Routes to 2,19-oxido-delta4,6-3-keto steroids.
D000731:Androstanes / Q000138:chemical synthesis*; D001952:Bridged-Ring Compounds / Q000138:chemical synthesis; D007659:Ketones; D013057:Spectrum Analysis
D000731:Androstanes; D001952:Bridged-Ring Compounds; D007659:Ketones