| ~1H-NMR studies on cis-trans isomers of spheroidenes |
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| 引用本文： | 姜月顺,小山泰. ~1H-NMR studies on cis-trans isomers of spheroidenes[J]. 中国科学B辑(英文版), 1996, 0(1) |
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| 作者姓名： | 姜月顺 小山泰 |
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| 作者单位： | Department of Chemistry，Jilin University，Changchun 130023，China，Faculty of Science，Kwansei Gakuin University，Nishinomiya 662，Japan |
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| 摘 要： | All-trans spheroidene was extracted from the cells of Rhodobacer sphaeroides 2.4.1 and a set of cis-trans isomers were isolated from an isomeric mixture obtained by iodine-sensitized photo-isomerization of the all-trans isomer by high-pressure liquid chromatography (HPLC). On the basis of assignment of the 1H-NMR spectra (COSY, long-range COSY, rekyed COSY, ROESY and NOESY) of the all-trans isomer, the configurations of cis isomers were determined by the isomerization shifts of the olefinic 1H signals. The peaks of HPLC could be assigned as follows: A: 9,13'-cis, B1: 5,13-cis, B2: 13,9'-cis, C: 13-cis, E: 9-cis, F: 13'-cis, G: 5,9'-cis, H: 9'-cis, I: all-trans.
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~1H-NMR studies on cis-trans isomers of spheroidenes |
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| JIANG Yueshun. ~1H-NMR studies on cis-trans isomers of spheroidenes[J]. Science in China(Chemistry), 1996, 0(1) |
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| Authors: | JIANG Yueshun |
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| Abstract: | All-trans spheroidene was extracted from the cells of Rhodobacer sphaeroides 2.4.1 and a set of cis-trans isomers were isolated from an isomeric mixture obtained by iodine-sensitized photo-isomerization of the all-trans isomer by high-pressure liquid chromatography (HPLC). On the basis of assignment of the 1H-NMR spectra (COSY, long-range COSY, rekyed COSY, ROESY and NOESY) of the all-trans isomer, the configurations of cis isomers were determined by the isomerization shifts of the olefinic 1H signals. The peaks of HPLC could be assigned as follows: A: 9,13'-cis, B1: 5,13-cis, B2: 13,9'-cis, C: 13-cis, E: 9-cis, F: 13'-cis, G: 5,9'-cis, H: 9'-cis, I: all-trans. |
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| Keywords: | spheroidene cis-trans isomers 2D 1H-NMR high-pressure liquid chromatography. |
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