Cited by 28Cannabis and Cannabinoid ResearchBioactive natural compoundsPhytochemistry and Biological Activities

Chemistry and Biological Activities of Cannflavins of the Cannabis Plant

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Abdel-Kader, Maged S., Radwan, Mohamed M., Metwaly, Ahmed M., Eissa, Ibrahim H., Hazekamp, Arno, ElSohly, Mahmoud A.·2023·Cannabis & Cannabinoid Research

Abstract

Background: Throughout history, Cannabis has had a significant influence on human life as one of the earliest plants cultivated by humans. The plant was a source of fibers used by the oldest known civilizations. Cannabis was also used medicinally in China, India, and ancient Egypt. Delta-9-tetrahydrocannabinol (Δ 9 -THC), the main psychoactive compound in the plant was identified in 1964 followed by more than 125 cannabinoids. More than 30 flavonoids were isolated from the plant including the characteristic flavonoids called cannflavins, which are prenylated or geranylated flavones. Material and Methods: In this review, the methods of extraction, isolation, identification, biosynthesis, chemical synthesis, analysis and pharmacological activity of these flavonoids are described. Results: The biosynthetic routes of the cannflavins from phenylalanine and malonyl CoA as well as the microbial biotransformation are also discussed. Details of the chemical synthesis are illustrated as an alternative to the isolation from the plant materials along with other possible sources of obtaining cannflavins. Detailed methods discussing the analysis of flavonoids in cannabis are presented, including the techniques used for separation and detection. Finally, the various biological activities of cannflavins are reviewed along with the available molecular docking studies. Conclusion: Despite the low level of cannflavins in cannabis hamper their development as naturally derived products, efforts need to be put in place to develop high yield synthetic or biosynthetic protocols for their production in order for their development as pharmaceutical products.

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Crossref · 10.1089/can.2023.0128

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  • Cannabis is rich in non-nitrogenous phenolic compounds, notably flavonoids and stilbenes, which have demonstrated antioxidant, anti-inflammatory, and antimicrobial properties.

    “In addition to NC compounds, Cannabis is also rich in non-nitrogenous phenolic compounds, notably flavonoids and stilbenes, which have demonstrated antioxidant, anti-inflammatory, and antimicrobial properties.”

    From Exploring the Lesser-Known Bioactive Natural Products of Plant Species of the Genus Cannabis L.: Alkaloids, Phenolic Compounds, and Their Therapeutic Potential (2025) · cites this paper as [16]

    The Introduction (page unavailable) identifies flavonoids as a major class of Cannabis compounds. The Biological Activities sections report anti-inflammatory effects of cannflavins and moderate antioxidant activity for cannflavins A and C. The paper does not establish the claim about stilbenes or demonstrate antimicrobial properties for the phenolic compounds it discusses. (LLM, conf=0.86)

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  • Flavonoids like cannaflavin A and B, unique to Cannabis, demonstrated notable inhibition of inflammatory pathways, with potency exceeding some NSAIDs.

    “Flavonoids like cannaflavin A and B, unique to Cannabis, demonstrated the notable inhibition of inflammatory pathways, with potency exceeding some NSAIDs [15,16,17].”

    From Exploring the Lesser-Known Bioactive Natural Products of Plant Species of the Genus Cannabis L.: Alkaloids, Phenolic Compounds, and Their Therapeutic Potential (2025) · cites this paper as [16]

    The Introduction identifies cannflavins A and B as compounds isolated from cannabis, and the Anti-inflammatory effects section reports that both inhibit inflammatory enzymes. That section places their inhibition of prostaglandin E release between aspirin and indomethacin/dexamethasone, but does not explicitly establish that their potency exceeds an NSAID; the copy also does not establish that the compounds are exclusive to Cannabis. No page numbers are provided in our copy. (LLM, conf=0.82)

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Research works printed but not linked: 4

  1. [2]Williamson E. The Medicinal Uses of Cannabis and Cannabinoids. In: Guy GW, Whittle BA, Robson PJ, eds. Pharmaceutical Press: London; 2004; pp. 448. In Wiley Online Library, Saints L-d. Part of a series on Cannabis. ISBN: 0-85369-517-2.
  2. [6]Camp W. The antiquity of hemp as an economic plant. J NY Bot Gard 1936; 37: 110– 114.
  3. [29]Werz O, Seegers J, Schaible AM, et al. Cannflavins from hemp sprouts, a novel cannabinoid-free hemp food product, target microsomal prostaglandin E2 synthase-1 and 5-lipoxygenase. Pharma Nutr 2014; 2: 53– 60.
  4. [59]Tomko A. Cannflavins A and B exert anti-cancer effects in chemotheraputic resistant cell lines. Master Thesis; University of Dalhousie University, Canada; 2022.

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Authors
Abdel-Kader, M. S., Radwan, M. M., Metwaly, A. M., Eissa, I. H., Hazekamp, A., & ElSohly, M. A.
Affiliations
  • Prince Sattam Bin Abdulaziz University (SA)
  • University of Mississippi (US)
  • Al-Azhar University (EG)
  • Hazekamp Herbal Consulting, Leiden, The Netherlands.
Corresponding author
Abdel-Kader, Maged S.
Venue
Cannabis & Cannabinoid Research
Published
2023-12-01
Volume
8
Issue
6
Pages
974-985
ISSN
  • 2378-8763 (ISSN-L)
  • 2578-5125
OpenAlex
W4387094102
Cited by
28
References
57
Citations by year
2026: 11 · 2025: 6 · 2024: 9 · 2023: 2
FWCI
1.02
Type
journal article
Language
en
Open access
Locations
  • Cannabis and Cannabinoid Research (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • Greater South Information System
Topics
  • Health Sciences › Medicine › Pharmacology › Cannabis and Cannabinoid Research
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Bioactive natural compounds
  • Life Sciences › Agricultural and Biological Sciences › Plant Science › Phytochemistry and Biological Activities
Keywords
cannabis, flavonoids, prenylated flavones, flavonoid biosynthesis, microbial transformation, chemical synthesis, extraction and isolation, molecular docking, biological activity, phenylalanine, malonyl-CoA
MeSH terms
Cannabis, Flavonoids, Hallucinogens, Humans, Flavones, Molecular Docking Simulation, Cannabinoid Receptor Agonists

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