New process for the preparation of 21-hydroxy-20-keto-delta 16-steroids and new intermediate compounds formed in this process
申请人:GIST-BROCADES N.V.
公开号:EP0123736A1
公开(公告)日:1984-11-07
The invention relates to a new process for the preparation of 21-hydroxy-20-keto-steroids from 17-isocyano-sulfonylmethylene-steroids whereby simultaneously an unsaturated bond is introduced between C16 and C17. Furthermore, the invention relates to new intermediate compounds formed in this process and their preparation.