Naturally occurring stereoisomers of fucoxanthin
1992
Haugan, J.A. | Liaaen-Jensen, S.
Fast and gentle isolation of crude carotenoids from Fucus serratus, Fucus vesiculosus, Ascophylium nodosum, Pelvetia canaliculata, Laminaria digitata and Laminaria saccharina followed by HPLC examination suggested that all-E(3S,5R,6S,3'S,5'R,6'R)-fucoxanthin is the only naturally occurring stereoisomer in brown algae. Mono-Z isomers (13-Z, 9'-Z and 13'-Z) appeared to be isolation artifacts formed in solution. The 9'Z-6'R isomer, formed during workup procedures, was previously mistaken as the allenic all-E-6'S isomer. The so-called neo B isomer was reisolated and shown to have 13'-Z configuration. It was inferred that neo A represented a mixture of the 13-Z and 9'-Z isomers.
Show more [+] Less [-]AGROVOC Keywords
Bibliographic information
This bibliographic record has been provided by National Agricultural Library