Table 1.

Chemical Structures of Natural and Semisynthetic C-Glycosylflavones

cmpd no.	Functional group				cmpd no.	Functional group
	R1	X1	X2	R2		R1	X1	X2	R2
1	H	H2	O	H	19	CH3	O	NH
5	CH3	H2	O	H
6	CH3	O	O	H	20	CH3	O	NH
7	CH3	O	O	CH3
8	CH3	O	NH		21	CH3	O	NH
9	CH3	O	NH		22	CH3	O	NH
10	CH3	O	NH		23	CH3	O	NH
11	CH3	O	NH
12	CH3	O	NH		24	CH3	O	NH
13	CH3	O	NH
14	CH3	O	NH		25	CH3	O	NH
15	CH3	O	NH		26	CH3	O	NH
					27	CH3	O	NH
16	CH3	O	NH		28	CH3	O	NH
17	CH3	O	NH		29	CH3	O	NH
					30	CH3	O	NH
18	CH3	O	NH		31	CH3	O	NH