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16-Ketoestrone

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16-Ketoestrone
Names

IUPAC name 3-Hydroxyestra-1,3,5(10)-triene-16,17-dione
Systematic IUPAC name (3aS,3bR,9bS,11aS)-7-Hydroxy-11a-methyl-3a,3b,4,5,9b,10,11,11a-octahydro-1H-cyclopenta[a]phenanthrene-1,2(3H)-dione
Other names 16-Oxoestrone; 16-Keto-E1; 16-Oxo-E1; NSC-60462
Identifiers
CAS Number	1228-73-5
3D model (JSmol)	Interactive image
ChEBI	CHEBI:34166
ChemSpider	216072
KEGG	C14441
PubChem CID	246876
UNII	113V416QTU
CompTox Dashboard(EPA)	DTXSID701261036
InChI InChI=1S/C18H20O3/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/h3,5,8,13-15,19H,2,4,6-7,9H2,1H3/t13-,14-,15+,18+/m1/s1 Key: ANPHVANSJXDRTP-BSXFFOKHSA-N
SMILES C[C@]12CC[C@H]3[C@H]([C@@H]1CC(=O)C2=O)CCC4=C3C=CC(=C4)O
Properties
Chemical formula	C₁₈H₂₀O₃
Molar mass	284.355 g·mol⁻¹
Except where otherwise noted, data are given for materials in theirstandard state (at 25 °C [77 °F], 100 kPa). Infobox references

Chemical compound

16-Ketoestrone (16-keto-E1, or16-oxoestrone, or16-oxo-E1) is anendogenous estrogen related to16α-hydroxyestrone and16β-hydroxyestrone.^[1]^[2]^[3] In contrast to 16α-hydroxyestrone and 16β-hydroxyestrone, but similarly to16-ketoestradiol, 16-ketoestrone is a very weak estrogen with less than 1/1000 theestrogenic potency ofestrone in theuterus.^[3] 16-Ketoestrone has been reported to act as aninhibitor of17β-hydroxysteroid dehydrogenases.^[4] 16-Ketoestrone can be converted by16α-hydroxysteroid dehydrogenase intoestriol in the body.^[1]^[5]

References

[edit]

^^a ^bBreuer, Heinz (1962). "The Metabolism of the Natural Estrogens".Vitamins & Hormones.20:285–335.doi:10.1016/S0083-6729(08)60720-7.ISBN 9780127098203.ISSN 0083-6729.
^Huffman MN, Lott MH (January 1948)."16-Substituted steroids; 16-keto-alpha-estradiol and 16-ketoestrone".J. Biol. Chem.172 (1):325–32.doi:10.1016/S0021-9258(18)35637-0.PMID 18920793.
^^a ^bHuggins C, Jensen EV (September 1955)."The depression of estrone-induced uterine growth by phenolic estrogens with oxygenated functions at positions 6 or 16: the impeded estrogens".J. Exp. Med.102 (3):335–46.doi:10.1084/jem.102.3.335.PMC 2136510.PMID 13252187.
^Inano H, Tamaoki B (January 1983)."Affinity labeling of arginyl residues at the catalytic region of estradiol 17 beta-dehydrogenase from human placenta by 16-oxoestrone".Eur. J. Biochem.129 (3):691–5.doi:10.1111/j.1432-1033.1983.tb07104.x.PMID 6572146.
^Stimmel BF, Grollman A, Huffman MN (June 1950)."The metabolism of 16-ketoestrone and 16-keto-estradiol in man".J. Biol. Chem.184 (2):677–85.doi:10.1016/S0021-9258(19)51001-8.PMID 15428451.

Endogenous steroids

Precursors

Corticosteroids

Glucocorticoids	3α,5α-Tetrahydrocorticosterone 5α-Dihydrocorticosterone 11-Deoxycorticosterone 11-Deoxycortisol 11-Ketoprogesterone 21-Deoxycortisol 21-Deoxycortisone Corticosterone Cortisol Cortisone 17α-Hydroxypregnenolone 17α-Hydroxyprogesterone Pregnenolone Progesterone Metabolites:5α-Dihydrocortisol 3α,5α-Tetrahydrocortisol
Mineralocorticoids	5α-Dihydroaldosterone 11-Dehydrocorticosterone (11-oxocorticosterone, 17-deoxycortisone) 11-Deoxycortisol 11-Deoxycorticosterone 11β-Hydroxyprogesterone (21-deoxycorticosterone) 18-Hydroxy-11-deoxycorticosterone 18-Hydroxycorticosterone 18-Hydroxyprogesterone Aldosterone Corticosterone Cortisol

Sex steroids

Androgens	11-Ketodihydrotestosterone 11-Ketotestosterone 7β-Hydroxyepiandrosterone 11β-Hydroxyandrostenedione Adrenosterone (11-ketoandrostenedione) Androstenediol Androstenedione Androsterone Dehydroandrosterone DHEA DHEA sulfate Dihydrotestosterone Epiandrosterone Epitestosterone 16α-Hydroxyandrostenedione 16α-Hydroxy-DHEA 16α-Hydroxy-DHEA sulfate Testosterone Metabolites:3α-Androstanediol 3α-Androstanediol glucuronide 3β-Androstanediol 5β-Dihydrotestosterone 3α-Etiocholanediol 3β-Etiocholanediol Androstanetriols Androstenediol sulfate Androstenetriol Androsterone glucuronide Androsterone sulfate Dihydrotestosterone glucuronide Dihydrotestosterone sulfate Etiocholanedione Etiocholanolone Etiocholanolone glucuronide Epietiocholanolone Testosterone glucuronide Testosterone sulfate
Estrogens	Estranes:Estetrol Estradiol Estrone Estriol 17α-Estradiol 16β-Epiestriol (16β-hydroxyestradiol) 17α-Epiestriol (16α-hydroxy-17α-estradiol) 16β,17α-Epiestriol (16β-hydroxy-17α-estradiol) 2-Hydroxyestradiol 2-Hydroxyestriol 2-Hydroxyestrone 4-Hydroxyestradiol 4-Hydroxyestriol 4-Hydroxyestrone 4-Methoxyestradiol 4-Methoxyestrone 16α-Hydroxyestrone 16β-Hydroxyestrone 16-Ketoestradiol 16-Ketoestrone Others:27-Hydroxycholesterol 3α-Androstanediol 3β-Androstanediol 4-Androstenedione 5-Androstenediol DHEA DHEA sulfate 7-Keto-DHEA 7α-Hydroxy-DHEA 16α-Hydroxy-DHEA Metabolites:2-Methoxyestradiol 2-Methoxyestrone 2-Methoxyestriol 4-Methoxyestriol Estradiol disulfate Estradiol glucuronide Estradiol 3-glucuronide Estradiol 3-glucuronide 17β-sulfate Estradiol sulfate Estradiol 17β-sulfate Estrone glucuronide Estrone sulfate Estriol glucuronide Estriol sulfate Lipoidal estradiol (e.g.,estradiol stearate,estradiol palmitate)
Progestogens	Progesterone 16α-Hydroxyprogesterone 17α-Hydroxyprogesterone 20α-Dihydroprogesterone 20β-Dihydroprogesterone 5α-Dihydroprogesterone 11-Deoxycorticosterone 5α-DHDOC Metabolites:Allopregnanediol Pregnanediol Pregnanediol glucuronide Pregnanetriol

Neurosteroids

Cholestanes:24S-Hydroxycholesterol
Cholesterol

Others

Estrogen receptor modulators

ERTooltip Estrogen receptor

Agonists	Steroidal:2-Hydroxyestradiol 2-Hydroxyestrone 3-Methyl-19-methyleneandrosta-3,5-dien-17β-ol 3α-Androstanediol 3α,5α-Dihydrolevonorgestrel 3β,5α-Dihydrolevonorgestrel 3α-Hydroxytibolone 3β-Hydroxytibolone 3β-Androstanediol 4-Androstenediol 4-Androstenedione 4-Fluoroestradiol 4-Hydroxyestradiol 4-Hydroxyestrone 4-Methoxyestradiol 4-Methoxyestrone 5-Androstenediol 7-Oxo-DHEA 7α-Hydroxy-DHEA 7α-Methylestradiol 7β-Hydroxyepiandrosterone 8,9-Dehydroestradiol 8,9-Dehydroestrone 8β-VE2 10β,17β-Dihydroxyestra-1,4-dien-3-one (DHED) 11β-Chloromethylestradiol 11β-Methoxyestradiol 15α-Hydroxyestradiol 16-Ketoestradiol 16-Ketoestrone 16α-Fluoroestradiol 16α-Hydroxy-DHEA 16α-Hydroxyestrone 16α-Iodoestradiol 16α-LE2 16β-Hydroxyestrone 16β,17α-Epiestriol (16β-hydroxy-17α-estradiol) 17α-Estradiol (alfatradiol) 17α-Dihydroequilenin 17α-Dihydroequilin 17α-Epiestriol (16α-hydroxy-17α-estradiol) 17α-Ethynyl-3α-androstanediol 17α-Ethynyl-3β-androstanediol 17β-Dihydroequilenin 17β-Dihydroequilin 17β-Methyl-17α-dihydroequilenin Abiraterone Abiraterone acetate Alestramustine Almestrone Anabolic steroids (e.g.,testosterone andesters,methyltestosterone,metandienone (methandrostenolone),nandrolone andesters, many others; via estrogenic metabolites) Atrimustine Bolandiol Bolandiol dipropionate Butolame Clomestrone Cloxestradiol Cloxestradiol acetate Conjugated estriol Conjugated estrogens Cyclodiol Cyclotriol DHEA DHEA-S ent-Estradiol Epiestriol (16β-epiestriol, 16β-hydroxy-17β-estradiol) Epimestrol Equilenin Equilin ERA-63 (ORG-37663) Esterified estrogens Estetrol Estradiol Estradiol esters Lipoidal estradiol Polyestradiol phosphate Estramustine Estramustine phosphate Estrapronicate Estrazinol Estriol Estriol esters Polyestriol phosphate Estrofurate Estrogenic substances Estromustine Estrone Estrone esters Estrone methyl ether Estropipate Etamestrol (eptamestrol) Ethinylandrostenediol Ethandrostate Ethinylestradiol Ethinylestradiol 3-benzoate Ethinylestradiol sulfonate Ethinylestriol Ethylestradiol Etynodiol Etynodiol diacetate Hexolame Hippulin Hydroxyestrone diacetate Lynestrenol Lynestrenol phenylpropionate Mestranol Methylestradiol Moxestrol Mytatrienediol Nilestriol Norethisterone Noretynodrel Orestrate Pentolame Prodiame Prolame Promestriene RU-16117 Quinestradol Quinestrol Tibolone Nonsteroidal:(R,R)-THC (S,S)-THC 2,8-DHHHC β-LGND1 β-LGND2 (GTx-878) AC-186 Allenestrol Allenolic acid Benzestrol Bifluranol Bisdehydrodoisynolic acid Butestrol Carbestrol D-15414 DCW234 Diarylpropionitrile Dienestrol Dienestrol diacetate Diethylstilbestrol Diethylstilbestrol esters Dimestrol (dianisylhexene) Dimethylstilbestrol Doisynoestrol (fenocycline) Doisynolic acid Efavirenz Elacestrant ERB-196 (WAY-202196) Erteberel (SERBA-1, LY-500307) Estrobin (DBE) Fenestrel FERb 033 Fosfestrol (diethylstilbestrol diphosphate) Furostilbestrol (diethylstilbestrol difuroate) GTx-758 Hexestrol Hexestrol esters ICI-85966 (Stilbostat) M2613 meso-Butestrol meso-Hexestrol Mestilbol Methallenestril Methestrol Methestrol dipropionate Paroxypropione Pentafluranol Phenestrol Prinaberel (ERB-041, WAY-202041) Propylpyrazoletriol Quadrosilan SC-3296 SC-4289 SERBA-2 SKF-82,958 Terfluranol Triphenylbromoethylene Triphenylchloroethylene Triphenyliodoethylene Triphenylmethylethylene (triphenylpropene) WAY-166818 WAY-169916 WAY-200070 WAY-204688 (SIM-688) WAY-214156 Unknown/unsorted:ERB-26 ERA-45 ERB-79 ZK-283197 Xenoestrogens:Anise-related (e.g.,anethole,anol,dianethole,dianol,photoanethole) Chalconoids (e.g.,isoliquiritigenin,phloretin,phlorizin (phloridzin),wedelolactone) Coumestans (e.g.,coumestrol,psoralidin) Flavonoids (incl.7,8-DHF,8-prenylnaringenin,apigenin,baicalein,baicalin,biochanin A,calycosin,catechin,daidzein,daidzin,ECG,EGCG,epicatechin,equol,formononetin,glabrene,glabridin,genistein,genistin,glycitein,kaempferol,liquiritigenin,mirificin,myricetin,naringenin,penduletin,pinocembrin,prunetin,puerarin,quercetin,tectoridin,tectorigenin) Lavender oil Lignans (e.g.,enterodiol,enterolactone,nyasol (cis-hinokiresinol)) Metalloestrogens (e.g.,cadmium) Pesticides (e.g.,alternariol,dieldrin,endosulfan,fenarimol,HPTE,methiocarb,methoxychlor,triclocarban,triclosan) Phytosteroids (e.g.,digitoxin (digitalis),diosgenin,guggulsterone) Phytosterols (e.g.,β-sitosterol,campesterol,stigmasterol) Resorcylic acid lactones (e.g.,zearalanone,α-zearalenol,β-zearalenol,zearalenone,zeranol (α-zearalanol),taleranol (teranol, β-zearalanol)) Steroid-like (e.g.,deoxymiroestrol,miroestrol) Stilbenoids (e.g.,resveratrol,rhaponticin) Synthetic xenoestrogens (e.g.,alkylphenols,bisphenols (e.g.,BPA,BPF,BPS),DDT,parabens,PBBs,PHBA,phthalates,PCBs) Others (e.g.,agnuside,rotundifuran)
Mixed (SERMsTooltip Selective estrogen receptor modulators)	2-Phenylbenzofuran 2-Phenylbenzothiophene 4'-Hydroxynorendoxifen 27-Hydroxycholesterol Acefluranol Acolbifene Afimoxifene Anordiol Anordrin Arzoxifene Bazedoxifene Brilanestrant Broparestrol Camizestrant Chlorotrianisene Clomifene Clomifenoxide CN-55945-27 Cyclofenil D-15413 Desmethylchlorotrianisene Droloxifene Enclomifene Endoxifen Etacstil (GW-5638, DPC-974) Ethamoxytriphetol (MER-25) Femarelle Fispemifene GW-7604 ICI-55548 Idoxifene Lasofoxifene Levormeloxifene LN-1643 LN-2299 LY-117018 Menerba Miproxifene Miproxifene phosphate MRL-37 Nafoxidine Nitromifene NNC 45-0095 NNC 45-0320 NNC 45-0781 NNC 45-1506 Ormeloxifene Ospemifene Panomifene Pipendoxifene Promensil Raloxifene Rimostil (P-081) Spironolactone SS1010 Tamoxifen TAS-108 (SR-16234) Toremifene Trioxifene TZE-5323 U-11555A U-11634 Y-134 Zindoxifene Zuclomifene
Antagonists	(R,R)-THC 7β-Hydroxy-DHEA Chloroindazole Cytestrol acetate EM-800 (SCH-57050) Epitiostanol ERA-90 ERB-88 Fulvestrant (ICI-182780) Glyceollins (I,II,III,IV) ICI-164384 MDL-101906 Mepitiostane Methylepitiostanol Methylpiperidinopyrazole MIBE Oxabicycloheptene sulfonate Phenytoin PHTPP Prochloraz RU-39411 RU-58668 SS1020 TAS-108 (SR-16234) ZB716 ZK-164015 ZK-191703 Coregulator-binding modulators:ERX-11 Noncompetitive inhibitors:Trilostane

GPERTooltip G protein-coupled estrogen receptor

Agonists	2-Methoxyestradiol 7β-Hydroxyepiandrosterone Afimoxifene (4-hydroxytamoxifen) Aldosterone Atrazine Bisphenol A Daidzein DDT (p,p'-DDT,o',p'-DDE) Diarylpropionitrile Equol Estradiol Ethinylestradiol Fulvestrant (ICI-182780) G-1 Genistein GPER-L1 GPER-L2 Hydroxytyrosol Kepone Nicotinic acid Nicotinamide Nonylphenol Oleuropein PCBs (2,2',5'-PCB-4-OH) Propylpyrazoletriol Quercetin Raloxifene Resveratrol STX Tamoxifen Tectoridin
Antagonists	CCL18 Estriol G-15 G-36 MIBE
Unknown	Diethylstilbestrol Zearalenone

See also: Receptor/signaling modulators; Estrogens and antiestrogens; Androgen receptor modulators; Progesterone receptor modulators; List of estrogens

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