Ketosteroid

File:Trimethyl steroid-nomenclature.png

Steroid skeleton. Carbons 18 and above can be absent.

File:Androstendion.svg

Androstenedione

File:Androsteron.svg

Androsterone

File:Estrone structure.svg

Estrone

A ketosteroid, or an oxosteroid, is a steroid in which a hydrogen atom has been replaced with a ketone (C=O) group.

A 17-ketosteroid is a ketosteroid in which the ketone is located specifically at the C17 position (in the upper right corner of most structure diagrams).

Examples of 17-ketosteroids include:

• Androstenedione
• Androstanedione
• Androsterone
• Dehydroepiandrosterone
• Epiandrosterone
• Epietiocholanolone
• Etiocholanolone

17-Ketosteroids are endogenous steroid hormones.

See also

• Hydroxysteroid
• Hydroxysteroid dehydrogenase

External links

• Template:MeshName
• MedlinePlus Encyclopedia: 003460

Template:Steroid classification

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