Clinical data | |
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Other names | P4-3-CMO; Progesterone 3-carboxymethyloxime; Progesterone 3-(O-carboxymethyl)oxime; 3-(O-Carboxymethyl-oximino)progesterone; [[(20-Oxopregn-4-en-3-ylidene)amino]oxy]acetic acid |
Routes of administration | By mouth [1] |
Drug class | Progestogen; Neurosteroid |
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ChEBI | |
ECHA InfoCard | 100.164.875 |
Chemical and physical data | |
Formula | C23H33NO4 |
Molar mass | 387.520 g·mol−1 |
3D model (JSmol) | |
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Progesterone carboxymethyloxime, or progesterone 3-(O-carboxymethyl)oxime (P4-3-CMO), is a progestin which was never marketed. [1] [2] [3] It is an oral prodrug of progesterone with improved pharmacokinetic properties. [1] The compound was developed in an attempt to address the poor oral pharmacokinetics of progesterone, including its very low bioavailability and short biological half-life. [1] [2] These properties of progesterone are thought to be caused by its low water solubility and high metabolic clearance rate due to rapid degradation in the intestines and liver. [1] [2] Drugs with low aqueous solubility are not absorbed well in the intestines because their dissolution in water is limited. [4]
P4-3-CMO (as the potassium salt) showed water solubility that was increased by more than four orders of magnitude relative to progesterone (solubility = 9.44 mol/L and 0.0006 mol/L, respectively). [2] In addition, it showed an in vitro terminal half-life in rat liver microsomes that was 363-fold longer than that of progesterone (half-life = 795.5 minutes and 2.2 minutes, respectively). [1] As such, P4-3-CMO could have both improved absorption and increased metabolic stability relative to progesterone. [1] [2] However, the compound has not been further assessed nor studied in humans. [1] [2]
Norelgestromin, or norelgestromine, sold under the brand names Evra and Ortho Evra among others, is a progestin medication which is used as a method of birth control for women. The medication is available in combination with an estrogen and is not available alone. It is used as a patch that is applied to the skin.
Norgestimate, sold under the brand names Ortho Tri-Cyclen and Previfem among others, is a progestin medication which is used in birth control pills for women and in menopausal hormone therapy. The medication is available in combination with an estrogen and is not available alone. It is taken by mouth.
Absorption is the journey of a drug travelling from the site of administration to the site of action.
Etynodiol diacetate, or ethynodiol diacetate, sold under the brand names Demulen and Femulen among others, is a progestin medication which is used in birth control pills. The medication is available only in combination with an estrogen. It is taken by mouth.
Norethisterone, also known as norethindrone and sold under many brand names, is a progestin medication used in birth control pills, menopausal hormone therapy, and for the treatment of gynecological disorders. The medication is available in both low-dose and high-dose formulations and both alone and in combination with an estrogen. It is used by mouth or, as norethisterone enanthate, by injection into muscle.
Medrogestone, sold under the brand name Colprone among others, is a progestin medication which has been used in menopausal hormone therapy and in the treatment of gynecological disorders. It is available both alone and in combination with an estrogen. It is taken by mouth.
Noretynodrel, or norethynodrel, sold under the brand name Enovid among others, is a progestin medication which was previously used in birth control pills and in the treatment of gynecological disorders but is now no longer marketed. It was available both alone and in combination with an estrogen. The medication is taken by mouth.
A progestogen ester is an ester of a progestogen or progestin. The prototypical progestogen is progesterone, an endogenous sex hormone. Esterification is frequently employed to improve the pharmacokinetics of steroids, including oral bioavailability, lipophilicity, and elimination half-life. In addition, with intramuscular injection, steroid esters are often absorbed more slowly into the body, allowing for less frequent administration. Many steroid esters function as prodrugs.
Estradiol/progesterone (E2/P4), sold under the brand name Bijuva among others, is a combined estrogen and progestogen medication which is used in the treatment of menopausal symptoms in postmenopausal women. It contains estradiol, an estrogen, and progesterone, a progestogen, and is available in both oral and intramuscular formulations. E2/P4 differs from other estrogen–progestogen formulations in that the sex-hormonal agents used are bioidentical.
Progesterone (P4) is a medication and naturally occurring steroid hormone. It is a progestogen and is used in combination with estrogens mainly in hormone therapy for menopausal symptoms and low sex hormone levels in women. It is also used in women to support pregnancy and fertility and to treat gynecological disorders. Progesterone can be taken by mouth, vaginally, and by injection into muscle or fat, among other routes. A progesterone vaginal ring and progesterone intrauterine device used for birth control also exist in some areas of the world.
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.
P1-185, also known as progesterone 3-O-(L-valine)-E-oxime or as pregn-4-ene-3,20-dione 3-O-(L-valine)-E-oxime, is a synthetic progestogen and neurosteroid and an oxime ester analogue and prodrug of progesterone. It was developed as an improved water-soluble version of progesterone such that it could be formulated as an aqueous preparation and easily and rapidly administered intravenously as a potential therapy for traumatic brain injury. However, the chemical synthesis of P1-185 was described as somewhat challenging, so oxime conjugates of progesterone of the C20 instead of C3 position, such as EIDD-1723 and EIDD-036, have since been developed.
EIDD-036, also known as EPRX-036, as well as progesterone 20-oxime (P4-20-O) or 20-(hydroxyimino)pregn-4-en-3-one, is a synthetic, water-soluble analogue of progesterone, a neurosteroid, and the active metabolite of EIDD-1723 (EPRX-01723), a medication developed for the potential treatment of traumatic brain injury.
Estradiol acetylsalicylate, or estradiol 3-acetylsalicylate, is a synthetic estrogen and estrogen ester – specifically, the C3 acetylsalicylic acid (aspirin) ester of estradiol – which was described in the late 1980s and was never marketed. In dogs, the oral bioavailability of estradiol acetylsalicylate was found to be 17-fold higher than that of unmodified estradiol. However, a subsequent study found that the oral bioavailability of estradiol and estradiol acetylsalicylate did not differ significantly in rats, suggestive of a major species difference.
Progesterone dioxime, or progesterone 3,20-dioxime (P4-3,20-DO), also known as 3,20-di(hydroxyimino)pregn-4-en-3-one, is a progesterone derivative which was never marketed. It is a progestogen oxime – specifically, the C3 and C20 dioxime of the progestogen progesterone. Progesterone C3 and C20 oxime conjugates have been found to be water-soluble prodrugs of progesterone and pregnane neurosteroids.
Progesterone 3-oxime (P4-3-O), also known as 3-(hydroxyimino)pregn-4-en-3-one, is a progesterone derivative which was never marketed. It is a progestogen oxime – specifically, the C3 oxime of the progestogen progesterone. Progesterone C3 and C20 oxime conjugates, like progesterone 3-(O-carboxymethyl)oxime, have been found to be water-soluble prodrugs of progesterone and pregnane neurosteroids.
The pharmacokinetics of progesterone, concerns the pharmacodynamics, pharmacokinetics, and various routes of administration of progesterone.
Chiral inversion is the process of conversion of one enantiomer of a chiral molecule to its mirror-image version with no other change in the molecule.