Table 2.

The activities of 6a–6r in combination with 2 μg·mL⁻¹ colistin against the growth of BL21(DE3) expressing mcr-1.

Comp.	R1	R2	R3	R4	R5	Conc. (μM)
3		H	H			100
6a		H	H			N.I.A.
6b		H	H			N.I.A.
6c		H				N.I.A.
6d		H	H			N.I.A.
6e		H	H			N.I.A.
6f		H	H			N.I.A.
6g		H	H			50
6h		H	H			50
6i		H	H			50
6j		H	H			N.I.A.
6k		H	H			N.I.A.
6l		H	H			N.I.A.
6m		H	H			N.I.A.
6n		H	H			50
6o		H				100
6p			H			25
6q		H	H			25
6r		H				50

N.I.A. = No Inhibitory activity.