. 2009 Aug 11;2(2):33–43. doi: 10.3390/ph2020033

Table 1.

Effect of xanthone derivatives 1-11 on the growth of human tumor cell lines.

Compound	GI₅₀ (µM)
Compound	MCF-7	NCI-H460	SF-268
Results are given in concentrations that were able to cause 50% of cell growth inhibition (GI₅₀) after a continuous exposure of 48h and represent means of ±SEM of 3 independent experiments performed in duplicate and carry out independently. ^aResults published elsewhere [3,4]. ^bResults of one or two experiments performed in duplicate. Doxorubicin was used as positive control, GI₅₀: MCF-7 = 42.8±8.2 nM; NCI-H460 = 94.0±8.7 nM; SF-268 = 93.0±7.0 nM. ND = not determined.
1^a	21.9 ± 0.4	20.6 ± 0.9	33.4 ± 0.2
2^a	50.8 ± 2.2	37.9 ± 2.9	61.4 ± 5.2
3^a	18.4 ± 1.9	>160	>160
4^a	>160	>160	>160
5^a	88.6 ± 12.9	>160	>160
6	>150^b	>150^b	ND
7	>150	>150^b	ND
8	>150^b	>150^b	ND
9^a	>200	ND	ND
10	55^b	>150^b	ND
11	88^b	ND	ND