process for the production of the new 20beta - hydroxy - 9 - oxo 1,2,3,4,10,19 - hexanor - 5.9 - seco - pregnan - 5 - acid

摘要

The present invention relates to a microbiological method for producing 20beta-hydroxy-9-oxo-1,2,3,4,10,19-hexanor-5,9-seco-pregnan-5-oic acid, an intermediate for known steroids, from 3beta, 20beta-dihydroxypregn-5-ene or 2beta, 20-dihydroxypregn-5-ene.