title: Analogues of [(triethylsilyl)ethynyl]estradiol as potential antifertility agents.
abstract: Various 17 alpha-ethynylsteroids were prepared and derivatized as the corresponding triethylsilyl compounds 2-35, which were examined for a ratio of antifertility to estrogenic activity that would be more beneficial than that of the presently used agent. Among the triethylsilyl compounds evaluated, only 23 displayed this desired ratio, although two other compounds without the triethylsilyl moiety, 18 and 26, shared similar characteristics.
authors.affiliation: Bio-Organic Chemistry Laboratory, SRI International, Menlo Park, California 94025.
authors.forename: R H
authors.initials: RH
authors.lastname: Peters
authors.forename: D F
authors.initials: DF
authors.lastname: Crowe
authors.forename: M A
authors.initials: MA
authors.lastname: Avery
authors.forename: W K
authors.initials: WK
authors.lastname: Chong
authors.forename: M
authors.initials: M
authors.lastname: Tanabe
mesh_terms: D000818:Animals; D003270:Contraceptive Agents / Q000138:chemical synthesis*; D004958:Estradiol / Q000138:chemical synthesis* / Q000494:pharmacology; D005260:Female; D008297:Male; D051381:Rats; D011919:Rats, Inbred Strains; D013329:Structure-Activity Relationship
chemical_list: D003270:Contraceptive Agents; D004958:Estradiol