DETERMINATION OF THE STRUCTURE OF ALKALOIDS BY MASS SPECTROMETRYThe structure of alkaloids can be determined from their mass spectra even in rather complex cases, if a compound of related known structure is available. The method is thus particularly useful for the elucidation of the structure of ...
anthora.Gradient enhanced selective one- and two-dimensional NMR methods were used for the structure determination. The assignment of the1H-NMR signals was expected to be relatively straightforwarddue to the moderate size of the investigated compounds. However, as a result of the molecular structure...
vol. 1, Alkaloids; Structure Elucidation of Natural Products by Mass Spectrometry. vol. 2, Steroids, Terpenoids, Sug... Mass Spectrometry in the Determination of Structure of Certain Natural Products Containing SugarsMass Spectrometry in the Determination of Structure of Certain Na... H Budzikiewic...
Isolation, structure determination and cytotoxicity studies of tryptophan alkaloids from an Australian marine sponge Hyrtios sp. Mass-guided fractionation of the MeOH extract from a specimen of the Australian marine sponge Hyrtios sp. resulted in the isolation of two new tryptophan a... Shahan,Khokha...
Khokhar S, Feng Y, Campitelli MR, Ekins MG, Hooper JN, Beattie KD, Sadowski MC, Nelson CC, Davis RA. Isolation, structure determination and cytotoxicity studies of tryptophan alkaloids from an Australian marine sponge Hyrtios sp. Bioorg Med Chem Lett. 2014; 24:3329-3332....
The present work provided diketopiperazines 1-10 as a new group of G2/M phase inhibitors of the mammalian cell cycle. In this symposium, we will mainly represent the production, isolation, structure determination and biological activities of the new natural diketopiperazines. 展开 ...
X-ray structure determinationPhytochemical survey of stems and leaves extracts of the South Brazilian endemic plant Raulinoa echinata Cowan, Rutaceae, led to the isolation of known furoquinoline alkaloids: the widespread skimmianine; kokusaginine, maculine, flindersiamine, and also quinolone ...
select article Synthesis and characterization of physicochemical properties of imidazolium-based ionic liquids and their application for simultaneous determination of sulfur compounds Research articleAbstract only Synthesis and characterization of physicochemical properties of imidazolium-based ionic liquids and their...
Application of a computer-assisted structure elucidation program for the structural determination of a new terpenoid aldehyde with an unusual skeleton The structure of a novel compound from Adansonia d Gutierrez,Osvaldo,Ridge,... - 《Magnetic Resonance in Chemistry Mrc》 被引量: 0发表: 2017年 ChemI...
The past few years have witnessed a veritable explosion in the development of new methods for the isolation and structure determination of natural products. This is true in particular for the applications of novel separation technologies and modern spect