Melville L. Wolfrom (ed.), R. Stuart Tipson (ed.)'s Advances in Carbohydrate Chemistry, Vol. 12 PDF

By Melville L. Wolfrom (ed.), R. Stuart Tipson (ed.)

ISBN-10: 0120072122

ISBN-13: 9780120072125

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Extra resources for Advances in Carbohydrate Chemistry, Vol. 12

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Barker, E. J. Bourne, R . Stephens and D. H. Whiffen, J . Chem. , 4211 (1954). INFRARED SPECTRA OF CARBOHYDRATES 25 explanation would tend to substantiate the assignment of types 1 and 3 vibrations to modes involved with the pyranose ring. This use of infrared spectra of polysaccharides is becoming very helpful in characterizing the types of linkages in an unknown polysaccharide (see Section V of this Chapter for a further discussion of this point). The type f? absorption showed only a very small deviation, regardless of whether a simple hexose or a long-chain polysaccharide was being examined.

B . Structure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . (1) “a”-D-GalactometasaccharinicAcid . . . . . . . . . . . . . . (2) “j3”-s-Galactometasaccharinic Acid . . . . . . . . . . . . . . . c . Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 The D-Glucometasaccharinic Acids . . . . . . . . . . . . . . . . . a . Preparation . .

2. D L - ( ~ ,4-Dihydroxybutyric Acid) . . . . . . . . . . . . . . . . . . . a . Preparation . . . . . . . . . . . . . . . . . . . . . . . . . . . . .............................. 3. ~~-[2,4-Dihydroxy2-(hydroxymethy1)butyric Acid] . . . . . . . . . . .............................. 4 The Five-Carbon Metasaccharinic Acids . . . . . . . . . . . . . . . ....................................................

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Advances in Carbohydrate Chemistry, Vol. 12 by Melville L. Wolfrom (ed.), R. Stuart Tipson (ed.)


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