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1.
Zhi‐Bin Wang Hui‐Yuan Gao Chun‐Juan Yang Zhi Sun Li‐Jun Wu 《Helvetica chimica acta》2011,94(5):847-852
Four non‐cyanogenic cyanoglucosides including hydranitrilosides A1, A2, B1, and B2 ( 1 – 4 , resp.), together with a new phenolic glucoside, 3‐hydroxy‐4‐methoxybenzoic acid 3‐O‐β‐D ‐glucopyranoside ( 5 ), were isolated from the leaves of Hydrangea macrophylla. Their structures were determined on the basis of chemical and spectral evidence. 相似文献
2.
Forsythiasuspensa(ThUnb.)VahlhasbeenusedintradihonalChinesemedicineforanhiallammatoryandamibacterialpmposes.AnUInberofcompoundssuchasforsythiaside,phillygeninrengyoletc.haVebeenidentifiedl-#fromthefactsofmisplat.AsPartofourstudyontheachveprinciplesoftradihonalChinesemedicine,wereinvestigatCdthechemicalconstitllentsofRsuspensa.heartycompoundshavebeenisolatCdfromthisspecies.ThispaperdescribesthestrUcturalelucidahonofthreenewcompoundsfsuspenolicacid(1),forSythensideA(2),andforsythensideB(3)… 相似文献
3.
A new xanthone glycoside, 3,5,7,8-tetramethoxyxanthone-1-O-β-D-glucopyranoside (1), along with five known compounds, mangiferin (2), kaempferol (3), quercetin (4), chlorogenic acid (5) and diploptene (6), was isolated from the whole plants of Pyrrosia sheareri (Bak.) Ching. The structure of compound 1 was established on the basis of extensive spectroscopic analyses and chemical methods. 相似文献
4.
JianYuanYIN QinMENG EnSiWANG 《中国化学快报》2005,16(1):53-56
A nonasaccharide saponin, new hederagenin saponin, had been isolated from the bark ofKalopanax septemlobus (Thunb.) Koidz., and its structure was elucidated by HRESI-MS, NMR experi-ments and chemical analyses as 3-O-β-D-xylopyranosyl-(1→4)-13-D-xylopyranosyl-(1→3)-α-L-rhamno-pyranosyl-(1→2)-α-L-arabinopyranosyl hederagenin 28-O-β-D-xylopyranosyl-(1→3)-β-D-xylopyra-nosyl-(1→2)-[α-L-rhamnopyranosyl-(1→4)-β-D-glucopyranosyl-(1→6)]-β-D-glucopyranoside. 相似文献
5.
Fulin Wang Xue Liu Yueru Chen Ying An Wei Zhao Lu Wang Jinli Tian Degang Kong Yang Xu Yahui Ba Honglei Zhou 《Molecules (Basel, Switzerland)》2022,27(19)
In this paper, the confusion of the sources of medicinal materials was briefly expounded, and the differences among the varieties were pointed out. At the same time, the chemical components and pharmacological properties of Elsholtzia ciliata (Thunb.) Hyland (E. ciliata) were reviewed. The structures of 352 compounds that have been identified are listed. These mainly include flavonoids, terpenoids, phenylpropanoids, alkaloids, and other chemical components. They have antioxidant, anti-inflammatory, antimicrobial, insecticidal, antiviral, hypolipidemic, hypoglycemic, analgesic, antiarrhythmic, antitumor, antiacetylcholinesterase, and immunoregulator activities. At present, there are many researches using essential oil and alcohol extract, and the researches on antioxidant, anti-inflammatory, anti-microbial, and other pharmacological activities are relatively mature. This paper aims to summarize the existing research, update the research progress regarding the phytochemicals and pharmacology of E. ciliate, and to provide convenience for subsequent research. 相似文献
6.
微波辅助萃取鬼箭羽叶中芦丁和槲皮素 总被引:1,自引:0,他引:1
建立了鬼箭羽中主要有效成分芦丁和槲皮素的MAE-HPLC定量分析方法, 该方法具有测定准确、操作简便和分析速度快等优点. 此外, 利用扫描电镜观察了鬼箭羽叶经微波辅助萃取后植物结构的变化, 初步证明了微波辅助萃取鬼箭羽叶的萃取机理符合细胞破壁学说. 相似文献
7.
<正>A new flavone glucoside,selagin-7-O-(6″-O-acetyl-)-β-D-glycoside,has been isolated from Cancrinia discoidea(Ledeb.) Poljak.Its structure was identified by spectroscopic methods,2D NMR and MS.Compounds exhibited activity of anti-inflammatory in vitro. 相似文献
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9.
Stanley E. Ukwueze Patience O. Osadebe Festus B.C. Okoye 《Natural product research》2015,29(18):1728-1734
Bioactivity-guided fractionation of methanol extract from the leaves of Psidium guajava L. (Myrtaceae) yielded a new benzophenone glycoside, Guajaphenone A (2) together with two known compounds, Garcimangosone D (1) and Guaijaverin (3). Their structures were elucidated by analysis of spectroscopic data including 1D and 2D NMR and electrospray ionisation mass spectrometry (ESI-MS). The isolated compounds were screened against standard strains of Gram-positive and Gram-negative bacteria using broth dilution assay method, and the MIC values determined and compared with reference antibiotic ceftriaxone. They were found to have significant antibacterial activities against Escherichia coli and Staphylococcus aureus with all of them showing better activities against S. aureus, but displaying weaker activities, in comparison to ceftriaxone. However, despite reduced effect of these compounds against the organisms, this work opens the perspective to use these molecules as ‘leads’ for the design of novel and selective drug candidates for some tropical infectious diseases. 相似文献
10.
Johannes Wellmann Beate Hartmann Esther-Corinna Schwarze Silke Hillebrand Stephan I. Brueckner Jakob Ley Gerold Jerz Peter Winterhalter 《Molecules (Basel, Switzerland)》2022,27(11)
Previously, different Hydrangea macrophylla ssp. serrata cultivars were investigated by untargeted LC-MS analysis. From this, a list of tentatively identified and unknown compounds that differ significantly between these cultivars was obtained. Due to the lack of reference compounds, especially for dihydro-isocoumarins, we aimed to isolate and structurally characterise these compounds from the cultivar ‘Yae-no-amacha’ using NMR and LC-MS methods. For purification and isolation, counter-current chromatography was used in combination with reversed-phase preparative HPLC as an orthogonal and enhanced purification workflow. Thirteen dihydro-isocoumarins in combination with other metabolites could be isolated and structurally identified. Particularly interesting was the clarification of dihydrostilbenoid glycosides, which were described for the first time in H. macrophylla ssp. serrata. These results will help us in further studies on the biological interpretation of our data. 相似文献
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12.
目的运用火焰原子吸收光谱法测定中草药海金沙茎中的Fe、zn、Mg、Ca、Cu5种微量元素的含量。方法用浓HNO3-HCIO4消解样品,采用标准曲线法测定其5种金属元素含量。结果所测的样品中含有丰富的人体必需微量元素。方法回收率在98.68%~104.4%之间,样品相对偏差小于5%。结论该法快速简便、重复性好、准确度好,适用于同类生物样品中微量元素的测定,结果令人满意。 相似文献
13.
A novel dimeric flavonol glycoside, Cynanflavoside A (1), together with six analogues, kaempferol-3-O-α-L-rhamnopyranosyl-(1→2)-β-D-glucopyranoside (2), quercetin-3-O-α-L-rhamnopyranosyl-(1→2)-β-D-glucopyranoside (3), kaempferol-3-O-α-L-rhamnopyranosyl-(1→2)-β-D-xylopyranoside (4), quercetin-3-O-α-L-rhamnopyranosyl-(1→2)-β-D-xylopyranoside (5), kaempferol-3-O-β-D-glucopyranosyl-7-O-α-L-rhamnopyranoside (6), and quercetin-3-O-galactoside (7) were isolated from the n-butyl alcohol extract of Cynanchum acutum subsp. sibiricum. Their structures were determined spectroscopically and compared with previously reported spectral data. All compounds were evaluated for their anti-complementary activity in vitro, and only compound 5 exhibited anti-complement effects with CH50 value of 0.33 mM. 相似文献
14.
Chao Luo Ali Wang Xiaohan Wang Jing Li Hongwei Liu Mingan Wang 《Natural product research》2015,29(19):1811-1819
One new proline-containing flavonol glycoside, namely kaempferol-3-O-methyl-7-O-β-d-glucopyranosyl-8-(1-methyleneproline)-4′-O-β-d-glucopyranoside (1), together with 15 known flavonoids, 3-O-methylkaempferol (2), 3-O-methylquercetin (3), quercetin (4), kaempferol (5), apigenin (6), rhamnazin (7), astragalin (8), alquds (9), quercitrin (10), rutin (11), isoquercitrin (12), apigetrin (13), myricitrin (14), hesperidin (15) and calycosin-7-O-β-d-glucopyranoside (16) were isolated from the aerial parts of Caragana leucophloea Pojark. (Leguminosae). Their structures were determined on the basis of spectroscopic analyses and by comparison with literature data. Compounds 2–4 revealed a strong antimicrobial activity with minimum inhibitory concentration values of 12.5–150 μg/mL and median inhibitory concentration (IC50) values of 7.42–76.61 μg/mL. Compounds 3, 4, 6–8, 10–12 and 14 showed strong antioxidant activity. Compounds 2–7 exhibited moderate antinematodal activity on Caenorhabditis elegans with IC50 values of 40.51–68.05 μg/mL. 相似文献
15.
A new phenylethanoid glycoside,seulponisidc(1) was isolated from the aerial parts of Isodon sculponeatus(Vaniot) Kudo, along with six known compounds martynoside(2),verbascoside(3),(+)-hydroxypinoresinol-8-O- β-D-glucoside(4),cedrusin(5), 7-megastigmene-3S,5R,6R,7E,9S-tetrol(6) and 4-oxo- β-ionol- β-D-glucopyranoside(7).Their chemical structures were elucidated from physieochemical data and by acidic hydrolysis. 相似文献
16.
Three new glycosides, 7-deoxyloganic acid beta-D-glucopyranosyl ester (1), (3R)-hydrangenol 8,4'-di-O-beta-D-glucopyranoside (2), and (6R,7E,9R)-megastigma-4,7-dien-3-one 9,13-di-O-beta-D-glucopyranoside (3), have been isolated from the leaves of Hydrangea macrophylla subsp. serrata (THUNB.) MAKINO (Saxifragaceae). The structures of 1-3 were elucidated on the basis of spectral data and chemical evidence. 相似文献
17.
<正>A new flavonoidic glycoside,tricin-4'-O-β-L-arabinoside(1) was isolated from the leaves of Alstonia macrophylla along with two known flavonoids,vitexin and myricetin-3′-rhamnoside-3-O-galactoside.Their structures were established by chemical and spectral evidences.The known compounds were reported for the first time from this plant.Moreover compound 1 was tested for antifungal and antibacterial activities. 相似文献
18.
Juan Su Zhi Jun Wu Run Hui Liu Yun Heng Shen Chuan Zhang Hui Liang Li Wei Zhang Wei Dong Zhang 《中国化学快报》2007,18(7):835-836
A new coumarin glycoside was isolated from the ethanol extract of the barks of stem of Daphne giraldii Nitsche. Its structure was defined as daphnetin 8-O-b-D-glucopyranosyl-(1→6)-b-D-glucopyranoside on the basis of spectral evidences. 相似文献
19.
云南丽江野生香薷籽微量元素成分分析 总被引:4,自引:0,他引:4
应用电感耦合氩等离子体原子发射光谱仪(ICP-AES),对采自云南丽江的野生香薷籽进行了微量元素成分分析,其结果为开发利用野生香薷籽提供了依据。 相似文献
20.
A new iridoid glycoside from Gardenia jasminoides 总被引:1,自引:0,他引:1
Xiao Qin Zhou Zhi Ming Bi Ping Li Dan Tang Hal Xia Cai 《中国化学快报》2007,18(10):1221-1223
A new iridoid glycoside,6′-O-sinapoylgeniposide,was isolated from Gardenia jasminoides Ellis and its structure was elucidated on the basis of 1D and 2D NMR,HR-ESI-MS techniques. 相似文献