity and pharmacokinetics. We give special focus to studies that directly compared Δ8 -THC to its more commonly studied isomer, Δ9 -THC. Overall, the pharmacokinetics and pharmacodynamics of Δ8 -THC and Δ9 -THC are very similar. Δ8 -THC is a partial agonist of the cannabinoid CB1 receptor and has cannabimimetic activity in both animals and humans. The reduced potency of Δ8 -THC in clinical studies compared with Δ9 -THC can be explained by weaker cannabinoid CB1 receptor affinity, although there are other plausible mechanisms that may contribute. We highlight the gaps in our knowledge of Δ8 -THC pharmacology where further studies are needed, particularly in humans.
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Affiliation(s)
| | - Linda E Klumpers
- Verdient Science LLC, Denver, Colorado.,Tomori Pharmacology Inc., Denver, Colorado, USA.,Department of Pharmacology, Larner College of Medicine, University of Vermont, Burlington, Vermont, USA.,Anebulo Pharmaceuticals Inc., Austin, Texas, USA
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4
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Mahmud MS, Hossain MS, Ahmed ATMF, Islam MZ, Sarker ME, Islam MR. Antimicrobial and Antiviral (SARS-CoV-2) Potential of Cannabinoids and Cannabis sativa: A Comprehensive Review. Molecules 2021; 26:7216. [PMID: 34885798 PMCID: PMC8658882 DOI: 10.3390/molecules26237216] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2021] [Revised: 11/21/2021] [Accepted: 11/23/2021] [Indexed: 12/26/2022] Open
Abstract
Antimicrobial resistance has emerged as a global health crisis and, therefore, new drug discovery is a paramount need. Cannabis sativa contains hundreds of chemical constituents produced by secondary metabolism, exerting outstanding antimicrobial, antiviral, and therapeutic properties. This paper comprehensively reviews the antimicrobial and antiviral (particularly against SARS-CoV-2) properties of C. sativa with the potential for new antibiotic drug and/or natural antimicrobial agents for industrial or agricultural use, and their therapeutic potential against the newly emerged coronavirus disease (COVID-19). Cannabis compounds have good potential as drug candidates for new antibiotics, even for some of the WHO's current priority list of resistant pathogens. Recent studies revealed that cannabinoids seem to have stable conformations with the binding pocket of the Mpro enzyme of SARS-CoV-2, which has a pivotal role in viral replication and transcription. They are found to be suppressive of viral entry and viral activation by downregulating the ACE2 receptor and TMPRSS2 enzymes in the host cellular system. The therapeutic potential of cannabinoids as anti-inflammatory compounds is hypothesized for the treatment of COVID-19. However, more systemic investigations are warranted to establish the best efficacy and their toxic effects, followed by preclinical trials on a large number of participants.
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Affiliation(s)
- Md Sultan Mahmud
- Faculty of Textile Engineering, Bangladesh University of Textiles, Dhaka 1208, Bangladesh; (M.S.M.); (A.T.M.F.A.); (M.Z.I.)
| | - Mohammad Sorowar Hossain
- Biomedical Research Foundation, Dhaka 1230, Bangladesh;
- School of Environment and Life Sciences, Independent University, Dhaka 1229, Bangladesh
| | - A. T. M. Faiz Ahmed
- Faculty of Textile Engineering, Bangladesh University of Textiles, Dhaka 1208, Bangladesh; (M.S.M.); (A.T.M.F.A.); (M.Z.I.)
| | - Md Zahidul Islam
- Faculty of Textile Engineering, Bangladesh University of Textiles, Dhaka 1208, Bangladesh; (M.S.M.); (A.T.M.F.A.); (M.Z.I.)
| | - Md Emdad Sarker
- Faculty of Textile Engineering, Bangladesh University of Textiles, Dhaka 1208, Bangladesh; (M.S.M.); (A.T.M.F.A.); (M.Z.I.)
| | - Md Reajul Islam
- Faculty of Textile Engineering, Bangladesh University of Textiles, Dhaka 1208, Bangladesh; (M.S.M.); (A.T.M.F.A.); (M.Z.I.)
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5
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Lal S, Shekher A, Puneet, Narula AS, Abrahamse H, Gupta SC. Cannabis and its constituents for cancer: History, biogenesis, chemistry and pharmacological activities. Pharmacol Res 2020; 163:105302. [PMID: 33246167 DOI: 10.1016/j.phrs.2020.105302] [Citation(s) in RCA: 36] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/19/2020] [Revised: 10/03/2020] [Accepted: 11/10/2020] [Indexed: 12/13/2022]
Abstract
Cannabis has long been used for healing and recreation in several regions of the world. Over 400 bioactive constituents, including more than 100 phytocannabinoids, have been isolated from this plant. The non-psychoactive cannabidiol (CBD) and the psychoactive Δ9-tetrahydrocannabinol (Δ9-THC) are the major and widely studied constituents from this plant. Cannabinoids exert their effects through the endocannabinoid system (ECS) that comprises cannabinoid receptors (CB1, CB2), endogenous ligands, and metabolizing enzymes. Several preclinical studies have demonstrated the potential of cannabinoids against leukemia, lymphoma, glioblastoma, and cancers of the breast, colorectum, pancreas, cervix and prostate. Cannabis and its constituents can modulate multiple cancer related pathways such as PKB, AMPK, CAMKK-β, mTOR, PDHK, HIF-1α, and PPAR-γ. Cannabinoids can block cell growth, progression of cell cycle and induce apoptosis selectively in tumour cells. Cannabinoids can also enhance the efficacy of cancer therapeutics. These compounds have been used for the management of anorexia, queasiness, and pain in cancer patients. Cannabinoid based products such as dronabinol, nabilone, nabiximols, and epidyolex are now approved for medical use in cancer patients. Cannabinoids are reported to produce a favourable safety profile. However, psychoactive properties and poor bioavailability limit the use of some cannabinoids. The Academic Institutions across the globe are offering training courses on cannabis. How cannabis and its constituents exert anticancer activities is discussed in this article. We also discuss areas that require attention and more extensive research.
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Affiliation(s)
- Samridhi Lal
- Amity Institute of Pharmacy, Amity University, Gurgaon, Haryana, 122413, India
| | - Anusmita Shekher
- Department of Biochemistry, Institute of Science, Banaras Hindu University, Varanasi, 221 005, India
| | - Puneet
- Department of General Surgery, Institute of Medical Sciences, Banaras Hindu University, Varanasi, 221 005, India
| | | | - Heidi Abrahamse
- Laser Research Centre, University of Johannesburg, Doornfontein, 2028, South Africa
| | - Subash C Gupta
- Department of Biochemistry, Institute of Science, Banaras Hindu University, Varanasi, 221 005, India.
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6
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Chicca A, Schafroth MA, Reynoso-Moreno I, Erni R, Petrucci V, Carreira EM, Gertsch J. Uncovering the psychoactivity of a cannabinoid from liverworts associated with a legal high. SCIENCE ADVANCES 2018; 4:eaat2166. [PMID: 30397641 PMCID: PMC6200358 DOI: 10.1126/sciadv.aat2166] [Citation(s) in RCA: 42] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/13/2018] [Accepted: 09/19/2018] [Indexed: 05/25/2023]
Abstract
Phytochemical studies on the liverwort Radula genus have previously identified the bibenzyl (-)-cis-perrottetinene (cis-PET), which structurally resembles (-)-Δ9-trans-tetrahydrocannabinol (Δ9-trans-THC) from Cannabis sativa L. Radula preparations are sold as cannabinoid-like legal high on the internet, even though pharmacological data are lacking. Herein, we describe a versatile total synthesis of (-)-cis-PET and its (-)-trans diastereoisomer and demonstrate that both molecules readily penetrate the brain and induce hypothermia, catalepsy, hypolocomotion, and analgesia in a CB1 receptor-dependent manner in mice. The natural product (-)-cis-PET was profiled on major brain receptors, showing a selective cannabinoid pharmacology. This study also uncovers pharmacological differences between Δ9-THC and PET diastereoisomers. Most notably, (-)-cis-PET and (-)-trans-PET significantly reduced basal brain prostaglandin levels associated with Δ9-trans-THC side effects in a CB1 receptor-dependent manner, thus mimicking the action of the endocannabinoid 2-arachidonoyl glycerol. Therefore, the natural product (-)-cis-PET is a psychoactive cannabinoid from bryophytes, illustrating the existence of convergent evolution of bioactive cannabinoids in the plant kingdom. Our findings may have implications for bioprospecting and drug discovery and provide a molecular rationale for the reported effects upon consumption of certain Radula preparations as moderately active legal highs.
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Affiliation(s)
- A. Chicca
- Institute of Biochemistry and Molecular Medicine, NCCR TransCure, University of Bern, Bühlstrasse 28, 3012 Bern, Switzerland
| | - M. A. Schafroth
- Department of Chemistry and Applied Biosciences, Laboratory of Organic Chemistry, ETH Zurich, Vladimir-Prelog-Weg 3, 8093 Zürich, Switzerland
| | - I. Reynoso-Moreno
- Institute of Biochemistry and Molecular Medicine, NCCR TransCure, University of Bern, Bühlstrasse 28, 3012 Bern, Switzerland
| | - R. Erni
- Department of Chemistry and Applied Biosciences, Laboratory of Organic Chemistry, ETH Zurich, Vladimir-Prelog-Weg 3, 8093 Zürich, Switzerland
| | - V. Petrucci
- Institute of Biochemistry and Molecular Medicine, NCCR TransCure, University of Bern, Bühlstrasse 28, 3012 Bern, Switzerland
| | - E. M. Carreira
- Department of Chemistry and Applied Biosciences, Laboratory of Organic Chemistry, ETH Zurich, Vladimir-Prelog-Weg 3, 8093 Zürich, Switzerland
| | - J. Gertsch
- Institute of Biochemistry and Molecular Medicine, NCCR TransCure, University of Bern, Bühlstrasse 28, 3012 Bern, Switzerland
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7
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Giorgi PD, Liautard V, Pucheault M, Antoniotti S. Biomimetic Cannabinoid Synthesis Revisited: Batch and Flow All-Catalytic Synthesis of (±)-ortho
-Tetrahydrocannabinols and Analogues from Natural Feedstocks. European J Org Chem 2018. [DOI: 10.1002/ejoc.201800064] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Pascal D. Giorgi
- Institut de Chimie de Nice; CNRS; Université Cote d'Azur; Parc Valrose 06108 Nice cedex 2 France
| | - Virginie Liautard
- Institut des Sciences Moléculaires; UMR 5255 CNRS - Université de Bordeaux; 351 cours de la libération 33405 Talence cedex France
| | - Mathieu Pucheault
- Institut des Sciences Moléculaires; UMR 5255 CNRS - Université de Bordeaux; 351 cours de la libération 33405 Talence cedex France
| | - Sylvain Antoniotti
- Institut de Chimie de Nice; CNRS; Université Cote d'Azur; Parc Valrose 06108 Nice cedex 2 France
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8
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Hanuš LO, Meyer SM, Muñoz E, Taglialatela-Scafati O, Appendino G. Phytocannabinoids: a unified critical inventory. Nat Prod Rep 2016; 33:1357-1392. [DOI: 10.1039/c6np00074f] [Citation(s) in RCA: 402] [Impact Index Per Article: 50.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Cannabis sativaL. is a prolific, but not exclusive, producer of a diverse group of isoprenylated resorcinyl polyketides collectively known as phytocannabinoids.
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Affiliation(s)
- Lumír Ondřej Hanuš
- Institute for Drug Research
- School of Pharmacy
- Faculty of Medicine
- Hebrew University
- Jerusalem 91120
| | - Stefan Martin Meyer
- Phytoplant Research S. L
- Rabanales 21 – The Science and Technology Park of Cordoba
- Cordoba
- Spain
| | - Eduardo Muñoz
- Maimonides Biomedical Research Institute of Córdoba
- Reina Sofía University Hospital
- Department of Cell Biology, Physiology and Immunology
- University of Córdoba
- Córdoba
| | | | - Giovanni Appendino
- Dipartimento di Scienze del Farmaco
- Università del Piemonte Orientale
- 28100 Novara
- Italy
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9
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Nadipuram AK, Krishnamurthy M, Ferreira AM, Li W, Moore BM. Synthesis and testing of novel classical cannabinoids: exploring the side chain ligand binding pocket of the CB1 and CB2 receptors. Bioorg Med Chem 2003; 11:3121-32. [PMID: 12818675 DOI: 10.1016/s0968-0896(03)00238-4] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
A series of C3 cyclic side-chain analogues of classical cannabinoids were synthesized to probe the ligand binding pocket of the CB1 and CB2 receptors. The analogues were evaluated for CB1 and CB2 receptor binding affinities relative to delta(8)-THC. The C3 side-chain geometries of the analogues were studied using high field NMR spectroscopy and quantum mechanical calculations. The results of these studies provide insights into the geometry of the ligand binding pocket of the CB1 and CB2 receptors.
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MESH Headings
- Animals
- Binding Sites
- Cannabinoids/chemical synthesis
- Cannabinoids/metabolism
- Cell Membrane/metabolism
- Humans
- Ligands
- Magnetic Resonance Spectroscopy
- Models, Molecular
- Protein Binding
- Quantum Theory
- Receptor, Cannabinoid, CB1/chemistry
- Receptor, Cannabinoid, CB1/metabolism
- Receptor, Cannabinoid, CB2/chemistry
- Receptor, Cannabinoid, CB2/metabolism
- Receptors, Cannabinoid/metabolism
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Affiliation(s)
- Asha K Nadipuram
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Tennessee-Memphis, Memphis, TN 38103, USA
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10
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Abstract
Cannabinoids have a long history of consumption for recreational and medical reasons. The primary active constituent of the hemp plant Cannabis sativa is delta9-tetrahydrocannabinol (delta9-THC). In humans, psychoactive cannabinoids produce euphoria, enhancement of sensory perception, tachycardia, antinociception, difficulties in concentration and impairment of memory. The cognitive deficiencies seem to persist after withdrawal. The toxicity of marijuana has been underestimated for a long time, since recent findings revealed delta9-THC-induced cell death with shrinkage of neurons and DNA fragmentation in the hippocampus. The acute effects of cannabinoids as well as the development of tolerance are mediated by G protein-coupled cannabinoid receptors. The CB1 receptor and its splice variant CB1A, are found predominantly in the brain with highest densities in the hippocampus, cerebellum and striatum. The CB2 receptor is found predominantly in the spleen and in haemopoietic cells and has only 44% overall nucleotide sequence identity with the CB1 receptor. The existence of this receptor provided the molecular basis for the immunosuppressive actions of marijuana. The CB1 receptor mediates inhibition of adenylate cyclase, inhibition of N- and P/Q-type calcium channels, stimulation of potassium channels, and activation of mitogen-activated protein kinase. The CB2 receptor mediates inhibition of adenylate cyclase and activation of mitogen-activated protein kinase. The discovery of endogenous cannabinoid receptor ligands, anandamide (N-arachidonylethanolamine) and 2-arachidonylglycerol made the notion of a central cannabinoid neuromodulatory system plausible. Anandamide is released from neurons upon depolarization through a mechanism that requires calcium-dependent cleavage from a phospholipid precursor in neuronal membranes. The release of anandamide is followed by rapid uptake into the plasma and hydrolysis by fatty-acid amidohydrolase. The psychoactive cannabinoids increase the activity of dopaminergic neurons in the ventral tegmental area-mesolimbic pathway. Since these dopaminergic circuits are known to play a pivotal role in mediating the reinforcing (rewarding) effects of the most drugs of abuse, the enhanced dopaminergic drive elicited by the cannabinoids is thought to underlie the reinforcing and abuse properties of marijuana. Thus, cannabinoids share a final common neuronal action with other major drugs of abuse such as morphine, ethanol and nicotine in producing facilitation of the mesolimbic dopamine system.
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Affiliation(s)
- A Ameri
- Department of Pharmacy and Pharmacology of Natural Compounds, University of Ulm, Germany
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11
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Howlett AC. Cannabinoid inhibition of adenylate cyclase: relative activity of constituents and metabolites of marihuana. Neuropharmacology 1987; 26:507-12. [PMID: 3601007 DOI: 10.1016/0028-3908(87)90035-9] [Citation(s) in RCA: 74] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
delta 9Tetrahydrocannabinol (THC) has been shown to inhibit the activity of adenylate cyclase in the N18TG2 clone of murine neuroblastoma cells. The concentration of delta 9THC exhibiting half-maximal inhibition was 500 nM. delta 8Tetrahydrocannabinol was less active, and cannabinol was only partially active. Cannabidiol, cannabigerol, cannabichromene, olivetol and compounds having a reduced length of the C3 alkyl side chain were inactive. The metabolites of delta 8THC and delta 9THC hydroxylated at the C11 position were more potent than the parent drugs. However, hydroxylation at the C8 position of the terpenoid ring resulted in loss of activity. Compounds hydroxylated along the C3 alkyl side chain were equally efficacious but less potent than delta 9THC. These findings are compared to the pharmacology of cannabinoids reported for psychological effects in humans and behavioral effects in a variety of animal models.
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13
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Chiodini L, Di Ciommo M, Merlini L. Synthesis of someN-heteroaromatic analogues of cannabinoids. J Heterocycl Chem 1981. [DOI: 10.1002/jhet.5570180105] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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14
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Kettenes-van den Bosch JJ, Salemink CA, van Noordwijk J, Khan I. Biological activity of the tetrahydrocannabinols. JOURNAL OF ETHNOPHARMACOLOGY 1980; 2:197-231. [PMID: 6251315 DOI: 10.1016/s0378-8741(80)81002-6] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
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15
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Skinner WA, Rackur G, Uyeno E. Structure--activity studies on tetrahydro- and hexahydrocannabinol derivatives. J Pharm Sci 1979; 68:330-2. [PMID: 423121 DOI: 10.1002/jps.2600680319] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
A series of tetrahydro- and hexahydrocannabinol derivatives was prepared in which the substituents at position 9 were varied. These compounds were evaluated in mice for their effects on locomotor acitivty, body temperature, muscle tone, and analgesia. Depression of body temperature and locomotor function was demonstrated by several compounds, but all were devoid of any significant analgesic activity.
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16
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Uliss DB, Handrick GR, Dalzell HC, Razdan RK. A novel cannabinoid containing a 1,8-cineol moiety. EXPERIENTIA 1977; 33:577-8. [PMID: 862772 DOI: 10.1007/bf01946505] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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17
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Synthesis of racemic and optically active Δ1- and Δ6-3,4-cis-tetrahydrocannabinols11aPart XIX. For Part XVIII, see: R.K. Razdan, H.C. Dalzell and P. Herlihy, J. Heterocyclic Chem. 13, 1101 (1976); b Preliminary Communication of racemic synthesis: D.B. Uliss, R.K. Razdan, H.C. Dalzell and G.R. Handrick, Tetrahedron Letters 4369 (1975); c Presented in part at the 170th National Meeting of the American Chemical Society, San Francisco, Calif., 30 Aug.1976, ORGN 12. Tetrahedron 1977. [DOI: 10.1016/0040-4020(77)80313-x] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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18
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Razdan RK, Dalzell HC, Herlihy P. Hashish (1): Ceric ammonium nitrate oxidation of Δ6a, 1 0 a-tetrahydrocannabinols (THC's). J Heterocycl Chem 1976. [DOI: 10.1002/jhet.5570130535] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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20
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Kraatz U, Korte F. Synthese von 1-desoxy-Δ8-tetrahydrocannabinol -ein beitrag zur struktur-aktivitätsbeziehung am Δ8-tetrahydrocannabinol-. Tetrahedron Lett 1976. [DOI: 10.1016/s0040-4039(00)78094-4] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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21
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Razdan RK, Howes JF, Uliss DB, Dalzell HC, Handrick GR, Dewey WL. (-)-8beta-hydroxymethyl-delta1-tetrahydrocannabinol: a novel physiologically active analog of delta1-tetrahydrocannabinol. EXPERIENTIA 1976; 32:416-7. [PMID: 1269636 DOI: 10.1007/bf01920767] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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