Process for obtaining norelgestromin in different relations...

Details Process for obtaining norelgestromin in different relations... Process for obtaining norelgestromin in different relations...

2008-03-18

2008-03-18

Badio, Barbara P. (Department: 1617)

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

Organic compounds

Cyclopentanohydrophenanthrene ring system containing

Reexamination Certificate

active

10877858

ABSTRACT:
The present invention is related to an oxime of the 13β-ethyl-17α-hydroxi-18,19-dinorpregn-4-en-20-in-3-o (norelgestromin) of Formula I with a relation of isomers E/Z between 1.3 and 1.6and the method of producing the oxime.

REFERENCES:
patent: 3532689 (1970-10-01), Shroff
patent: 4027019 (1977-05-01), Shroff
patent: 2005/0032763 (2005-02-01), Tuba et al.
patent: 2005/0032764 (2005-02-01), Tuba et al.
patent: 1122592 (1982-04-01), None
NDA 21-180, 2001.

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