Np mrd loader

Record Information
Version2.0
Created at2005-11-16 15:48:42 UTC
Updated at2021-08-09 22:32:53 UTC
NP-MRD IDNP0000285
Secondary Accession NumbersNone
Natural Product Identification
Common Name16a-Hydroxyestrone
Description16A-Hydroxyestrone or 16alpha-hydroxyestrone (16α-OH-E1 or 16a OHE1), or hydroxyestrone, is an endogenous steroidal estrogen and a major metabolite of estrone and estradiol. 16A-hydroxyestrone belongs to the class of organic compounds known as estrogens and derivatives. These are steroids with a structure containing a 3-hydroxylated estrane. Thus, 16a-hydroxyestrone is considered to be a steroid molecule. 16A-hydroxyestrone is found in all vertebrates. Vertebrates, especially mammals, metabolizes estrogen into two major pathways and one minor. The two major pathways lead to 2-hydroxyestrone and 16a-hydroxyestrone (2-OHE1 and 16a OHE1 respectively). The minor pathway leads to 4-hydroxyestrone (4-OHE1). 2A-hydroxyestrone is considered to be the good metabolite (PMID: 8943806 ) As 2-hydroxyestrone does not stimulate cell growth and it blocks the action of stronger estrogens that may be carcinogenic. 16A-Hydroxyestrone, on the other hand, has a significantly stronger estrogenic activity, and studies show that it may increase the risk of breast cancer. The binding of 16a-hydroxyestrone to the estrogen receptor is reported to be covalent and irreversible (PMID: 3186693 ). A low urinary ratio of 2-hydroxyestrone to 16-alpha-hydroxyestrone is a strong predictor of breast cancer risk among women (PMID: 19502596 ).
Structure
Thumb
Synonyms
ValueSource
16 alpha OHEChEBI
16alpha-OHEChEBI
16alpha-OHE1ChEBI
3,16alpha-Dihydroxy-1,3,5(10)-estratrien-17-oneChEBI
3,16alpha-Dihydroxyestra-1,3,5(10)-trien-17-oneChEBI
Estra-1,3,5(10)-triene-3,16alpha-diol-17-oneChEBI
16 a OHEGenerator
16 Α oheGenerator
16a-OHEGenerator
16Α-oheGenerator
16a-OHE1Generator
16Α-ohe1Generator
3,16a-Dihydroxy-1,3,5(10)-estratrien-17-oneGenerator
3,16Α-dihydroxy-1,3,5(10)-estratrien-17-oneGenerator
3,16a-Dihydroxyestra-1,3,5(10)-trien-17-oneGenerator
3,16Α-dihydroxyestra-1,3,5(10)-trien-17-oneGenerator
Estra-1,3,5(10)-triene-3,16a-diol-17-oneGenerator
Estra-1,3,5(10)-triene-3,16α-diol-17-oneGenerator
16 alpha-HydroxyestroneHMDB
3,16a-Dihydroxy-estra-1,3,5(10)-trien-17-oneHMDB
16 beta-HydroxyestroneHMDB
16-alpha-HydroxyestroneHMDB
16-HydroxyestroneHMDB
Chemical FormulaC18H22O3
Average Mass286.3655 Da
Monoisotopic Mass286.15689 Da
IUPAC Name(1S,10R,11S,13R,15S)-5,13-dihydroxy-15-methyltetracyclo[8.7.0.0^{2,7}.0^{11,15}]heptadeca-2(7),3,5-trien-14-one
Traditional Name(1S,10R,11S,13R,15S)-5,13-dihydroxy-15-methyltetracyclo[8.7.0.0^{2,7}.0^{11,15}]heptadeca-2(7),3,5-trien-14-one
CAS Registry Number566-76-7
SMILES
[H][C@@]12C[C@@H](O)C(=O)[C@@]1(C)CC[C@]1([H])C3=C(CC[C@@]21[H])C=C(O)C=C3
InChI Identifier
InChI=1S/C18H22O3/c1-18-7-6-13-12-5-3-11(19)8-10(12)2-4-14(13)15(18)9-16(20)17(18)21/h3,5,8,13-16,19-20H,2,4,6-7,9H2,1H3/t13-,14-,15+,16-,18+/m1/s1
InChI KeyWPOCIZJTELRQMF-QFXBJFAPSA-N
Experimental Spectra
Spectrum TypeDescriptionDepositor EmailDepositor OrganizationDepositorDeposition DateView
1D NMR1H NMR Spectrum (1D, 600 MHz, 100%_DMSO, experimental)Wishart LabWishart LabDavid Wishart2021-06-20View Spectrum
2D NMR[1H, 13C]-HSQC NMR Spectrum (2D, 600 MHz, 100%_DMSO, experimental)Wishart LabWishart LabDavid Wishart2021-06-20View Spectrum
Predicted Spectra
Not Available
Chemical Shift Submissions
Not Available
Species
Species of Origin
Species NameSourceReference
Anas platyrhynchosFooDB
AnatidaeFooDB
Anser anserFooDB
Bison bisonFooDB
Bos taurusFooDB
Bos taurus X Bison bisonFooDB
Bubalus bubalisFooDB
Capra aegagrus hircusFooDB
CervidaeFooDB
Cervus canadensisFooDB
ColumbaFooDB
ColumbidaeFooDB
Dromaius novaehollandiaeFooDB
Equus caballusFooDB
Gallus gallusFooDB
Homo sapiensLOTUS Database
Lagopus mutaFooDB
LeporidaeFooDB
Lepus timidusFooDB
Melanitta fuscaFooDB
Meleagris gallopavoFooDB
Mus musculusLOTUS Database
Numida meleagrisFooDB
OdocoileusFooDB
OryctolagusFooDB
Ovis ariesFooDB
PhasianidaeFooDB
Phasianus colchicusFooDB
Struthio camelusFooDB
Sus scrofaFooDB
Sus scrofa domesticaFooDB
Chemical Taxonomy
Description Belongs to the class of organic compounds known as estrogens and derivatives. These are steroids with a structure containing a 3-hydroxylated estrane.
KingdomOrganic compounds
Super ClassLipids and lipid-like molecules
ClassSteroids and steroid derivatives
Sub ClassEstrane steroids
Direct ParentEstrogens and derivatives
Alternative Parents
Substituents
  • Estrogen-skeleton
  • 3-hydroxysteroid
  • Hydroxysteroid
  • 17-oxosteroid
  • Oxosteroid
  • 16-alpha-hydroxysteroid
  • 16-hydroxysteroid
  • Phenanthrene
  • Tetralin
  • 1-hydroxy-2-unsubstituted benzenoid
  • Benzenoid
  • Cyclic alcohol
  • Secondary alcohol
  • Ketone
  • Carbonyl group
  • Organooxygen compound
  • Alcohol
  • Hydrocarbon derivative
  • Organic oxide
  • Organic oxygen compound
  • Aromatic homopolycyclic compound
Molecular FrameworkAromatic homopolycyclic compounds
External Descriptors
Physical Properties
StateSolid
Experimental Properties
PropertyValueReference
Melting PointNot AvailableNot Available
Boiling PointNot AvailableNot Available
Water SolubilityNot AvailableNot Available
LogPNot AvailableNot Available
Predicted Properties
PropertyValueSource
Water Solubility0.047 g/LALOGPS
logP2.45ALOGPS
logP3.44ChemAxon
logS-3.8ALOGPS
pKa (Strongest Acidic)10.33ChemAxon
pKa (Strongest Basic)-3.5ChemAxon
Physiological Charge0ChemAxon
Hydrogen Acceptor Count3ChemAxon
Hydrogen Donor Count2ChemAxon
Polar Surface Area57.53 ŲChemAxon
Rotatable Bond Count0ChemAxon
Refractivity80.57 m³·mol⁻¹ChemAxon
Polarizability32.06 ųChemAxon
Number of Rings4ChemAxon
BioavailabilityYesChemAxon
Rule of FiveYesChemAxon
Ghose FilterYesChemAxon
Veber's RuleNoChemAxon
MDDR-like RuleNoChemAxon
HMDB IDHMDB0000335
DrugBank IDNot Available
Phenol Explorer Compound IDNot Available
FoodDB IDFDB021959
KNApSAcK IDNot Available
Chemspider ID103012
KEGG Compound IDC05300
BioCyc IDNot Available
BiGG IDNot Available
Wikipedia Link16-Hydroxyestrone
METLIN ID2580
PubChem Compound115116
PDB IDNot Available
ChEBI ID776
Good Scents IDNot Available
References
General References
  1. Khan WA, Zaman GS: Detection of 16alpha-Hydroxyestrone-histone 1 Adduct as High-Affinity Antigen for Rheumatoid Arthritis Autoantibodies. Arch Immunol Ther Exp (Warsz). 2018 Oct;66(5):379-388. doi: 10.1007/s00005-018-0512-z. Epub 2018 Apr 30. [PubMed:29713726 ]
  2. Bucala R, Lahita RG, Fishman J, Cerami A: Anti-oestrogen antibodies in users of oral contraceptives and in patients with systemic lupus erythematosus. Clin Exp Immunol. 1987 Jan;67(1):167-75. [PubMed:3621671 ]
  3. Swaneck GE, Fishman J: Covalent binding of the endogenous estrogen 16 alpha-hydroxyestrone to estradiol receptor in human breast cancer cells: characterization and intranuclear localization. Proc Natl Acad Sci U S A. 1988 Nov;85(21):7831-5. doi: 10.1073/pnas.85.21.7831. [PubMed:3186693 ]
  4. Im A, Vogel VG, Ahrendt G, Lloyd S, Ragin C, Garte S, Taioli E: Urinary estrogen metabolites in women at high risk for breast cancer. Carcinogenesis. 2009 Sep;30(9):1532-5. doi: 10.1093/carcin/bgp139. Epub 2009 Jun 5. [PubMed:19502596 ]