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Yongyue Wang Zhirong Cui Jun Chi Pengfei Tang Meihui Zhang Jixin Li Yongyi Li Hao Zhang Jun Luo Lingyi Kong 《中国化学》2021,39(1):129-136
Sarcaglarols A—D ( 1 — 4 ), two pairs of lindenane?monoterpene heterodimers fused by a 1,2‐dioxane moiety, were discovered and isolated from the leaves of Sarcandra glabra guided by MS/MS molecular networking‐based strategy. Their planar structures, absolute configurations of basic skeleton and flexible polyhydric side chain were established by analysis of HRESIMS, NMR spectroscopic data, ECD spectrum, and the X‐ray diffraction study of isopropylidene derivatives. An intermolecular [2+2+2] cycloaddition may play a key role in the biosynthesis pathway of the 1,2‐dioxane moiety fused lindenane?monoterpene heterodimer skeleton, which can be recognized as the biogenetic precursors of our previous reported lindenane?normonoterpene conjugates. In addition, compounds 1 , 3 and 4 exhibited moderate inhibitory effects of lipid accumulation in free fatty acid‐exposed L02 cells. 相似文献
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One new sesquiterpene lactone,1 α,8 α,9 α-trihydroxyeudesman-3(4),7(11)-dien-8 β,12-olide(1) and two new phenylpropanoidsubstituted catechin glycosides,glabraoside C(2) and glabraoside D(3) were isolated from the whole plant of Sarcandra glabra. Their structures were established by the analyses of spectral and chemical evidences. 相似文献
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提出一种基于表面增强拉曼光谱的中药材肿节风饮片的检测方法。采用柠檬酸三钠还原硝酸银制备银溶胶,以银胶纳米粒子为增强基底测得肿节风茎切片的表面增强拉曼光谱(SERS)。发现银胶直接作用于药材表面的SERS信号明显增强,肿节风茎切片SERS光谱中在637,1 176,1 309,1 476,1 612 cm-1处都可观察到明显的拉曼特征峰。通过一阶导数拉曼光谱分析技术和对照品异嗪皮啶谱峰指认,可将获得的SERS峰位分别归属于吡喃酮环、甲氧基和酚羟基分子结构。研究结果表明,SERS技术可为肿节风和其他中草药的生产和质量监控提供一种快速、方便和直接的检测方法。 相似文献
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One new coumarin, 3,5-dihydroxy-7-O-α-L-rhamno pyranosyl-2H-chromen-2-one (1), was isolated from the whole plant of Sarcandra glabra. The structure was elucidated by spectroscopic methods. Our results indicated that 1 significantly inhibit nitric oxide (NO) production in LPS-induced RAW264.7 macrophages. RT-PCR analysis indicated it inhibited iNOS mRNA expression. In addition, Western blot analysis showed that 1 attenuated LPS-induced synthesis of iNOS protein in the macrophages. These results suggest that 1 could be potential anti-inflammatory agent by down-regulating iNOS expression. 相似文献
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Xiu-Feng He Sheng Zhang Rong-Xiu ZhuSheng-Ping Yang Tao YuanJian-Min Yue 《Tetrahedron》2011,67(18):3170-3174
Two novel lindenane-type sesquiterpenoid dimers, sarcanolides A (1) and B (2), were isolated from the whole plants of Sarcandra hainanensis. These compounds feature a new nonacyclic scaffold in which the bond formation of C-11-C-7′ imposed the five-membered lactone ring in a full β-direction. Their structures, including the absolute configuration, were determined by NMR analysis, CD exciton chirality method, and ECD calculation. 相似文献
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HPLC法测定肿节风药材中异秦皮啶和迷迭香酸的含量 总被引:1,自引:0,他引:1
建立了肿节风中异秦皮啶和迷迭香酸含量的测定方法。以乙腈-0.1%磷酸溶液(20:80,V/V)为流动相,流速为1.0 mL/min,柱温35℃,UV检测波长为342 nm。样品经0.45μm微孔滤膜过滤后,按选定的色谱条件进行分析,异秦皮啶和迷迭香酸分别在0.011~2.214μg/mL、0.022~2.198μg/mL范围内线 相似文献
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A simple, rapid, selective and reproducible capillary electrophoresis (CE) method was firstly developed for the identification and determination of isofraxidin and fumaric acid in a traditional Chinese herb Sarcandra glabra and its medicinal preparations. The buffer solution used in this method was 7.5 mM NaH2PO4 and 7.5 mM borax solution adjusted to pH 8.60. The linear calibration range was 1.25-800 μg ml−1 (r=0.9997) for isofraxidin and 10-800 μg ml−1 (r=0.9992) for fumaric acid, respectively. Under the optimum conditions, the relative standard deviation (R.S.D.) values of the migration time and the peak area were 0.47, 3.45% for isofraxidin and 0.83, 3.24% for fumaric acid, respectively. The recoveries ranged between 95.4-103.8% for isofraxidin and 97.1-104.7% for fumaric acid, respectively. The contents of isofraxidin and fumaric acid in Sarcandra glabra and two kinds of Sarcandra glabra-containing Chinese medicinal preparations were successfully determined within 8 min. 相似文献
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Two new‐skeleton compounds, sarcaboside A ( 1 ) together with its artifact sarcaboside B ( 2 ), were isolated from the whole plant of Sarcandra glabra. Their structures were elucidated on the basis of extensive spectroscopic analysis as well as HR‐ESI‐MSn study. 相似文献
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采用固相萃取方法,建立了草珊瑚中苯并[α]芘的高效液相色谱荧光测定方法。以正己烷为提取溶剂对草珊瑚样品进行提取,经中性氧化铝固相萃取柱净化样品后,用高效液相色谱荧光检测器检测,荧光检测器激发波长为370 nm,发射波长为425 nm,流动相为乙腈-水(85∶15),流速为1.0 m L/min。结果表明:苯并[α]芘在0~20 ng/m L浓度范围内线性关系良好,相关系数(r)为0.999 9,定量下限为0.36μg/kg,回收率为84.4%~101.9%,相对标准偏差(RSD)为1.6%~5.6%。该方法准确,灵敏度高,重复性好,适用于植物药材中苯并[α]芘残留的测定。 相似文献
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Yuan LI Dong Ming ZHANG Shi Shah YU Jian Bei LI Yong Ming LUO 《中国化学快报》2006,17(2):207-210
Sarcandra glabra (Thunb.) Nakai [Chloranthus glaber (Thunb.) Makino] (Chloranthace-ae) grows in the southern part of China, Japan and southeastern Asia. It is cultivated inJapan as ornamental plant. The whole plant has been used as an antibacterial and an… 相似文献
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