OBJECTIVETo study the chemical constituents of Davidia involucrata var. vilmoriniana.

METHODThe chemical constituents were isolated by column chromatography on silical gel and sephadex LH -20. Their structures were elucidated on the basis of spectral analysis and physical constants.

RESULTSeven compounds were isolated from this plant and the structures of them were identified as 3, 4, 5-trihydroxybenzoic acid (1), ellagic acid (2), maleic acid (3), quercetin (4), quercetin-3-O-beta-D-galactoside (5), 2alpha, 3alpha, 19alpha, 23-tetrahydroxyurs-12-en-28-oic-acid-28-O-beta-D-glucopyranosyl ester (6), ethyl brevifolin carbosylate (7), respectively.

CONCLUSIONCompounds 1-7 were isolated from this plant for the first time.

Chromatography ; Cornaceae ; chemistry ; Drugs, Chinese Herbal ; chemistry ; Magnetic Resonance Spectroscopy ; Spectrometry, Mass, Electrospray Ionization

OBJECTIVETo investigate the chemical constituents of Helwingia Chinensis.

METHODCompounds were isolated with silica gel, Sephadex LH - 20 and polyamide chromatography, and their structures were elucidated by means of spectral analysis.

RESULTSix compounds were isolated and identified as cinnamic acid (1), gult-5-en-3beta-ol (2), friedelin (3), alpha-amyrin (4), luteolin-7-O-beta-D-glucoside (5) and 4, 5-dimethoxy-1, 2-benzoquinone (6).

CONCLUSIONAll these Compounds were obtained from H. chinensis for the first time.

Cinnamates ; chemistry ; isolation & purification ; Cornaceae ; chemistry ; Oleanolic Acid ; analogs & derivatives ; chemistry ; isolation & purification ; Plants, Medicinal ; chemistry ; Triterpenes ; chemistry ; isolation & purification

Six compounds were isolated from aqueous extract of wine-processed Corni Fructus through silica gel, ODS column chromatography, Sephadex LH-20 gel column chromatography, reverse phase preparative HPLC and other chromatographic separation technologies. Their structures were identified with multiple spectroscopical methods including HR-ESI-MS, UV, IR, NMR and ECD and so on. Their structures were established as pinoresinoside B(1), cornusgallicacid A(2),(+)-isolariciresinol-9'-O-β-glucopyranoside(3),(-)-isolariciresinol 3α-O-β-D-glucopyranoside(4),(7R,8S)-dihydrodehydrodiconiferyl alcohol 9-O-β-D-glucopyranoside(5), and(-)-seco isolariciresinol-9'-O-β-D-glucopyranoside(6). Among them, compounds 1 and 2 were two new compounds. The biological activity evaluation results showed that compounds 2 and 6 had strong DPPH free radical scavenging ability, with EC_(50) values of(4.18±1.96) and(21.45±1.19) μmol·L~(-1), respectively. Compounds 1 and 2 had protective effects on H_2O_2-induced oxidative damage in NRK-52E cells in a dose-dependent manner, and the cell survival rate of compound 2 at 100 μmol·L~(-1) was 96.09%±1.77%.
Cornus ; Wine ; Naphthols ; Lignin

Background: Continuation of previous study of screening traditional medicinal plants with anti-diabetic effect, the hypoglycemic effect of glue extracted from Fructus Lycii which was named HPD was study. Objective: to investigate the hypoglycemic effect of HPD on diabetic mice caused by different doses of streptozocine. Subjects and methods: causing diabetes by streptozocine at difference doses was used to collect glucose intolerance mice, mild diabetic mice and severe diabetic mice. The effect of HPD p.o. at several doses was evaluated after 3 days of use. Results: By oral allocation with the dose of 500 and 1.000mg/kg body-weight for 3 days, HPD inhibited increasing blood glucose in streptozocine-induced glucose intolerance mice (intraperitoneal STZ 100 mg/kg). HPD 1000 mg/kg body weight had the potent hypoglycemic effect on streptozocine-induced diabetic mice, reverse the blood glucose self control ability of mild streptozicine-induced diabetic mice (STZ 120 mg/kg), meanwhile can not stop a hyperglycemic effect of high dose of STZ (STZ 180 mg/kg). Conclusion: HPD has the potent anti-hyperglycemic effect on streptozocine -induced diabetic rats. Anti-hyperglycemic of HPD is indirect under present of insulin\r\n', u'\r\n', u'\r\n', u'
Cornus ; Mice ; Inbred NOD ; Streptozocine ;

In order to reveal the regional characteristics of nucleosides and amino acids in Elaphuri Davidiani Cornu,39 samples of Elaphuri Davidiani Cornu collected from 4 different regions were analyzed by UPLC-QTRAP ~®/MS2 method followed by orthogonal partial least-squares discrimination analysis( OPLS-DA) and cluster analysis( CA). The results showed all the samples contained abundant nucleosides and amino acids,with the total content of 45. 09 μg·g~(-1) and 634. 80 μg·g-1,respectively. The samples presented significant regional differences in the contents of individual components,and the main differential components included Ura,Hpro,Thr,Glu,G5 P,2'-dG,Adeno,Met,Ade,Gln,Orni,Phe,2'-dA,Hit,Lys,and Ile. Among them,Ura,Met,Glu,and Ile had the highest content in the samples from Dafeng in Jiangsu,Qinhu in Jiangsu,Beijing,and Shishou in Hubei,respectively. OPLS-DA and CA demonstrated that all the samples of Elaphuri Davidiani Cornu could be divided into three categories,reflecting the regional characteristics. The results indicated that the accumulation of nucleosides and amino acids in Elaphuri Davidiani Cornu was closely related to its habitat,providing a useful reference for the research on the quality formation,quality evaluation and control,as well as the comprehensive utilization of Elaphuri Davidiani Cornu. The findings suggested that the content factors of Ura,Met,Glu,and Ile could be included into the quality standard system of Elaphuri Davidiani Cornu as the characteristics of medicinal materials from different regions.
Amino Acids ; Beijing ; Cornus ; Nucleosides

This study aims to develop the quality standards of Fructus Corni piece standard decoction. Morroniside and loganin were considered as index components. The content determination method of morroniside and loganin were developed. The fingerprint analysis method was also established. The standard decoctions of 15 batches of Fructus Corni pieces from Henan, Zhejiang, and Shaanxi were analyzed. The similarity values of fingerprint were all above 0.99. The transfer rates of morroniside were all higher than 100%. The quality evaluation indices of standard decoction were discussed. The transfer rate of an index component was not easy to be measured accurately and its concept was not rigorous. Therefore, index component yield was suggested as an evaluation index of standard decoction. Two methods for setting quality standards of standard decoctions, which were the ■ method and the ■ method, were compared. It was found that the standard range of ■ method was wider and more suitable for smaller sample size of standard decoction. The quality standards of Fructus Corni standard decoction were as follows, dry matter extraction ratio 37.48%-69.60%; morroniside yield 8.719-16.19 mg·g~(-1) piece; loganin yield 4.342-8.064 mg·g~(-1) piece.
Cornus ; chemistry ; Drugs, Chinese Herbal ; standards ; Fruit ; chemistry ; Quality Control

Pre-formulation physicochemical properties of the component-based Chinese medicine of Qinqi Fengshi Fang were investigated to provide a research basis for the design of the dosage form for component-based Chinese medicine of Qinqi Fengshi Fang. The macroporous resin adsorption and refining technology was used to prepare the total glycosides extract of Gentianae Macrophyllae Radix, Panacis Majoris Rhizome and Corni Fructus respectively in the prescription of Qinqi Fengshi Fang. Their physicochemical properties were investigated, including solubility, wettability, hygroscopicity, equilibrium solubility, oil-water partition coefficient, and stability. The results showed that the total glycosides of Gentianae Macrophyllae Radix, Panacis Majoris Rhizome and Corni Fructus all had good solubility and wettability. The solubility index of each total glycoside component was greater than 85%, and the water absorption index was greater than 50%. In the range of pH 2.0-7.4, the equilibrium solubility of three kinds of total glycosides all increased with the increase of pH, showing a consistent change trend of solubility. The hydrophilicity was also suitable and similar. Overall, three kinds of total glycosides showed good stability, but strong hygroscopicity. The degree of hygroscopicity was as follows: total glycosides of Gen-tianae Macrophyllae Radix > total glycosides of Corni Fructus > total glycosides of Panacis Majoris Rhizome. Therefore, the hygroscopi-city needed to be considered in the preparation of the component-based Chinese medicine of Qinqi Fengshi Fang. The excipients and packaging materials can be properly selected to reduce the hygroscopicity of the preparation. This study provides a reference for the dosage form design of the component-based Chinese medicine of Qinqi Fengshi Fang.
Cornus ; Drugs, Chinese Herbal ; Glycosides ; Medicine, East Asian Traditional ; Rhizome

It is imperative to analyse brain injuries directly in real time, so as to find effective therapeutic compounds to protect brain injuries by stress. We established a system which could elucidate the real time Ca2+ dynamics in an organotypic cultured hippocampal slice by the insults of artificial stress hormone, dexamethasone. The real time Ca2+ dynamics could continuously be detected in cornus ammonis 3 (CA3) of the organotypic hippocampus for 8 hours under confocal microscopy. When dexamethasone concentration was increased, the Ca2+ was also increased in a dose dependent manner at 1~100 microM concentrations. Moreover, when the organotypic cultured hippocampal slice was treated with a glutamate receptor antagonist together with dexamethasone, the real time Ca2+ dynamics were decreased. Furthermore, we confirmed by PI uptake study that glutamate receptor antagonist reduced the hippocampal tissue damage caused by dexamethasone treatment. Therefore, our new calcium ion dynamics system in organotypic cultured hippocampal slice after dexamethasone treatment could provide real time analysis method for investigation of brain injuries by stress.
Brain Injuries ; Calcium* ; Cornus ; Dexamethasone* ; Hippocampus ; Microscopy, Confocal ; Receptors, Glutamate

A new iridoid glycoside, cornushmf A(1) and nine known iridoids(2-10) were isolated from the water extract of the wine-processed Corni Fructus by various column chromatographies. Their chemical structures were identified by comprehensive spectroscopic methods as 7β-O-(2″-formylfuran-5″-methylene)-morroniside(1), 7-dehydrologanin(2), sweroside(3), 7β-O-methylmorroniside(4), 7α-O-methylmorroniside(5), 7β-O-ethylmorroniside(6), 7α-O-ethylmorroniside(7), cornuside(8), sarracenin(9), and loganin(10).
Cornus/chemistry* ; Drugs, Chinese Herbal/chemistry* ; Iridoids ; Wine

In this study, we analyzed the composition and content of 25 free amino acids in 32 batches of different forms of Cervi Cornu Pantotrichum(CCP; one-branched, two-branched, and three-branched) from 15 producing areas. The clustering analysis and orthogonal partial least squares discriminant analysis(OPLS-DA) were performed based on the content of 25 free amino acids. Potential differential metabolites were identified based on VIP value. The results showed that there were 25 free amino acids in CCP, and the average content of essential, non-essential, and total amino acids was 6.13, 32.99, and 39.12 mg·g~(-1), respectively. The clustering analysis and OPLS-DA demonstrated that 25 free amino acids had different content among the three forms of CCP, of which two-branched CCP samples were separately gathered into a group. Five differential components, including glutamic acid, tryptophan, ornithine, γ-aminobutyric acid, and hydroxylysine, were screened out as potential quality markers for the identification of different forms of CCP. This study provides a theoretical basis for the quality evaluation, processing, and utilization of different forms of CCP.
Amino Acids/analysis* ; Animals ; Cornus ; Deer ; Gastropoda ; Glutamic Acid