Abstract
SINCE Steward and Thompson first proposed their new cyclic structure for asparagine indicated in the formulæ1, there have been a number of communications which have questioned this point of view2. In commenting on these communications, Steward and Thompson emphasized the importance of collecting evidence on solutions of free asparagine, since it is possible that crystalline asparagine and derivatives of asparagine may not conform to the cyclic structure3.
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References
Steward, F. C., Thompson, J. F., Nature, 169, 739 (1952).
Leach, S. J., and Lindley, H., Nature, 171, 1062 (1953).
Steward, F. C., and Thompson, J. F., Nature, 171, 1063 (1953).
Saidel, L. J., Goldfarb, A. R., and Waldman, S., J. Biol. Chem., 197, 285 (1952).
Polya, J. B., and Spotswood, T. M., Rec. trav. chim. Pays-Bas, 68, 576 (1949).
Ley, H., and Arends, B., Z. phys. Chem., B, 17, 177 (1932).
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SAIDEL, L. Contribution of the Ultra-Violet Absorption Spectrum of Asparagine to the Problem of its Structure. Nature 172, 955–956 (1953). https://doi.org/10.1038/172955b0
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DOI: https://doi.org/10.1038/172955b0
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