Afimoxifene

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Afimoxifene

IUPAC name (Z)-4-(1-(4-(2-(dimethylamino)ethoxy)phenyl)-2-phenylbut-1-enyl)phenol
Other names 4-hydroxytamoxifen
Identifiers
CAS number	68392-35-8^Y
PubChem	449459
ChemSpider	395987^Y
KEGG	D06551^Y
ChEMBL	CHEMBL489^Y
Jmol-3D images	Image 1 Image 2
SMILES CC\C(c1ccccc1)=C(c2ccc(OCCN(C)C)cc2)/c3ccc(O)cc3 O(c1ccc(cc1)/C(c2ccc(O)cc2)=C(\c3ccccc3)CC)CCN(C)C
InChI InChI=1S/C26H29NO2/c1-4-25(20-8-6-5-7-9-20)26(21-10-14-23(28)15-11-21)22-12-16-24(17-13-22)29-19-18-27(2)3/h5-17,28H,4,18-19H2,1-3H3/b26-25-^Y Key: TXUZVZSFRXZGTL-QPLCGJKRSA-N^Y InChI=1/C26H29NO2/c1-4-25(20-8-6-5-7-9-20)26(21-10-14-23(28)15-11-21)22-12-16-24(17-13-22)29-19-18-27(2)3/h5-17,28H,4,18-19H2,1-3H3/b26-25- Key: TXUZVZSFRXZGTL-QPLCGJKRBX
Properties
Molecular formula	C₂₆H₂₉NO₂
Molar mass	387.51396
Y (verify) (what is: Y/N?) Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa)
Infobox references

Afimoxifene^[1] (4-hydroxytamoxifen) is a selective estrogen receptor modulator which is the active metabolite of tamoxifen.^[2] Afimoxifene is a transdermal gel formulation and is being developed by Ascend Therapeutics, Inc. under the trademark TamoGel.^[1]

Afimoxifene has completed a phase II clinical trial for the treatment of cyclical mastalgia.^[3]

A study in France on 55 women showed that rubbing afimoxifene on the skin was as good as tamoxifen tablets at slowing breast cancer growth. A US trial will compare 6 weeks use before breast cancer surgery. Skin application can reduce systemic levels by a factor of nine and this is expected to reduce the unpleasant side-effects of tamoxifen.^[4]

References

^ ^a ^b "Statement on a nonproprietary name adopted by the USAN council: Afimoxifene". American Medical Association. http://www.ama-assn.org/ama1/pub/upload/mm/365/afimoxifene.pdf. Retrieved 2008-03-26.
^ Desta Z, Ward BA, Soukhova NV, Flockhart DA (2004). "Comprehensive evaluation of tamoxifen sequential biotransformation by the human cytochrome P450 system in vitro: prominent roles for CYP3A and CYP2D6". J Pharmacol Exp Ther 310 (3): 1062–1075. doi:10.1124/jpet.104.065607. PMID 15159443.
^ Mansel R, Goyal A, Nestour EL, Masini-Etévé V, O'Connell K (2007). "A phase II trial of Afimoxifene (4-hydroxytamoxifen gel) for cyclical mastalgia in premenopausal women". Breast Cancer Res. Treat. 106 (3): 389–397. doi:10.1007/s10549-007-9507-x. PMID 17351746.
^ Hagan, Pat (6 Aug 2011). "Breast cancer gel shrinks tumours". Daily Mail (London). http://www.dailymail.co.uk/health/article-2023007/Breast-cancer-gel-shrinks-tumours--tablets-unpleasant-effects.html.

External links

MeSH 4-hydroxytamoxifen

Estrogenics

Receptor

ER (α, β)	Agonists: 16α-Hydroxyestrone Alestramustine Almestrone Benzestrol Bifluranol Broparestrol Carbestrol Chlorotrianisene Cloxestradiol Dienestrol Diethylstilbestrol Diethylstilbestrol diphosphate Diosgenin Doisynoestrol DPN Epiestriol Epimestrol Eptamestrol/Etamestrol ERB-041 Equilenin Equilin Estetrol Estradiol Estradiol benzoate Estradiol butyrylacetate Estradiol cypionate Estradiol dienanthate Estradiol dipropionate Estradiol diundecyclate Estradiol diundecyclenate Estradiol enanthate Estradiol fluroate Estradiol hemisuccinate Estradiol hexahydrobenzoate Estradiol monopropionate Estradiol palmitate Estradiol pivalate Estradiol propoxyphenylpropionate Estradiol stearate Estradiol undecylate Estradiol valerate Estramustine Estramustine phosphate Estrapronicate Estrazinol Estriol Estriol succinate Estriol tripropionate Estrofurate Estromustine Estrone Estrone acetate Estrone cyanate Estrone sulfate Estrone tetraacetylglucoside Estropipate Etamestrol Ethinylestradiol Ethinylestradiol 3-isopropylsulfonate FERb 033 Fenestrel Fosfestrol Furostilbestrol Hexestrol Hexestrol diacetate Hexestrol dicaprylate Hexestrol diphosphate Hexestrol dipropionate Hydroxyestrone diacetate Mestranol Methallenestril Methestrol Methestrol dipropionate Moxestrol Nilestriol Orestrate Polyestradiol phosphate PPT Promestriene Promethoestrol Quinestradol Quinestrol β-Sitosterol WAY-200,070 Note: Though not listed here, many anabolic steroids can also be estrogenic as they can be aromatized into estrogen-like metabolites that possess estrogenic activity. Mixed (SERMs): 2-Hydroxyestrone Acolbifene Afimoxifene Arzoxifene Bazedoxifene Clomifene Clomifenoxide Cyclofenil Droloxifene Enclomifene Endoxifen Epimestrol Femarelle Fispemifene GW5638 Idoxifene Lasofoxifene Levormeloxifene Menerba Mepitiostane Miproxifene Nafoxidine Nitromifene Ormeloxifene Ospemifene Panomifene Pipendoxifene Prinaberel Raloxifene SS1010 Sivifene Tamoxifen TAS-108 Tesmilifene Tibolone Toremifene Trioxifene Y-134 Zindoxifene Zuclomifene Antagonists: Acefluranol Clometerone Delmadinone Dimepregnen Epitiostanol Fulvestrant Gestrinone ICI-164,384 Mepitiostane MPP PHTPP RU-58,668 SS1020 ZK-164,015 ZK-191,703 Note: Xenoestrogens (e.g., phytoestrogens and mycoestrogens) are not included here. For a full list of xenoestrogens, see here.

GPER	Agonists: Estradiol Fulvestrant G-1 Genistein Quercetin Tamoxifen Antagonists: G-15

Enzyme
(inhibitors)

20,22-Desmolase	22-ABC 3,3′-Dimethoxybenzidine 3-Methoxybenzidine Aminoglutethimide Cyanoketone Danazol Etomidate Trilostane

17α-Hydroxylase, 17,20-Lyase	22-ABC 22-Oxime Abiraterone Bifonazole Clotrimazole Cyanoketone Cyproterone Danazol Desogestrel Econazole Galeterone Gestrinone Isoconazole Ketoconazole L-39 Levonorgestrel Liarozole LY-207,320 MDL-27,302 Miconazole Mifepristone Norethisterone Orteronel Pioglitazone Rosiglitazone Spironolactone Stanozolol SU-10,603 Tioconazole TGF-β Troglitazone VN/87-1 YM116

3β-HSD	4-MA Azastene Cyanoketone Danazol Desogestrel Epostane Genistein Gestrinone Levonorgestrel Medroxyprogesterone Medroxyprogesterone acetate Metyrapone Norethisterone Oxymetholone Pioglitazone Rosiglitazone Trilostane Troglitazone

17β-HSD	Danazol Simvastatin

Aromatase	1,4,6-Androstatriene-3,17-dione 4-Androstene-3,6,17-trione 4-Cyclohexylaniline 4-Hydroxytestosterone 5α-DHNET Abyssinone II Aminoglutethimide Anastrozole Ascorbic acid (Vitamin C) Atamestane Bifonazole CGP-45,688 CGS-47,645 Clotrimazole DHT Difeconazole Econazole Exemestane Fadrozole Fenarimol Finrozole Formestane Imazalil Isoconazole Ketoconazole Letrozole Liarozole MEN-11066 Miconazole Minamestane Nimorazole NKS01 Norethindrone ORG-33,201 Penconazole Plomestane Prochloraz Propioconazole Pyridoglutethimide Rogletimide Rotenone Talarozole Testolactone Tioconazole Triadimefon Triadimenol Troglitazone Vorozole YM511 Zinc Note: 5α-reductase and 21-hydroxylase inhibitors may also affect estrogen levels as they prevent metabolism of estrogen steroid precursors.

Other

Precursors	Cholesterol 22R-Hydroxycholesterol 20α,22R-Dihydroxycholesterol Pregnenolone 17-Hydroxypregnenolone Progesterone 17-Hydroxyprogesterone Cortodoxone DHEA DHEA sulfate Androstenediol Androstenedione Testosterone

Indirect	Androgens/Antiandrogens (see here) Calcitriol (a form of Vitamin D) GnRH agonists/antagonists (see here) Gonadotropins (see here) Plasma proteins (SHBG, ABP, Albumin) Progestogens/Antiprogestins (see here) Prolactin

Procedures	Adrenalectomy Hypophysectomy Oophorectomy Orchiectomy

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