کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1211611 | 965568 | 2006 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Simple gas chromatographic method for the stereodifferentiation of methyl nilate, a chiral α-methyl-β-hydroxy ester
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موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی آنالیزی یا شیمی تجزیه
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
The four stereoisomers of methyl nilate, methyl 3-hydroxy-2-methylbutanoate, have been separated and analyzed by the direct simultaneous achiral-chiral high-resolution gas chromatography (HRGC) and also by the chiral high-resolution gas chromatography-time-of-flight mass spectrometry (HRGC-TOF-MS). The method involved the use of DB-5 and CP Chirasil-Dex CB columns. The elution sequences on the two columns were determined and are reported. The one-step GC method allows the identification by retention data and simultaneously to determine unequivocally the absolute configuration of nilic acid moieties contained in minor complex natural products without previous isolation, as part of a general strategy for the structure determination of the compounds.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Chromatography A - Volume 1108, Issue 2, 10 March 2006, Pages 225-230
Journal: Journal of Chromatography A - Volume 1108, Issue 2, 10 March 2006, Pages 225-230
نویسندگان
Elvira M.S.M. Gaspar, José G. Barroso,