In vitro enzyme inhibition of compounds and antioxidant activity of compounds (1–15).

Compound	Urease inhibition IC50 ± SDa	Antioxidant activity
		% Inhibition ± SDa	EC50 (μg ml−1)
1	92.3 ± 0.20	71.1 ± 0.01	37.5
2	73.5 ± 0.65	43 ± 0.01	—
3	56.3 ± 0.78	67.4 ± 0.01	75
4	34.2 ± 0.72	29 ± 0.01	—
5	NA	12 ± 0.01	—
6	NA	71 ± 0.01	37.5
7	NA	57.8 ± 0.01	100
8	86.4 ± 0.78	32 ± 0.01	—
9	67.14 ± 0.67	57.8 ± 0.02	100
10	NA	57.9 ± 0.02	100
11	42.43 ± 0.65	71.1 ± 0.01	37.5
12	NA	43 ± 0.01	—
13	NA	57.7 ± 0.01	100
14	NA	23 ± 0.01	—
15	NA	69.3 ± 0.01	75
Thiourea	21.7 ± 0.12	—	—
Acetohydroxamic acid	37.0
Ascorbic acid	—	80	8.3

^aSD = standard deviation; NA = not applicable.