NOVEL DELTA-4,9-PREGNANE DERIVATIVES, THEIR USE AS PROGESTATIONAL AND/OR OVULATION-INHIBITING AGENTS AND PROCESS FOR THEIR PREPARATION

摘要

New and useful steroids of the pregnane series and compositions therefor are disclosed of the formula: (I) wherein R1 is selected from the group consisting of H, F, OH, and OR2, and R2 is carbacyl of one to eighteen carbon atoms, which steroids exhibit useful pharmacological utility, to wit, progestational and/or ovulation-inhibiting activity.