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Record Information
Version2.0
Created at2022-04-27 23:27:03 UTC
Updated at2022-04-27 23:27:03 UTC
NP-MRD IDNP0052380
Secondary Accession NumbersNone
Natural Product Identification
Common Name4',5-Dihydroxy-7-methoxy-6,8-dimethylflavone
DescriptionSideroxylin belongs to the class of organic compounds known as 7-o-methylated flavonoids. These are flavonoids with methoxy groups attached to the C7 atom of the flavonoid backbone. Thus, sideroxylin is considered to be a flavonoid lipid molecule. Sideroxylin is a very hydrophobic molecule, practically insoluble (in water), and relatively neutral. 4',5-Dihydroxy-7-methoxy-6,8-dimethylflavone is found in Callistemon citrinus, Callistemon juniperinus, Callistemon rigidus, Callistemon salignus, Callistemon salignus var.viridiflorus, Callistemon speciosus, Callistemon spp. , Eucalyptus globulus, Eucalyptus robusta, Eucalyptus saligna , Eucalyptus sideroxylon, Eucalyptus tereticornis, Hydrastis canadensis, Kalmia latifolia , Leptospermum laevigatum and Myrtus communis. 4',5-Dihydroxy-7-methoxy-6,8-dimethylflavone was first documented in 2011 (PMID: 21661731). A monomethoxyflavone that is flavone substituted by a methoxy group at position 7, hydroxy groups at positions 5 and 4' and methyl groups at positions 6 and 8.
Structure
Thumb
Synonyms
ValueSource
4',5-Dihydroxy-7-methoxy-6,8-dimethylflavoneChEBI
IsosideroxylinMeSH
Chemical FormulaC18H16O5
Average Mass312.3210 Da
Monoisotopic Mass312.09977 Da
IUPAC Name5-hydroxy-2-(4-hydroxyphenyl)-7-methoxy-6,8-dimethyl-4H-chromen-4-one
Traditional Namesideroxylin
CAS Registry NumberNot Available
SMILES
COC1=C(C)C(O)=C2C(=O)C=C(OC2=C1C)C1=CC=C(O)C=C1
InChI Identifier
InChI=1S/C18H16O5/c1-9-16(21)15-13(20)8-14(11-4-6-12(19)7-5-11)23-18(15)10(2)17(9)22-3/h4-8,19,21H,1-3H3
InChI KeyQJSQOGJCHBXLAH-UHFFFAOYSA-N
Experimental Spectra
Not Available
Predicted Spectra
Chemical Shift Submissions
Not Available
Species
Species of Origin
Chemical Taxonomy
Description Belongs to the class of organic compounds known as 7-o-methylated flavonoids. These are flavonoids with methoxy groups attached to the C7 atom of the flavonoid backbone.
KingdomOrganic compounds
Super ClassPhenylpropanoids and polyketides
ClassFlavonoids
Sub ClassO-methylated flavonoids
Direct Parent7-O-methylated flavonoids
Alternative Parents
Substituents
  • 7-methoxyflavonoid-skeleton
  • 4'-hydroxyflavonoid
  • 5-hydroxyflavonoid
  • Flavone
  • Hydroxyflavonoid
  • Chromone
  • Benzopyran
  • 1-benzopyran
  • Anisole
  • 1-hydroxy-2-unsubstituted benzenoid
  • Alkyl aryl ether
  • Pyranone
  • Phenol
  • Monocyclic benzene moiety
  • Benzenoid
  • Pyran
  • Vinylogous acid
  • Heteroaromatic compound
  • Ether
  • Organoheterocyclic compound
  • Oxacycle
  • Organic oxygen compound
  • Organic oxide
  • Hydrocarbon derivative
  • Organooxygen 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
logP3.61ALOGPS
logP3.88ChemAxon
logS-4.1ALOGPS
pKa (Strongest Acidic)8.12ChemAxon
pKa (Strongest Basic)-4.7ChemAxon
Physiological Charge0ChemAxon
Hydrogen Acceptor Count5ChemAxon
Hydrogen Donor Count2ChemAxon
Polar Surface Area75.99 ŲChemAxon
Rotatable Bond Count2ChemAxon
Refractivity87.48 m³·mol⁻¹ChemAxon
Polarizability32.92 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 CompoundNot Available
PDB IDNot Available
ChEBI ID69916
Good Scents IDNot Available
References
General References
  1. Junio HA, Sy-Cordero AA, Ettefagh KA, Burns JT, Micko KT, Graf TN, Richter SJ, Cannon RE, Oberlies NH, Cech NB: Synergy-directed fractionation of botanical medicines: a case study with goldenseal (Hydrastis canadensis). J Nat Prod. 2011 Jul 22;74(7):1621-9. doi: 10.1021/np200336g. Epub 2011 Jun 10. [PubMed:21661731 ]