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- Title
Neoflor und 6-Epineoflor aus Blüten von Trollius europaeus; Hochfeld-<sup>1</sup>H-NMR-Spektren von Neoxanthin und (9′ Z)-Neoxanthin.
- Authors
Märki-Fischer, Edith; Eugster, Conrad Hans
- Abstract
Neoflor and 6-Epineoflor from Flowers of Trollius europaeus; Highfield 1H-NMR Spectra of (all-E)-Neoxanthin and (9′Z)-Neoxanthin Re-isolation of the very polar carotenoids from flowers of the title plant furnished two epimeric pentahydroxy compounds. Based on spectroscopical and chiroptical arguments and by chemical correlation with neoxanthin, their structures were established as 11 (proposed name neoflor) and 12 ( 6- epineoflor), Decoupling experiments and COSY-2D-1H-NMR spectra allowed a complete assignement of the vinyl protons of the two isomers, and furthermore, for the first time, also of those of (all- E)-neoxanthin and (9′Z)-neoxanthin.
- Publication
Helvetica Chimica Acta, 1990, Vol 73, Issue 6, p1637
- ISSN
0018-019X
- Publication type
Article
- DOI
10.1002/hlca.19900730608