HALOGENATED PROGESTERONE DERIVATIVES AS ANTILUTEINIZERS

Abstract
When 11[beta]-hydroxyprogesterone (11[beta]-OH-P) was halogenated with fluorine, it acquired a considerable antiluteinizing potency, superior to progesterone and many times greater than that of 19-nor-[alpha]-ethinyletestos-terone. Since 9[alpha]-fluoro-11[beta]-hydroxyprogesterone showed resistance to intra-heptic inactivation, the authors discussed whether it would be of value in studies of antiovulatory action of gestagens in women.