Table 4.
Compound | Concentration (μM) | Inhibition on growth medium (%) | Topo I dependent cytotoxicity (IC50, μM)b) | |
---|---|---|---|---|
Raffinose | Galactose | |||
CPT | 1.0 | 0 | 74 | 0.15 |
Luotonin A (1aa) | 1.0 | 0 | 36 | |
0.5 | 0 | 23 | ||
14-aza-CPT (53a) | 2.0 | 0 | 46 | >10 |
53b | 1.28 |
a) Inhibition of RS321Nph-Topo I grown in minimal medium containing 3% raffinose or galactose for 2 days at 30 °C. b) Values were obtained against A549 cells using an MTT assay.