Method for the production of 4-(17$g(a)-methyl substituted 3-oxoestra-4 9-dien-11$g(b)-yl)benzaldehyd-(1e or 1z)-oximes
申请人:——
公开号:US20040063172A1
公开(公告)日:2004-04-01
The invention relates to a process for the production of 4-(17&agr;-methyl-substituted 3-oxoestra-4,9-dien-11&bgr;-yl)benzaldehyde-(1E or 1Z)-oximes of general formula (I), in which R
1
is a hydrogen atom, a C
1-6
-alkyl radical or a C
n
F
2n+1
radical, whereby n is 1, 2 or 3, R
2
is a C
1-4
-alkyl radical, X is an OH group in E- or Z-position, and Y is an OC
1-6
-alkyl group, an SC
1-6
-alkyl group or an OCH
2
C
n
F
2+1
group, whereby n is 1, 2 or 3, which provides the target compounds of formula (I) with a high yield and good selectivity.
1
本发明涉及一种制备4-(17α-甲基取代的3-氧代雌-4,9-二烯-11β-基)苯甲醛-(1E或1Z)-肟的方法,其通式为(I),其中R1为氢原子、C1-6烷基基团或CnF2n+1基团,其中n为1、2或3,R2为C1-4烷基基团,X为E-或Z-位的OH基团,Y为OC1-6烷基基团、SC1-6烷基基团或OCH2CnF2+1基团,其中n为1、2或3,该方法提供了通式(I)的目标化合物高产率和良好选择性。