Synthesis of glyfoline, a constituent of glycosmis citrifolia (Willd.) lindl. and a potential anticancer agent

Abstract Condensation of 4-benzyloxy-3-methoxyanthranilic acid ( 3 ) with 5-iodo-1,2,3,4-tetramethoxybenzene ( 4 ) gave 6-benzyloxy-1,2,3,4,5-pentamethoxy-9-acridone ( 5 ), which was then converted into glyfoline ( 1 ) via N-methylation, selective de-O-methylation, and debenzylation. The synthetic glyfoline ( 1 ) is identical with an authentic sample isolated from plant.