Alditols occurrence

A plausible explanation for the occurrence of acetal migration with the alditol but not with the sugar moiety of the degradation product is that the primary reaction of the acetal (for example, 39) is the fis-... 

Satisfactory separations of alditol acetates have been obtained for O-methyl-O-propylglucitols, where propylation was used because of the natural occurrence of an 0-methylglucose, and for O-ethyl-0-methylglucitols prepared during an investigation into the lengths of the side chains in dextrans. ... 

Elimination of multiple peaks may also be achieved by conversion of a sugar into the dithioacetal or the nitrile. The suitability of the former type of derivative for g.l.c. appears to have been explored only in a model study on xylose methyl ethers. Lance and J. K. N. Jones also demonstrated that the acetylated nitriles derived from diese ethers give sharp, single peaks, and permit 2- and 3-0-methyl-i>-xylose to be distinguished from each other, a resolution not achieved by using alditol acetates. Nitriles have been used by Bouhours and Cheshire to demonstrate the occurrence of the same two xylose ethers in peat, and by Bacon and Cheshire to prove the natural existence of 3-O-methyl-D-galactose in leaves. 

Deoxy-altritol has been shown to be present in the cell wall polysaccharide of t ocardia asteroides, along with arabinose, galactose, and glucose, the first reported occurrence of this alditol in... 

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