title: thienyl analogues of the alkaloids. II. 3-Thienyl analogues of ephedrine and psi-ephedrine.
mesh_terms: D000470:Alkaloids; D004809:Ephedrine / Q000138:chemical synthesis*; D009682:Magnetic Resonance Spectroscopy; D013055:Spectrophotometry, Infrared; D013237:Stereoisomerism; D013876:Thiophenes / Q000138:chemical synthesis*
chemical_list: D000470:Alkaloids; D013876:Thiophenes; D004809:Ephedrine