This invention relates to a process for the production of 4-(17&agr;-alkoxymethyl-17&bgr;-substituted-3-oxoestra-4,9-dien-11&bgr;-yl)benzaldehyde-(1E)-oxime derivatives of general formula (I)
1
in which R means an amino group, an O—C
1-7
-alkyl- or O-aryl radical, an S—C
1-7
-alkyl- or S-aryl radical, an NH—C
1-7
-alkyl- or NH-aryl radical or an N-di-C
1-7
-alkyl radical, and R
1
means a hydrogen atom or a C
1-6
-alkyl radical, which yields the target compounds of formula (I) with high yield and selectivity.
本发明涉及一种生产4-(17&agr;-烷氧甲基-17&bgr;-取代-3-氧代雌-4,9-二烯-11&bgr;-基)
苯甲醛-(1E)-
肟衍
生物的方法,其通式为(I)1,其中R表示
氨基、O—C1-7-烷基或O-芳基基团、S—C1-7-烷基或S-芳基基团、NH—C1-7-烷基或NH-芳基基团或N-二C1-7-烷基基团,R1表示氢原子或C1-6-烷基基团,该方法能以高收率和选择性产生目标化合物(I)的方法。