PREPARATION OF CLAVULANIC ACID FROM CLAVULANIC ACID SALT AND AMINE, CLAVULANIC ACID AND AMINE SALTS

摘要

FIELD: pharmaceutical industry. SUBSTANCE: process for preparing clavulanic acid or pharmaceutically acceptable salts and esters thereof in which amine of formula (II) is used as intermediate compound for preparation of clavulanic acid salt wherein R¹, R² and R³ are selected from different substituent atoms and groups. EFFECT: more efficient preparation process.