6-Epikarpoxanthin ((all-E,3S,5R,6S,3′R)-5,6-dihydro-β,β-carotene-3,5,6,3′- tetrol, 5), 5,6-diepikarpoxanthin ((all-E,3S,5S,6S,3′A)-5,6-dihydro-β,β-carotene-3,5,6,3′- tetrol, 13), 5,6-diepilatoxanthin ((all-E,3S,5S,6S,3′S,5′R, 6′S)-5′,6′-epoxy-5,6,5′,6′-tetrahydro-β, β-carotene-3,5,6,3′-tetrol, 14), and 5,6-diepicapsokarpoxanthin ((all-E,3S,5S,6S,3′S,5′R)-5,6-dihydro-3,5,6,3′-tetrahydroxy- β,κ-caroten-6′-one, 15) were isolated from red spice paprika (Capsicum annuum var. longum) and characterized by their UV/VIS, CD, 1H- and 13C-NMR, and mass spectra. Our investigations demonstrate that the configuration of the 3,5,6-trihydroxy-5,6-dihydro-β-end group may differ depending on the biological source.
ASJC Scopus subject areas
- Drug Discovery
- Physical and Theoretical Chemistry
- Organic Chemistry
- Inorganic Chemistry