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Record Information
Version2.0
Created at2022-04-27 21:59:26 UTC
Updated at2022-04-27 21:59:26 UTC
NP-MRD IDNP0050623
Secondary Accession NumbersNone
Natural Product Identification
Common Name3',4',5,6,7,8-Hexamethoxyflavone
DescriptionNobiletin belongs to the class of organic compounds known as 8-o-methylated flavonoids. These are flavonoids with methoxy groups attached to the C8 atom of the flavonoid backbone. Thus, nobiletin is considered to be a flavonoid lipid molecule. Nobiletin is a very hydrophobic molecule, practically insoluble (in water), and relatively neutral. Nobiletin is a bitter tasting compound. Outside of the human body, Nobiletin is found, on average, in the highest concentration within sweet oranges. Nobiletin has also been detected, but not quantified in, several different foods, such as citrus, grapefruits, lemons, mandarin orange (clementine, tangerine), and sweet bay. This could make nobiletin a potential biomarker for the consumption of these foods. 3',4',5,6,7,8-Hexamethoxyflavone is found in Actinocephalus polyanthus, Ageratina conyzoides, Ageratum conyzoides , Blumea fistulosa, Blumea glomerata, Citrus aurantium , Citrus deliciosa, Citrus depressa, Citrus hassaku , Fortunella japonica , Citrus kinokuni, Citrus mitis, Citrus myrtifolia, Citrus nobilis , Citrus paradisi, Citrus reticulata, Citrus reticulata tangerine , Citrus sinensis, Citrus spp., Citrus tangerina, Citrus tankan, Citrus unshiu, Citrus sinensis , Eupatorium coelestinum, Conoclinium greggii, Eupatorium leucolepis, Eupatorium leucolepsis, Fortunella margarita , Juncus effusus, Laurus nobilis L. , Oxalis pes-caprae, Ozothamnus lycopodioides, Plenodomus tracheiphilus, Tripterygium wilfordii , Viburnum tinus, Viguiera rosei and Xinhui citrus. 3',4',5,6,7,8-Hexamethoxyflavone was first documented in 2003 (PMID: 12787887). A methoxyflavone that is flavone substituted by methoxy groups at positions 5, 6, 7, 8, 3' and 4' respectively (PMID: 25488359) (PMID: 25845666) (PMID: 20670297) (PMID: 15252145).
Structure
Thumb
Synonyms
ValueSource
5,6,7,8,3',4'-HexamethoxyflavoneChEBI
HexamethoxyflavoneChEBI
2-(3,4-Dimethoxyphenyl)-5,6,7,8-tetramethoxy-4H-1-benzopyran-4-one, 9ciHMDB
Flavone, 5,6,7,8,3',4'-hexamethoxyHMDB
Chemical FormulaC21H22O8
Average Mass402.3946 Da
Monoisotopic Mass402.13147 Da
IUPAC Name2-(3,4-dimethoxyphenyl)-5,6,7,8-tetramethoxy-4H-chromen-4-one
Traditional Namenobiletin
CAS Registry NumberNot Available
SMILES
COC1=CC=C(C=C1OC)C1=CC(=O)C2=C(O1)C(OC)=C(OC)C(OC)=C2OC
InChI Identifier
InChI=1S/C21H22O8/c1-23-13-8-7-11(9-15(13)24-2)14-10-12(22)16-17(25-3)19(26-4)21(28-6)20(27-5)18(16)29-14/h7-10H,1-6H3
InChI KeyMRIAQLRQZPPODS-UHFFFAOYSA-N
Experimental Spectra
Not Available
Predicted Spectra
Not Available
Chemical Shift Submissions
Not Available
Species
Species of Origin
Species NameSourceReference
Actinocephalus polyanthusLOTUS Database
Ageratina conyzoidesPlant
Ageratum conyzoidesPlant
Blumea fistulosaLOTUS Database
Blumea glomerataPlant
Citrus aurantiumPlant
Citrus deliciosaPlant
Citrus depressaLOTUS Database
Citrus hassakuPlant
Citrus japonicaPlant
Citrus kinokuniLOTUS Database
Citrus mitisPlant
Citrus myrtifoliaLOTUS Database
Citrus nobilisPlant
Citrus paradisiLOTUS Database
Citrus reticulataLOTUS Database
Citrus reticulata tangerinePlant
Citrus sinensisLOTUS Database
Citrus spp.Plant
Citrus tangerinaLOTUS Database
Citrus tankanPlant
Citrus unshiuLOTUS Database
Citrus X sinensis (L.) Osbeck (pro. sp.)Plant
Conoclinium coelestinumPlant
Conoclinium greggiiPlant
Eupatorium leucolepisLOTUS Database
Eupatorium leucolepsisPlant
Fortunella margaritaPlant
Juncus effususLOTUS Database
Laurus nobilis L.Plant
Oxalis pes-capraeLOTUS Database
Ozothamnus lycopodioidesPlant
Plenodomus tracheiphilusLOTUS Database
Tripterygium wilfordiiPlant
Viburnum tinusLOTUS Database
Viguiera roseiPlant
Xinhui citrus-
Chemical Taxonomy
Description Belongs to the class of organic compounds known as 8-o-methylated flavonoids. These are flavonoids with methoxy groups attached to the C8 atom of the flavonoid backbone.
KingdomOrganic compounds
Super ClassPhenylpropanoids and polyketides
ClassFlavonoids
Sub ClassO-methylated flavonoids
Direct Parent8-O-methylated flavonoids
Alternative Parents
Substituents
  • 3p-methoxyflavonoid-skeleton
  • 4p-methoxyflavonoid-skeleton
  • 5-methoxyflavonoid-skeleton
  • 6-methoxyflavonoid-skeleton
  • 7-methoxyflavonoid-skeleton
  • 8-methoxyflavonoid-skeleton
  • Flavone
  • Chromone
  • Benzopyran
  • O-dimethoxybenzene
  • Dimethoxybenzene
  • 1-benzopyran
  • Phenoxy compound
  • Anisole
  • Methoxybenzene
  • Phenol ether
  • Alkyl aryl ether
  • Pyranone
  • Monocyclic benzene moiety
  • Pyran
  • Benzenoid
  • Vinylogous ester
  • Heteroaromatic compound
  • Ether
  • Organoheterocyclic compound
  • Oxacycle
  • Organooxygen compound
  • Organic oxide
  • Organic oxygen compound
  • Hydrocarbon derivative
  • 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
logP2.62ALOGPS
logP2.02ChemAxon
logS-4.6ALOGPS
pKa (Strongest Acidic)15.13ChemAxon
pKa (Strongest Basic)-4.1ChemAxon
Physiological Charge0ChemAxon
Hydrogen Acceptor Count8ChemAxon
Hydrogen Donor Count0ChemAxon
Polar Surface Area81.68 ŲChemAxon
Rotatable Bond Count7ChemAxon
Refractivity105.75 m³·mol⁻¹ChemAxon
Polarizability41.79 ųChemAxon
Number of Rings3ChemAxon
BioavailabilityYesChemAxon
Rule of FiveYesChemAxon
Ghose FilterYesChemAxon
Veber's RuleNoChemAxon
MDDR-like RuleYesChemAxon
HMDB IDHMDB0029540
DrugBank IDNot Available
Phenol Explorer Compound ID237
FoodDB IDFDB000683
KNApSAcK IDC00001076
Chemspider ID65283
KEGG Compound IDC10112
BioCyc IDNot Available
BiGG IDNot Available
Wikipedia LinkNobiletin
METLIN IDNot Available
PubChem Compound72344
PDB IDNot Available
ChEBI ID7602
Good Scents IDNot Available
References
General References
  1. Lin N, Sato T, Takayama Y, Mimaki Y, Sashida Y, Yano M, Ito A: Novel anti-inflammatory actions of nobiletin, a citrus polymethoxy flavonoid, on human synovial fibroblasts and mouse macrophages. Biochem Pharmacol. 2003 Jun 15;65(12):2065-71. [PubMed:12787887 ]
  2. Kim HJ, Yonezawa T, Teruya T, Woo JT, Cha BY: Nobiletin, a polymethoxy flavonoid, reduced endothelin-1 plus SCF-induced pigmentation in human melanocytes. Photochem Photobiol. 2015 Mar-Apr;91(2):379-86. doi: 10.1111/php.12400. Epub 2015 Jan 12. [PubMed:25488359 ]
  3. Chen J, Chen AY, Huang H, Ye X, Rollyson WD, Perry HE, Brown KC, Rojanasakul Y, Rankin GO, Dasgupta P, Chen YC: The flavonoid nobiletin inhibits tumor growth and angiogenesis of ovarian cancers via the Akt pathway. Int J Oncol. 2015;46(6):2629-38. doi: 10.3892/ijo.2015.2946. Epub 2015 Apr 1. [PubMed:25845666 ]
  4. Kunimasa K, Ikekita M, Sato M, Ohta T, Yamori Y, Ikeda M, Kuranuki S, Oikawa T: Nobiletin, a citrus polymethoxyflavonoid, suppresses multiple angiogenesis-related endothelial cell functions and angiogenesis in vivo. Cancer Sci. 2010 Nov;101(11):2462-9. doi: 10.1111/j.1349-7006.2010.01668.x. [PubMed:20670297 ]
  5. Miyata Y, Sato T, Yano M, Ito A: Activation of protein kinase C betaII/epsilon-c-Jun NH2-terminal kinase pathway and inhibition of mitogen-activated protein/extracellular signal-regulated kinase 1/2 phosphorylation in antitumor invasive activity induced by the polymethoxy flavonoid, nobiletin. Mol Cancer Ther. 2004 Jul;3(7):839-47. [PubMed:15252145 ]