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205Tl nuclear magnetic resonance study of the thallium complex of lasalocid (X-537A)

✍ Scribed by Richard W Briggs; Felicia A Etzkorn; James F Hinton

Publisher
Elsevier Science
Year
1980
Weight
355 KB
Volume
37
Category
Article
ISSN
0022-2364

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An even more pronounced effect is observed in the 13C NMR spectra of spiro steroids. Signals of axial carbon atoms [(C(aJ are shifted upfield by 1.2-6.6 ppm compared with the respective signal of equatorial carbons [(C(a,,)] of the same type (Tables 2 and3). The only exception is the pair of compoun