Sugar migration

The sugars migrate rapidly in solvent II and a good resolution is obtained in one development [5] (see Table 198). The phosphate buffer in the solvent may be replaced by water with little effect on the hi /-values [5, 22]. 

Treatment of elloramycin A (10) with anhydrous TFA led to a novel trans-glycosylation rearrangement in which the sugar migrates from... 

Attempts to separate the isomeric deoxy ribose phosphates by ion exchange techniques met with no success this may be because of the fact that eluents having a pH lower than 5 were not used, as migration of phosphomonoesters is known to be acid catalysed, and, because of the free sugar involved, alkaline eluents could not be considered. 

The taste of various amino acids, sugars, and aliphatic nitro compounds was studied, and it was concluded that the distance over which this hydrogen atom migrates, to give a second tautomeric form, determines the sweetness. In the case of saccharin, the sweetness was explained as due to two tautomeric forms. 

In bleeding, unfrozen sirup migrates through the cellular structure of the ice to the bottom of the container. This occurs even at low temperatures, because high sugar solids prevent total freezing of the sirup. The proper use... 

The stabilization of the radical cation by forming a polaron is a trade-off between its delocalization and the energy required to distort the DNA structure. The former lowers the kinetic energy of the intrinsically quantum mechanical migrating radical cation, and the latter will be determined by factors that are independent of specific base sequence, such as the force constants of bonds in the sugar diphosphate backbone. 

White, Th. Studies in the Amino-Sugars. Parti. A Case of Acyl-Migration. 

Zhang, Z. Y. Wong, C. H., Regioselective benzoylation of sugars mediated by excessive Bu2SnO observation of temperature promoted migration. Tetrahedron 2002,58, 6513-6519. 

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