title: Asymmetric induction in the synthesis of thiophene-containing steroidlike molecules via olefinic cyclization. Precoiling as model description for the stereochemical course of the reaction.
mesh_terms: D000475:Alkenes; D055598:Chemical Phenomena; D002621:Chemistry; D013237:Stereoisomerism; D013260:Steroids, Heterocyclic / Q000138:chemical synthesis*; D013876:Thiophenes / Q000138:chemical synthesis*
chemical_list: D000475:Alkenes; D013260:Steroids, Heterocyclic; D013876:Thiophenes