Clathration-Induced Asymmetric Transformation of Cefadroxil

Autor: Kemperman, G. J., Zhu, J., Klunder, A. J. H., Zwanenburg, B.
Zdroj: Organic Letters; September 2000, Vol. 2 Issue: 18 p2829-2831, 3p
Abstrakt: The cephalosporin antibiotic Cefadroxil can be epimerized at the α-carbon of its amino acid side chain using pyridoxal as the mediator. By clathration with 2,7-dihydroxynaphthalene, the desired diastereomer can be selectively withdrawn from the equilibrating mixture of epimers. In this way, an asymmetric transformation of Cefadroxil can be accomplished. This opens the possibility of the production of Cefadroxil starting from racemic p-hydroxyphenylglycine, in contrast to the current industrial synthesis that employs the d-amino acid in enantiopure form.
Databáze: Supplemental Index