Back to results
US 4,290,949 AGranted
Esters of 2-vinylclav-2-em-3-carboxylic acid and process for preparing same
AssigneeGlaxo Operations UK Limited
InventorsPeter C. Cherry, Christopher E. Newall, Nigel S. Watson, Gordon I. Gregory, Peter Ward
Life of this patent
Estimating the term…
Abstract
2-Vinylclavem compounds are disclosed which have been found of value in the synthesis of thio-derivatives of clavulanic acid which possess antibiotic and .beta.-lactamase inhibitory activity. Methods for preparing the vinylclavem compounds are disclosed and processes for preparing the thio-derivatives are given.
Claims1
Crystalline 4-nitrobenzyl (5R)-2-vinylclav-2-em-3-carboxylate.
Dependencies are inferred from the claim text.