Table 2. In Vitro Antimalarial Activities of Selected Quinolones versus W2 and TM90C2B and PfNDH2 Enzyme Inhibition Dataa.
compound | IC50 W2 (nM) | IC50 TM90C2B (nM) | IC50PfNDH2 (nM) |
---|---|---|---|
chloroquine | 12.3 | 14.5 | NDb |
atovaquone | 0.3 | 9908 | 10,000 |
1 | 26 | 122 | 20 |
4e | 33 | ND | 837 |
5a | 14 | ND | ND |
5b | 11 | 110 | ND |
11c | 15 | 500 | 1,000 |
11i | 49 | 300 | 68 |
50% inhibitory concentration in vitro against P. falciparum chloroquine-resistant W2 strain (Indochina), Atovaquone resistant TM90C2B strain, and PfNDH2 enzyme inhibition data.24
ND, not determined.