Synthesis and antibacterial activity of novel myricetin derivatives containing sulfonylpiperazine
作者:Jun He、Xue-Mei Tang、Ting-Ting Liu、Feng Peng、Qing Zhou、Li-Wei Liu、Ming He、Wei Xue
DOI:10.1007/s11696-020-01363-3
日期:2021.3
Myricetin derivatives containing sulfonylpiperazine were synthesized and their structures were confirmed by NMR and HRMS. The antibacterial activity results indicated that some compounds showed good antibacterial activity against Xanthomonas oryzaepv. oryzae (Xoo), Xanthomonas axonopodispv. citri (Xac) and Ralstonia solanacearum (Rs). Among them, compounds 4m and 4p revealed excellent antibacterial activities
合成了含有磺酰基哌嗪的杨梅素衍生物,并通过NMR和HRMS证实其结构。抗菌活性结果表明,某些化合物对米生黄单胞菌具有良好的抗菌活性。米(Xoo),黄单胞菌(Xanthomonas axonopodispv)。柠檬(Xac)和青枯菌(Rsstonia solanacearum)(Rs)。其中,化合物4m和4p对Rs表现出优异的抗菌活性,其浓度为最大作用浓度的50%(EC 50)值分别为4和4μg/ mL,优于对照药物比美噻唑(13μg/ mL)和硫二唑铜(185μg/ mL)。如使用扫描电子显微镜(SEM)所观察到的,这些化合物通过引起细菌表面的折叠和变形而起作用,从而导致细菌结构不完整,从而达到抑菌的目的。合成的杨梅素衍生物有望指导新型抗菌剂的研究方向。