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EP0268400A1 Steroidal 17alpha-silyl ethers and process to corticoids and progesterones 失效
Steroide 17-alpha-silyläther-Derivate und Herstellung von Corticoiden und Progesteronen。

Steroidal 17alpha-silyl ethers and process to corticoids and progesterones
摘要:
17β-Cyano-17α-hydroxy steroids (I) are transformed to 17α-halo silyl ethers (II) which are intermediates useful in the production of progesterones (V), 17-hydroxyprogesterones (VI), corticoids (VII) and 21-halo corticoids (III) which can readily be transformed to corticoids (VII).
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