Secosteroid: Difference between revisions
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Revision as of 18:45, 25 November 2012
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A secosteroid is a molecule similar to a steroid but with a "broken" ring. Etym: L. "SEC-... 'to cut'"[1] - "STERE-, 'solid,' 'three dimensional,'"[2] -OID "from Gk. -OEIDES, EIDOS 'form.'"[3]
Secosteroids are very similar in structure to steroids except that two of the B-ring carbon atoms (C9 and 10) of the typical four steroid rings are not joined, whereas in steroids they are.
In humans, a well known secosteroid is Vitamin D.
References
External links
- Secosteroids at the U.S. National Library of Medicine Medical Subject Headings (MeSH)
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