Acridone alkaloids are mostly found mainly in Rutaceae and to lesser extent in Piperaceae and Simarubaceae. Acridone alkaloid, 1,3,5-trihydroxy-2,8-bis(3-methylbut-2-enyl)-10-methyl-9-acridone (1), was isolated from the stembark of Swinglea glutinosa. Fagara zanthoxyloides alkaloids are isolated from genus Fagara. Fagara tessmannii Engl. Zanthoxylum macrophyllum Oliv.