[EN] A PROCESS FOR MAKING ESTRA-4,9(10)-DIENE STEROIDS<br/>[FR] PROCEDE PERMETTANT LA PRODUCTION DE STEROIDES ESTRA-4,9(10)-DIENE
申请人:BRIDGE ORGANICS CO
公开号:WO2002101014A2
公开(公告)日:2002-12-19
A novel process for making estra-4,9(10)-diene-3,17-dione steroids from readily available 19-nor-androst-4-ene-3-one steroids by a straightforward three-step process. Products of this process are important intermediates in the preparation of biologically active substances.