Three new thionic compounds,(S)-2-(2-carboxyl-2-hydroxyethylthio)-ferulic acid(1),(E)-2-methoxy-4-(3-(methylsulfonyl)prop-1-en-1-yl)phenol(2), and thiosenkyunolide C(3), together with two new aromatic glycosides(4 and...Three new thionic compounds,(S)-2-(2-carboxyl-2-hydroxyethylthio)-ferulic acid(1),(E)-2-methoxy-4-(3-(methylsulfonyl)prop-1-en-1-yl)phenol(2), and thiosenkyunolide C(3), together with two new aromatic glycosides(4 and 5) were isolated from the rhizome of Ligusticum chuanxiong Hort. Two known compounds(6 and 7) were also obtained. Their structures were elucidated based on extensive spectroscopic data(UV, IR, 1D and 2D NMR, and HR-ESI-MS). Furthermore the absolute configurations were established by comparison of their calculated and experimental circular dichroism spectra and by a dimolybdenum tetraacetate [Mo_2(AcO)_4]-induced circular dichroism procedure. All compounds were evaluated against lipopolysaccharide(LPS)-induced NO production in BV2 cells, and compounds 4 and 5 showed strong inhibitory activities with IC_(50) values of 2.03 and 3.09 μmol/L, respectively(positive control curcumin, IC_(50)=6.17 μmol/L). In addition, compound 1 showed weak proteintyrosine phosphatase-1 B(PTP1B) inhibitory activity.展开更多
以川芎中的内酯成分得率为指标,选取提取温度、提取时间、液固比、药材颗粒度以及水解p H 5个因素,在单因素考察基础上采用正交实验对提取工艺进行优化,继而分离得到单体化合物,最后用液相色谱质谱(LC MS)联用技术及核磁共振仪(NMR)对...以川芎中的内酯成分得率为指标,选取提取温度、提取时间、液固比、药材颗粒度以及水解p H 5个因素,在单因素考察基础上采用正交实验对提取工艺进行优化,继而分离得到单体化合物,最后用液相色谱质谱(LC MS)联用技术及核磁共振仪(NMR)对产物进行结构表征。结果表明,最佳提取工艺条件为:提取温度30℃,提取时间50 min,液固比15 m L/g,药材颗粒度>150~180μm,水解p H=13.0,川芎内酯得率可达5.91%。在最佳工艺条件下制得的化合物进一步分离得到欧当归内酯A。展开更多
基金supported by the National Natural Science Foundation of China (No.81773588)
文摘Three new thionic compounds,(S)-2-(2-carboxyl-2-hydroxyethylthio)-ferulic acid(1),(E)-2-methoxy-4-(3-(methylsulfonyl)prop-1-en-1-yl)phenol(2), and thiosenkyunolide C(3), together with two new aromatic glycosides(4 and 5) were isolated from the rhizome of Ligusticum chuanxiong Hort. Two known compounds(6 and 7) were also obtained. Their structures were elucidated based on extensive spectroscopic data(UV, IR, 1D and 2D NMR, and HR-ESI-MS). Furthermore the absolute configurations were established by comparison of their calculated and experimental circular dichroism spectra and by a dimolybdenum tetraacetate [Mo_2(AcO)_4]-induced circular dichroism procedure. All compounds were evaluated against lipopolysaccharide(LPS)-induced NO production in BV2 cells, and compounds 4 and 5 showed strong inhibitory activities with IC_(50) values of 2.03 and 3.09 μmol/L, respectively(positive control curcumin, IC_(50)=6.17 μmol/L). In addition, compound 1 showed weak proteintyrosine phosphatase-1 B(PTP1B) inhibitory activity.
文摘以川芎中的内酯成分得率为指标,选取提取温度、提取时间、液固比、药材颗粒度以及水解p H 5个因素,在单因素考察基础上采用正交实验对提取工艺进行优化,继而分离得到单体化合物,最后用液相色谱质谱(LC MS)联用技术及核磁共振仪(NMR)对产物进行结构表征。结果表明,最佳提取工艺条件为:提取温度30℃,提取时间50 min,液固比15 m L/g,药材颗粒度>150~180μm,水解p H=13.0,川芎内酯得率可达5.91%。在最佳工艺条件下制得的化合物进一步分离得到欧当归内酯A。