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Carbon-13 NMR spectroscopy
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13C n.m.r. spectra of steroids —a survey and commentary†
The literature on 13C n.m.r. examinations of steroids has been reviewed and the shielding data for over 400 examples are tubulated. The assignments for each compound have been considered and, whereExpand
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Sesquiterpenoid stress compounds of the solanaceae
Abstract The sesquiterpenes isolated from species of the Solanaceae under various conditions of stress are reviewed, with brief references to other solanaceous stress metabolites. The chemistry andExpand
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Biosynthesis of Pyoluteorin: A Mixed Polyketide-Tricarboxylic Acid Cycle Origin Demonstrated by [1,2-13C2]Acetate Incorporation
The incorporation of [1,2-13C2]acetate into the bacterial phytotoxin pyoluteorin (1) as determined by 13C NMR spectroscopy occurs in a pattern consistent with the biosynthesis of the molecule as aExpand
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The effects of structure on the shielding of formyl protons of aliphatic aldehydes have been examined. The survey included examples of acyclic, alicyclic, and α, β-unsaturated aldehydes. TheExpand
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Diamagnetic metal ion – nucleoside interactions in solution as studied by 15N nuclear magnetic resonance
15N nuclear magnetic resonance chemical shifts are shown to be highly sensitive to site-selective diamagnetic metal ion binding for the nucleosides adenosine, cytidine, and guanosine. ConclusionsExpand
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Metabolites of part V. Biosynthesis of altersolanol A and incorporation of altersolanol A-13Cx into altersolanol B and macrosporin ☆
Abstract The biosynthesis of the tetrahydroanthraquinone, altersolanol A ( 1 ), by Alternaria solani has been established by the incorporation of [1,2-13C2]-acetate. A blocked culture of A. solaniExpand
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On the biosynthesis of some polyketide metabolites in Alternariasolani: 13C and 2Hmr studies
13C nuclear magnetic resonance spectroscopy has revealed that cultures of the fungus Alternariasolani incorporate [1,2-13C2]acetate into the anthraquinone macrosporin (3) and theExpand
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Minor anthraquinonoid metabolites of Cercospora arachidicola
Minor metabolites of the fungus Cercosporaarachidicola have been identified as the known pigments versicolorin B (3), averantin (4), and nidurufin (2b) and the new, but closely related compoundsExpand
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