The genus Salix L. is traditionally used in folk medicine to alleviate pain caused by various kinds of inflammation. In the present study, 10 undescribed salicin derivatives along with 5 known congeners were isolated from the barks of Salix tetrasperma, and their structures were elucidated by spectroscopic analyses, single-crystal X-ray diffraction, electronic circular dichroism (ECD) calculations
柳属传统上在民间医学中用于缓解各种炎症引起的疼痛。在本研究中,从四子柳的树皮中分离出 10 种未描述的水杨苷衍生物以及 5 种已知的同系物,并通过光谱分析、单晶 X 射线衍射、电子圆二色性 (ECD) 计算和化学分析阐明了它们的结构。转换。化合物4 – 6显着抑制脂多糖 (LPS) 诱导的 RAW 264.7 巨噬细胞中 NO 的产生,其中最活跃的4明显抑制 IL-1β 和 IL-6 的产生,并以剂量依赖性方式降低 iNOS 和 COX-2 的表达。进一步的Western blotting分析显示4的抗炎机制可能是通过MAPK和NF-κB信号通路介导的。