7α-biscarbonyl-substituted steroid compounds

Organic compounds -- part of the class 532-570 series – Organic compounds – Heterocyclic carbon compounds containing a hetero ring...

Reexamination Certificate

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C540S041000, C540S043000, C549S265000, C562S553000, C562S554000

Reexamination Certificate

active

07411062

ABSTRACT:
The present invention involves intermediates, including a 7α-substituted steroid (II),and processes which are used to prepare eplerenone, a useful pharmaceutical agent.

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