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Chemical compound
Epiestriol
Trade names Actriol, Arcagynil, Klimadoral Other names Epioestriol; 16β-Epiestriol; 16-Epiestriol; 16β-Hydroxy-17β-estradiol
Routes of administration
By mouth
Drug class
Estrogen
(8R ,9S ,13S ,14S ,16S ,17R )-13-methyl-6,7,8,9,11,12,14,15,16,17-decahydrocyclopenta[a ]phenanthrene-3,16,17-triol
CAS Number
PubChem
CID
ChemSpider
UNII
ChEMBL
CompTox Dashboard (
EPA )
ECHA InfoCard
100.008.126
Formula C 18 H 24 O 3
Molar mass 288.387 g·mol−1 3D model (
JSmol )
CC12CCC3C(C1CC(C2O)O)CCC4=C3C=CC(=C4)O
InChI=1S/C18H24O3/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/h3,5,8,13-17,19-21H,2,4,6-7,9H2,1H3/t13-,14-,15+,16+,17+,18+/m1/s1
Key:PROQIPRRNZUXQM-ZMSHIADSSA-N
Epiestriol (
INN Tooltip International Nonproprietary Name ) (brand names Actriol , Arcagynil , Klimadoral ), or epioestriol (
BAN Tooltip British Approved Name ), also known as 16β-epiestriol or simply 16-epiestriol as well as 16β-hydroxy-17β-estradiol , is a minor and weak
endogenous
estrogen , and the 16β-
epimer of
estriol (which is 16α-hydroxy-17β-estradiol).
[1]
[2] Epiestriol is (or has previously been) used clinically in the treatment of
acne .
[1] In addition to its estrogenic actions, epiestriol has been found to possess significant
anti-inflammatory properties without
glycogenic activity or
immunosuppressive effects, an interesting finding that is in contrast to conventional anti-inflammatory steroids like
hydrocortisone (a
glucocorticoid ).
[3]
[4]
Relative affinities (%) of epiestriol and related steroids
[5]
[6]
[7]
[8]
Compound
PR Tooltip Progesterone receptor
AR Tooltip Androgen receptor
ER Tooltip Estrogen receptor
GR Tooltip Glucocorticoid receptor
MR Tooltip Mineralocorticoid receptor
SHBG Tooltip Sex hormone-binding globulin
CBG Tooltip Corticosteroid binding globulin
Estradiol
2.6
7.9
100
0.6
0.13
8.7
<0.1
Alfatradiol
<1
<1
15
<1
<1
?
?
Estriol
<1
<1
15
<1
<1
?
?
16β-Epiestriol
<1
<1
20
<1
<1
?
?
17α-Epiestriol
<1
<1
31
<1
<1
?
?
Values are percentages (%). Reference
ligands (100%) were
progesterone for the
PR Tooltip progesterone receptor ,
testosterone for the
AR Tooltip androgen receptor ,
E2 for the
ER Tooltip estrogen receptor ,
DEXA Tooltip dexamethasone for the
GR Tooltip glucocorticoid receptor ,
aldosterone for the
MR Tooltip mineralocorticoid receptor ,
DHT Tooltip dihydrotestosterone for
SHBG Tooltip sex hormone-binding globulin , and
cortisol for
CBG Tooltip Corticosteroid-binding globulin .
See also
References
^
a
b Elks J (14 November 2014).
The Dictionary of Drugs: Chemical Data: Chemical Data, Structures and Bibliographies . Springer. pp. 899–.
ISBN
978-1-4757-2085-3 .
^ Labhart A (6 December 2012).
Clinical Endocrinology: Theory and Practice . Springer Science & Business Media. pp. 522–.
ISBN
978-3-642-96158-8 .
^ Latman NS, Kishore V, Bruot BC (June 1994). "16-epiestriol: an anti-inflammatory steroid without glycogenic activity". Journal of Pharmaceutical Sciences . 83 (6): 874–7.
doi :
10.1002/jps.2600830623 .
PMID
9120824 .
^ Miller E, Bates R, Bjorndahl J, Allen D, Burgio D, Bouma C, Stoll J, Latman N (November 1998). "16-Epiestriol, a novel anti-inflammatory nonglycogenic steroid, does not inhibit IFN-gamma production by murine splenocytes". Journal of Interferon & Cytokine Research . 18 (11): 921–5.
doi :
10.1089/jir.1998.18.921 .
PMID
9858313 .
^ Raynaud JP, Ojasoo T, Bouton MM, Philibert D (1979).
"Receptor Binding as a Tool in the Development of New Bioactive Steroids" . Drug Design . pp. 169–214.
doi :
10.1016/B978-0-12-060308-4.50010-X .
ISBN
9780120603084 .
^ Ojasoo T, Raynaud JP (November 1978).
"Unique steroid congeners for receptor studies" . Cancer Research . 38 (11 Pt 2): 4186–98.
PMID
359134 .
^ Ojasoo T, Delettré J, Mornon JP, Turpin-VanDycke C, Raynaud JP (1987). "Towards the mapping of the progesterone and androgen receptors". Journal of Steroid Biochemistry . 27 (1–3): 255–69.
doi :
10.1016/0022-4731(87)90317-7 .
PMID
3695484 .
^ Raynaud JP, Bouton MM, Moguilewsky M, Ojasoo T, Philibert D, Beck G, Labrie F, Mornon JP (January 1980). "Steroid hormone receptors and pharmacology". Journal of Steroid Biochemistry . 12 : 143–57.
doi :
10.1016/0022-4731(80)90264-2 .
PMID
7421203 .
Estrogens
ER Tooltip Estrogen receptor agonists
Steroidal:
Alfatradiol
Certain
androgens /
anabolic steroids (e.g.,
testosterone ,
testosterone esters ,
methyltestosterone ,
metandienone ,
nandrolone esters ) (via estrogenic metabolites)
Certain
progestins (e.g.,
norethisterone ,
noretynodrel ,
etynodiol diacetate ,
tibolone )
Clomestrone
Cloxestradiol acetate
Conjugated estriol
Conjugated estrogens
Epiestriol
Epimestrol
Esterified estrogens
Estetrol †
Estradiol
Estradiol esters (e.g.,
estradiol acetate ,
estradiol benzoate ,
estradiol cypionate ,
estradiol enanthate ,
estradiol undecylate ,
estradiol valerate ,
polyestradiol phosphate ,
estradiol ester mixtures (
Climacteron ))
Estramustine phosphate
Estriol
Estriol esters (e.g.,
estriol succinate ,
polyestriol phosphate )
Estrogenic substances
Estrone
Estrone esters
Ethinylestradiol #
Hydroxyestrone diacetate
Mestranol
Methylestradiol
Moxestrol
Nilestriol
Prasterone (dehydroepiandrosterone; DHEA)
Promestriene
Quinestradol
Quinestrol
Progonadotropins
Antiestrogens
ER Tooltip Estrogen receptor antagonists (incl.
SERMs Tooltip selective estrogen receptor modulators /
SERDs Tooltip selective estrogen receptor downregulators )
Aromatase inhibitors
Antigonadotropins
Androgens /
anabolic steroids (e.g.,
testosterone ,
testosterone esters ,
nandrolone esters ,
oxandrolone ,
fluoxymesterone )
D2 receptor
antagonists (
prolactin releasers) (e.g.,
domperidone ,
metoclopramide ,
risperidone ,
haloperidol ,
chlorpromazine ,
sulpiride )
GnRH agonists (e.g.,
leuprorelin ,
goserelin )
GnRH antagonists (e.g.,
cetrorelix ,
elagolix )
Progestogens (e.g.,
chlormadinone acetate ,
cyproterone acetate ,
gestonorone caproate ,
hydroxyprogesterone caproate ,
medroxyprogesterone acetate ,
megestrol acetate )
Others
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