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cis–trans isomerization of 2-(4-pyridyl)-substituted thiazolidine-4-carboxylic acids: pH dependence by 1H and 13C NMR

✍ Scribed by Fabio Ponticelli; Enrico Marinello; Maria Cristina Missale

Publisher
John Wiley and Sons
Year
1982
Tongue
English
Weight
200 KB
Volume
20
Category
Article
ISSN
0749-1581

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✦ Synopsis

Abstract

The presence of two diastereoisomeric thiazolidines obtained by the reaction of L‐cysteine or L‐cysteine ethyl ester and pyridoxal or pyridoxal‐5‐phosphate is demonstrated by ^1^H and ^13^CNMR spectroscopy. Fast interconversion of isomers occurs in neutral or alkaline solution.

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