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Cholestane is a saturated tetracyclic steroid biosynthetically derived from triterpenoids. This 27-carbon biomarker is produced by diagenesis of cholesterol and is one of the most abundant biomarkers in the rock record. [ 2 ]
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Another category of solanum alkaloids is based on the spirosolane skeleton. In these compounds, the E-ring is a tetrahydrofuran to which a piperidine is directly attached via a spiro compound. An example of such a steroid alkaloid is tomatidenol, which is prevalent across various species within the genus Solanum. [26]
This is an accepted version of this page This is the latest accepted revision, reviewed on 3 March 2025. Polycyclic organic compound having sterane as a core structure This article is about the family of polycyclic compounds. For the drugs, also used as performance-enhancing substances, see Anabolic steroid. For the scientific journal, see Steroids (journal). For the Death Grips EP, see ...
Major examples include the pregnanes pregnenolone sulfate (PS), epipregnanolone, and isopregnanolone (sepranolone), the androstanes dehydroepiandrosterone (DHEA; prasterone), and dehydroepiandrosterone sulfate (DHEA-S; prasterone sulfate), and the cholestane 24-hydroxycholesterol (NMDA receptor-selective; very potent). [17]
Examples include fusidic acid, lanosterol, and stigmasterol. Cholestene is a widely available chemical, used and sold commercially with red yeast rice. There are also derivatives of the molecule, such as 5-cholestene and 2-cholestene. These molecules differ by the placement of a double bond in one of its cyclohexane rings.
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Numbering of the carbon atoms. In steranes, the side chain at C-17 varies. Steranes constitute a group of alkane organic compounds with a cyclopentane-fused hydrogenated phenanthrene structure as the parent nucleus, and they derived from steroids or sterols via diagenetic and catagenetic degradation, such as hydrogenation.