Revised Section F: Natural Products and Related Compounds (IUPAC Recommendations 1999)

Steroids

Continued from Alkaloids - L to Y

The numbering of additional carbon atoms on a steriod sidechain was changed in the IUPAC-IUB Nomenclature of Steroid (Recommendations 1989). The older numbering is still used by Chemical Abstracts Service. The differences in the two numbering systems are shown in the following general formulae. As a consequence the numbering of campestane, ergostane, gorgostane, poriferastane and stigmastane was changed accordingly. error details

IUPAC-IUBMB numberingCAS numbering

Move direct to steroids starting with A,   B,   C,   E,   F,   G,   P,   S.

 
AndrostaneBufanolide
 
Campestane
IUPAC numbering
Campestane error details
CAS numbering
Cardanolide error detailsCholane

Cholestane

 
Ergostane
IUPAC numbering
Ergostane
CAS numbering
 
EstraneFurostan
 
Gonane

 
Gorgostane
IUPAC numbering
Gorgostane
CAS numbering
Poriferastane
IUPAC numbering
Poriferastane
CAS numbering
 
PregnaneSpirostan
Stigmastane
IUPAC numbering
Stigmastane
CAS numbering


Continue with Terpenoids A to G
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