title: Synthesis of 3 -hydroxy-  5 -steroids by sodium borohydride reduction of dienol trimethylsilyl ether derivatives of 3-oxo-  4 -steroids.
mesh_terms: D000438:Alcohols / Q000138:chemical synthesis*; D000731:Androstanes / Q000138:chemical synthesis*; D001894:Borohydrides; D002247:Carbon Isotopes; D055598:Chemical Phenomena; D002621:Chemistry; D002776:Cholestanes; D002784:Cholesterol / Q000138:chemical synthesis*; D002855:Chromatography, Thin Layer; D006854:Hydrocortisone; D007664:Ketosteroids; D013058:Mass Spectrometry; D010084:Oxidation-Reduction; D011278:Pregnanes / Q000138:chemical synthesis*; D012825:Silicon; D013739:Testosterone
chemical_list: D000438:Alcohols; D000731:Androstanes; D001894:Borohydrides; D002247:Carbon Isotopes; D002776:Cholestanes; D007664:Ketosteroids; D011278:Pregnanes; D013739:Testosterone; D002784:Cholesterol; D006854:Hydrocortisone; D012825:Silicon