Synthesis of a novel series of diphenolic chromone derivatives as inhibitors of NO production in LPS-activated RAW264.7 macrophages
作者:Guo-Biao Liu、Jian-Liang Xu、Mei Geng、Rui Xu、Rong-Rong Hui、Jian-Wei Zhao、Qiang Xu、Hong-Xi Xu、Jian-Xin Li
DOI:10.1016/j.bmc.2010.03.020
日期:2010.4
A novel series of diphenolic chromone derivatives were synthesized and their inhibitory activity on nitric oxide (NO) production and cytotoxicity were evaluated using LPS-activated murine macrophages RAW264.7 assay and MTT method, respectively. Among these compounds, (5,7-dihydroxy-4-oxo-4H-chromen-3-yl) methyl esters (6b, 6c, 6f, 6g, and 6h) showed quite potent inhibitory activities with IC50 values
合成了一系列新的双酚色酮衍生物,并分别通过LPS激活的鼠巨噬细胞RAW264.7测定和MTT方法评估了它们对一氧化氮(NO)产生的抑制活性和细胞毒性。在这些化合物中,(5,7-二羟基-4-氧代-4 H-铬烯-3-基)甲基酯(6b,6c,6f,6g和6h)具有很强的抑制活性,IC 50值为2.20,分别为3.48、0.35、0.80和0.61μM。MTT结果表明,在有效浓度下,所有活性化合物均未显示出细胞毒性。最有效化合物的初步机理(6b,基于RT-PCR结果进一步检查了6c,6f,6g和6h),并且化合物6f,6g和6h通过以剂量依赖性方式抑制iNOS mRNA的表达来抑制NO产生。此外,对理化参数的计算分析表明,大多数化合物具有类似药物的特性。