Determination of the geometrical configuration of the polyen chain of monocis C40-carotenoids—I: A 13C NMR study of monocis zeaxanthins and monocis capsorubins |
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| Authors: | M Baranyai J Szabolcs G Tóth L Radics |
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| Institution: | University Medical School, H-7643 Pécs, Hungary;NMR Laboratory, Central Research Institute for Chemistry, H-1525 Budapest, Hungary |
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| Abstract: | 13C NMR studies reveal that the polyen chain of neo-zeaxanthin A (2) and that of neo-capsorubin A (5) have 13-cis configuration, while those of neo-zeaxanthin B (3) and neo-capsorubin B (6) have 9-cis geometrical configuration. 13C NMR data on the corresponding all-trans carotenoids (1 and 4) are also reported. |
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