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Investigations on sterols XXVII: Synthesis of some stereoisomeric steroids and determination of the additional chemical shifts of the 18- and 19-methyl protons

✍ Scribed by S. J. Halkes; E. Havinga

Publisher
Elsevier Science
Year
2010
Tongue
English
Weight
679 KB
Volume
84
Category
Article
ISSN
0165-0513

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## Abstract This paper reports 261 substituent increments for the ^1^HNMR. 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 diff