| 摘要 |
THIS INVENTION RELATES TO PROCESSES FOR THE PRODUCTION OF 3-OXO-PREGNANE-21, 17- CARBOLACTONES OF FORMULA II AS WELL AS 3-OXO-PREGN-4-ENE-21, 17-CARBOLACTONES OF FORMULA III BY THE METAL-FREE OXIDATION OF 17-(3-HYDROXYPROPYL)-3, 17-DIHYDROXYANDROSTANES OF FORMULA I IN ADDITION, THE INVENTION RELATES TO THE DICHLOROMETHANE HEMISOLVATE OF 6B, 7B, 15?,16?- DIMETHYLENE-3-OXO-17?-PREGNAN-5?-OL-21,-17-CARBOLACTONE (IV) AS SUCH. |
