Cytotoxicity and NO inhibition activities of compounds 1–11^a,b.

Compounds	NO inhibition RAW 264.7 macrophages	Cytotoxicity (HepG2)
3	5.79 ± 0.18	5.23 ± 0.12
4	23.90 ± 2.1	>50
6	6.93 ± 0.89	8.67 ± 1.02
7	20.54 ± 0.63	>50
L-NMMAc	41.88 ± 0.91	—
Doxorubicinc	—	1.04 ± 0.37

^aValues were expressed as the means ± SD based on three independent experiments.

^bCompounds 1,2,5,8–11 were inactive.

^cPositive controls.