Abstract
One new mesomer, ficusnaph A (1), two new phenolic acid derivatives, ficusnaphs B and C (2 and 3) together with three known biogenetically related polysubstituted naphthalene derivatives (4-6) were isolated from the stems of Ficus esquiroliana Levl. The structures of these compounds were elucidated using comprehensive spectroscopic methods. Compounds 1-6 were evaluated the inhibitory activities against the nitric oxide (NO) production induced by lipopolysaccharide (LPS) in mouse macrophage RAW264.7 cells in vitro. Compounds 1 and 2 showed significant inhibitory activity with the IC50 value of 3.12±0.14 and 7.66±0.18 μM, respectively.
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