Syn and anti forms of some monosaccharide O-methyl oximes:a 13C-n.m.r. and g.l.c. study

Funcke, Werner; Sonntag, Clemens von

doi:10.1016/s0008-6215(00)85770-5

Cited by 35 publications

(18 citation statements)

References 20 publications

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“…Our results are consistent with a previous report by Funcke et al [27]: the E-form is dominating for the aldohexoses (Figure 3a) and for the ketohexoses the ratio between the two forms is almost equal (Figure 3b). In the MS spectra instead (data not shown), the main discriminative feature between the two anomers is the ratio between the ion at m/z 570 and the ion at m/z 480 corresponding to the fragment [M + H-TMSOH] + .…”

Section: Sugarssupporting

confidence: 94%

Online Spectral Library for Gc-Atmospheric Pressure Chemical Ionization–ToF MS

et al. 2013

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Section: Sugarssupporting

confidence: 94%

Online Spectral Library for Gc-Atmospheric Pressure Chemical Ionization–ToF MS

et al. 2013

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“…Peak identifications and mass spectra are given in Table 3. While non‐reducing carbohydrates gave only one chromatographic peak, reducing carbohydrates presented two isomers corresponding to syn and anti or E and Z isomers 28. Gallic acid was also detected and has been described as a natural component of oak wood 19…”

Section: Resultsmentioning

confidence: 99%

Optimisation of pressurised liquid extraction for the determination of monosaccharides and polyalcohols in woods used in wine aging

et al. 2009

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BACKGROUND: The carbohydrate profile of woods used to age wines and spirits is largely unstudied in spite of its possible influence on the quality of aged beverages. This experiment evaluated the feasibility of employing pressurised liquid extraction to isolate monosaccharides and polyalcohols from woods used in aging, yielding a reliable analytical extraction method for characterising these compounds. Various solvents were tested and the extraction procedure was optimised by a three-level factorial experimental design based on two main factors: extraction temperature and extraction time. The total extraction yield of target compounds was taken as response variable, and model parameters were estimated by multiple linear regression.

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“…Funcke and von Sonntag [25] reported that the major O-methyl oximes formed from aldohexoses are the syn forms (which can be an aid in the identification), while for ketohexoses almost equal proportions of syn and anti are formed. Trifluoroacetylated oximes can be prepared at low temperatures and requires low column temperatures for GC but their use is less common [2].…”

Section: Oximesmentioning

confidence: 99%