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Record Information
Version2.0
Created at2022-03-10 18:59:41 UTC
Updated at2022-03-10 22:19:39 UTC
NP-MRD IDNP0045200
Secondary Accession NumbersNone
Natural Product Identification
Common NameCannflavin B
DescriptionCannflavin B belongs to the class of organic compounds known as 6-prenylated flavones. These are flavones that feature a C5-isoprenoid substituent at the 6-position. There are three known cannflavins including cannflavin A, B and C. Cannflavins are unique to Cannabis sativa (PMID: 3754224 ). Cannflavin B was identified in Cannabis in 1985 (PMID: 3859295 ; PMID: 3754224 ). Chemically, cannflavins are prenylflavonoids and are unrelated to THC and other cannabinoids. Cannflavin B is biosynthesized via the prenylation of chrysoeriol (PMID: 31151063 ). Specifically, an aromatic prenyltransferase (CsPT3) catalyzes the regiospecific addition of dimethylallyl diphosphate (DMAPP) to the methylated flavone, chrysoeriol to produce Cannflavin A. Chrysoeriol is produced through the conversion of luteolin via the O-methyltransferase (CsOMT21) (PMID: 31151063 ). Cannflavin B is a very hydrophobic molecule, practically insoluble in water, and relatively neutral. Cannflavins exhibit anti-inflammatory activity that is thirty times that of aspirin (PMID: 31151063 ). It has been found that cannflavin B is an inhibitor of prostaglandin E2 production which appears to help explain its strong anti-inflammatory properties (PMID: 3859295 ; PMID: 3754224 ). Cannflavins were the first flavonoids identified to have direct inhibitory activity of two important pro-inflammatory mediators: Arachidonate 5-lipoxygenase (5-LOX) and prostaglandin E synthase (mPGES-1).
Structure
Thumb
Synonyms
ValueSource
CannflavinMeSH
Cannflavin aMeSH
6-PrenylchrysoeriolPhytoBank
CanniflavonePhytoBank
Canniflavone 1PhytoBank
Chemical FormulaC21H20O6
Average Mass368.3850 Da
Monoisotopic Mass368.12599 Da
IUPAC Name5,7-dihydroxy-2-(4-hydroxy-3-methoxyphenyl)-6-(3-methylbut-2-en-1-yl)-4H-chromen-4-one
Traditional Namecannflavin B
CAS Registry NumberNot Available
SMILES
COC1=C(O)C=CC(=C1)C1=CC(=O)C2=C(O)C(CC=C(C)C)=C(O)C=C2O1
InChI Identifier
InChI=1S/C21H20O6/c1-11(2)4-6-13-15(23)9-19-20(21(13)25)16(24)10-17(27-19)12-5-7-14(22)18(8-12)26-3/h4-5,7-10,22-23,25H,6H2,1-3H3
InChI KeyIXCUTZUASDSIJO-UHFFFAOYSA-N
Experimental Spectra
Not Available
Predicted Spectra
Spectrum TypeDescriptionDepositor IDDepositor OrganizationDepositorDeposition DateView
1D NMR13C NMR Spectrum (1D, 25 MHz, D2O, predicted)Wishart LabWishart LabDavid Wishart2021-06-20View Spectrum
1D NMR1H NMR Spectrum (1D, 100 MHz, D2O, predicted)Wishart LabWishart LabDavid Wishart2021-06-20View Spectrum
1D NMR13C NMR Spectrum (1D, 252 MHz, D2O, predicted)Wishart LabWishart LabDavid Wishart2021-06-20View Spectrum
1D NMR1H NMR Spectrum (1D, 1000 MHz, D2O, predicted)Wishart LabWishart LabDavid Wishart2021-06-20View Spectrum
1D NMR13C NMR Spectrum (1D, 50 MHz, D2O, predicted)Wishart LabWishart LabDavid Wishart2021-06-20View Spectrum
1D NMR1H NMR Spectrum (1D, 200 MHz, D2O, predicted)Wishart LabWishart LabDavid Wishart2021-06-20View Spectrum
1D NMR13C NMR Spectrum (1D, 75 MHz, D2O, predicted)Wishart LabWishart LabDavid Wishart2021-06-20View Spectrum
1D NMR1H NMR Spectrum (1D, 300 MHz, D2O, predicted)Wishart LabWishart LabDavid Wishart2021-06-20View Spectrum
1D NMR13C NMR Spectrum (1D, 101 MHz, D2O, predicted)Wishart LabWishart LabDavid Wishart2021-06-20View Spectrum
1D NMR1H NMR Spectrum (1D, 400 MHz, D2O, predicted)Wishart LabWishart LabDavid Wishart2021-06-20View Spectrum
1D NMR13C NMR Spectrum (1D, 126 MHz, D2O, predicted)Wishart LabWishart LabDavid Wishart2021-06-20View Spectrum
1D NMR1H NMR Spectrum (1D, 500 MHz, D2O, predicted)Wishart LabWishart LabDavid Wishart2021-06-20View Spectrum
1D NMR13C NMR Spectrum (1D, 151 MHz, D2O, predicted)Wishart LabWishart LabDavid Wishart2021-06-20View Spectrum
1D NMR1H NMR Spectrum (1D, 600 MHz, D2O, predicted)Wishart LabWishart LabDavid Wishart2021-06-20View Spectrum
1D NMR13C NMR Spectrum (1D, 176 MHz, D2O, predicted)Wishart LabWishart LabDavid Wishart2021-06-20View Spectrum
1D NMR1H NMR Spectrum (1D, 700 MHz, D2O, predicted)Wishart LabWishart LabDavid Wishart2021-06-20View Spectrum
1D NMR13C NMR Spectrum (1D, 201 MHz, D2O, predicted)Wishart LabWishart LabDavid Wishart2021-06-20View Spectrum
1D NMR1H NMR Spectrum (1D, 800 MHz, D2O, predicted)Wishart LabWishart LabDavid Wishart2021-06-20View Spectrum
1D NMR13C NMR Spectrum (1D, 226 MHz, D2O, predicted)Wishart LabWishart LabDavid Wishart2021-06-20View Spectrum
1D NMR1H NMR Spectrum (1D, 900 MHz, D2O, predicted)Wishart LabWishart LabDavid Wishart2021-06-20View Spectrum
Chemical Shift Submissions
Not Available
Species
Species of Origin
Species NameSourceReference
Cannabis indicaPlant
Cannabis sativaNULL
      Not Available
Dorstenia manniiPlant
Chemical Taxonomy
Description Belongs to the class of organic compounds known as 6-prenylated flavones. These are flavones that features a C5-isoprenoid substituent at the 6-position.
KingdomOrganic compounds
Super ClassPhenylpropanoids and polyketides
ClassFlavonoids
Sub ClassFlavones
Direct Parent6-prenylated flavones
Alternative Parents
Substituents
  • 6-prenylated flavone
  • 3p-methoxyflavonoid-skeleton
  • 4'-hydroxyflavonoid
  • 5-hydroxyflavonoid
  • 7-hydroxyflavonoid
  • Hydroxyflavonoid
  • Chromone
  • Benzopyran
  • Methoxyphenol
  • 1-benzopyran
  • Phenoxy compound
  • Anisole
  • Methoxybenzene
  • Phenol ether
  • 1-hydroxy-4-unsubstituted benzenoid
  • 1-hydroxy-2-unsubstituted benzenoid
  • Alkyl aryl ether
  • Phenol
  • Pyranone
  • Monocyclic benzene moiety
  • Benzenoid
  • Pyran
  • Vinylogous acid
  • Heteroaromatic compound
  • Organoheterocyclic compound
  • Ether
  • Oxacycle
  • Hydrocarbon derivative
  • Organooxygen compound
  • Organic oxide
  • Organic oxygen compound
  • Aromatic heteropolycyclic compound
Molecular FrameworkAromatic heteropolycyclic compounds
External Descriptors
Physical Properties
StateNot Available
Experimental Properties
PropertyValueReference
Melting PointNot AvailableNot Available
Boiling PointNot AvailableNot Available
Water SolubilityNot AvailableNot Available
LogPNot AvailableNot Available
Predicted Properties
PropertyValueSource
logP3.77ALOGPS
logP4.28ChemAxon
logS-4.4ALOGPS
pKa (Strongest Acidic)6.39ChemAxon
pKa (Strongest Basic)-4.8ChemAxon
Physiological Charge-1ChemAxon
Hydrogen Acceptor Count6ChemAxon
Hydrogen Donor Count3ChemAxon
Polar Surface Area96.22 ŲChemAxon
Rotatable Bond Count4ChemAxon
Refractivity103.62 m³·mol⁻¹ChemAxon
Polarizability38.97 ųChemAxon
Number of Rings3ChemAxon
BioavailabilityYesChemAxon
Rule of FiveYesChemAxon
Ghose FilterYesChemAxon
Veber's RuleNoChemAxon
MDDR-like RuleNoChemAxon
HMDB IDNot Available
DrugBank IDNot Available
Phenol Explorer Compound IDNot Available
FoodDB IDNot Available
KNApSAcK IDNot Available
Chemspider IDNot Available
KEGG Compound IDNot Available
BioCyc IDNot Available
BiGG IDNot Available
Wikipedia LinkNot Available
METLIN IDNot Available
PubChem Compound403815
PDB IDNot Available
ChEBI IDNot Available
Good Scents IDNot Available
References
General References
  1. Barrett ML, Scutt AM, Evans FJ: Cannflavin A and B, prenylated flavones from Cannabis sativa L. Experientia. 1986 Apr 15;42(4):452-3. doi: 10.1007/BF02118655. [PubMed:3754224 ]
  2. Barrett ML, Gordon D, Evans FJ: Isolation from Cannabis sativa L. of cannflavin--a novel inhibitor of prostaglandin production. Biochem Pharmacol. 1985 Jun 1;34(11):2019-24. doi: 10.1016/0006-2952(85)90325-9. [PubMed:3859295 ]
  3. Rea KA, Casaretto JA, Al-Abdul-Wahid MS, Sukumaran A, Geddes-McAlister J, Rothstein SJ, Akhtar TA: Biosynthesis of cannflavins A and B from Cannabis sativa L. Phytochemistry. 2019 Aug;164:162-171. doi: 10.1016/j.phytochem.2019.05.009. Epub 2019 May 28. [PubMed:31151063 ]