List of estrogen esters

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Estradiol, the base estrogen of most estrogen esters. Estradiol.svg
Estradiol, the base estrogen of most estrogen esters.

This is a list of estrogen esters , or ester prodrugs of estrogens. It includes esters, as well as ethers, of steroidal estrogens like estradiol, estrone, and estriol and of nonsteroidal estrogens like the stilbestrols diethylstilbestrol and hexestrol.

Contents

Esters of steroidal estrogens

Estradiol esters

Marketed

Many esters of estradiol have been marketed, including the following major esters: [1] [2]

And the following less commonly used esters: [1] [2]

The following nitrogen mustard ester of estradiol is a cytostatic antineoplastic agent and has been marketed: [1] [2]

Never marketed

A number of other estradiol esters which have not been marketed include: [2]

The following cytostatic antineoplastic nitrogen mustard esters of estradiol have not been marketed: [2]

  • Alestramustine (estradiol 3-(bis(2-chloroethyl)carbamate), 17-ester with L-alanine)
  • Atrimustine (KM-2210; bestrabucil, busramustine)
  • Estradiol mustard (NSC-112259; chlorphenacyl estradiol diester)
  • Estramustine (Leo 275; Ro 21-8837)
  • Estromustine (Leo 271 f; estrone 17β-3-N-bis(2-chloroethyl)carbamate, estrone–cytostatic complex)

Estrone esters

Marketed

Esters of estrone that have been marketed include: [1] [2]

Never marketed

Other estrone esters which are notable but have not been marketed include:

Estriol esters

Marketed

Esters of estriol that have been marketed include: [1] [2]

Never marketed

The following ester of estriol was never marketed:

Ethinylestradiol esters

Marketed

The following esters of ethinylestradiol exist and have been marketed: [1] [2]

Never marketed

Esters of other steroidal estrogens

Marketed

The following esters of other estrogens exist and have been marketed: [1]

Ethers of steroidal estrogens

Marketed

A number of estrogen ethers also exist and have been marketed, including: [22] [1]

Never marketed

A few other estrogen ethers which are notable but have not been marketed include: [22]

Esters of nonsteroidal estrogens

Diethylstilbestrol esters

Marketed

Major esters of diethylstilbestrol include:

  • Diethylstilbestrol dipropionate (Agostilben, Biokeral, Clinestrol, Cyclen, Estilbin, Estril, Neobenzoestrol, Orestol, Oroestrol, Ostregenin, Prostilbene, Stilbestriol DP, Stilboestrolum Dipropionicum, Stilboestrol, Synestrin, Willestrol)
  • Fosfestrol (diethylstilbestrol diphosphate) (Honvan, Difostilben, Fosfostilben, Fostrolin, Stilbol, Stilphostrol, Vagestrol)

Less commonly used esters of diethylstilbestrol include:

Never marketed

As well as the following nitrogen mustard ester:

  • ICI-85966 (Stilbostat; diethylstilbestrol bis(di(2-chloroethyl)carbamate))

Hexestrol esters

Marketed

Never marketed

The following nitrogen mustard ester of hexestrol was never marketed:

  • Phenestrol (fenestrol; hexestrol bis[4-[bis(2-chloroethyl)amino]phenylacetate)

Esters of other nonsteroidal estrogens

Marketed

Ethers of nonsteroidal estrogens

Diethylstilbestrol

Marketed

  • Diethylstilbestrol monobenzyl ether (benzelstilbestrol) (Monozol, Hypantin, Pituitrope)
  • Dimestrol (dianisylhexene, diethylstilbestrol dimethyl ether, dimethoxydiethylstilbestrol) (Depot-Ostromon, Synthila)
  • Mestilbol (diethylstilbestrol monomethyl ether) (Monomestro or Monomestrol)

See also

Related Research Articles

<span class="mw-page-title-main">Estradiol benzoate</span> Chemical compound

Estradiol benzoate (EB), sold under the brand name Progynon-B among others, is an estrogen medication which is used in hormone therapy for menopausal symptoms and low estrogen levels in women, in hormone therapy for transgender women, and in the treatment of gynecological disorders. It is also used in the treatment of prostate cancer in men. Estradiol benzoate is used in veterinary medicine as well. When used clinically, the medication is given by injection into muscle usually two to three times per week.

<span class="mw-page-title-main">Estriol succinate</span> Chemical compound

Estriol succinate, sold under the brand name Synapause among others, is an estrogen medication which is used in the treatment of menopausal symptoms. It is taken by mouth, in through the vagina, and by injection.

An estrogen ester is an ester of an estrogen, most typically of estradiol but also of other estrogens such as estrone, estriol, and even nonsteroidal estrogens like diethylstilbestrol. Esterification renders estradiol into a prodrug of estradiol with increased resistance to first-pass metabolism, slightly improving its oral bioavailability. In addition, estrogen esters have increased lipophilicity, which results in a longer duration when given by intramuscular or subcutaneous injection due to the formation of a long-lasting local depot in muscle and fat. Conversely, this is not the case with intravenous injection or oral administration. Estrogen esters are rapidly hydrolyzed into their parent estrogen by esterases once they have been released from the depot. Because estradiol esters are prodrugs of estradiol, they are considered to be natural and bioidentical forms of estrogen.

<span class="mw-page-title-main">Conjugated estrogens</span> Estrogen medication

Conjugated estrogens (CEs), or conjugated equine estrogens (CEEs), sold under the brand name Premarin among others, is an estrogen medication which is used in menopausal hormone therapy and for various other indications. It is a mixture of the sodium salts of estrogen conjugates found in horses, such as estrone sulfate and equilin sulfate. CEEs are available in the form of both natural preparations manufactured from the urine of pregnant mares and fully synthetic replications of the natural preparations. They are formulated both alone and in combination with progestins such as medroxyprogesterone acetate. CEEs are usually taken by mouth, but can also be given by application to the skin or vagina as a cream or by injection into a blood vessel or muscle.

<span class="mw-page-title-main">Estrogen conjugate</span> Class of chemical compounds

An estrogen conjugate is a conjugate of an endogenous estrogen. They occur naturally in the body as metabolites of estrogens and can be reconverted back into estrogens. They serve as a circulating reservoir for estrogen, particularly in the case of orally administered pharmaceutical estradiol. Estrogen conjugates include sulfate and/or glucuronide conjugates of estradiol, estrone, and estriol:

<span class="mw-page-title-main">Estradiol glucuronide</span> Chemical compound

Estradiol glucuronide, or estradiol 17β-D-glucuronide, is a conjugated metabolite of estradiol. It is formed from estradiol in the liver by UDP-glucuronyltransferase via attachment of glucuronic acid and is eventually excreted in the urine by the kidneys. It has much higher water solubility than does estradiol. Glucuronides are the most abundant estrogen conjugates.

<span class="mw-page-title-main">Estrone glucuronide</span> Chemical compound

Estrone glucuronide, or estrone-3-D-glucuronide, is a conjugated metabolite of estrone. It is formed from estrone in the liver by UDP-glucuronyltransferase via attachment of glucuronic acid and is eventually excreted in the urine by the kidneys. It has much higher water solubility than does estrone. Glucuronides are the most abundant estrogen conjugates and estrone glucuronide is the dominant metabolite of estradiol.

<span class="mw-page-title-main">Estradiol sulfamate</span> Steroid sulfatase inhibitor under development

Estradiol sulfamate, or estradiol-3-O-sulfamate, is a steroid sulfatase (STS) inhibitor which is under development for the treatment of endometriosis. It is the C3 sulfamate ester of estradiol, and was originally thought to be a prodrug of estradiol.

<span class="mw-page-title-main">Estrone sulfamate</span> Chemical compound

Estrone sulfamate, or estrone-3-O-sulfamate, is a steroid sulfatase (STS) inhibitor which has not yet been marketed. It is the C3 sulfamate ester of the estrogen estrone. Unlike other estrogen esters however, EMATE is not an effective prodrug of estrogens. A closely related compound is estradiol sulfamate (E2MATE), which is extensively metabolized into EMATE and has similar properties to it.

<span class="mw-page-title-main">Estrogen (medication)</span> Type of medication

An estrogen (E) is a type of medication which is used most commonly in hormonal birth control and menopausal hormone therapy, and as part of feminizing hormone therapy for transgender women. They can also be used in the treatment of hormone-sensitive cancers like breast cancer and prostate cancer and for various other indications. Estrogens are used alone or in combination with progestogens. They are available in a wide variety of formulations and for use by many different routes of administration. Examples of estrogens include bioidentical estradiol, natural conjugated estrogens, synthetic steroidal estrogens like ethinylestradiol, and synthetic nonsteroidal estrogens like diethylstilbestrol. Estrogens are one of three types of sex hormone agonists, the others being androgens/anabolic steroids like testosterone and progestogens like progesterone.

<span class="mw-page-title-main">Estriol (medication)</span> Chemical compound

Estriol (E3), sold under the brand name Ovestin among others, is an estrogen medication and naturally occurring steroid hormone which is used in menopausal hormone therapy. It is also used in veterinary medicine as Incurin to treat urinary incontinence due to estrogen deficiency in dogs. The medication is taken by mouth in the form of tablets, as a cream that is applied to the skin, as a cream or pessary that is applied in the vagina, and by injection into muscle.

<span class="mw-page-title-main">Estrone (medication)</span> Estrogen medication

Estrone (E1), sold under the brand names Estragyn, Kestrin, and Theelin among many others, is an estrogen medication and naturally occurring steroid hormone which has been used in menopausal hormone therapy and for other indications. It has been provided as an aqueous suspension or oil solution given by injection into muscle and as a vaginal cream applied inside of the vagina. It can also be taken by mouth as estradiol/estrone/estriol and in the form of prodrugs like estropipate and conjugated estrogens.

<span class="mw-page-title-main">Estradiol benzoate cyclooctenyl ether</span> Chemical compound

Estradiol benzoate cyclooctenyl ether (EBCO), or estradiol 3-benzoate 17β-cyclooctenyl ether, is a synthetic estrogen as well as estrogen ester and ether – specifically, the C3 benzoate ester and C17β cyclooctenyl ether of estradiol – which was described in the early 1970s and was never marketed. It has been found to have a dramatically prolonged duration of action with oral administration in animals, similarly to the related compound quinestrol. A single oral dose of EBCO sustained high uterus weights for 3 weeks in rats. This long-lasting activity may be due to storage of EBCO in fat. It appears that EBCO is absorbed satisfactorily from the gastrointestinal tract, at least partially survives first-pass metabolism in the liver and intestines, and is then sequestered into fat, from which it is slowly released and activated into estradiol. In contrast to quinestrol, the oral activity of EBCO is greatly improved when it is delivered in an oil solution as opposed to an aqueous vehicle.

<span class="mw-page-title-main">EC508</span> Chemical compound

EC508, also known as estradiol 17β-(1- -L-proline), is an estrogen which is under development by Evestra for use in menopausal hormone therapy and as a hormonal contraceptive for the prevention of pregnancy in women. It is an orally active estrogen ester – specifically, a C17β sulfonamide–proline ester of the natural and bioidentical estrogen estradiol – and acts as a prodrug of estradiol in the body. However, unlike oral estradiol and conventional oral estradiol esters such as estradiol valerate, EC508 undergoes little or no first-pass metabolism, has high oral bioavailability, and does not have disproportionate estrogenic effects in the liver. As such, it has a variety of desirable advantages over oral estradiol, similarly to parenteral estradiol, but with the convenience of oral administration. EC508 is a candidate with the potential to replace not only oral estradiol in clinical practice, but also ethinylestradiol in oral contraceptives. Evestra intends to seek Investigational New Drug status for EC508 in the second quarter of 2018.

<span class="mw-page-title-main">Conjugated estriol</span> Pharmaceutical drug

Conjugated estriol, sold under the brand names Progynon and Emmenin, is an estrogen medication which was previously used for estrogen-type indications such as the treatment of menopausal symptoms in women. The term specifically refers to formulations of estriol conjugates which were manufactured from the estrogen-rich urine of pregnant women and were used as medications in the 1920s and 1930s. Conjugated estriol is analogous to and was superseded by conjugated estrogens, which is manufactured from the urine of pregnant mares. Conjugated estriol was among the first forms of pharmaceutical estrogen to be used in medicine. It was taken by mouth.

References

  1. 1 2 3 4 5 6 7 8 IndexNominum2000. Taylor & Francis US. 2000. p. 404. ISBN   978-3-88763-075-1 . Retrieved 29 May 2012.
  2. 1 2 3 4 5 6 7 8 A. D. Roberts (1991). Dictionary of Steroids: Chemical Data, Structures, and Bibliographies. CRC Press. p. 415. ISBN   978-0-412-27060-4 . Retrieved 20 May 2012.
  3. ↑ Ferin, J. (1952). "Relative duration of action of natural and synthetic estrogens administered parenterally in women with estrogen deficiency". The Journal of Clinical Endocrinology & Metabolism. 12 (1): 28–35. doi:10.1210/jcem-12-1-28. ISSN   0021-972X. PMID   14907837.
  4. ↑ "R&D Research". Archived from the original on 2017-09-29. Retrieved 2018-06-25.
  5. ↑ Elger W, Wyrwa R, Ahmed G, Meece F, Nair HB, Santhamma B, Killeen Z, Schneider B, Meister R, Schubert H, Nickisch K (January 2017). "Estradiol prodrugs (EP) for efficient oral estrogen treatment and abolished effects on estrogen modulated liver functions". J. Steroid Biochem. Mol. Biol. 165 (Pt B): 305–311. doi:10.1016/j.jsbmb.2016.07.008. PMID   27449818. S2CID   26650319.
  6. ↑ Ahmed G, Elger W, Meece F, Nair HB, Schneider B, Wyrwa R, Nickisch K (October 2017). "A prodrug design for improved oral absorption and reduced hepatic interaction". Bioorg. Med. Chem. 25 (20): 5569–5575. doi:10.1016/j.bmc.2017.08.027. PMID   28886996.
  7. ↑ Nickisch, K., Santhamma, B., Ahmed, G., Meece, F., Elger, W., Wyrwa, R., & Nair, H. (2017). U.S. Patent No. 9,745,338. Washington, DC: U.S. Patent and Trademark Office. https://patents.google.com/patent/US9745338B2/en
  8. ↑ IARC Working Group on the Evaluation of Carcinogenic Risks to Humans; World Health Organization; International Agency for Research on Cancer (2007). Combined Estrogen-progestogen Contraceptives and Combined Estrogen-progestogen Menopausal Therapy. World Health Organization. pp. 388–. ISBN   978-92-832-1291-1.
  9. ↑ Vizzone, A.; Murari, G. (November 1966). "[Estradiol esters (3-monobenzoate and 3-benzoate-17-beta-acetate) in the therapy of the surgical menopause syndrome. Experimental and clinical results]". Quaderni di Clinica Ostetrica e Ginecologica. 21 (11): 779–790. PMID   5999221.
  10. 1 2 3 Hussain MA, Aungst BJ, Shefter E (January 1988). "Prodrugs for improved oral beta-estradiol bioavailability". Pharm. Res. 5 (1): 44–7. doi:10.1023/A:1015863412137. PMID   3244608. S2CID   7308414.
  11. 1 2 3 Lokind, Kenneth B.; Lorenzen, Finn Hjort; Bundgaard, Hans (1991). "Oral bioavailability of 17β-estradiol and various ester prodrugs in the rat". International Journal of Pharmaceutics. 76 (1–2): 177–182. doi:10.1016/0378-5173(91)90356-S. ISSN   0378-5173.
  12. 1 2 Falconi G, Galletti F, Celasco G, Gardi R (November 1972). "Oral long-lasting estrogenic activity of estradiol 3-benzoate 17-cyclooctenyl ether". Steroids. 20 (5): 627–38. doi:10.1016/0039-128X(72)90020-7. PMID   4654978.
  13. ↑ Galletti F, Gardi R (April 1974). "Effect of two orally active estradiol derivatives on sulfobromphthalein retention in rats". Pharmacol Res Commun. 6 (2): 135–45. doi:10.1016/s0031-6989(74)80021-4. PMID   4438394.
  14. ↑ Ralph I. Dorfman (5 December 2016). Steroidal Activity in Experimental Animals and Man. Elsevier Science. pp. 36–. ISBN   978-1-4832-7299-3.
  15. ↑ Janocko, Laura; Larner, Janice M.; Hochberg, Richard B. (1984). "The Interaction of C-17 Esters of Estradiol with the Estrogen Receptor*". Endocrinology. 114 (4): 1180–1186. doi:10.1210/endo-114-4-1180. ISSN   0013-7227. PMID   6705734.
  16. ↑ Dahlgren E, Crona N, Janson PO, Samsioe G (1985). "Oral replacement with estradiol-cyclooctyl acetate: a new estradiol analogue. Effects on serum lipids, proteins, gonadotrophins, estrogens and uterine endometrial morphology". Gynecol. Obstet. Invest. 20 (2): 84–90. doi:10.1159/000298978. PMID   3932144.
  17. ↑ Luisi M, Kicovic PM, Alicicco E, Franchi F (1978). "Effects of estradiol decanoate in ovariectomized women". J. Endocrinol. Invest. 1 (2): 101–6. doi:10.1007/BF03350355. PMID   755846. S2CID   38187367.
  18. 1 2 Gleason CH, Parker JM (1959). "The duration of activity of the benziloyl hydrazones of testosterone-17-heptanoate, estrone-3-heptanoate and 17α-hydroxy-progesterone-17-heptanoate". Endocrinology. 65 (3): 508–511. doi:10.1210/endo-65-3-508. ISSN   0013-7227. PMID   13828402.
  19. ↑ George W.A Milne (8 May 2018). Drugs: Synonyms and Properties: Synonyms and Properties. Taylor & Francis. pp. 1406–. ISBN   978-1-351-78989-9.
  20. 1 2 Elger W, Palme HJ, Schwarz S (April 1998). "Novel oestrogen sulfamates: a new approach to oral hormone therapy". Expert Opin Investig Drugs. 7 (4): 575–89. doi:10.1517/13543784.7.4.575. PMID   15991994.
  21. ↑ Elger W, Schwarz S, Hedden A, Reddersen G, Schneider B (December 1995). "Sulfamates of various estrogens are prodrugs with increased systemic and reduced hepatic estrogenicity at oral application". J. Steroid Biochem. Mol. Biol. 55 (3–4): 395–403. doi:10.1016/0960-0760(95)00214-6. PMID   8541236. S2CID   31312.
  22. 1 2 J. Elks (14 November 2014). The Dictionary of Drugs: Chemical Data: Chemical Data, Structures and Bibliographies. Springer. ISBN   978-1-4757-2085-3.
  23. ↑ Patel JU, Prankerd RJ, Sloan KB (October 1994). "A prodrug approach to increasing the oral potency of a phenolic drug. 1. Synthesis, characterization, and stability of an O-(imidomethyl) derivative of 17 beta-estradiol". J Pharm Sci. 83 (10): 1477–81. doi:10.1002/jps.2600831022. PMID   7884673.
  24. ↑ Patel J, Katovich MJ, Sloan KB, Curry SH, Prankerd RJ (February 1995). "A prodrug approach to increasing the oral potency of a phenolic drug. Part 2. Pharmacodynamics and preliminary bioavailability of an orally administered O-(imidomethyl) derivative of 17 beta-estradiol". J Pharm Sci. 84 (2): 174–8. doi:10.1002/jps.2600840210. PMID   7738796.
  25. 1 2 Thomas L. Lemke; David A. Williams (24 January 2012). Foye's Principles of Medicinal Chemistry. Lippincott Williams & Wilkins. pp. 1395–. ISBN   978-1-60913-345-0.
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