Method for the production of 4-(17$g(a)-alkoxymethyl-17$g(b)-substituted 3-oxoestra-4,9-dien-11$g(b)-yl) benzaldehyde-(1e)-oxime derivatives 9-dien-11byl)benzaldehyde-(1-e)-oxime derivatives
申请人:——
公开号:US20040059141A1
公开(公告)日:2004-03-25
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.