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,
3α,5β-androstanediol,
3β,5β-androstanediol,
etiocholanolone,
epietiocholanolone, 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, 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 ...
.
See also
*
C19H32
References
{{DEFAULTSORT:Androstane, 5β-
Etiocholanes