Substituted steroid compounds which represent selective inhibitors of 17\u03b2-hydroxysteroid dehydrogenase type I and, in addition, which may represent inhibitors of the steroid sulfatase, salts thereof, pharmaceutical preparations containing these compounds, and a process for the preparation of these compounds. In accordance with the present invention, R=a hydrogen or a C1-C20 hydrocarbon group optionally comprising one or more heteroatoms, and the \u2261SiOH and \u2261SiOR units belong to at least one identical or different silicon compound P. The switch is connected between the corresponding delay stage output and the transistor gate, the current source is connected between a power supply and the transistor drain, and the transistor source is connected to ground. The gates are present on opposite sides of a silicon film having a vertical thickness of about 80 nm or less which is present in the gate region.