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List Of Corticosteroids
This is a list of corticosteroids ( glucocorticoids and mineralocorticoids) or derivatives of cortisol (hydrocortisone). Most esters of these corticosteroids are not included in this list; for esters, see here instead. The most common structural modifications in synthetic corticosteroids include 1(2)- dehydrogenation, 6α-, 9α-, 16α-, and 16β- substitution (with a halogen or methyl group), 16α,17α- acetonidation, and 17α- and 21-esterification. Natural * 11-Dehydrocorticosterone (11-oxocorticosterone, 17-deoxycortisone) = 21-hydroxypregn-4-ene-3,11,20-trione * 11-Deoxycorticosterone (deoxycortone, desoxycortone; 21-hydroxyprogesterone) = 21-hydroxypregn-4-ene-3,20-dione * 11-Deoxycortisol (cortodoxone, cortexolone) = 17α,21-dihydroxypregn-4-ene-3,20-dione * 11-Ketoprogesterone (11-oxoprogesterone; Ketogestin) = pregn-4-ene-3,11,20-trione * 11β-Hydroxypregnenolone = 3β,11β-dihydroxypregn-5-en-20-on* 11β-Hydroxyprogesterone (21-deoxycorticosterone) = 11β- ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Esterification
In chemistry, an ester is a compound derived from an oxoacid (organic or inorganic) in which at least one hydroxyl group () is replaced by an alkoxy group (), as in the substitution reaction of a carboxylic acid and an alcohol. Glycerides are fatty acid esters of glycerol; they are important in biology, being one of the main classes of lipids and comprising the bulk of animal fats and vegetable oils. Esters typically have a pleasant smell; those of low molecular weight are commonly used as fragrances and are found in essential oils and pheromones. They perform as high-grade solvents for a broad array of plastics, plasticizers, resins, and lacquers, and are one of the largest classes of synthetic lubricants on the commercial market. Polyesters are important plastics, with monomers linked by ester moieties. Phosphoesters form the backbone of DNA molecules. Nitrate esters, such as nitroglycerin, are known for their explosive properties. '' Nomenclature Etymology The ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
18-Hydroxy-11-deoxycorticosterone
18-Hydroxy-11-deoxycorticosterone (also known as 18-OH-DOC, 18,21-dihydroxyprogesterone, and 18,21-dihydroxypregn-4-ene-3,20-dione) is an endogenous steroid and a mineralocorticoid. It is a hydroxylated metabolite of 11-deoxycorticosterone. In rats, conversion of 11-deoxycorticosterone into 18-OH-DOC is catalyzed by the CYP11B3 enzyme. In humans, 18-OH-DOC is a weak mineralocorticoid. It may be increased in 17α-hydroxylase (CYP17A1) deficiency, in aldosterone synthase ( CYP11B2) deficiency, in primary aldosteronism Primary aldosteronism (PA)'','' also known as primary hyperaldosteronism or Conn's syndrome, refers to the excess production of the hormone aldosterone from the adrenal glands, resulting in low renin levels and high blood pressure. This abnormalit ..., and may also indicate a histologic variant of the aldosteronoma. Excessive secretion of 18-OH-DOC can cause mineralocorticoid excess syndrome, although these cases are very rare. References External link ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
17α-Hydroxyprogesterone
17α-Hydroxyprogesterone (17α-OHP), also known as 17-OH progesterone (17-OHP), or hydroxyprogesterone (OHP), is an endogenous progestogen steroid hormone related to progesterone. It is also a chemical intermediate in the biosynthesis of many other endogenous steroids, including androgens, estrogens, glucocorticoids, and mineralocorticoids, as well as neurosteroids. Biological activity 17α-OHP is an agonist of the progesterone receptor (PR) similarly to progesterone, albeit weakly in comparison. In addition, it is an antagonist of the mineralocorticoid receptor (MR) as well as a partial agonist of the glucocorticoid receptor (GR), albeit with very low potency ( EC50 >100-fold less relative to cortisol) at the latter site, also similarly to progesterone. Biochemistry Biosynthesis 17α-OHP is derived from progesterone via 17α-hydroxylase (encoded by CYP17A1) 17α-OHP increases in the third trimester of pregnancy primarily due to fetal adrenal production. This steroid is ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
11β-Hydroxyprogesterone
11β-Hydroxyprogesterone (11β-OHP), also known as 21-deoxycorticosterone, as well as 11β-hydroxypregn-4-ene-3,20-dione, is a naturally occurring, endogenous steroid and derivative of progesterone. It is a potent mineralocorticoid. Syntheses of 11β-OHP from progesterone is catalyzed by the steroid 11β-hydroxylase (CYP11B1) enzyme, and, to a lesser extent, by the aldosterone synthase enzyme (CYP11B2). Function Along with its epimer 11α-hydroxyprogesterone (11α-OHP), 11β-OHP has been identified as a very potent competitive inhibitor of both isoforms ( 1 and 2) of 11β-hydroxysteroid dehydrogenase (11β-HSD). Outcome of 21-hydroxylase deficiency It has been known since 1987 that increased levels of 11β-OHP occur in 21-hydroxylase deficiency. A study in 2017 has shown that in subjects with 21-hydroxylase deficiency, serum 11β-OHP concentrations range from 0.012 to 3.37 ng/mL, while in control group it was below detection limit of 0.012 ng/mL. 21-hydroxylase is an ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
11-Ketoprogesterone
11-Ketoprogesterone (brand name Ketogestin; former developmental code names Bio 66, U-1258), or 11-oxoprogesterone, also known as pregn-4-ene-3,11,20-trione, is a pregnane steroid related to cortisone (11-keto-17α,21-dihydroxyprogesterone) that was formerly used in veterinary medicine in the treatment of bovine ketosis. It was synthesized in 1940. The steroid has profound effects on carbohydrate metabolism and possesses activities associated with adrenal cortex hormones like cortisone. However, it is non- toxic even in high dosages, suggesting that it lacks conventional glucocorticoid activity, and it does not possess mineralocorticoid activity, unlike other adrenocortical hormones. 11-Ketoprogesterone may act through membrane glucocorticoid receptors. 11-Ketoprogesterone is reportedly devoid of androgenic, estrogenic, and progestogenic activity. 11β-Hydroxyprogesterone has also been reported to be devoid of progestogenic activity, but has subsequently been reported ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
11-Deoxycortisol
11-Deoxycortisol, also known as cortodoxone (INN), cortexolone as well as 17α,21-dihydroxyprogesterone or 17α,21-dihydroxypregn-4-ene-3,20-dione, is an endogenous glucocorticoid steroid hormone, and a metabolic intermediate towards cortisol. It was first described by Tadeusz Reichstein in 1938 as Substance S, thus has also been referred to as Reichstein's Substance S or Compound S. Function 11-Deoxycortisol acts as a glucocorticoid, though is less potent than cortisol. 11-Deoxycortisol is synthesized from 17α-hydroxyprogesterone by 21-hydroxylase and is converted to cortisol by 11β-hydroxylase. 11-Deoxycortisol in mammals has limited biological activity and mainly acts as metabolic intermediate within the glucocorticoid pathway, leading to cortisol. In sea lamprey, a member of the agnathans that evolved more than 500 million years ago, 11-deoxycortisol is the major and final glucocorticoid, with mineralocorticoid activity. 11-deoxycortisol also takes part, by binding to spec ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
