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1.发明公开PROCESS AND NEW INTERMEDIATES FOR THE PREPARATION OF STEROIDS WITH A PROGESTOGEN ACTIVITY 有权工艺，新中间体固醇与一个PROGESTERONISCHEN活动的生产
公开(公告)号：EP1525214A2
公开(公告)日：2005-04-27
申请号：EP03784129.3
申请日：2003-07-31
发明人： GRISENTI, Paride , PECORA, Fabio , VERZA, Elisa , LEONI, Massimo , BOSSI, Laura
IPC分类号： C07J11/00
CPC分类号： C07J1/0059 , C07J11/00 , C07J21/008
摘要： The present invention relates to a new process of synthesis and to some new intermediates for the preparation of steroids with progestogen activity, more particularly, for the preparation of Desogestrel of formula (I). Said process is characterized by the regioselective reduction of the compound of formula (XIIa) to give the intermediate of formula (XIVa).
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2.发明授权PROCESS AND NEW INTERMEDIATES FOR THE PREPARATION OF STEROIDS WITH A PROGESTOGEN ACTIVITY 有权工艺，新中间体固醇与一个PROGESTERONISCHEN活动的生产
公开(公告)号：EP1525214B1
公开(公告)日：2006-12-27
申请号：EP03784129.3
申请日：2003-07-31
发明人： GRISENTI, Paride , PECORA, Fabio , VERZA, Elisa , LEONI, Massimo , BOSSI, Laura
IPC分类号： C07J11/00
CPC分类号： C07J1/0059 , C07J11/00 , C07J21/008
摘要： The present invention relates to a new process of synthesis and to some new intermediates for the preparation of steroids with progestogen activity, more particularly, for the preparation of Desogestrel of formula (I). Said process is characterized by the regioselective reduction of the compound of formula (II) to give the intermediate of formula (III).
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