Figure 4.

Antibacterial activities of the 4(3H)-quinazolinones derivatives at ring 3. As in Figure 2, the MICs (μg/mL) were determined for S. aureus ATCC 29213. Red text is for inactive compounds (MIC ≥ 16 μg/mL) and blue for active compounds (MIC ≤ 8 μg/mL).