Etiocholane, also known as 5β-androstane or 5-epiandrostane, is an

androstane Androstane is a C19 steroidal hydrocarbon with a gonane core. Androstane can exist as either of two isomers, known as 5α-androstane and 5β-androstane. File:androstane.png, 5α-Androstane File:androstane 5beta.png, 5β-Androstane Pharmacolog ...

(C19)

steroid A steroid is an organic compound with four fused compound, fused rings (designated A, B, C, and D) arranged in a specific molecular configuration. Steroids have two principal biological functions: as important components of cell membranes t ...

. It is the 5β-

isomer In chemistry, isomers are molecules or polyatomic ions with identical molecular formula – that is, the same number of atoms of each element (chemistry), element – but distinct arrangements of atoms in space. ''Isomerism'' refers to the exi ...

of androstane. Etiocholanes include 5β-androstanedione,

5β-dihydrotestosterone 5β-Dihydrotestosterone (5β-DHT), also known as 5β-androstan-17β-ol-3-one or as etiocholan-17β-ol-3-one, is an etiocholane (5β- androstane) steroid as well as an inactive metabolite of testosterone formed by 5β-reductase in the liver and ...

, 3α,5β-androstanediol, 3β,5β-androstanediol,

etiocholanolone Etiocholanolone, also known as 5β-androsterone, as well as 3α-hydroxy-5β-androstan-17-one or etiocholan-3α-ol-17-one, is an etiocholane (5β-androstane) steroid as well as an endogenous 17-ketosteroid that is produced from the metabolism o ...

epietiocholanolone Epietiocholanolone, also known as 3β-hydroxy-5β-androstan-17-one or as etiocholan-3β-ol-17-one, is an etiocholane (5β-androstane) steroid as well as an inactive metabolite of testosterone that is formed in the liver. The metabolic pathway is ...

, and 3α,5β-androstanol. 17β-Ethyletiocholanes, or 5β-

pregnane Pregnane, also known as 17β-ethylandrostane or as 10β,13β-dimethyl-17β-ethylgonane, is a C21 steroid and, indirectly, a parent of progesterone. It is a parent hydrocarbon for two series of steroids stemming from 5α-pregnane (originally all ...

s, include 5β-dihydroprogesterone,

pregnanolone Pregnanolone, also known as eltanolone, is an endogenous inhibitory neurosteroid which is produced in the body from progesterone. It is closely related to allopregnanolone, which has similar properties. Biological activity Pregnanolone is a pos ...

, and

epipregnanolone Epipregnanolone, also known as 3β-hydroxy-5β-pregnan-20-one, 3β,5β-tetrahydroprogesterone, or 3β,5β-THP, is an endogenous neurosteroid. It acts as a negative allosteric modulator of the GABAA receptor and reverses the effects of potentiator ...

, as well as

pregnanediol Pregnanediol, or 5β-pregnane-3α,20α-diol, is an inactive metabolic product of progesterone. A test can be done to measure the amount of pregnanediol in urine, which offers an indirect way to measure progesterone levels in the body. From the ur ...

and

pregnanetriol Pregnanetriol, or 5β-pregnane-3α,17α,20α-triol, is a steroid and inactive metabolite of progesterone. Urine testing Urine excretion of pregnanetriol can be measured over a period of 24 hours. Elevated urine pregnanetriol levels suggest adreno ...

References

{{DEFAULTSORT:Androstane, 5β- Etiocholanes

See also

References