Pregnane
Chemical compound
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 allopregnane) and 5β-pregnane (17β-ethyletiocholane). It has a gonane core.
5β-Pregnane is the parent of pregnanediones, pregnanolones, and pregnanediols, and is found largely in urine as a metabolic product of 5β-pregnane compounds.
01Pregnanes
Pregnanes are steroid derivatives with carbons present at positions 1 through 21.
Most biologically significant pregnane derivatives fall into one of two groups: pregnenes and pregnadienes. Another class is pregnatrienes.
02Pregnenes
Pregnenes have a double bond. Examples include:
03Pregnadienes
Pregnadienes have two double bonds. Examples include:
Sources and credits
This article is adapted from the Wikipedia article “Pregnane”, written by its contributors and licensed under CC BY-SA 4.0. Fathomly has changed the layout, removed citation markers, navigation and maintenance notices, and adjusted punctuation. This adapted version is shared under the same license. For references, see the original article.
Images, from Wikimedia Commons:
- Pregnane.svg by Calvero., Public domain
- Steroid numbering.svg by Vaccinationist, Public domain
- Cortisone structure.png by Edgar181, Public domain
- Cyproterone acetate.svg by Unknown author, Public domain
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