Table 3.

Anti-oxidant assays by ABTS method [Abs. (control) − Abs. (test)/Abs. (control) × 100].

Compounds	Absorbance of samples	Inhibition (%)
ABTS control	0.54	0
Ascorbic acid	0.06	88.9
4a	0.18	66.7
4b	0.20	63.0
5a	0.40	25.9
5b	0.42	22.2
6a	0.30	44.4
6b	0.32	40.7
7	0.11	79.6
8	0.10	81.5