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

Doron Kaplan, Gil Navon*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

An individual assignment of certain peaks in the proton and 13C 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 13C 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.

Original languageEnglish
Pages (from-to)59-62
Number of pages4
JournalOrganic Magnetic Resonance
Volume13
Issue number1
DOIs
StatePublished - Jan 1980

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