Figure 4.
(A) Structures of carotenoids: (1) α-carotene; (2) β-carotene; (3) β-cryptoxanthin; (4) lutein; (5) lycopene; (6) zeaxanthin; (B) Structures of the polyacetylenes: (1) falcarinol; (2) falcarindiol; (3) falcarindiol-3-acetate.
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