A PROCESS FOR THE PRODUCTION OF 19-NORPREGN-4-EN-3,20-DIONE-17.ALPHA.-OL (GESTONORONE) AND INTERMEDIATES THEREFOR.
申请人:Richter Gedeon Nyrt.
公开号:EP3083655B1
公开(公告)日:2018-02-07
A PROCESS FOR THE PRODUCTION OF 19-NORPREGN-4-EN-3,20-DIONE-17ALPHA-OL(GESTONORONE) AND INTERMEDIATES THEREFOR
申请人:RICHTER GEDEON NYRT.
公开号:US20160297848A1
公开(公告)日:2016-10-13
The present invention relates to a new stereoselective process for the synthesis of 17(α)-17-acetyl-17-hydroxy-estr-4-en-3-one of formula (I), as well as to the new intermediates of the process. The 17(α)-17-acetyl-17-hydroxy-estr-4-en-3-one (gestonorone) is an important intermediate in the synthesis of the active ingredients having progestogen activity—such as gestonorone capronate and nomegestroi acetate. Formulas (I), (II) and (III).
US9562067B2
申请人:——
公开号:US9562067B2
公开(公告)日:2017-02-07
The synthesis of 3β-hydroxyestr-4-en-17-one and 3β-hydroxiandrost-4-en-17-one