Table 3.

The DPPH scavenging ability (EC₅₀ mg/mL) of the derivatives 6a, 6b, 7a_1–7, 7b_1–7.

Sample	EC50 mg/mL	Sample	EC50 mg/mL
6a	0.136 ± 0.0006	6b	0.127 ± 0.0013
7a1	0.094 ± 0.0013	7b1	0.106 ± 0.0011
7a2	0.107 ± 0.0018	7b2	0.101 ± 0.0044
7a3	0.066 ± 0.0011	7b3	0.049 ± 0.0006
7a4	0.077 ± 0.0005	7b4	0.085 ± 0.0017
7a5	0.038 ± 0.0044	7b5	0.038 ± 0.0024
7a6	0.039 ± 0.0008	7b6	0.037 ± 0.0037
7a7	0.048 ± 0.0001	7b7	0.038 ± 0.0014
AA	0.0065 ± 0.0031

Data are mean ± SD (n = 3, p< 0.05).