Drug – bio-affecting and body treating compositions – Designated organic active ingredient containing – Cyclopentanohydrophenanthrene ring system doai
Reexamination Certificate
2005-10-18
2005-10-18
Badio, Barbara P. (Department: 1617)
Drug, bio-affecting and body treating compositions
Designated organic active ingredient containing
Cyclopentanohydrophenanthrene ring system doai
C540S065000
Reexamination Certificate
active
06956031
ABSTRACT:
This invention relates to new 19-nor-17α-pregna-1,3,5(10)-trien-17β-ols with a 21,16α-lactone ring with a long-chain substituent in 11β-position of general formula IIin which R11is a long-chain alkyl radical that has a nitrogen atom that can be substituted in terminal position with a perfluoroalkyl group. The compounds act in a tissue-selective manner as pure antiestrogens and are suitable for the production of pharmaceutical agents because of these properties.
Bohlmann Rolf
Elger Walter
Hillisch Alexander
Hoffmann Jens
Badio Barbara P.
Millen White Zelano & Branigan P.C.
Schering Aktiengesellschaft
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