title: A comparative structural study of the steroid epimers: 17 beta-amino-1,3,5(10)-estratrien-3-ol, 17 alpha-amino-1,3,5(10)-estratrien-3-ol, and some derivatives by 1H NMR, and x-ray diffraction analysis.
abstract: The epimers 17 beta-amino-1,3,5(10)-estratrien-3-ol and 17 alpha-amino-1,3,5(10)-estratrien-3-ol were synthesized. 17 beta-Amino-1,3,5(10)-estratrien-3-ol was prepared by catalytic hydrogenation of the estrone-oxime. The 17 alpha-amino epimer was obtained from estradiol, via tosylate, followed by nucleophilic displacement by sodium azide and subsequent reduction with LiAlH4. They were characterized by spectroscopic methods. Determination of the crystal structures of 3-(toluene-4-sulfonyloxy)-17 alpha-1,3,5(10)-estratriene, 3-(toluene-4-sulfonyloxy)-17-alpha-amino,1,3,5(10)-estratriene hydrochloride, 17 beta-acetylamino-1,3,5(10)-estratriene-3-ol, and 3-acetoxy-17 beta-acetylamino-1,3,5(10)-estratriene enabled us to characterize the structure of the 17 alpha and 17 beta amino epimers for the first time.
authors.affiliation: Departamento de Farmacología, Facultad de Medicina, Universidad Nacional Autónoma de México (UNAM), México, D.F., México.
authors.forename: C
authors.initials: C
authors.lastname: Lemini
authors.forename: E
authors.initials: E
authors.lastname: Cruz-Ramos
authors.forename: R A
authors.initials: RA
authors.lastname: Toscano
authors.forename: R
authors.initials: R
authors.lastname: Cruz-Almanza
mesh_terms: D018360:Crystallography, X-Ray; D045166:Estradiol Congeners / Q000737:chemistry*; D009682:Magnetic Resonance Spectroscopy; D013058:Mass Spectrometry; D015394:Molecular Structure
chemical_list: D045166:Estradiol Congeners