process for the production of 4 - androsten - 3, 17 - dion and 1.4 androstadien - 3.17 - dion.

摘要

Process for manufacturing 4-androstene-3,17 dion and 1,4 androstadiene-3,17-dion of the general formula (I) where ..... is a simple bond or a double bond, characterized by the fact that alpha -sitosterine of formula (II) is fermented with a culture of a strain of micro-organisms suitable for breaking down the lateral sterine chain.