Cell Line 1 2 A549 5 ± 0.42  μg / mL 2.1 ± 0.18 μg / mL NCI-H460 4.6 ± 0.34 μg / mL 1.6 ± 0.09 μg / mL MCF-7 7.2 ± 0.63 μg / mL 3.9 ± 0.31 μg / mL MDA-MB-231 8.4 ± 0.82 μg / mL 4.6 ± 0.33 μg / mL Data were expressed as a mean value of at least three independent experiments.

Table 1: The IC50 of kaempferol-3-O-(2",4"-di-E-p-coumaroyl)-α-L-rhamnopyranosid (1) and kaempferol-3-O-(3",4"-di-E-p-coumaroyl)-α-L-rhamnopyranoside (2) in different cancer cell line.