C45 und C50-Carotinoide. Synthese eines optisch aktiven cyclischen C20-Bausteins und von Decaprenoxanthin ( = (2R,6R,2'R,6'R)-2,2'-Bis(4-hydroxy-3-methylbut-2-enyl)-ε,ε-carotin)

Article abstract of DOI:10.1002/hlca.19890720120

The synthesis of the optically active cyclic C20-building block (R,R)-15 and of the optically active C50-carotenoid (2R,6R,2'R,6'R)-decaprenoxanthin (1) starting from (-)-β-pinene ((S)-2) is reported.