PROCEDIMIENTO PARA LA PREPARACION DE 11-METILEN- 15-ESTEROI-DES
摘要
<p>11-Methylene- DELTA 15-steroids of Formula I <IMAGE> (I) wherein R1 is hydrogen or acyl and R2 is ethynyl, chloroethynyl or propynyl, are distinguished by a strong progestational activity and exhibit only a very low androgenic side effect.</p>
