A New Furospirostanol Saponin, Ophiofurospiside B from Ophiopogon japonicus（ Thunb. ） Ker-Gawl

Introduction The tuber ofOphiopogon japonicus(L.f)KerGawl,which is a Chinese traditional medicine named "maidong"have been recorded to have various medical functions for curing cardiovascular diseases and bacterial infections,especially heart diseases.Phytochemical studies on this plant were reported previously[1].     

A Furostanol Saponin from the Cytotoxic Fraction of Tupistra chinensis Rhizomes

More than 1800 species of medicinal plants grow in Shennongjia Forest District. Most of them were recorded to be used as anti-inflammatory agents in the folk medicine1. Kaikoujian, a Chinese name for rhizomes of Tupistra chinensis Bak., is a reputed folk …     

A New Labdane Diterpenoid from the Bark of Larix oigensis Henry var. koreana Nakai

A new diterpenoid was isolated from the bark of Larix olgensis Henry var. koreana Nakai. Its structure was elucidated as 5S, 9S, 10R-labda-8(17), 13-diene-6α, 15-diol 1 by spectroscopic methods.     

A New Triterpenoid Saponin and a New Glycoside from Epigynum aurilum

A new triterpenoid saponin with novel sugar moiety (1), a new trisaccharide derivative (2), as well as a known monosaccharide derivative (3), were isolated from the dried stem of Epigyhum aurilum. The structures of compounds 1 and 2 were determined by MS and NMR spectram analyses.     

A New Triterpenoid Spaonin Isolated from the Seeds of Aesculus assamica Griff

The Aesculus genus consists of about thirty species distributed in Asia, Europe andAmerica. There are sixteen species distributed in China, and most of them are used asherbal medicines for the treatment of distention and pain in the chest and abdomen. Anu…     

A New Furostanol Saponin from the Water-extract of Dioscorea nipponica Mak., the Raw Material of the Traditional Chinese Herbal Medicine Wei Ao Xin

26-O-β-D-Glucopyranosyl-furost-5(6),20(22)-dien-3β,26-diol 1, a new furostanol saponin, was isolated from the water-extract of Dioscorea nipponica Mak., the raw material of a traditional Chinese herbal medicine Wei Ao Xin. The structure of 1 was determined on the basis of its spectral data especially by NMR spectroscopy. The result provides the first example of naturally occurring furostanol saponins with a single saccharide chain at the C-26 position.     

Two new saponins from the aerial part of Astragalus membranaceus var. mongholicus

Two new saponins named mongholicoside A (1) and mongholicoside B (2) were isolated from the aerial part of Astragalus membranaceus var. mongholicus. Their structures were determined by 1D and 2D NMR, ESI-MS techniques and chemical methods.     

New Minor Cyclopeptides from Arenaria oreophila （Caryophyllaceae）

New minor cyclic peptides, named arenariphilin C 1 and arenariphilin D 2, were isolated from the whole plants of Arenaria oreophila (Caryophyllaceae). Their structures were determined as cyclo(Pro1-Pro2-Leu1-Leu2-Phe-Ser-Gly-Thr) and cyclo (Ser-Cys) on the basis of spectroscopic data, especially by two-dimension NMR (2D NMR) technologies.     

Two New Cycloartane Triterpenes from The Leaves of Quercus valiabilis Blume

Two new cycloartane triterpenes were separated from the leaves of Quercus valiabilis Blume. The structures were identified as 4 α ,14 α-dimethyl-9 β,19-cycloergost-3 α-yl-24-oneand 4 α, 14 α -dimethyl-9 β,19-cycloergost-24(24‘‘ )-en-3 α -yl-acetate.     

A New Abeotaxane Diterpenoid from the Seeds of Taxus mairei

Phytochemical investigation on the methanolic extracts of the Taxus mairei seeds resulted in the isolation of a new abeotaxane diterpenoid. The structure was characterized as 2α, 5α, 13α-trihydroxy-7β, 10β-diacetoxy-2(3→20)abeotaxa-4(20), 11- dien-9     

Direct screening of G-quadruplex ligands from Kalopanax septemlobus (Thunb.) Koidz extract by high performance liquid chromatography

G-quadruplex DNA structure is considered to be a very attractive target for antitumor drug design due to its unique role in maintaining telomerase activities. Therefore, discovering ligands with high stability of G-quadruplex structure is of great interest. In this paper, high-performance liquid chromatography (HPLC) was used for fast screening of G-quadruplex ligands from the crude extract of Kalopanax septemlobus (Thunb.) Koidz, a traditional Chinese medicine. Four potent G-quadruplex ligands were firstly selected through HPLC by comparing the peak profiles and absorption intensity of the crude sample before and after interaction with G-quadruplex DNA. Then the target compounds were isolated and purified by high-speed countercurrent chromatography (HSCCC) for further confirmation of their stabilities of G-quadruplex by temperature-dependent circular dichroism (CD). Four compounds were isolated and identified as 2,4-dihydroxybenzoic acid (I), chlorogenic acid (II), caffeic acid (III) and 5-feruloylquinic acid (IV) each by MS and NMR. Finally, compound I, II, III were each proved to be potent G-quadruplex ligands by decreasing the peak intensity in HPLC chromatogram after complexation with G-quadruplex, which stabilize G-quadruplex by 7±2 °C, 10±2 °C, and 3±2 °C respectively, based on CD analyses. However, compound IV showed no G-quadruplex stability. The decrease of peak absorption intensity in HPLC chromatogram is the most important signal to find G-quadruplex ligands. This provides a very promising strategy for fast screening G-quadruplex ligands from natural plant extracts.     

北苍术和茅苍术挥发油成分的比较

采用气相色谱-质谱联用技术分析了北苍术和茅苍术的挥发油成分,分别鉴定出47和50种化学成分,并测定了其相对含量。 采用色谱指纹图谱八强峰法和分区法,根据色谱峰的保留时间把总离子流色谱图分为5个区,比较了北苍术和茅苍术的挥发油成分。 结果表明,在总离子流色谱图Ⅳ和Ⅴ区中,从北苍术和茅苍术中均检出苍术的主要药效成分β-桉叶油醇、苍术酮和苍术素,且相对含量较高。 这表明《中国药典》将北苍术、茅苍术统称为苍术具有一定的科学性。     

A new flavonol glycoside from Hydrangea macrophylla (Thunb.) Seringe

<正>A new kaempferol glycoside,named kaempferol 3-O-[6″-O-β-D-glucopyranosyl-6′′′-O-α-L-rhamnopy ranosyl-2′′′′-O-α-L-rhamnopyranosyl]-β-D-glucopyranoside,was isolated from Hydrangea macrophylla(Thunb.) Seringe.Its structure was establishedby spectroscopic techniques including MS,IR,UV,and 2D NMR.     

Three New Compounds from Forsythia Suspensa (Thunb.) Vahl

Forsythiasuspensa(ThUnb.)VahlhasbeenusedintradihonalChinesemedicineforanhiallammatoryandamibacterialpmposes.AnUInberofcompoundssuchasforsythiaside,phillygeninrengyoletc.haVebeenidentifiedl-#fromthefactsofmisplat.AsPartofourstudyontheachveprinciplesoftradihonalChinesemedicine,wereinvestigatCdthechemicalconstitllentsofRsuspensa.heartycompoundshavebeenisolatCdfromthisspecies.ThispaperdescribesthestrUcturalelucidahonofthreenewcompoundsfsuspenolicacid(1),forSythensideA(2),andforsythensideB(3)…     

Elsholtzia ciliata (Thunb.) Hyland: A Review of Phytochemistry and Pharmacology

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.     

火焰原子吸收法测定中草药海金沙茎中五种金属元素的含量

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。     

A Comparison Study on Polysaccharides Extracted from Atractylodes chinensis (DC.) Koidz. Using Different Methods: Structural Characterization and Anti-SGC-7901 Effect of Combination with Apatinib

For hundreds of years, Atractylodes chinensis (DC.) Koidz. (AK) has been widely used as a treatment for spleen and stomach diseases in China. The AK polysaccharides (AKPs) have been thought to be the important bioactive components. In this stud, the impacts of different extraction methods were analyzed. The differences between AKPs extracted by hot water extraction (HWE), AKPs extracted by ultrasonic extraction (UAE), and AKPs extracted by enzyme extraction (EAE) were compared in terms of yield, total carbohydrate content, molecular weight distribution, monosaccharide composition, and synergistic activity of the AKPs with apatinib were determined. The results indicated that the yield of the polysaccharide obtained from HWE was higher than that of UAE and EAE. However, activity assays indicated that UAE-AKPs and HWE-AKPs enhanced apoptosis of human gastric cancer cells (SGC-7901) treated with apatinib and UAE-AKPs showed the strongest synergistic activities. This is also in agreement with the fact that UAE-AKPs have a smaller molecular weight, β-configuration, and higher galactose content. These findings suggested that UAE is an efficient and environmentally friendly method for producing new polysaccharides from Atractylodes chinensis (DC.) Koidz. for the development of natural synergist and for the treatment of gastric cancer.     

川麦冬中的新呋甾皂苷的分离与鉴定

从川麦冬块根总皂苷中分离并鉴定了4个双糖链甾体皂苷化合物, 其中化合物1为新化合物, 化合物2~4是已知化合物.     

Vaccariside A, Novel Saponin from Vaccaria segetalis (Neck.) Garcke

TheseedsofVaccariasegetalis(Neck.)Garcke,belongingtocaryophyllaceaefamily,isawell-knowncommonly-usedtraditionalChinesemedicine(TCM)called'wang-bu-fluxing',andhasbeenrecordedinChinesePharmacopoeiaasafolkmedicineforthetreatmentofblood-stasissyndromewithameniaordysmenorrhea,carbuncle,stranguriacomplicatedbyhematuria.Severaltriterpenoidsaponinsandeightcyclopeptideshavebeenisolatedfromtheseedstogetherwithmanyothercompoundsl-4.Duringourfurthersearchingforbioactivesecondarymetabolitesinthisplant,a…