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 1H and 13CNMR spectroscopy. Fast interconversion of isomers occurs in neutral or alkaline solution. Copyright © 1982 Wiley Heyden Ltd.
Marinello, E., Missale, M., Ponticelli, F. (1982). Cis-trans Isomerisation of 2-(4-Pyridyl)-substituted Thiazolidine-4-carboxilic Acids: pH Dependence by 1H and 13C NMR. ORGANIC MAGNETIC RESONANCE, 20(3), 138-140 [10.1002/mrc.1270200304].
Cis-trans Isomerisation of 2-(4-Pyridyl)-substituted Thiazolidine-4-carboxilic Acids: pH Dependence by 1H and 13C NMR
PONTICELLI, F.
1982-01-01
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 1H and 13CNMR spectroscopy. Fast interconversion of isomers occurs in neutral or alkaline solution. Copyright © 1982 Wiley Heyden Ltd.
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