abstract |
The inventors of the present invention invented a simple and effective way to synthesize compounds 1-9 of natural prenylated chalcones and pyrano chalcones by using Claisen-Schmidt condensation as a main step. In addition, an anti-inflammatory effect of synthetic compounds was evaluated in RAW 264.7 macrophages which were stimulated with a lipopolysaccharide. As a result, chalcone compounds having prenyl groups in a ring A (an acetophenone part) show weak inhibition or no inhibition on the generation of nitrogen oxide while chalcones (5, 6, 8, and 9) having no prenyl groups in the ring A show normal or good activity, and have no cytotoxicity. |