innovative, inexpensive, and high-efficiency antibacterial agents targeting these infections are challenging. Herein, a series of novel epimeric and chiral 18β-glycyrrhetinic acid (GA) ester derivatives with various tertiary amine pendants were designed, synthesized, and screened for pharmacological activity. Results showed that some of the title compounds were conferred with significantly enhanced antibacterial
由于只有少数几种农药可以控制细菌感染,因此针对这些感染的创新,廉价,高效抗菌剂的发现和开发具有挑战性。本文中,设计,合成和筛选了具有各种叔胺侧基的一系列新颖的差向异构和手性18β-
甘草次酸(GA)酯衍
生物。结果表明,某些标题化合物被赋予对植物病原体黄单胞菌pv
水稻(A2,B1-B3和C1,
EC50值在3.81-4.82μg/ mL之内)和黄单胞菌xanthomonas axonopodis pv citri(B1,
EC50 = 3.18μg/ mL; B2,
EC50 = 2.76μg/ mL)。这些活性优于GA(
EC50> 400μg/ mL),
硫代二唑
铜和比美
噻唑的活性。药理学研究表明,GA骨架和叔胺支架的协同作用有助于
生物学作用。体内实验显示了其在控制细菌感染中的有希望的应用。抗菌机制研究表明,标题化合物可以触发被测病原体的凋亡,这在扫描电子显微镜图像中观察到的细菌形态变化中可以明显看