Synthesis Antioxidant and Antimicrobial Activities of N-[(5′-Substituted 2′-phenyl-1H-indol-3′-yl)methylene]-5-(pyridin-4-yl)-1,3,4-oxadiazol-2-amines

Table 1

Antibacterial activity of compounds 3–5.

Comp. number	Conc. (μg/mL) (zone of inhibition in mm)
	E. coli			S. aureus			K. pneumoniae			P. aeruginosa
	1000	750	500	1000	750	500	1000	750	500	1000	750	500
3a	10	10	11	12	12	12	05	05	08	09	09	09
3b	05	05	08	09	09	10	02	02	05	05	05	08
3c	08	08	10	05	05	07	10	10	11	11	11	10
4a	13	13	14	09	09	10	09	10	10	02	02	05
4b	09	09	10	05	05	08	10	05	06	10	10	11
4c	10	10	11	02	02	05	09	09	10	11	11	10
5a	09	11	11	07	07	09	09	09	10	09	10	11
5b	11	03	05	00	00	00	05	05	06	14	13	12
5c	09	09	09	04	04	06	05	09	10	02	02	05
5d	14	14	14	12	12	12	10	10	12	13	13	13
5e	14	14	14	09	09	12	09	10	10	13	13	13
5f	13	13	14	16	14	13	13	13	13	05	06	08
Std.	16	16	15	18	16	15	15	15	14	15	14	14

Std.: Streptomycin (Standard).