SEPARATING METHOD OF A SINGLE ISOMER FROM THE KETOROLAC OF THE RACEMIC BODY

摘要

PURPOSE: A separating method of a single isomer from the ketorolac of the racemic body is provided, thereby separating the high purity of a single isomer form ketorolac. CONSTITUTION: The separating method of a single isomer from the ketorolac of the racemic body comprises the steps of: reaction of the ketorolac of the racemic body represented by formula(1) with alcohol compounds in the presence of Candida antartica lipase B; and separation of (-)-isomer from the reaction mixture by absorption, wherein the alcohol compounds are C3 to C20 alcohols; the amount of the Candida antartica lipase B is 10 to 150 wt.%; and the reaction temperature is 20 to 70 deg. C.