Method for the production of...

Details Method for the production of... Method for the production of...

2007-05-08

2007-05-08

Badio, Barbara P. (Department: 1617)

Organic compounds -- part of the class 532-570 series

Organic compounds

Cyclopentanohydrophenanthrene ring system containing

Reexamination Certificate

active

10416029

ABSTRACT:
The invention relates to a method for the production of 4-(17α substituted 3-oxoestra-4,9-dien-11β-yl)benzaldehyd-(1E or 1Z)-oximes of general formula (I), where R1═H, C1-6alkyl or a CnF2n+1group; R2═C1-4alkyl, X=E- or Z-OH; and Y═O—C1-6alkyl, S—C1-6alkyl or O—CH2CnF2n+1, where n=1, 2 or 3, which produces the target compounds of formula (I) with high yield and selectivity.

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