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13 C NMR studies of epimeric 20( R,S )‐hydroxy‐23‐norcholanoic acid derivatives
Author(s) -
Seldes Alicia M.,
Maier Marta S.,
Gros Eduardo G.
Publication year - 1986
Publication title -
magnetic resonance in chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.483
H-Index - 72
eISSN - 1097-458X
pISSN - 0749-1581
DOI - 10.1002/mrc.1260240310
Subject(s) - chemistry , steric effects , conformational isomerism , chemical shift , stereochemistry , carbon 13 nmr , nmr spectra database , computational chemistry , spectral line , organic chemistry , molecule , physics , astronomy
13 C NMR spectra for sixteen 20‐hydroxy‐23‐norcholanoic acid derivatives have been obtained and individual resonances assigned. The different chemical shifts due to preferred conformers depending on the C‐20 configuration are rationalized in terms of steric interactions using model compounds.