Table 1: Minimum inhibitory concentrations (MICs) in (µg/mL) of the most active compounds.

Entry	MIC (µg/mL)
	Staphylococcus aureus	Bacillus. subtilis
Ampicillin	62.5	62.5
4a	>1000	250
7a	1000	62.5
7d	500	250