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. 2011 Dec 15;9(12):2705–2716. doi: 10.3390/md9122705

Table 3.

Cytotoxicity a of 1–4.

Compounds Cell lines ED50 (µg/mL)
A549 HT-29 P-388
1 >50 >50 >50
2 >50 >50 >50
3 >50 >50 >50
4 3.6 10 28
mithramycin b 0.18 0.21 0.15

a For significant activity of pure compounds, an ED50 of ≤4.0 µg/mL is required; b Positive control.