| 摘要 |
20,20-Ethylene-21-oxosteroids of the formula WHICH ARE USEFUL AS INTERMEDIATES IN THE PRODUCTION OF CARDIOACTIVE STEROIDS HAVING A LACTONE AT THE 17-POSITION, ARE PRODUCED BY REACTING A 20-KETO-21-SULFONYLOXY STEROID WITH DIMETHYL-SULFOXONIUM METHYLIDE.
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