ChemInform Abstract: Synthesis and Spectroscopy of Chemically Modified Spheroidenes
| العنوان: | ChemInform Abstract: Synthesis and Spectroscopy of Chemically Modified Spheroidenes |
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| المؤلفون: | M. V. T. J. Boza, E. van Ouwerkerk, J. Van Dijk, R. Gebhard, Johan Lugtenburg |
| المصدر: | ChemInform. 23 |
| بيانات النشر: | Wiley, 2010. |
| سنة النشر: | 2010 |
| مصطلحات موضوعية: | Photosynthetic reaction centre, chemistry.chemical_classification, biology, Double bond, Chemistry, Nanotechnology, General Medicine, Conjugated system, Chromophore, biology.organism_classification, Polyene, Triple bond, Rhodobacter sphaeroides, chemistry.chemical_compound, Crystallography, Mass spectrum |
| الوصف: | The syntheses and spectroscopic properties of the all-E isomers of 11′,12′-dihydrospheroidene (2), 3,4,11′,12′-tetrahydrospheroidene (3), 3,4-dihydrospheroidene (4), 3,4,5,6-tetrahydrospheroidene (5), 3,4,7,8-tetrahydrospheroidene (6) and 15,15′-didehydrospheroidene (7) are described. Spheroidenes 2-6 have the same overall shape as native spheroidene (1), which is the carotenoid bound in the photosynthetic reaction centre of Rhodobacter sphaeroides 2.4.1, but they have instead polyene chromophores of nine (4), eight (2, 5) or seven (3, 6) conjugated double bonds. In 7, the central double bond is substituted by a triple bond. The observed λmax values of 2-6 are generally in good agreement with those calculated via the Fieser-Kuhn rules. In the mass spectra of 2-6, fragments due to bis-allylic fragmentation occur, whereas 1 and 7 do not show this type of fragmentation. A detailed analysis of the 1H- and 13C-NMR spectra of 1-7 has been achieved by mutual comparison. |
| تدمد: | 0931-7597 |
| DOI: | 10.1002/chin.199214276 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_________::88b1e3cc756dc159ca1825d70c9b7ad2 https://doi.org/10.1002/chin.199214276 |
| Rights: | CLOSED |
| رقم الانضمام: | edsair.doi...........88b1e3cc756dc159ca1825d70c9b7ad2 |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 09317597 |
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| DOI: | 10.1002/chin.199214276 |