Table 3.

Polymethoxyflavones.

	Compound name	R1	R2	R3
14	Quercetogetin	OMe	H	OMe
15	3,3’,4’,5,6,7,8-Heptamethoxyflavone	OMe	OMe	OMe
16	Natsudaidain	OH	OMe	OMe
17	Nobiletin	H	OMe	OMe
18	Sinensetin	H	H	OMe
19	Tangeretin	H	OMe	H
20	Tetramethylscutellarein	H	H	H