Table 2.

Inhibitory effects of compounds 4a, 4e, and 8a against VEGFR-2.

Comp.	% Inhibition				IC50 (nM)
	10 nm	100 nm	1 μM	10 μM
4a	31.27	45.14	77.94	91.96	91
4e	24.09	42.84	70.45	88.69	161
8a	16.31	37.14	70.11	83.47	266
SOR	32.47	57.22	81.01	92.17	53