Acid derivative immobilized cephalosporin carboxylic carrying polymer
AssigneeGlaxo Laboratories Limited
InventorsDerek Walker, Philip Howard Chapman
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Abstract
There are provided cephalosporin and penicillin carboxylic acid derivatives which comprise polymers carrying a plurality of molecules of said acid, the carboxyl groups of which are blocked by attachment to the polymer, principally by forming ester linkages to aliphatic carbon atoms in the polymer. There are also provided methods of immobilizing cephalosporin and penicillin acids on polymers and of carrying out chemical reactions to modify said acids.
Claims12
An immobilised cephalosporin carboxylic acid derivative consisting essentially of a polymer containing recurring aromatic units having aliphatic carbon atoms attached to said recurring aromatic units and to a second aryl group, the said polymer carrying a plurality of molecules of a cephalosporin carboxylic acid, the carboxyl groups of which are directly bonded to said aliphatic carbon atoms by the formation of carboxylic acid ester linkages.
Dependencies are inferred from the claim text.