Feb 7, 2020
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Abstract
Compounds possessing the skeleton of cyclopenta[a]phenanthrene or a skeleton derived therefrom by one or more bond scissions or ring expansions or contractions. Methyl groups are normally present at C-10 and C-13. An alkyl side chain may also be present at C-17. T hey include cholesterol, numerous hormones, precursors of certain vitamins, bile acids, alcohols (ST EROLS), and certain natural drugs and poisons. Qeios · Definition, February 7, 2020