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On the assignment of the carbon-13 NMR spectrum of bilirubin

✍ Scribed by Doron Kaplan; Gil Navon

Publisher
John Wiley and Sons
Year
1980
Tongue
English
Weight
389 KB
Volume
13
Category
Article
ISSN
0749-1581

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✦ Synopsis

Abstract

An individual assignment of certain peaks in the proton and ^13^C NMR spectra of bilirubin and of bilirubin dimethyl ester is described. The assignment was achieved through the spectra of vinylneoxanthobilirubinic acid and by off‐resonance decoupled ^13^C spectra of bilirubin dimethyl ester. The signals due to the endo and exo vinyl groups were separately assigned. This assignment allows a rational interpretation of previously obtained spin‐lattice relaxation times of the vinyl carbon peaks. The two vinyl groups are found to differ considerably in their motional correlation time.

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