title: Synthesis and biological activity of some 6,7-dihalo-delta5-pregnenes and some 6,6-dihalo-5,7-cyclo-5beta-pregnane derivatives.
mesh_terms: D000818:Animals; D003525:Cyclosteroids / Q000138:chemical synthesis / Q000494:pharmacology; D004305:Dose-Response Relationship, Drug; D005260:Female; D011278:Pregnanes / Q000138:chemical synthesis* / Q000494:pharmacology; D011283:Pregnenes / Q000138:chemical synthesis* / Q000494:pharmacology; D011372:Progestins / Q000138:chemical synthesis* / Q000494:pharmacology; D011817:Rabbits; D013258:Steroids, Chlorinated / Q000138:chemical synthesis / Q000494:pharmacology; D013259:Steroids, Fluorinated / Q000138:chemical synthesis / Q000494:pharmacology; D013329:Structure-Activity Relationship; D014599:Uterus / Q000187:drug effects
chemical_list: D003525:Cyclosteroids; D011278:Pregnanes; D011283:Pregnenes; D011372:Progestins; D013258:Steroids, Chlorinated; D013259:Steroids, Fluorinated