C45- and C50-Carotenoids: Synthesis of Optically Active Cyclic C20-Building Blocks and of (2R,2'R)-2,2'-Bis(4-hydroxy-3-methyl-2-butenyl)-β,β-carotene ( =C.p. 450)

Article abstract of DOI:10.1002/hlca.19860690315

The synthesis of the optically active C20-building blocks (R)-26 and (R)-39 and of the optically active cyclic C50-carotenoid C.p. 450 (3) starting from (-)-β-pinene is reported.