Table 1.

Structural variation in flavone C-glycosides isolated from L. siceraria

Compound	R1	R2	R3	R4	R5
Vitexin	H	Glucose	H	H	H
Isovitexin	Glucose	H	H	H	H
Saponarin	Glucose	H	Glucose	H	H
Saponarin C- O- glucoside	Glucose	H	Glucose	H	Glucose
Saponarin Caffiec ester	Glucose	H	Caffioyl glucose	H	H
Isoorientin	Glucose	H	H	OH	H
Lutonarin	Glucose	H	Glucose	OH	H