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| Names | |
|---|---|
| IUPAC name 5ξ-Pregnane[1] | |
| Systematic IUPAC name (1S,3aS,3bS,5aΞ,9aS,9bS,11aR)-1-Ethyl-9a,11a-dimethylhexadecahydro-1H-cyclopenta[a]phenanthrene | |
| Identifiers | |
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3D model (JSmol) | |
| ChEBI | |
| ChemSpider |
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| UNII | |
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| Properties | |
| C21H36 | |
| Molar mass | 288.511 g/mol |
| Density | 0.926 g/ml |
Except where otherwise noted, data are given for materials in theirstandard state (at 25 °C [77 °F], 100 kPa). | |
Pregnane, also known as17β-ethylandrostane or as10β,13β-dimethyl-17β-ethylgonane, is a C21steroid and, indirectly, aparent ofprogesterone. It is a parenthydrocarbon for two series of steroids stemming from5α-pregnane (originallyallopregnane) and5β-pregnane (17β-ethyletiocholane). It has agonane core.
5β-Pregnane is the parent ofpregnanediones,pregnanolones, andpregnanediols, and is found largely inurine as ametabolic product of 5β-pregnanecompounds.
Pregnanes aresteroid derivatives with carbons present at positions 1 through 21.
Most biologically significant pregnane derivatives fall into one of two groups:pregnenes andpregnadienes. Another class ispregnatrienes.
Pregnenes have adouble bond. Examples include:
Pregnadienes have twodouble bonds. Examples include:
Media related toPregnane at Wikimedia Commons
