## Abstract Coherence transfer methods, such as multipleβrelayed COSY and homonuclear HartmanβHahn spectroscopy, were applied to extract subspectra of constituent monosaccharides, which allowed complete assignments of the proton resonances of oligosaccharide chains of glycolipids. The chemical stru
The aggregation behaviour of two structurally isomeric glycolipids
β Scribed by George S. Attard; Wesley P. Blackaby; Andrew R. Leach
- Publisher
- Elsevier Science
- Year
- 1994
- Tongue
- English
- Weight
- 547 KB
- Volume
- 74
- Category
- Article
- ISSN
- 0009-3084
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β¦ Synopsis
The two structurally isomeric glycolipids N-octyl-(l-hexadecylamido)-B-D-glucopyranoside (GIc-N-[8/16]) and Nhexadecyl-(l-oetylamido)-/3-D-glucopyranoside (Glc-N-[16/8]) were synthesized. The lyotropic phase behaviour of these isomers was investigated in order to determine the extent to which the relative disposition of the alkyl chains with respect to the amide unit affects the aggregation properties of the amphiphiles. Both isomers exhibit lamellar and inverse topology cubic mesophases. The extent and polymorphism of the non-lamellar phases appear to be more pronounced in the GIc-N-[8/16] isomer relative to the GIc-N-[16/8] isomer. A molecular mechanics study was undertaken in an attempt to rationalize this behaviour.
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