Table 1 The result of antioxidant activity of synthesised compounds using ferric reducing antioxidant power (FRAP)

3a

0.804*

0.820**

0.856*

3b

0.757*

0.764*

0.782*

3c

0.738*

0.759*

0.781**

3d

0.716

0.751**

0.802

3e

0.671**

0.690*

0.741**

3f

0.658*

0.673*

0.716**

3g

0.451**

0.476**

0.514*

3h

0.420*

0.431*

0.497*

3i

0.402**

0.425*

0.440

3j

0.814*

0.837*

0.863*

3k

0.792*

0.813**

0.850*

3l

0.590*

0.615*

0.631*

3m

0.612*

0.630*

0.657**

3n

0.620**

0.643*

0.683**

BHA

0.942*

1.136**

1.352*

TBHQ

0.956*

1.257*

1.394**