Patent ID: 11970504
Assignee: KING FAISAL UNIVERSITY
Field: Pharmaceuticals (Chemistry)
Classification: CPC C  A  Y | IPC A  C

Claim 8:
9. A method of making the 2-benzo-[3,4-b]quinolino-[b,g]indeno[1′,2′:3,4]fluoreno-[1,2-d]oxonine-5,11,16,21-tetraone compound of claim 1, the method comprising:
mixing indandione, 2-hydroxyquinoline-3-carbaldehyde, and a Lewis Base in ethanol to obtain a reaction mixture;
refluxing the reaction mixture;
evaporating excess solvent under a vacuum to obtain a solid;
recrystallizing the solid from acetic acid; and
obtaining the 2-benzo-[3,4-b]quinolino-[b,g]indeno[1′,2′:3,4]fluoreno-[1,2-d]oxonine-5,11,16,21-tetraone compound.