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Primary structure and configuration of tea polysaccharide

The results indicate that TGC consists of 6 monosaccharides: Rha, Ara, Xyl, Glu, Man and Gal. The configuration of TGC in water solution is proposed to be an ordered helix.

出版机构:Science in China Press

刊物名称:Science in China Series C

出版时间:2004

ISSN:1006-9305

数据源:报刊文摘

Comprehensive separation and identification of chemical constituents from Apocynum venetum leaves by high-performance counter-current chromatography and high performance liquid chromatography coupled with mass spectrometry

For HPCCC separation, four sets of solvent systems, n-hexane?ethyl acetate?acetonitrile?water (1.5:3.5:2:4.5, v:v:v:v), ethyl acetate?methanol?water (5:2:5, v:v:v) and n-butanol?methanol?water (5:1:5, v:v:v) were used for the one-step separation by four stages.

出版机构:Elsevier Science

刊物名称:Journal of Chromatography B, Analytical Technologies in the Biomedical and

出版时间:2010

ISSN:1570-0232

数据源:报刊文摘

Important roles of the hyphenated HPLC‐DAD‐MS‐SPE‐NMR technique in metabonomics

Metabolite identification is a key step for metabonomics study. A fully automated hyphenation of HPLC?diode?array detector (DAD) mass spectrometry (MS) solid phase extraction (SPE)?NMR spectroscopy (HPLC?DAD?MS?SPE?

出版机构:John Wiley & Sons, Ltd.

刊物名称:Magnetic Resonance in Chemistry

出版时间:2009

ISSN:0749-1581

数据源:报刊文摘

2,4-dinitrophenylhydrazine and 1,10-phenanthroline Conjugated Colorometric Receptor for Selective Sensing of F-

new chromogenic sensor, 1,10-phenanthroline affixed to the 2,4-dinitrophenylhydrazine moiety, was synthesized and characterized. Among anions added into it, F-, AcO- and H2PO4- ions resulted in the color changes from light brown to dark brown, while other tested anions did not induce color changes.

出版机构:Bentham Science Publishers

刊物名称:Mini-Reviews in Organic Chemistry

出版时间:2011

ISSN:1570-193X

数据源:报刊文摘

Semiquinol and phenol compounds from seven Senecio species

In this paper, examination of the aerial parts of seven Senecio species from Serbia and Montenegro is reported.

出版机构:SP Versita

刊物名称:Chemical Papers

出版时间:2011

ISSN:0366-6352

数据源:报刊文摘

Formation of pyrophosphate-like adducts from nerve agents sarin, soman and cyclosarin in phosphate buffer: Implications for analytical and toxicological investigations

Phosphate buffer is frequently used in biological, biochemical and biomedical applications especially when pH is to be controlled around the physiological value of 7.4.

出版机构:Elsevier Science

刊物名称:Toxicology Letters

出版时间:2011

ISSN:0378-4274

数据源:报刊文摘

Topotecan dynamics, tautomerism and reactivity-1H/13C NMR and ESI MS study

Topotecan (TPT) is in clinical use as an antitumor agent, hycamtin?. Because of this, it requires both biologically and chemically useful information to be available. TPT acts by binding to the covalent complex formed by nicked DNA and topoisomerase I.

出版机构:John Wiley & Sons, Ltd.

刊物名称:Magnetic Resonance in Chemistry

出版时间:2010

ISSN:0749-1581

数据源:报刊文摘

Hedgehog antagonists cyclopamine and dihydroveratramine can be mistaken for each other in Veratrum album

oxic plant, Veratrum album (ssp. viriscens), was found to have an inhibitory effect on Hedgehog (Hh), a developmental signaling pathway that has been shown to be active during development, in adult stem cells and in numerous human tumors.

出版机构:Elsevier Science

刊物名称:Journal of Pharmaceutical and Biomedical Analysis

出版时间:2010

ISSN:0731-7085

数据源:报刊文摘

Structural characterization of the major glycolipids from Arthrobacter globiformis and Arthrobacter scleromae

Arthrobacter is a genus of Gram-positive bacteria widely distributed in soil. The ability to catabolize a variety of xenobiotics has shown their potential as a detoxifying agent. Recently, Arthrobacter has been also recognized as an opportunistic pathogen. Glycolipids from A.

出版机构:Elsevier Science

刊物名称:Carbohydrate Research

出版时间:2010

ISSN:0008-6215

数据源:报刊文摘

Anthocyanins with unusual furanose sugar (apiose) from leaves of Synadenium grantii (Euphorbiaceae)

Four apiose containing anthocyanins from leaves of Synadenium grantii (Euphorbiaceae) were for the first time identified.Four anthocyanins, cyanidin 3-O-(2?-(5?-(E-p-coumaroyl)-?-apiofuranosyl)-?-xylopyranoside)-5-O-?-glucopyranoside, cyanidin 3-O-(2?-(5?-(E-p-coumaroyl)-?-apiofuranosyl)-?

出版机构:Elsevier Science

刊物名称:Phytochemistry

出版时间:2010

ISSN:0031-9422

数据源:报刊文摘