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1H and 13C NMR spectra of 1-palmitoyl-2-oleyl-sn-glycero-3-phosphorylcholine in CDCl3 solution and in sonicated dispersions in 2H2O

✍ Scribed by Juan F. Santaren; M. Rico; A. Ribera

Publisher
John Wiley and Sons
Year
1983
Tongue
English
Weight
447 KB
Volume
21
Category
Article
ISSN
0749-1581

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✦ Synopsis

Abstract

A mixed‐acid monounsaturated lecithin, 1‐palmitoyl‐2‐oleyl‐sn‐glycero‐3‐phosphorylcholine (POL), has been synthesized by phospholipase A~2~ digestion of 1,2 dipalmitoyl‐sn‐glycero‐3‐phosphorylcholine followed by reacylation of the lysolecithin with oleic anhydride.

^1^H (90 MHz) and ^13^C (25.2 MHz) NMR spectra of POL in CDCl~3~ solution and in sonicated dispersions in ^2^H~2~O have been obtained, and spin‐lattice relaxation times measured. The relaxation times were characteristic of the type of structure formed and reflect molecular motion within the lecithin molecule in each structure. In both systems the spin‐lattice relaxation times increase along the alkyl chains towards the terminal methyl group, showing a corresponding increase in the chain molecular motion, although there are significant differences in the gradation of the changes.

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