Table 3.
Compound | X | Y | Staphylococcus aureus | Escherichia coli |
---|---|---|---|---|
3a | NO2 | Me | + + + | + + + |
3b | NO2 | NO2 | + + + | + + + |
4a | NO2 | Me | + + + | + + + |
4b | NO2 | NO2 | + + + | + + + |
5a | NO2 | ― | + + + | + + + |
3e | OMe | Me | + + | + |
4c | H | H | + + | + |
4e | OMe | Me | + + | + |
4f 3c 3d 3f 4d 5b 5c |
OMe H H OMe H H OMe |
H H Me H Me ― ― |
+ + ― ― ― ― ― ― |
+ ― ― ― ― ― ― |
+ + + for maximum activity, MIC = 25 μg/mL; + + for moderate activity, MIC = 50 μg/mL; +for slight activity, MIC = 75 μg/mL and – for inactive.