Almestrone

Chemical compound

None

Identifiers

IUPAC name

(7R,8R,9S,13S,14S)-3-hydroxy-7,13-dimethyl-7,8,9,11,12,14,15,16-octahydro-6H-cyclopenta[a]phenanthren-17-one

CAS Number

10448-96-1

PubChem CID

65601

ChemSpider

59042

UNII

N18A31MTB0

ChEMBL

ChEMBL2104052

CompTox Dashboard (EPA)

DTXSID001016949

ECHA InfoCard100.212.018

Chemical and physical dataFormulaC₁₉H₂₄O₂Molar mass284.399 g·mol⁻¹3D model (JSmol)

Interactive image

SMILES

CC1CC2=C(C=CC(=C2)O)C3C1C4CCC(=O)C4(CC3)C

InChI

InChI=InChI=1S/C19H24O2/c1-11-9-12-10-13(20)3-4-14(12)15-7-8-19(2)16(18(11)15)5-6-17(19)21/h3-4,10-11,15-16,18,20H,5-9H2,1-2H3/t11-,15-,16+,18-,19+/m1/s1
Key:JUAJXSMWFOFDFC-MNHDCVOLSA-N

Almestrone (INNTooltip International Nonproprietary Name) (developmental code names Ba 38372, Ciba 38372), also known as 7α-methylestrone, is a synthetic, steroidal estrogen which was synthesized in 1967 but was never marketed.^[1] It is used as a precursor in the synthesis of several highly active steroids.^[2]^[3]

References

^ Elks J (14 November 2014). The Dictionary of Drugs: Chemical Data: Chemical Data, Structures and Bibliographies. Springer. pp. 900–. ISBN 978-1-4757-2085-3.
^ Krause N, Aksin-Artok Ö (2011). "Copper-Mediated and Copper-Catalyzed Addition and Substitution Reactions of Extended Multiple Bond Systems". PATai's Chemistry of Functional Groups. doi:10.1002/9780470682531.pat0450. ISBN 9780470682531.
^ Morais GR, Yoshioka N, Watanabe M, Mataka S, Oliveira CD, Thiemann T (2006). "C7-Substituted Estranes and Related Steroids". Mini-Reviews in Organic Chemistry. 3 (3): 229–251. doi:10.2174/1570193X10603030229. ISSN 1570-193X.

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 and esters, methyltestosterone, metandienone (methandrostenolone), nandrolone and esters, 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 Niacin Niacinamide 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