| 摘要 |
<p>A process for preparing flumethasone (6a,9a-diffluoro-11β,17a,21-trihydroxy-16a-methyl-pregna-1,4-diene-3,20-dione), fulmethasone 21-acetate or its 17-carboxyl androsten analogue which process comprises reacting a compound of formula (IIIa) with an electrophilic fluorination agent.</p> |
