abstract |
PROBLEM TO BE SOLVED: To provide a UCN- having an antitumor action and an antibacterial action. 01 is provided in a simple and efficient manner. According to the present invention, UCN-02 isomerized to UCN-01 by acidifying a solution containing UCN-01 and its stereoisomer UCN-02, A method for producing UCN-01, which comprises recovering UCN-01 in the acidic aqueous solution, can be provided. |