| 摘要 |
1. Claims (for the Contracting States : BE, CH, DE, GB, IT, LI, LU, NL, SE) 3,20-dione 11 beta-hydroxy-pregn-4-ene S-21 thioacetate-17-butyrate. 1. Claims (for the Contracting State : AT) Process for the preparation of 3,20-dione 11 beta-hydroxy-pregn-4-ene S-21-thioacetate-17-butyrate and 3,20-dione 11 beta-hydroxy-pregn-4-ene S-21-thiopropionate-17-butyrate, characterized in that it comprises reacting a 21-sulphonate steroid of formula : see diagramm : EP0141684,P9,F2 in which R is a lower alkyl with an alkali metal thiocarboxylate of formula : M-S-CO-R1 in which M is an alkali metal atom and R1 methyl or ethyl.
|
