| 摘要 |
<p>The process of the present invention is a process for the preparation of an 11-oxygenated steroid of formula (II) which comprises (1) contacting a 9α-halo steroid of formula (I) with a metal selected from the group consisting of tin (0), a tin (II) salt, lead (0) or a lead (II) salt, a hydrogen atom donor and an initiator.</p> |
