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NMR, MS and X-ray crystal structure determination of the bixin family of apocarotenoids

TitleNMR, MS and X-ray crystal structure determination of the bixin family of apocarotenoids
Publication TypeJournal Article
Year of Publication1996
AuthorsKelly, DR, Edwards, AA, Parkinson, JA, Olovsson, G, Trotter, J, Jones, S, Malik, KMA, Hursthouse, MB, Hibbs, DE
JournalJournal of Chemical Research-S
Pagination446-&
Date PublishedOct
Type of ArticleArticle
ISBN Number0308-2342
KeywordsALL-TRANS, ANNATTO, ASSIGNMENTS, BETA-CAROTENE, COMPLETE H-1, FAST-ATOM-BOMBARDMENT, ORELLANA, SPECTRA, TANDEM MASS-SPECTROMETRY, THERMAL-DEGRADATION
Abstract

The assignment of the H-1 and C-13 NMR spectra of alpha-bixin, methyl alpha-bixin, beta-bixin and methyl beta-bixin have been carried out using a combination of one- and two-dimensional techniques; the FAB(+) mass spectra of all these bixins had the molecular ion and methyl tropylium as high abundance peaks; also, the structures of alpha-bixin and methyl alpha-bixin have been confirmed by X-ray crystal structure determinations.
URL<Go to ISI>://A1996VT90300006