New 20(S)-protopanaxadiol type saponins from the leaves of Panax notoginseng and their potential anti-inflammatory activities
作者:Jingya Ruan、Fan Sun、Ying Zhang、Dandan Zheng、Guilin Xiang、Wei Zhao、Yi Zhang、Tao Wang
DOI:10.1016/j.steroids.2020.108696
日期:2020.10
of various chromatographies, 11 new 20(S)-protopanaxadiol (PPD) type saponins, named as notoginsenosides NL-E1-NL-E4 (1-4), NL-F1 (5), NL-F2 (6), NL-G1 (7), NL-G2 (8), NL-H1-NL-H3 (9-11) were obtained from the leaves of Panax notoginseng. Their structures were ascertained based on the extensive spectroscopic methods and chemical reactions. Meanwhile, the 20(S)-PPD type saponins with aglycone, (20S,24ζ)-3β
通过各种色谱组合,11种新的20(S)-原人参二醇(PPD)型皂苷被命名为三七皂苷NL-E1-NL-E4(1-4)、NL-F1(5)、NL-F2(6) , NL-G1 (7), NL-G2 (8), NL-H1-NL-H3 (9-11) 是从三七叶中提取的。它们的结构是基于广泛的光谱方法和化学反应确定的。同时,20(S)-PPD型皂苷与苷元(20S,24ζ)-3β,12β,20,24,25-五羟基丹马烷仅在三七叶中发现。该特征可用于区分三七叶的提取物与其根、根茎、花或种子等其他药用部位。此外,在脂多糖 (LPS) 刺激的 RAW264.7 细胞中检查了所有化合物的一氧化氮 (NO) 抑制活性。结果,化合物 2-7,10 可以在 25 μM 下发挥 NO 抑制活性而没有细胞毒性。此外,它们的抑制活性在 1、10 和 25 μM 时呈剂量依赖性。特别是,三七皂苷 NL-F2 (6) 在 1 μM