Table 3. Inhibitory Effects of Compounds 1–10 on NO Production Induced by LPS in Macrophages (IC₅₀ Values in μM)^a.

compounds	IC50 ± SD (μM)
1	27.35 ± 1.53
2	23.53 ± 1.15
3	28.96 ± 1.78
4	30.25 ± 1.78
5	66.28 ± 1.59
6	25.72 ± 0.98
7	24.33 ± 1.32
8	31.15 ± 0.84
9	34.36 ± 1.12
10	38.72 ± 1.06
l-NAME	36.75 ± 1.32

^al-NAME was used as the positive control.