| 摘要 |
<p>The present invention is a novel process for the transformation of 11beta, 17alpha dihydroxy-6alpha-methylpregna-1,4-diene-3,20-dione 17-acetate (III), to 11beta, 17alpha,21-trihydroxy-6alpha-methylpregna-1,4-diene-3,20-dione 21-acetate (VI).</p> |
