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Das Komplexbildungsvermögen von acylierten Aminosäuren

✍ Scribed by A. Weiss; S. Fallab

Publisher
John Wiley and Sons
Year
1957
Tongue
German
Weight
257 KB
Volume
40
Category
Article
ISSN
0018-019X

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✦ Synopsis

Abstract

Complex formation of substituted amino acids with Cu^2+^ has been studied by use of ion exchangers. Acylation of the amino group results in a heavy decrease of coordination tendency.

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## Abstract The tendency of several N‐heterocyclic carbonic acids towards complex formation with Cu^2+^ has been estimated. The aromatic character of the heterocyclic ring system rather than the basicity of the donor group seems to have the strongest influence on chelate stability.

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## Abstract Penicillin has been found to chelate Cu^2+^ although the chelating power of corresponding acylated aminoacids is very small. For comparison, the capacity of binding Cu^2+^ of a few structural analogues of penicillin has been determined by an ion exchange method described in a previous p

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## Abstract The capacity of several hydroxyacids, ketoacids and hydroxyketones for binding Fe^3+^ has been compared by an indirect colorimetric method. There is evidence that chelate formation occurs with 1,3‐dihydroxyacetone, lactic acid and pyruvic acid.