藏波罗花根中两个酚苷的分离纯化、结构鉴定和抗氧化活性研究(英文)

被引:8
作者
潘为高 [1 ]
蒋思萍 [2 ]
罗彭 [1 ]
高平 [3 ]
陈彬 [2 ]
卜海涛 [2 ]
机构
[1] 广西中医学院
[2] 西藏高原生物研究所
[3] 四川大学生命科学学院生物资源与生态环境教育部重点实验室
关键词
藏波罗花; 生物活性跟踪法; 抗氧化剂;
D O I
暂无
中图分类号
R284.1 [化学分析与鉴定];
学科分类号
100804 [中药化学];
摘要
利用生物活性跟踪法,通过硅胶吸附柱色谱、反相C18柱色谱和反相制备型HPLC,从藏波罗花的根中筛选到两个化合物。通过ESI-MS、GC-MS、1D-和2D-NMR进行结构鉴定,确定为acteoside(1)和isoacteoside(2)。1和2的-OH清除活性与苯甲酸接近,1和2的-OH及O-2-清除活性均远远高于维生素C,1和2的肝组织LPO抑制活性也高于BHT或维生素C,1和2在保护红细胞免受氧化损伤的活性也高于维生素C。在0.015 6至0.500 0 mg·mL-1浓度范围,1和2的-OH清除活性与浓度成正相关关系。在0.001 9至0.250 0 mg·mL-1浓度范围,随着浓度的增大,1和2的肝组织LPO抑制活性不断增强;但在0.250 0至1.000 0 mg·mL-1浓度范围,随着浓度的增大,LPO抑制活性反而有轻微的下降。
引用
收藏
页码:422 / 427
页数:6
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