Invention Grant
US08110691B2 Industrial process for the synthesis of 17α-acetoxy-11β-[4-(N,N-dimethyl-amino)-phenyl]-19-norpregna-4,9-diene-3,20-dione and new intermediates of the process 有权
合成17α-乙酰氧基-11β-[4-(N,N-二甲基 - 氨基) - 苯基] -19-去甲基-4,9-二烯-3,20-二酮的工业方法和该方法的新中间体

Industrial process for the synthesis of 17α-acetoxy-11β-[4-(N,N-dimethyl-amino)-phenyl]-19-norpregna-4,9-diene-3,20-dione and new intermediates of the process
Abstract:
A new industrial process for the synthesis of solvate-free 17α-acetoxy-11β-[4-(N,N-dimethyl-amino)-phenyl]-19-norpregna-4,9-diene-3,20-dione [CDB-2914] of formula (I) which is a strong antiprogestogene and antiglucocorticoid agent. The invention also relates to compounds of formula (VII) and (VIII) used as intermediates in the process.
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