Industrial process for the synthesis of nomegestrol-acetate

A process for the synthesis of Nomegestrol-acetate of formula (I)

• characterized by
• adding the solid starting steroid of formula (II)
• into an ethanolic solution at 50-78° C., which contains 0.05-0.2 mass fraction of 10% Pd/C catalyst, and 0.01-0.2 mass fraction of acetic acid calculated on the weight of the starting steroid of formula (II), then, after 3-15 min reaction time the catalyst is filtered off, the filtrate is concentrated to one fourth in vacuum, water is added to residue and the precipitated product of formula (I) is filtered off at 0-25° C.