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Record Information
Version2.0
Created at2022-05-30 16:38:27 UTC
Updated at2022-05-30 16:38:27 UTC
NP-MRD IDNP0136995
Secondary Accession NumbersNone
Natural Product Identification
Common NameIsosilybin
DescriptionIsosilybin belongs to the class of organic compounds known as flavonolignans. These are non-conventional lignans that derived from flavonoids. They are characterized by a p-dioxin ring substituted at one carbon atom by a C3C6 (phenylpropan) group and fused to the B-ring of the 2-phenylchromene moiety. Isosilybin is an extremely weak basic (essentially neutral) compound (based on its pKa). Outside of the human body, Isosilybin has been detected, but not quantified in, coffee and coffee products and green vegetables. Isosilybin is found in Anastatica hierochuntica and Silybum marianum. Isosilybin was first documented in 2007 (PMID: 17389612). This could make isosilybin a potential biomarker for the consumption of these foods (PMID: 18332867) (PMID: 20721970).
Structure
Thumb
Synonyms
ValueSource
IsosilybinMeSH
Chemical FormulaC25H22O10
Average Mass482.4362 Da
Monoisotopic Mass482.12130 Da
IUPAC Name3,5,7-trihydroxy-2-[2-(4-hydroxy-3-methoxyphenyl)-3-(hydroxymethyl)-2,3-dihydro-1,4-benzodioxin-6-yl]-3,4-dihydro-2H-1-benzopyran-4-one
Traditional Name3,5,7-trihydroxy-2-[2-(4-hydroxy-3-methoxyphenyl)-3-(hydroxymethyl)-2,3-dihydro-1,4-benzodioxin-6-yl]-2,3-dihydro-1-benzopyran-4-one
CAS Registry NumberNot Available
SMILES
COC1=CC(=CC=C1O)C1OC2=C(OC1CO)C=C(C=C2)C1OC2=C(C(O)=CC(O)=C2)C(=O)C1O
InChI Identifier
InChI=1S/C25H22O10/c1-32-17-6-11(2-4-14(17)28)24-20(10-26)33-18-7-12(3-5-16(18)34-24)25-23(31)22(30)21-15(29)8-13(27)9-19(21)35-25/h2-9,20,23-29,31H,10H2,1H3
InChI KeyFDQAOULAVFHKBX-UHFFFAOYSA-N
Experimental Spectra
Not Available
Predicted Spectra
Spectrum TypeDescriptionDepositor IDDepositor OrganizationDepositorDeposition DateView
1D NMR13C NMR Spectrum (1D, 25 MHz, H2O, predicted)Wishart LabWishart LabDavid Wishart2021-06-20View Spectrum
1D NMR1H NMR Spectrum (1D, 100 MHz, H2O, predicted)Wishart LabWishart LabDavid Wishart2021-06-20View Spectrum
1D NMR13C NMR Spectrum (1D, 252 MHz, H2O, predicted)Wishart LabWishart LabDavid Wishart2021-06-20View Spectrum
1D NMR1H NMR Spectrum (1D, 1000 MHz, H2O, predicted)Wishart LabWishart LabDavid Wishart2021-06-20View Spectrum
1D NMR13C NMR Spectrum (1D, 50 MHz, H2O, predicted)Wishart LabWishart LabDavid Wishart2021-06-20View Spectrum
1D NMR1H NMR Spectrum (1D, 200 MHz, H2O, predicted)Wishart LabWishart LabDavid Wishart2021-06-20View Spectrum
1D NMR13C NMR Spectrum (1D, 75 MHz, H2O, predicted)Wishart LabWishart LabDavid Wishart2021-06-20View Spectrum
1D NMR1H NMR Spectrum (1D, 300 MHz, H2O, predicted)Wishart LabWishart LabDavid Wishart2021-06-20View Spectrum
1D NMR13C NMR Spectrum (1D, 101 MHz, H2O, predicted)Wishart LabWishart LabDavid Wishart2021-06-20View Spectrum
1D NMR1H NMR Spectrum (1D, 400 MHz, H2O, predicted)Wishart LabWishart LabDavid Wishart2021-06-20View Spectrum
1D NMR13C NMR Spectrum (1D, 126 MHz, H2O, predicted)Wishart LabWishart LabDavid Wishart2021-06-20View Spectrum
1D NMR1H NMR Spectrum (1D, 500 MHz, H2O, predicted)Wishart LabWishart LabDavid Wishart2021-06-20View Spectrum
1D NMR13C NMR Spectrum (1D, 151 MHz, H2O, predicted)Wishart LabWishart LabDavid Wishart2021-06-20View Spectrum
1D NMR1H NMR Spectrum (1D, 600 MHz, H2O, predicted)Wishart LabWishart LabDavid Wishart2021-06-20View Spectrum
1D NMR13C NMR Spectrum (1D, 176 MHz, H2O, predicted)Wishart LabWishart LabDavid Wishart2021-06-20View Spectrum
1D NMR1H NMR Spectrum (1D, 700 MHz, H2O, predicted)Wishart LabWishart LabDavid Wishart2021-06-20View Spectrum
1D NMR13C NMR Spectrum (1D, 201 MHz, H2O, predicted)Wishart LabWishart LabDavid Wishart2021-06-20View Spectrum
1D NMR1H NMR Spectrum (1D, 800 MHz, H2O, predicted)Wishart LabWishart LabDavid Wishart2021-06-20View Spectrum
1D NMR13C NMR Spectrum (1D, 226 MHz, H2O, predicted)Wishart LabWishart LabDavid Wishart2021-06-20View Spectrum
1D NMR1H NMR Spectrum (1D, 900 MHz, H2O, predicted)Wishart LabWishart LabDavid Wishart2021-06-20View Spectrum
Chemical Shift Submissions
Not Available
Species
Species of Origin
Species NameSourceReference
Anastatica hierochunticaLOTUS Database
Silybum marianumLOTUS Database
Chemical Taxonomy
Description Belongs to the class of organic compounds known as flavonolignans. These are non-conventional lignans that derived from flavonoids. They are characterized by a p-dioxin ring substituted at one carbon atom by a C3C6 (phenylpropan) group and fused to the B-ring of the 2-phenylchromene moiety.
KingdomOrganic compounds
Super ClassLignans, neolignans and related compounds
ClassFlavonolignans
Sub ClassNot Available
Direct ParentFlavonolignans
Alternative Parents
Substituents
  • Flavonolignan
  • Hydroxyflavonoid
  • 3-hydroxyflavonoid
  • Flavanonol
  • Flavanone
  • 7-hydroxyflavonoid
  • 5-hydroxyflavonoid
  • Flavan
  • Phenylbenzodioxane
  • 2-phenylbenzo-1,4-dioxane
  • Chromone
  • 1-benzopyran
  • Methoxyphenol
  • Benzopyran
  • Chromane
  • Benzodioxane
  • Benzo-1,4-dioxane
  • Phenoxy compound
  • Anisole
  • Methoxybenzene
  • Aryl alkyl ketone
  • Aryl ketone
  • Phenol ether
  • Alkyl aryl ether
  • 1-hydroxy-2-unsubstituted benzenoid
  • Phenol
  • 1-hydroxy-4-unsubstituted benzenoid
  • Benzenoid
  • Para-dioxin
  • Monocyclic benzene moiety
  • Vinylogous acid
  • Secondary alcohol
  • Ketone
  • Polyol
  • Organoheterocyclic compound
  • Ether
  • Oxacycle
  • Alcohol
  • Organooxygen compound
  • Organic oxygen compound
  • Organic oxide
  • Hydrocarbon derivative
  • Primary alcohol
  • Aromatic heteropolycyclic compound
Molecular FrameworkAromatic heteropolycyclic compounds
External DescriptorsNot Available
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
logP2.35ALOGPS
logP2.63ChemAxon
logS-3.7ALOGPS
pKa (Strongest Acidic)7.81ChemAxon
pKa (Strongest Basic)-3ChemAxon
Physiological Charge0ChemAxon
Hydrogen Acceptor Count10ChemAxon
Hydrogen Donor Count5ChemAxon
Polar Surface Area155.14 ŲChemAxon
Rotatable Bond Count4ChemAxon
Refractivity120.29 m³·mol⁻¹ChemAxon
Polarizability48.51 ųChemAxon
Number of Rings5ChemAxon
BioavailabilityYesChemAxon
Rule of FiveYesChemAxon
Ghose FilterNoChemAxon
Veber's RuleNoChemAxon
MDDR-like RuleNoChemAxon
HMDB IDHMDB0033322
DrugBank IDNot Available
Phenol Explorer Compound IDNot Available
FoodDB IDFDB011349
KNApSAcK IDC00008662
Chemspider ID2342610
KEGG Compound IDC16808
BioCyc IDNot Available
BiGG IDNot Available
Wikipedia LinkNot Available
METLIN IDNot Available
PubChem Compound3085830
PDB IDNot Available
ChEBI IDNot Available
Good Scents IDNot Available
References
General References
  1. Deep G, Oberlies NH, Kroll DJ, Agarwal R: Isosilybin B and isosilybin A inhibit growth, induce G1 arrest and cause apoptosis in human prostate cancer LNCaP and 22Rv1 cells. Carcinogenesis. 2007 Jul;28(7):1533-42. doi: 10.1093/carcin/bgm069. Epub 2007 Mar 26. [PubMed:17389612 ]
  2. Deep G, Oberlies NH, Kroll DJ, Agarwal R: Isosilybin B causes androgen receptor degradation in human prostate carcinoma cells via PI3K-Akt-Mdm2-mediated pathway. Oncogene. 2008 Jun 26;27(28):3986-98. doi: 10.1038/onc.2008.45. Epub 2008 Mar 10. [PubMed:18332867 ]
  3. Deep G, Gangar SC, Oberlies NH, Kroll DJ, Agarwal R: Isosilybin A induces apoptosis in human prostate cancer cells via targeting Akt, NF-kappaB, and androgen receptor signaling. Mol Carcinog. 2010 Oct;49(10):902-12. doi: 10.1002/mc.20670. [PubMed:20721970 ]