title: Regio and stereospecific synthesis of 11 beta-substituted 19-norsteroids. Influence of 11 beta-substitution on progesterone receptor affinity - (1).
mesh_terms: D000818:Animals; D004997:Ethinyl Estradiol / Q000031:analogs & derivatives* / Q000138:chemical synthesis / Q000378:metabolism; D005260:Female; D051379:Mice; D009640:Norethindrone / Q000031:analogs & derivatives* / Q000138:chemical synthesis / Q000378:metabolism; D011817:Rabbits; D011960:Receptors, Estrogen / Q000378:metabolism; D011980:Receptors, Progesterone / Q000378:metabolism*; D013329:Structure-Activity Relationship; D014599:Uterus / Q000378:metabolism
chemical_list: D011960:Receptors, Estrogen; D011980:Receptors, Progesterone; D004997:Ethinyl Estradiol; D009640:Norethindrone