Table 2.

Radical scavenging and cytotoxicity activities of compounds 1–6.

Compounds	DPPH Radical Scavenging		Cytotoxicity
	% at 100 µM	EC50, µM	IC50, µM
1	51.9 ± 1.3	-	>100
2	88.9 ± 2.9	-	>100
3	62.0 ± 4.6 [16]	-	>100
4	67.8 ± 1.1	-	75.7 ± 5.6
5	50.6 ± 1.3	101.3 ± 2.8	78.9 ± 1.9
6	83.5 ± 0.2	-	>100