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Characterization of Acacia mangium polyflavonoid tannins by MALDI-TOF mass spectrometry and CP-MAS 13C NMR

Matrix-assisted laser desorption/ionization time-of-flight (MALDI-TOF) mass spectrum indicated a ?twice-angular? structure resolving itself into a branched polymer structure up to 7 units oligomers presented in Acacia mangium tannin.

出版机构:Elsevier Science

刊物名称:European Polymer Journal

出版时间:2010

ISSN:0014-3057

数据源:报刊文摘

Fabaceae Polysaccharides. III. Galactomannan from Astragalus cicer seeds

Seeds of Astragalus cicer L. (Fabaceae) afforded a galactomannan (5.90% yield of seed mass) of molecular weight 1064 kDa, solutions of which had high viscosity [?] 925.

出版机构:Springer US

刊物名称:Chemistry of Natural Compounds

出版时间:2010

ISSN:0009-3130

数据源:报刊文摘

Triterpene glycosides from Astragalus and their genins. LXXXV. Structure of cyclomacroside E

The structure of a new cycloartane-type triterpene glycoside, cyclomacroside E, which was isolated from roots of Astragalus macropus Bunge (Leguminosae), was established as 3-O-?

出版机构:Springer US

刊物名称:Chemistry of Natural Compounds

出版时间:2010

ISSN:0009-3130

数据源:报刊文摘

Boric acid complexes with organic biomolecules: Mono-chelate complexes with salicylic and glucuronic acids

Two mono-chelate borate complexes are reported. Lithium mono-salicylatoborate, Li[B(Sal)(OH)2], is presented as a novel, hybrid metal?organic framework possessing zeolitic structure constructed with corner-sharing tetrahedral LiO4 and square pyramidal LiO5 polyhedra.

出版机构:Elsevier Science

刊物名称:Inorganica Chimica Acta

出版时间:2010

ISSN:0020-1693

数据源:报刊文摘

Molecular Heterogeneity of Cationic Polyisoprene

The effect of polymerization conditions on the molecular parameters and unsaturation of cationic polyisoprene synthesized with the BF3?O(C2H5)2-trichloroacetic acid catalytic system has been studied.

出版机构:Taylor & Francis

刊物名称:International Journal of Polymer Analysis and Characterization

出版时间:2009

ISSN:1023-666X

数据源:报刊文摘

Reactions of 3-cyanochromones with primary amines: structures of the products

Reactions of 3-cyanochromones with primary aromatic amines in boiling benzene gave mixtures of Z- and E-3-arylamino-2-(2-hydroxyaroyl)acrylonitriles and 2-amino-3-(aryl-iminomethyl)chromones.

出版机构:Springer US

刊物名称:Russian Chemical Bulletin

出版时间:2010

ISSN:1066-5285

数据源:报刊文摘

Synthesis and structure elucidation of five new pyrimido[5,4‐c]quinoline‐4(3H)‐one derivatives using 1D and 2D NMR spectroscopy

Five new 2?(amino/aroxy)?5?methylpyrimido[5,4?c]quinolin?4(3H)?one derivatives have been designed and synthesized via an aza?

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

Predicting the 1H and 13C NMR spectra of paramagnetic Ru(III) complexes by DFT

A fair agreement with experimental values is observed. Structural, magnetic and dynamic parameters have also been input to the Solomon?Bloembergen equation in order to predict signal lineshapes. It is shown that DFT?

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

Synthesis, structure and cytotoxic activity of new 1‐[5‐organylsilyl(germyl)‐2‐furyl (thienyl)]nitroethenes

New highly cytotoxic 1?[5?organylsilyl(germyl)?2?furyl(thienyl)]nitroethenes (IC500.3?3 ?g ml?1) have been prepared by condensation reaction of corresponding silicon? and germanium?

出版机构:John Wiley & Sons, Ltd.

刊物名称:Applied Organometallic Chemistry

出版时间:2010

ISSN:0268-2605

数据源:报刊文摘

Polychloroprene Degradation by Photo-Fenton. Conductivity Measures as New Approach for Detecting/Evaluation of Degradation Products

In the present work the photo-degradation of polychloroprene (PCP) in toluene solution catalyzed by FeCl3?

出版机构:Springer US

刊物名称:Journal of Polymers and the Environment

出版时间:2010

ISSN:1566-2543

数据源:报刊文摘