Twelve 4-aryl-3,4-dihydrocoumarins were synthesized by the condensation of phenols with the corresponding substituted cinnamic acids in the presence of nitrobenzene and sulfated montmorillonite K-10. This method displayed the property of green chemistry with respect of reuse of the catalyst. These compounds were evaluated for hydroxyl radical scavenging activity in vitro. Results showed that compounds with 7,8-dihydroxy groups had relatively strong hydroxyl radical scavenging activity.
在
硝基苯和
硫酸化
蒙脱石 K-10 的存在下,通过
苯酚与相应的取代
肉桂酸缩合,合成了 12 种 4-芳基-3,4-二氢
香豆素。这种方法具有催化剂可重复使用的绿色
化学特性。对这些化合物进行了体外羟基自由基清除活性评估。结果表明,带有 7,8- 二羟基的化合物具有相对较强的羟自由基清除活性。