Synthesis and Biological Evaluation of Novel 5,7-Dichloro-1,3-benzoxazole Derivatives

Table 5

Ferric reducing activity of compounds 4–11.

Compounds	Ferric reducing activity of different
	concentrations (μg/mL) of compounds 4–11 (%)
	25	50	100	200	400
4	0.43	0.53	0.55	0.59	0.66
5	0.45	0.48	0.51	0.55	0.61
6	0.49	0.51	0.55	0.61	0.68
7	0.51	0.54	0.65	0.68	0.73
8	0.41	0.44	0.49	0.51	0.54
9	0.41	0.47	0.52	0.55	0.59
10	0.46	0.50	0.53	0.56	0.62
11	0.53	0.58	0.61	0.66	0.71
Tannic acid	0.90	0.76	0.73	0.69	0.61