Table 4.

Cell growth inhibition in the presence of compounds 1–5 and camptothecin taken as reference.

Compound	Cell Lines GI50 a (nM)
	MSTO-211H	HeLa	HepG2
1	25.9 ± 4.5	0.06 ± 0.01	0.45 ± 0.16
2	6.9 ± 1.9	0.09 ± 0.02	0.66 ± 0.09
3	7.2 ± 1.6	0.41 ± 0.16	3.0 ± 1.3
4	7.3 ± 2.1	0.35 ± 0.06	2.5 ± 0.2
5	>50	>50	>50
Camptothecin	2.1 ± 0.1 *	5.4 ± 0.2 *	3.00 ± 0.20

* From ref. [40] ^a Means values ± of at least three independent experiments.