Optically Active Oligomer Units in Aggregates of a Highly Unsaturated, Optically Inactive Carotenoid Phospholipid
| Autor: | Hans Dieter Martin, Miklós Simonyi, Bente Jeanette Foss, Zsolt Bikádi, Ferenc Zsila, Vassilia Partali, Bernhard Mayer, Hans-Richard Sliwka, Christian Köpsel |
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| Rok vydání: | 2005 |
| Předmět: |
Models
Molecular Molecular Structure genetic structures Molecular model Stereochemistry Chemistry Organic Chemistry Supramolecular chemistry General Chemistry Glycerophospholipids Oligomer eye diseases Catalysis Choline chemistry.chemical_compound Monomer Amphiphile sense organs Histone octamer Lysophospholipids Enantiomer |
| Zdroj: | Chemistry - A European Journal. 11:4103-4108 |
| ISSN: | 1521-3765 0947-6539 |
| DOI: | 10.1002/chem.200401191 |
| Popis: | Enantiomers of glycerophospholipids show low or no optical activity. Accordingly, optical activity was not observed with the R enantiomer of a highly unsaturated carotenoyl lysophospholipid in solution. In spite of this, strong Cotton effects are detected in water. The amphiphilic carotenoid-phospholipid monomers associate to form aggregates, whose optical activity is attributed to oligomeric entities. These small helical assemblies cannot exist independently. Yet, the calculated octamer represents the simplest repeating primary unit that sufficiently expresses the absorption properties and supramolecular optical activity. |
| Databáze: | OpenAIRE |
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