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Substituent Increments for the 1 H‐NMR. Chemical Shifts of the 18‐ and 19‐Methyl Protons of Steroids. Part I: 9β, 10α( Retro )‐Steroids
Author(s) -
Englert Gerhard,
Arnold Wolf,
Els Hans,
Fürst Andor,
Meier Arthur,
Meister Walter
Publication year - 1974
Publication title -
helvetica chimica acta
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.74
H-Index - 82
eISSN - 1522-2675
pISSN - 0018-019X
DOI - 10.1002/hlca.19740570609
Subject(s) - chemistry , substituent , chemical shift , androstane , solvent , spectral line , nmr spectra database , medicinal chemistry , stereochemistry , organic chemistry , physics , astronomy
This paper reports 261 substituent increments for the 1 HNMR. chemical shifts (solvent: CDCl 3 ) of the 18‐ and 19‐methyl protons of 9β, 10α( retro )‐steroids relative to 5β,9β,10α,‐androstane. The increments were calculated by a least‐squares procedure from 1334 spectra of 759 different steroids.