Journal of Pharmaceutical Sciences p. 125 - 128 (1984)
Update date:2022-08-16
Topics:
Ghebre Sellassie
Hem
Knevel
5R,6R-Benzylpenicilloic acid was found to epimerize slowly in alkaline media to 5S,6R-benzylpenicilloic acid until equilibrium was established. Epimerization proceeded via the imine tautomer of penamaldic acid rather than the enamine form and was found to favor the 5S,6R-epimer at equilibrium. The conversion process was monitored using both reverse-phase high-performance liquid chromatography and NMR spectroscopy.
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