OPTICALLY PURE HETEROCYCLIC AMINOACID COMPOUNDS, A PROCESS FOR THEIR PRODUCTION AND THEIR USE FOR THE SYNTHESIS OF MEDICAMENTS

摘要

Abstract of the DisclosureThe invention relates to optically pureheterocyclic amino acid compounds of theFormula I, as described hereinabove as well as aprocess for thei preparation involving subject ?,L-compounds to the action of a proteolytic enzyme.The compounds obtained are useful, inter ????????intermediates for the manufacture of cephalosporinsor penicillins.