NOVEL ESTRAN E DERIVATIVE AND MANUFACTURE

摘要

Estrane derivatives of the general formula I (I) wherein one of the substituents X or Z signifies a hydrogen atom and the other together with Y represents a carbon-carbon bond, or wherein the substituents X and Z represent hydrogen atoms and Y represents an alpha -position hydroxy group or a beta -position alkyl group with up to 6 carbon atoms, are valuable intermediates for preparation of pharmacologically effective substances.