WORLEY, Chief Judge.
Fried and Herz appeal from the Board of Appeals' affirmance of the examiner's rejection of claims 6, 20 and 21, the remaining claims of their application.
The invention relates to steroids of the pregnene series. The claims in dispute are directed to unsaturated pregnene steroids having a 9,11 epoxy group and an alkylsulfonoxy or iodo group in the 21 position.
Claim 6 reads:
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