Abstract
ALTHOUGH investigations of sugars played a key part in the development of concepts of optical activity as related to molecular structure, the optical rotatory dispersion behaviour of carbohydrates has proved relatively uninteresting. Frequently plain dispersion curves have been obtained1, that is, curves which can be fitted over the accessible wave-length range by a single term Drude expression with a very low λc of the order of 150 mµ. Moderate deviations from simple dispersion were observed for a number of methyl-glycosides and acetylated methyl -glycosides by Harris, Hirst and Wood2, who concluded that complex dispersion is more usual than simple dispersion in such compounds.
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References
Djerassi, C., Optical Rotatory Dispersion, 143, 231 (McGraw-Hill Book Co., New York, 1960).
Harris, T. H., Hirst, E. L., and Wood, C. E., J. Chem. Soc., 2108 (1932).
Whistler, R. L., Feather, M. S., and Ingles, D. L., J. Amer. Chem. Soc., 84, 122 (1962).
Rao, V. S. R., Foster, J. F., and Whistler, R. L., J. Org. Chem. (in the press).
Rao, C. N. R., Ultraviolet and Visible Spectroscopy, Chap. 6 (Butterworths Pub., London, 1961).
Rao, C. N. R., Ultraviolet and Visible Spectroscopy, Chap. 3 (Butterworths Pub., London, 1961).
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RAO, V., FOSTER, J. Rotatory Dispersion Behaviour of Carbohydrates: a Cotton Effect in D-Glucose, D-Xylose and Various Related Saccharides. Nature 200, 570–571 (1963). https://doi.org/10.1038/200570a0
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DOI: https://doi.org/10.1038/200570a0
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