Figure 4.
Checkerboard assays: A) CPX MIC reduction against SA‐1199B in the presence of increasing (from 0.19 to 6.25 μg/mL) concentrations of derivatives 8 a–c, 10 a, 12 b, 12 c, 13 a and 13 b and reference compound 1. B) CPX MIC reduction against SA‐K2378 in the presence of increasing (from 0.19 to 12.5 μg/mL) concentrations of derivatives 8 b, 8 c, 12 c and 13 a. Assays performed in duplicate.