Carotenoids with 7-Oxabicycloheptyl End Groups. Synthesis of (2S,5R,6S,2'S,5'R,6'S)-2,5:2',5'-Diepoxy-5,6,5',6'-tetrahydro-β,β-carotene

Article abstract of DOI:10.1002/hlca.19900730816

Mukayama's ester 6 (methyl (1S,2R,5S)-2,5-epoxy-2,6,6-trimethylcyclohexane-1-carboxylate) was transformed in a few conventional steps into the title compound 14.Its CD curve was found to be significantly different from that of the analogous 3,6-epoxide, a