| abstract |
PROBLEM TO BE SOLVED: To provide a novel method for producing 9-hydroxyellipticine, which is useful as an intermediate for the synthesis of pharmaceuticals. SOLUTION: Chemical formula [I] (Wherein, R 1 represents an alkyl group or an aryl group, R 2 represents a lower alkyl group or an aryl group, R 3 and R 4 represent a lower alkyl group, etc.) or an aldehyde conversion product thereof is treated with an acid. A method for producing 9-hydroxy ellipticine by the above method. |