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Chemical compound
D-15414
1-ethyl-2-(4-hydroxyphenyl)-3-methylindol-5-ol
CAS Number PubChem CID Formula C 17 H 17 N O 2 Molar mass 267.328 g·mol−1 3D model (JSmol )
CCN1C2=C(C=C(C=C2)O)C(=C1C3=CC=C(C=C3)O)C
InChI=1S/C17H17NO2/c1-3-18-16-9-8-14(20)10-15(16)11(2)17(18)12-4-6-13(19)7-5-12/h4-10,19-20H,3H2,1-2H3
Key:BXTNOIWYTWIPEL-UHFFFAOYSA-N
D-15414 is a nonsteroidal weak estrogen of the 2-phenylindole group which was never marketed.[ 1] [ 2] It is the major metabolite of the selective estrogen receptor modulator (SERM) zindoxifene (D-16726).[ 3] D-15414 has high affinity for the estrogen receptor (ER) and inhibits the growth of ER-positive MCF-7 breast cancer cells in vitro .[ 3] However, contradictorily, subsequent research found that the drug produced fully estrogenic effects in vitro similarly to but less actively than estradiol , with no antiestrogenic activity observed.[ 1] [ 2] The reason for the discrepancy between the findings is unclear, though may be due to methodology .[ 2] The unexpected estrogenic activity of D-15414 may be responsible for the failure of zindoxifene in clinical trials as a treatment for breast cancer .[ 1] [ 4]
^ a b c Jordan VC, Tormey DC (1988). "Antiestrogen Therapy for Breast Cancer". Endocrine Therapies in Breast and Prostate Cancer . Cancer Treatment and Research. Vol. 39. pp. 97–110. doi :10.1007/978-1-4613-1731-9_7 . ISBN 978-1-4612-8974-6 . PMID 2908611 .
^ a b c Robinson SP, Koch R, Jordan VC (February 1988). "In vitro estrogenic actions in rat and human cells of hydroxylated derivatives of D16726 (zindoxifene), an agent with known antimammary cancer activity in vivo". Cancer Research . 48 (4): 784–787. PMID 3338076 .
^ a b von Angerer E, Prekajac J, Berger M (April 1985). "The inhibitory effect of 5-acetoxy-2-(4-acetoxyphenyl)-1-ethyl-3-methylindole (D 16726) on estrogen-dependent mammary tumors". European Journal of Cancer & Clinical Oncology . 21 (4): 531–537. doi :10.1016/0277-5379(85)90048-3 . PMID 3924626 .
^ Maximov PY, McDaniel RE, Jordan VC (23 July 2013). Tamoxifen: Pioneering Medicine in Breast Cancer . Springer Science & Business Media. pp. 170–. ISBN 978-3-0348-0664-0 .
ER Tooltip 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
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
Estramustine
Estramustine phosphate
Estrapronicate
Estrazinol
Estriol
Estrofurate
Estrogenic substances
Estromustine
Estrone
Etamestrol (eptamestrol)
Ethinylandrostenediol
Ethinylestradiol
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
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 (SERMs Tooltip Selective estrogen receptor modulators ) Antagonists
Coregulator-binding modulators: ERX-11
GPER Tooltip G protein-coupled estrogen receptor
Agonists Antagonists Unknown