Term: steroids
https://doi.org/10.1351/goldbook.S06005

Definition:
Naturally occurring compounds and synthetic analogues, based on the cyclopenta[a]phenanthrene carbon skeleton, partially or completely hydrogenated; there are usually methyl groups at C-10 and C-13, and often an alkyl group at C-17. By extension, one or more bond scissions, ring expansions and/or ring contractions of the skeleton may have occurred. Natural steroids are derived biogenetically from triterpenoids. S06005.png 

Related Terms:
1) alkyl group (http://doi.org/10.1351/goldbook.A00228).
2) triterpenoids (http://doi.org/10.1351/goldbook.T06510).

Image: Not defined (https://goldbook.iupac.org/img/inline/S06005.png) 

Source: PAC, 1995, 67, 1307. 'Glossary of class names of organic compounds and reactivity intermediates based on structure (IUPAC Recommendations 1995)' on page 1367 (https://doi.org/10.1351/pac199567081307)

Citation: 'steroids' in IUPAC Compendium of Chemical Terminology, 5th ed. International Union of Pure and Applied Chemistry; 2025. Online version 5.0.0, 2025. https://doi.org/10.1351/goldbook.S06005

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