[EN] PROCESS FOR THE PRODUCTION OF 16,17-[(CYCLOHEXYLMETHYLEN)BIS(OXY)]-11,21-DIHYDROXY-PREGNA-1,4-DIEN-3,20-DION OR ITS 21-ISOBUTYRAT BY TRANSKETALISATION<br/>[FR] PROCEDE DE PRODUCTION DU 16,17-[(CYCLOHEXYLMETHYLENE)BIS(OXY)]-11,21-DIHYDROXY-PREGNA-1,4-DIENE-3,20-DIOE OU SON 21-ISOBUTYRATE PAR TRANSCETALISATION
申请人:BYK GULDEN LOMBERG CHEM FAB
公开号:WO2002038584A1
公开(公告)日:2002-05-16
The invention relates to a process for the preparation of 16,17-[(cyclohexylmethylene)bis(oxy)]-11,21-dihydroxypregna-1,4-diene-3,20-dione[11β,16α(R)] and similar compounds, by reaction of an appropri-ate 16,17-ketal with cyclohexanealdehyde.
本发明涉及一种制备16,17-[(环己基亚甲基)双(氧)]-11,21-双羟基孕-1,4-二烯-3,20-二酮[11β,16α(R)]及类似化合物的方法,通过将适当的16,17-环缩酮与环己醛反应制备。