MIC values of compounds 2–8.

MICa (mg mL−1)
Compounds (2.0 mg per disc)	Gram (−ve) bacteria	Gram (+ve) bacteria
	E. coli	S. haemolyticus	K. kristinae	E. casseliflavus	B. cereus
2a	−ve	−ve	−ve	−ve	−ve
2b	−ve	−ve	−ve	ND	1 ± 0.3
3	ND	−ve	−ve	−ve	ND
4	1.6 ± 0.2	1.4 ± 0.3	1.5 ± 0.3	1.5 ± 0.1	1.6 ± 0.2
5	2.0 ± 0.0	ND	−ve	ND	2.0 ± 0.0
6a	0.9 ± 0.2	0.6 ± 0.3	0.6 ± 0.2	0.7 ± 0.2	0.5 ± 0.1
6b	0.5 ± 0.05	0.3 ± 0.1	0.5 ± 0.1	0.4 ± 0.1	0.4 ± 0.05
7	0.9 ± 0.1	1.2 ± 0.2	1.1 ± 0.3	1.8 ± 0.1	1.5 ± 0.1
8	−ve	2.0 ± 0.3	ND	1.0 ± 0.0	−ve
Standard	Levofloxacin (20 mg per disc)
St. result	1.6 ± 0.4	2.0 ± 0.2	2.0 ± 0.3	2.5 ± 0.2	2.2 ± 0.3

^aMIC: minimum inhibitory concentration (mg mL⁻¹).