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- W2026024917 abstract "Abstract Diacylglycerols have been separated as their ( S )‐(+)‐or ( R )‐(−)‐1‐(1‐naphthyl)ethyl urethanes by high performance liquid chromatography (HPLC) on a column of silica gel with 0.5% 2‐propanol in hexane as the mobile phase. The elution order of components derivatized with the ( S )‐form of the reagent was 1,3‐, followed by 1,2‐, and finally 2,3‐diacyl‐ sn ‐glycerols. The elution order of 1,2‐ and 2,3‐diastereomers was reversed when the ( R )‐form of 1‐(1‐naphthyl)ethyl isocyanate was used for derivatization. Single‐acid 1,2‐ and 2,3‐diastereomers were separated to the baseline with a resolution factor from 5.2–5.7, and the resolution factor between 1,3‐ and 1,2‐ or 2,3‐diacyl‐ sn ‐glycerol derivatives was more than 23. Molecular species of single‐acid diacylglycerol derivatives were separated in the sequence 18∶1<18∶0<18∶2<16.0. In order to assess this methodology as part of a procedure for the stereospecific analysis of triacyl‐ sn ‐glycerols, we prepared diacyl‐ rac ‐glycerols from maize oil, evening primrose oil and egg yolk triacylglycerols by partial hydrolysis with ethyl magnesium bromide. The 1,3‐, 1,2‐ and 2,3‐diacyl‐ sn ‐glycerols as ( S )‐(+)‐1‐(1‐naphthyl)ethyl urethanes were isolated and their fatty acid compositions were determined. Although this only permitted an indirect determination of the compositions of positions sn ‐1,‐2 and‐3, it was sufficient to indicate the potential of the methodology because results comparable to those published earlier were achieved." @default.
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- W2026024917 title "Chromatographic resolution of chiral diacylglycerol derivatives: Potential in the stereospecific analysis of triacyl-sn-glycerols" @default.
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- W2026024917 doi "https://doi.org/10.1007/bf02544346" @default.
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