Analogues of yakuchinones were synthesized as inhibitors of nitric oxide production in lipopolysaccharide-activated macrophage cell line, RAW 264.7 cells. We prepared stronger inhibitors than the original natural molecules, yakuchinones A and B reported from Alpinia oxyphylla. From the limited structural activity relation study of analogues, we concluded that the optimal length of linker between two aryl groups and the presence of enone moiety in the linker were identified as essential for the activity. The IC50 value of the most potent structure was 0.92 μM. The active analogues suppressed the expression of inducible nitric oxide synthase protein and mRNA.
合成了类
黄酮化合物作为抑制脂
多糖激活的巨噬
细胞系RAW 264.7细胞中
一氧化氮产生的
抑制剂。我们制备了比来自毛竹(Alpinia oxyphylla)的天然分子
黄酮A和B更强的
抑制剂。通过对类化合物的有限结构活性关系研究,我们得出结论:维持两个芳基之间的连接链的最佳长度以及连接链中存在烯酮基团对活性至关重要。最有效结构的IC50值为0.92μM。活性类化合物抑制了诱导型
一氧化氮合酶蛋白及其mRNA的表达。