Summary
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1.
2-(Polyhydroxyalkyl)thiazolidine-4-carboxylic acids (IIIa-d) decompose in aqueous solutions, their stability decreasing in the sequence Ma ≫ IIId > IIIc > IIIb.
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2.
An equilibrium between the forward and back reactions evidently exists in aqueous solutions, being determined by the concentration of the aldehyde-form of the monose in the solution.
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3.
The stability of thiazolidine-4-carboxylic acids can easily be determined by the polarographic method.
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Belikov, V.M., Sokolov, S.D., Naidenova, N.M. et al. Stability of the products of the condensation of L-cysteine with carbohydrates. Chem Nat Compd 3, 34–36 (1967). https://doi.org/10.1007/BF01171720
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DOI: https://doi.org/10.1007/BF01171720