their structures were confirmed by 1H NMR, 13C NMR and elemental analyses. Antiviral bioassays revealed that most of the compounds exhibited good antiviral activity against tobacco mosaic virus (TMV) at a concentration of 500 μg mL−1. The designated compound 4l was 50% effective in terms of curative and protective activities against TMV with 50% effective concentrations (EC50) of 10.9 and 79.4 μg mL−1
合成了一系列含有
1,2,4-三嗪部分的新型
查尔酮衍
生物,并通过1 H NMR、13 C NMR和元素分析证实了其结构。抗病毒
生物测定表明,大多数化合物在浓度为500 μg mL -1时对烟草花叶病毒(TMV)表现出良好的抗病毒活性。化合物4l对TMV的治疗和保护活性为50%有效,50%有效浓度(
EC 50)分别为10.9和79.4 μg mL -1,优于宁南霉素(81.4和82.2 μg mL -1 ) 。 )。微尺度热泳(
MST)还显示,化合物4l与外壳蛋白(TMV-CP)的结合产生的K d值为0.275 ± 0.160 μmol L -1,优于宁南霉素(0.523 ± 0.250 μmol L -1 ))。同时,4l与TMV-CP(PDB代码:1EI7)的分子对接研究表明,该化合物很好地嵌入TMV-CP两个亚基之间的口袋中。同时,化合物4a对青枯菌(R. solanacearum)表现出优异的抗菌活性,
EC