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US 7,002,028 B2Granted
5-androsten-3β-ol steroid intermediates and processes for their preparation
AssigneeWarner-Lambert Company
InventorsMichael J. White, Peter Guillaume Marie Wuts, Doris Beck
Life of this patent
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Abstract
The present invention provides 5-androsten-3β-ol steroid intermediates and processes for their preparation.
Claims2
A 7β, 11α-dihydroxy steroid of the formula (IV)
- where R3 is
- —CO—R4
- R4 is H C1–C5 alkyl;
- and
- R17 and R18 together form ═O.
2 more elements
Dependencies are inferred from the claim text.