Anti-Inflammatory Compounds from Vietnamese Piper bavinum

Table 1

NO production inhibitory activity of isolated compounds 1–8.

Compound	IC50 value (μM)^a
1	>30
2	>30
3	>30
4	5.2 ± 0.4
5	13.5 ± 1.5
6	>30
7	>30
8	>30
Celastrol^b	1.0 ± 0.1

^aThe inhibitory effects are represented as the molar concentration (μM) giving 50% inhibition (IC₅₀) relative to the vehicle control. These data represent the average values of three repeated experiments (mean ± SD). ^bPositive control for NO.